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1 DFC Series Packaged Heating and Cooling Unit

3.1 Documents / Resources

3.1.1 References

DFC Series Packaged Heating and Cooling Unit

Product Information:

Product: DFC Series Packaged Heating and Cooling Unit
Capacity: 15 to 25 tons
Model: 25 ton model shown in picture. 20 ton model has 4 fans,
15 ton model has 3 fans
Manufacturer: Daikin North America LLC
Address: 19001 Kermier Rd. Waller, TX 77484
Website: www.daikincomfort.com
Contact: 855-DAIKIN-1

Product Usage Instructions:

Read the installation instructions carefully before
proceeding.
Ensure that all power sources are disconnected before servicing
or installing the unit.
Do not store combustible materials or use flammable liquids or
vapors near the appliance to prevent the risk of property damage,
personal injury, or death.
Follow the safety instructions provided in the manual,
including adhering to maximum external static pressure, air
temperature rise, and minimum or maximum CFM.
Do not use the unit if any part has been under water. Contact a
qualified service technician for inspection and replacement of
affected parts.
When ordering replacement parts or reporting shortages or
damages, provide the complete unit model and serial numbers as
stamped on the unit’s nameplate.
Exercise caution when handling sheet metal parts, screws,
clips, and similar items as they may have sharp edges.
Only connect and use devices that are design certified by the
manufacturer for use with this unit. Using non-approved devices may
result in property damage, personal injury, reduced unit
performance, and hazardous conditions.
Avoid using the unit as a construction heater during the
finishing phases of construction on a new structure. This may lead
to premature failure due to low return air temperatures and
exposure to corrosive or dirty atmospheres.
Properly install, repair, operate, and maintain the unit to
prevent property damage, personal injury, or death due to fire,
explosions, smoke, soot, condensation, electric shock, or carbon
monoxide.

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INSTALLATION INSTRUCTIONS

DFC SERIES
Packaged Heating and cooling Unit
15 to 25 ton
NOTE: 25 ton model shown in picture. 20 ton model has 4 fans 15 ton model has 3 fans

WARNING
ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST, SERVICE, MAINTENANCE OR REPAIR (HEREINAFTER, “SERVICE”) THE EQUIPMENT SPECIFIED IN THIS MANUAL SHOULD SERVICE THE EQUIPMENT. THE MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES. IF YOU SERVICE THIS UNIT, YOU ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY RESULT. IN ADDITION, IN JURISDICTIONS THAT REQUIRE ONE OR MORE LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL, ONLY LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT. IMPROPER INSTALLATION, ADJUSTMENT, SERVICING, MAINTENANCE OR REPAIR OF THE EQUIPMENT SPECIFIED IN THIS MANUAL, OR ATTEMPTING TO INSTALL, ADJUST, SERVICE OR REPAIR THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER TRAINING MAY RESULT IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
DO NOT BYPASS SAFETY DEVICES

RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
These installation instructions cover the outdoor installation of single package heating and cooling units. See the Specification Sheet applicable to your model for information regarding accessories.
*NOTE: Please contact your distributor or our website for the applicable Specification Sheet referred to in this manual.

Index
Safety Instructions………………………………………………………..2 Replacement Parts ……………………………………………………….2 General Information ……………………………………………………..2 Unit Location……………………………………………………………….4 Clearances ………………………………………………………………….. 6 Roof Curb Post-Installation Checks…………………………………..6 Roof Top Duct Connections…………………………………………….6 Rigging Details……………………………………………………………..6 Electrical Wiring …………………………………………………………..7 Circulating Air and Filters……………………………………………….9 Condensate Drain Connection ………………………………………..9 Startup, Adjustments, and Checks …………………………………10 Air flow Adjustments…………………………………………………..11

IOD-1054 08/2022

Our continuing commitment to quality products may mean a change in specifications without notice.
19001 Kermier Rd. Waller, TX 77484 www.daikincomfort.com

Normal Sequence Of Operation – Cooling ……………………….12 Maintenance ……………………………………………………………..14 Appendix A Blower Performance Data……………………………17 Appendix B Electrical Data……………………………………………29 Appendix C Unit Dimensions ………………………………………..34 Appendix D Wiring Diagrams ………………………………………..25 Start-up checklist………………………………………………………..47

WARNING HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
To prevent the risk of property damage, personal injury or death, do not store combustible materials or use gasoline or other flammable liquids or vapors in the vicinity of this appliance.

SAFETY INSTRUCTIONS
To The Installer Before installing this unit, please read this manual to familiarize yourself on the specific items which must be adhered to, including maximum external static pressure to unit, air temperature rise and minimum or maximum CFM.
Keep this literature in a safe place for future reference.
WARNING
To avoid property damage, personal injury or death, do not use this unit if any part has been under water. Immediately call a qualified service technician to inspect the furnace and to replace any part of the control system and any gas control having been under water

REPLACEMENT PARTS
Ordering Parts When reporting shortages or damages, or ordering repair parts, give the complete unit model and serial numbers as stamped on the unit’s nameplate.
Replacement parts for this appliance are available through your contractor or local distributor. Your nearest distributor can be located online at www.daikinac.com or by contacting:
EQUIPMENT SUPPORT DAIKIN NORTH AMERICA LLC
19001 KERMIER ROAD WALLER, TEXAS 77484
855-DAIKIN-1
GENERAL INFORMATION
For complete information and installation instructions for models with DDC controls, see manual DK-DDC-TGD-XXX.
WARNING

CAUTION
Sheet metal parts, screws, clips and similar items inherently have shart edges, and it is necessary that the installer and servicer personnel exercise caution.
WARNING
Do not connect to or use any device that is not design certified by the manufacturer for use with this unit. Serious property damage, personal injury, reduced unit performance and/or hazardous conditions may result from the use of such non-approved devices.
WARNING
This unit must not be used as a “construction heater” during the finishing phases of construction on a new structure. This type of use may result in premature failure of the unit due to extremely low reurn air temperatures and exposure to corrosive or very dirty atmospheres.

To prevent property damage, personal injury or death due to fire, explosions, smoke, soot, condensation, electric shock or carbon monoxide, this unit must be properly installed, repaired, operated and maintained.
This unit is approved for outdoor installation ONLY. Rated performance is achieved after 20 hours of operation. Rated performance is delivered at the specified airflow. See outdoor unit specification sheet for split system models or product specification sheet for packaged and light commercial models. Specification sheets can be found at www.daikinac.com for Daikin brand products. Within the website, please select the residential or commercial products menu and then select the submenu for the type of product to be installed, such as air conditioners or heat pumps, to access a list of product pages that each contain links to that model’s specification sheet.
To assure that your unit operates safely and efficiently, it must be installed, operated, and maintained in accordance with these installation and operating instructions, all local building codes and ordinances.

EPA Regulations
Important: The United States Environmental Protection Agency (EPA) has issued various regulations regarding the introduction and disposal of refrigerants in this unit. Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines. Because regulations may vary due to passage of new laws, we suggest a certified technician perform any work done on this unit. Should you have any questions please contact the local office of the EPA.

c. Original invoice or certified copy thereof, showing trade and other discounts or reductions.
d. Copy of the inspection report issued by the carrier representative at the time damage is reported to the carrier. The carrier is responsible for making prompt inspection of damage and for a thorough investigation of each claim. The distributor or manufacturer will not accept claims from dealers for transportation damage.
NOTE: When inspecting the unit for transportation damage, remove all packaging materials. Recycle or dispose of the packaging material according to local codes.

National Codes
This product is designed and manufactured to permit installation in accordance with National Codes. It is the installer’s responsibility to install the product in accordance with National Codes and/or prevailing local codes and regulations.
The heating and cooling capacities of the unit should be greater than or equal to the design heating and cooling loads of the area to be conditioned. The loads should be calculated by an approved method or in accordance with ASHRAE Guide or Manual J – Load Calculations published by the Air Conditioning Contractors of America.

Pre-Installation Checks Carefully read all instructions for the installation prior to installing unit. Ensure each step or procedure is understood and any special considerations are taken into account before starting installation. Assemble all tools, hardware and supplies needed to complete the installation. Some items may need to be purchased locally.
UNIT LOCATION
WARNING

Obtain from:
American National Standards Institute 25 West 43rd Street, 4th Floor New York, NY 10036
System design and installation should also, where applicable, follow information presented in accepted industry guides such as the ASHRAE Handbooks. The manufacturer assumes no responsibility for equipment installed in violation of any code or regulation. The mechanical installation of the packaged roof top units consists of making final connections between the unit and building services; supply and return duct connections; and drain connections (if required). The internal systems of the unit are completely factory-installed and tested prior to shipment.
Units are generally installed on a steel roof mounting curb assembly which has been shipped to the job site for installation on the roof structure prior to the arrival of the unit. The model number shown on the unit’s identification plate identifies the various components of the unit such as refrigeration tonnage, heating input and voltage. Verify that the Voltage listed on the unit id plate matches the voltage supplied from the site.
Carefully inspect the unit for damage including damage to the cabinetry. Any bolts or screws which may have loosened in transit must be re-tightened. In the event of damage, the receiver should:
1. Make notation on delivery receipt of any visible damage to shipment or container.
2. Notify carrier promptly and request an inspection. 3. In case of concealed damage, carrier should be notified as
soon as possible-preferably within 5 days. 4. File the claim with the following supporting documents: a. Original Bill of Lading, certified copy, or indemnity bond. b. Original paid freight bill or indemnity in lieu thereof.

To prevent possible equipment damage, property damage, personal injury or death, the following must be observed when installing the unit.
IMPORTANT NOTE: Remove wood shipping rails prior to installation of the unit. See important note under Roof Curb Installation Only.
All Installations:
Important Note: Unit should be energized 24 hours prior to compressor start up to ensure crankcase heater has sufficiently warmed the compressors. Compressor damage may occur if this step is not followed.
NOTE: Units are vertical supply and return only.
Proper installation of the unit ensures trouble-free operation. Improper installation can result in problems ranging from noisy operation to property or equipment damages, dangerous conditions that could result in injury or personal property damage. Damage or repairs due to improper installation are not covered under the warranty. Give this booklet to the user and explain it’s provisions. The user should retain these instructions for future reference.
· For proper operation and condensate drainage, the unit must be mounted level.
· The flue outlet hood must be at least three feet above any forced air inlet located within ten feet. The economizer/ manual fresh air intake/motorized fresh air intake and combustion air inlet mounted on the unit are not affected by this restriction.
· Do not locate the unit in an area where the outdoor air (i.e. combustion air for the unit) will be frequently contaminated by compounds containing chlorine or fluorine. Common sources of such compounds include swimming pool chemicals and chlorine bleaches, paint stripper, adhesives, paints, varnishes, sealers, waxes (which are not yet dried) and solvents used during

construction and remodeling. Various commercial and industrial processes may also be sources of chlorine/ fluorine compounds.
· To avoid possible illness or death of the building occupants,
do NOT locate outside air intake device (economizer, manual fresh air intake, motorized fresh air intake) too close to an exhaust outlet, gas vent termination, or plumbing vent outlet. For specific distances required, consult local codes or in their absence, with the latest edition of the National Fuel Gas Code latest edition of the National Fuel Gas Code NFPA54/ANSI Z223.1 and National Standard of Canada CAN/CSA B149 Installation Codes.
· Allow minimum clearances from the enclosure for fire
protection, proper operation, and service access (see unit clearances). These clearances must be permanently maintained.
· If used, do not allow the economizer/manual fresh air
damper/ motorized fresh air damper to become blocked by snow or debris. In some climates or locations, it may be necessary to elevate the unit to avoid these problems. For proper operation and condensate drainage, the unit must be mounted level
· When the unit is heating, the temperature of the return
air entering the unit must be between 50° F and 100° F.
Ground Level Installations Only:
· When the unit is installed on the ground adjacent to the
building, a level concrete (or equal) base is recommended. Prepare a base that is 3″ larger than the package unit footprint and a minimum of 3″ thick.
· The base should also be located where no runoff of water
from higher ground can collect in the unit.
Roof top Installations Only:
· To avoid possible property damage or personal injury, the
roof must have sufficient structural strength to carry the weight of the unit(s) and snow or water loads as required by local codes. Consult a structural engineer to determine the weight capabilities of the roof.
· The unit may be installed directly on wood floors or on
Class A, Class B, or Class C roof covering material.
· To avoid possible personal injury, a safe, flat surface for
service personnel should be provided.
· As indicated on the unit data plate, a minimum clearance of
36″ to any combustible material is required on the furnace access side of the unit. All combustible materials must be kept out of this area.
· This 36″ clearance must also be maintained to insure
proper combustion air and flue gas flow. The combustion air intake and furnace flue discharge must not be blocked for any reason, including blockage by snow.
· Adequate clearances from the unit to any adjacent
public walkways, adjacent buildings, building openings or openable windows must be maintained in accordance with national codes. National Fuel Gas Code NFPA54/ANSI Z223.1 and National Standard of Canada CAN/CSA B149 Installation Codes.

Unit Precautions · Do not stand or walk on the unit. · Do not drill holes anywhere in panels or in the base frame of the unit (except where indicated). Unit access panels provide structural support. · Do not remove any access panels until unit has been installed on roof curb or field supplied structure. · Do not roll unit across finished roof without prior approval of owner or architect. · Do not skid or slide on any surface as this may damage unit base. The unit must be stored on a flat, level surface. Protect the condenser coil because it is easily damaged.
Roof Curb Installations Only: Before installing this unit… IMPORTANT NOTE: This unit has been equipped with a shipping brace under the compressor section that MUST BE REMOVED before installing the unit on a roof curb. Please follow the instructions below to remove brace.
CAUTION
When unit is suspended, boards and shipping brace will drop when screws are removed. To prevent personal injury, STAND CLEAR. Remove fork hole brackets, boards and shipping brace from bottom of unit before placing units onto curb.
1. Remove wooden struts and shipping brace per installation instructions. The struts are located in the fork holes and are used to protect the unit from damage while lifting with forks. The shipping brace is located under the unit (under compressor). Also remove the fork hole brackets as shown in the following figure.
2. Locate and remove the end brackets as shown in the following figure.
4

LIFT OVER APPROXIMATE CENTER OF UNIT
SPREADER BARS MUST BE USED WITH LIFTING STRAPS THAT ARE LESS THAN 16 FEET LONG

REMOVE 2 BRACKETS ON EACH END TO REMOVE SHIPPING BRACE

REMOVE 2 BRACKETS ON EACH END TO REMOVE WOODEN STRUTS

· Sufficient structural support must be determined prior to
locating and mounting the curb and package unit.
· Ductwork must be constructed using industry guidelines.
The duct work must be placed into the roof curb before mounting the package unit. Our full perimeter curbs include duct connection frames to be assembled with the curb. Cantilevered type curbs are not available from the factory.
· Curb insulation, cant strips, flashing and general roofing
material are furnished by the contractor. The curbs must be supported on parallel sides by roof members. The roof members must not penetrate supply and return duct opening areas as damage to the unit might occur.
NOTE: The unit and curb accessories are designed to allow vertical duct installation before unit placement. Duct installation after unit placement is not recommended.
CAUTION
All curbs look similar. To avoid incorrect curb positioning, check job plans carefully and verify markings on curb assembly. Instructions may vary in curb styles and supercede information shown.
See the manual shipped with the roof curb for assembly and installation instructions.
CLEARANCES

3. Lift unit per the “Rigging Details” section of this manual, observing all warnings and cautions. When unit is lifted, boards and shipping brace will drop if screws have been removed. To avoid injury, STAND CLEAR.
4. Dispose of the boards and brace appropriately.

Curb installations must comply with local codes and should be done in accordance with the established guidelines of the National Roofing Contractors Association.

Proper unit installation requires that the roof curb be firmly and permanently attached to the roof structure. Check for adequate fastening method prior to setting the unit on the curb.
Full perimeter roof curbs are available from the factory and are shipped unassembled. Field assembly, squaring, leveling and mounting on the roof structure are the responsibility of the installing contractor. All required hardware necessary for the assembly of the sheet metal curb is included in the curb accessory.
WARNING
To prevent possible equipment damage, property damage, personal injury or death, the following bullet points must be observed when installing the unit.

*In situations that have multiple units, a 48″ minimum clearance is
required between the condenser coils.
UNIT CLEARANCES
Adequate clearance around the unit should be kept for safety, service, maintenance, and proper unit operation. A 75″ clearance on the non-service side of the unit is required to facilitate possible blower assembly, shaft, wheel replacement and coil removal. *DFG ONLY – A 75″ clearance on the service is required for removal of the gas heat exchanger. This unit must not be installed beneath any obstruction. This unit should be installed remote from all building exhausts to inhibit ingestion of exhaust air into the unit’s fresh air intake.

CAUTION
Do not lift units two at a time. Provisions for forks have been included in the unit base fram. Minimum fork length is 72″ to prevent damage to the unit.
Provisions for forks have been included in the unit base frame. No other fork locations are approved.

WARNING

DFG
ROOF CURB INSTALLATION
ROOF CURB POST-INSTALLATION CHECKS After installation, check the top of the curb, duct connection frame and duct flanges to make sure gasket has been applied properly. Gasket should be firmly applied to the top of the curb perimeter, duct flanges and any exposed duct connection frame. If gasket is loose, re-apply using strong weather resistant adhesive. Protrusion Inspect curb to ensure that none of the utility services (electric) routed through the curb protrude above the curb.
CAUTION

To prevent possible equipment damage, property damage, personal injury or death, the following bullet points must be observed when installing the unit.
· Unit must be lifted by the four lifting holes located at the base frame corners.
· Lifting cables should be attached to the unit with shackles. · The distance between the crane hook and the top of the
unit must not be less than 60″. · Two spreader bars must span over the unit to prevent
damage to the cabinet by the lift cables. Spreader bars must be of sufficient length so that cables do not come in contact with the unit during transport. Remove wood struts mounted beneath unit base frame before setting unit on roof curb. These struts are intended to protect unit base frame from fork lift damage. Removal is accomplished by extracting the sheet metal retainers and pulling the struts through the base of the unit. Refer to rigging label on the unit. Important: If using bottom discharge with roof curb, ductwork should be attached to the curb prior to installing the unit. Ductwork dimensions are shown in Roof Curb Installation Instructions.
Refer to the Roof Curb Installation Instructions for proper curb installation. Curbing must be installed in compliance with the National Roofing Contractors Association Manual.
Lower unit carefully onto roof mounting curb. While rigging unit, center of gravity will cause condenser end to be lower than supply air end.

If protrusions exist, do not attempt to set unit on curb. Information shown.

ROOF TOP DUCT CONNECTIONS
Install duct connections on the roof curb before placing the unit on the rooftop.
NOTE: If duct is to be fasten to the roof curb the fasteners need to be installed horizontally to allow the unit to be set flat on the curb.

RIGGING DETAILS
WARNING
To prevent property damage, the unit should remain in an upright position during all rigging and moving operations. To facilitate lifting and moving when a crane is used, place the unit in an adequate cable sling.
6

CAUTION

When unit is suspended, boards and shipping brace will drop when screws are removed. To prevent personal injury, STAND CLEAR. Remove fork hole brackets, boards and shipping brace from bottom of unit before placing units onto curb.
To assist in determining rigging requirements, unit weights are shown as follows:

Remove spreader bars, lifting cables and other rigging equipment.
ELECTRICAL WIRING
WARNING HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

EVAPORATOR COILS

COMPRESSOR 1
Y CG

COMPRESSOR 2

CORNER & CENTER OF GRAVITY LOCATIONS

WARNING
HIGH VOLTAGE
TO AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, DO NOT TAMPER WITH FACTORY WIRING. THE INTERNAL POWER AND CONTROL WIRING OF THESE UNITS ARE FACTORY-INSTALLED AND HAVE BEEN THROUGHLY TESTED PRIOR TO SHIPMENT. CONTACT YOUR LOCAL REPRESENTATIVE IF ASSISTANCE IS REQUIRED.
CAUTION
To prevent damage to the wiring, protect wiring from sharp edges. Follow national electrical code and all local codes and ordinances. Do not route wires through removable access panels.

DATA
Corner Weight – A Corner Weight – B Corner Weight – C Corner Weight – D Unit Shipping Weight Unit Operating Weight X (Inches) Y (Inches)

DFC Weights (lbs)

15T

20T

25T

486

580

446

410

380

499

395

437

621

433

596

517

1839 2108 2198

1724 1993

2083

69.31 64.23 60.50

43.09 43.15 42.98

NOTE: These weights are without accessories installed.

CAUTION

CAUTION
Conduit and fittings must be weather-tight to prevent water entry into the building.
For unit protection, use a fuse or HACR circuit breaker that is in excess of the circuit ampacity, but less than or equal to the maximum overcurrent protection device. DO NOT EXCEED THE MAXIMUM OVERCURRENT DEVICE SIZE SHOWN ON UNIT DATA PLATE.
All line voltage connections must be made through weatherproof fittings. All exterior power supply and ground wiring must be in approved weatherproof conduit.
The main power supply wiring to the unit and low voltage wiring to accessory controls must be done in accordance with these instructions, the latest edition of the National Electrical Code (ANSI/ NFPA 70), and all local codes and ordinances.

To prevent severe damage to the bottom of the unit, do not fork lift unit after wood struts have been removed.
Bring condenser end of unit into alignment with the curb. With condenser end of the unit resting on curb member and using curb as a fulcrum, lower opposite end of the unit until entire unit is seated on the curb. When a rectangular cantilever curb is used, care should be taken to center the unit. Check for proper alignment and orientation of supply and return openings with duct.
Rigging Removal
CAUTION

The main power supply shall be three-phase, three wire. The unit is factory wired for the voltage shown on the unit’s data plate.
NOTE: If supply voltage is 208V, all leads on primary of transformer(s) must be moved from the 230V to the 208V tap.
Main power wiring should be sized for the minimum circuit ampacity shown on the unit’s data plate. Size wires in accordance with the ampacity tables in Article 310 of the National Electrical Code. If long wires are required, it may be necessary to increase the wire size to prevent excessive voltage drop. Wires should be sized for a maximum of 3% voltage drop.

To prevent damage to the unit, do not allow crane hooks and spreader bars to rest on the roof of the unit.
7

CAUTION
To avoid property damage or personal injury due to fire, use only copper conductors.

CAUTION

To prevent improper and dangerous operation due to wiring errors, label all wires prior to disconnection when servicing controls. Verify proper operation after servicing.

NOTE: A weather-tight disconnect switch, properly sized for the unit total load must be installed. An external field supplied disconnect may be mounted on the exterior panel.

Ensure the data plate is not covered by the field-supplied disconnect switch.

· Some disconnect switches are not fused. Protect the power leads at the point of distribution in accordance with the unit data plate.
· The unit must be electrically grounded in accordance with local codes or, in the absence of local codes, with the latest edition of the National Electrical Code (ANSI-NFPA 70). A ground lug is provided for this purpose. Size grounding conductor in accordance with Table 250-95 of the National Electrical Code. Do not use the ground lug for connecting a neutral conductor.
· Connect power wiring to the middle contactor within the main control box or power block, if equipped.

15-25 TON DDC POWER AND LOW VOLTAGE TERMINAL LOCATIONS NOTE: Depending on the options installed, the location of the components may vary in some models.
WARNING

Failure of unit due to operation on improper line voltage or with excessive phase unbalance constitues product abuse and is not covered by the warranty. It may cause severe damage to the unit electrical components.

15-25 TON TSTAT POWER AND LOW VOLTAGE TERMINAL LOCATIONS

Areas Without Convenience Outlet
It is recommended that an independent 115V power source be brought to the vicinity of the roof top unit for portable lights and tools used by the service mechanic.
NOTE: Refer to local codes for requirements. These outlets can also be factory installed.
Units installed on Roof Tops
Main power and low voltage wiring may enter the unit through the side or through the roof curb. Install conduit connectors at the desired entrance locations. External connectors must be weatherproof. All holes in the unit base must be sealed (including those around conduit nuts) to prevent water leakage into building. All required conduit and fittings are to be field supplied. For wiring and/or gas connections entering through roof curb, the through the base kit would be required (TTBCK03).
Supply voltage to roof top unit must not vary by more than 10% of the value indicated on the unit data plate. Phase voltage unbalance must not exceed 2%. Contact your local power company for correction of improper voltage or phase unbalance.

be provided with an access panel large enough to inspect the air chamber downstream of the heat exchanger. A cover should be tightly attached to prevent air leaks.
Ductwork dimensions are shown in the roof curb installation manual.
If desired, supply and return duct connections to the unit may be made with flexible connections to reduce possible unit operating sound transmission.

CONDENSATE DRAIN CONNECTION

ELECTRICAL ENTRANCE LOCATIONS Unit is equipped with a Low Voltage Terminal Block and has Single Point wiring to the contactor.
Low Voltage Control Wiring

Condensate Drain Connection
A 1″ female NPT drain connection is supplied on the end of the condensate pan, with an alternative connection on the bottom of the pan. An extrnal trap must be installed for proper condensate drainage.

NOTE: For models equipped with the DDC controls option, refer to the supplemental DDC literature supplied with the unit for additional information.

1. A 24V thermostat must be installed for unit operation. It may be purchased with the unit or field -supplied. Thermostats may be programmable or electromechanical as required.
2. Locate thermostat or remote sensor in the conditioned space where it will sense average temperature. Do not locate the device where it may be directly exposed to supply air, sunlight or other sources of heat. Follow installation instructions packaged with the thermostat.
3. Use #18 AWG wire for 24V control wiring runs not exceeding 75 feet. Use #16 AWG wire for 24V control wiring runs not exceeding 125 feet. Use #14 AWG wire for 24V control wiring runs not exceeding 200 feet. Low voltage wiring may be National Electrical Code (NEC) Class 2 where permitted by local codes.
4. Route thermostat wires from sub-base terminals to the unit. Control wiring should enter through the duct panel (dimple marks entrance location) or through the specified through the base connection points through the base pan. Connect thermostat and any accessory wiring to low voltage terminal block TB1 in the main control box.
NOTE: Field-supplied conduit may need to be installed depending on unit/curb configuration. Use #18 AWG solid conductor wire whenever connecting thermostat wires to terminals on sub-base. DO NOT use larger than #18 AWG wire. A transition to #18 AWG wire may be required before entering thermostat sub-base.
NOTE: Refer to unit wiring diagrams for thermostat hookups.
CIRCULATING AIR AND FILTERS
Ductwork

Drain Pan (Side View)

Base Rail Open Vent

2″ Min

See NOTE

Drain Plug

Roof Curb

NOTE: Trap should be deep enough to offset maximum unit static difference. A minimum 4″ trap is recommended.

DRAIN CONNECTION
Install condensate drain trap as shown. Use 1″ drain line and fittings or larger. Do not operate without trap. NOTE: All threaded connection use pipe sealer.

Horizontal Drain
Drainage of condensate directly onto the roof may be acceptable; (refer to local code). It is recommended that a small drip pad of either stone, mortar, wood or metal be provided to prevent any possible damage to the roof. When using the horizontal drain connection, check the drain plug in bottom connection to ensure it is tight.

The supply duct from the unit through a wall may be installed without clearance. However, minimum unit clearances must be maintained (see “Clearances” section). The supply duct should

Cleaning
Due to the fact that drain pans in any air conditioning unit will have some moisture in them, algae and fungus will grow due to

airborne bacteria and spores. Periodic cleaning is necessary to prevent this build-up from plugging the drain.

Contractor Responsibility The installing contractor must be certain that:

STARTUP, ADJUSTMENTS, AND CHECKS
WARNING
HIGH VOLTAGE
To avoid personal injury or death due to electrical shock, bond the frame of this unit to the building electrical ground by use of the grounding terminal provided or other acceptable means. Disconnect all power before servicing or installing this unit.

· All supply and return air ductwork is in place, properly sealed, and corresponds with installation instructions.
· All thermostats are mounted and wired in accordance with installation instructions.
· All electric power, all gas, hot water or steam line connections, and the condensate drain installation have been made to each unit on the job. These main supply lines must be functional and capable of operating all units simultaneously.
· Clean Air filters are in place.

Roof Curb Installation Check

CAUTION
To prevent property damage or personal injury, Do not start the unit until all necessary pre-checks and test have been performed.

Inspect the roof curb for correct installation. The unit and curb assembly should be level. Inspect the flashing of the roof mounting curb to the roof, especially at the corners, for good workmanship. Also check for leaks around gaskets. Note any deficiencies in a separate report and forward to the contractor.

WARNING

Obstructions, Fan Clearance and Wiring

MOVING MACHINERY HAZARD! To prevent possible personal injury or death, disconnect power to the unit and padlock in the “OFF” position before servicing fans.
Heating Startup

Remove any extraneous construction and shipping materials that may be found during this procedure. Rotate all fans manually to check for proper clearances and that they rotate freely. Check for bolts and screws that may have jarred loose during shipment to the job site. Retighten if necessary. Re-tighten all electrical connections.

On new installations, or if a major component has been replaced, the operation of the unit must be checked.
Check unit operation as outlined in the following instructions. If any sparking, odors, or unusual sounds are encountered, shut off electrical power and recheck for wiring errors, or obstructions in or near the blower motors.
The Startup, Adjustments, and Checks procedure provides a stepby-step sequence which, if followed, will assure the proper startup of the equipment in the minimum amount of time. Air balancing of duct system is not considered part of this procedure. However, it is an important phase of any air conditioning system startup and should be performed upon completion of the Startup, Adjustments, and Checks procedure. The Startup, Adjustments, and Checks procedure at outside ambients below 55°F should be limited to a readiness check of the refrigeration system with the required final check and calibration left to be completed when the outside ambient rises above 55°F.
Temporary Heating Or Cooling
If the unit is to be used for temporary heating or cooling, a “Startup, Adjustments, and Checks” must first be performed in accordance with this manual. Damage or repairs due to failure to comply with these requirements are not covered under the warranty. After the machines are used for temporary heating or cooling, inspect the coils, fans, and motors for unacceptable levels of construction dust and dirt and install new filters.

Field Duct Connections Verify that all duct connections are tight and that there is no air bypass between supply and return.
Filter Section Check Remove filter section access panels and check that filters are properly installed. Note airflow arrows on filter frames.
Pre-startup Precautions It is important to your safety that the unit has been properly grounded during installation. Check ground lug connection in main control box for tightness prior to closing circuit breaker or disconnect switch. Verify that supply voltage on line side of disconnect agrees with voltage on unit identification plate and is within the utilization voltage range as indicated in Appendix C Electrical Data.
System Voltage – That nominal voltage value assigned to a circuit or system for the purpose of designating its voltage class.
Nameplate Voltage – That voltage assigned to a piece of equipment for the purpose of designating its voltage class and for the purpose of defining the minimum and maximum voltage at which the equipment will operate.
Utilization Voltage – The voltage of the line terminals of the equipment at which the equipment must give fully satisfactory performance. Once it is established that supply voltage will be maintained within the utilization range under all system conditions, check and calculate if an unbalanced condition exists between phases. Calculate percent voltage unbalance as follows:

Three Phase Models

2) MAXIMUM VOLTAGE DEVIATIONS

3) PERCENT VOLTAGE UNBALANCE

= 100 X

FROM AVERAGE VOLTAGE 1) AVERAGE VOLTAGE

HOW TO USE THE FORMULA: EXAMPLE: With voltage of 220, 216, and 213 1) Average Voltage = 220+216+213=649 / 3 = 216 2) Maximum Voltage Deviations from Average Voltage = 220 – 216 = 4

3) Percent Voltage Unbalance = 100 x

4 216

400 216

= 1.8%

Percent voltage unbalance MUST NOT exceed 2%.

Note: On units with DDC controls installed, air flow adjustments are made through settings in the DDC controller and speed tap adjustments are not required. Refer to the DDC User Manual for details on making airflow adjustments. Individual settings are available for Fan Only, Low Stage Cooling, High Stage Cooling, Low Stage Heating, and High Stage Heating which can be adjusted as needed to meet airflow requirements.

AIR FLOW ADJUSTMENTS
When the final adjustments are complete, the current draw of the motor should be checked and compared to the full load current rating of the motor. The amperage must not exceed the service factor stamped on the motor nameplate. The total airflow must not be less than that required for operation of the electric heaters or the furnace.
If an economizer is installed, check the unit operating balance with the economizer at full outside air and at minimum outside air.
NOTE: High Stage Airflow setting below 300 CFM/Ton is not recommended, as evaporator freezing or poor unit performance is possible.
· The unit has one set of taps for cooling (T1-T5) and a second set of taps for heating (T6-T10).
· When Heat is called TB1-W1 will also call TB1-DH activating the second set of taps T6-T10.
· If cooling and heating is called at the same time heating will take priority and T6-T10 will be chosen by default.
· Taps T1 and T2 are for low cool operation (cooling stage 1) and Taps T3 to T5 are for high cool operation (cooling stage 2).
· Taps T6 and T7 are for low heat operation (heating stage 1) and taps T8 to T10 are for high heat operation (heating stage 2).

Taps are selected by changing the position of the low voltage leads on the terminal block TB1. Refer to Appendix A for blower performance at each speed tap.

Fan speed for G (GR) is fixed at TB1-T1 and cannot be moved. Low Cool Y1, Yellow (YL) is movable and set to TB1-T1. Low Heat W1, White (WH) is movable and set to TB1-T6. High Cool Y2, Purple (PU) is movable and set to TB1-T3. High Heat W2, Brown (BR) is movable and set to TB1-T8.

These wires can be moved together or separately and placed on any unoccupied terminal.

Note: YL can be moved to tap T3 as long as YL does not share the tap with PU. WH can be moved to tap T7 as long as WH does not share the tap with BR. If high cool operation is set at Tap T4 or T5, low cool operation must be set at T2. If high heat operation is set at T9 or T10, low heat operation must be set at T7.
11

GR (FAN) Energized during Heat Mode

** TB1-DH is energized when the unit is in heat mode. When TB1-DH is energized, the blower motor operates at a new group of programmed speeds, T6-T10, in place of T1-T5.

BR (Heating Stage 2) PU (Cooling Stage 2)
WH (Heating Stage 1) YL (Cooling Stage 1)

· Move YELLOW (YL) wire from TB1-T1 to T2 to change blower speed during cooling stage 1 operation. (Do not move wires YL and PU to the same taps)

· Move WHITE (WH) wire from TB1-T6 to T7 to change blower speed during heating stage 1 operation. (Do not move wires WH and BR to the same taps)

· Move PURPLE (PU) wire from TB1-T3 to T4 or T5 to change blower speed during cooling stage 2 operation. (Do not move wires YL and PU to the same taps)

· Move BROWN (BR) wire from TB1-T8 to T9 or T10 to change blower speed during heating stage 2 operation. (Do not move wires WH and BR to the same taps)

DFC/DFG OPERATION and WIRE RANGE CHART

DFC/DFG OPERATION

WIRE RANGE

G Y1 Y2 W1 W2 DH T1 T2 T3 T4 T5 T6 T7 T8 T9 T10

Fan Only

Cooling Mode LO X X

Cooling Mode HI X X X

Heating Mode Lo X

Heating Mode HI X

X= 24V Signal = Range of AVAILABLE TAPS
For wire color information and placement, view DFC/DFG Model Wiring

Electrical Input Check
Make preliminary check of evaporator fan ampere draw and verify that motor nameplate amps are not exceeded. A final check of amp draw should be made upon completion of air balancing of the duct system (see Appendix B).

ing superheat, run the unit in cooling for 15-20 minutes or until refrigerant pressures stabilize. Use the following guidelines and methods to check unit operation and ensure that the refrigerant charge is within limits.

Refrigeration System The unit is equipped with a thermal expansion valve as a metering device.
Ensure the hold-down bolts on the compressor are secure and have not vibrated loose during shipment. Check that vibration grommets have been installed. Visually check all piping for damage and leaks; repair if necessary. The entire system has been factory charged and tested, making it unnecessary to field charge. Factory charges are shown on the unit’s nameplate. To confirm charge levels or, if a leak occurs and charge needs to be added to the system, it is recommended to evacuate the system and recharge refrigerant to unit nameplate specifications. This unit has been rated in the cooling mode at the AHRI rated conditions of: Indoor (80°db / 67°wb) and outdoor (95°db).
While operating at this condition, the superheat and subcool for each circuit for each unit should fall within the values listed in the table below. The superheat is measured at the suction service port located near the compressor. The subcool is measured at the liquid line service port.
SUPERHEAT AND SUBCOOLING
Checking Subcooling
NOTE: Units with a TXV should be charged to Subcooling only. Make sure the air flow is correct before making any adjustments.
EXAMPLE: a. Liquid Line Pressure = 417 PSI b. Corresponding Temp. = 120°F c. Thermometer on Liquid line = 109°F.

For TXV systems, to adjust superheat, unscrew the cover from the expansion valve, locate the adjustment screw, and turn it clockwise (in) to increase superheat or counterclockwise (out) to decrease superheat. It is recommended to make small adjustments at a time, 1/8-1/4 turn increments. Replace adjustment cap. Wait a minimum of 15 minutes between adjustments to allow time for the TXV and pressures to stabilize.
Refrigerant Charge Check NOTE: For optimal performance, follow charging instructions below.
Units with Fixed Orifice Devices
All package units with fixed orifice devices are charged using the superheat method at the compressor suction line. To increase super heat, remove charge and to decrease super heat, add charge. After superheat is adjusted, it is recommended to check unit subcooling at the condenser coil liquid line. See Figure 14: DESIGN SUPERHEAT AND SUBCOOLING table for targets on each model.
Units with Expansion valve (TXV)
Single Stage Cooling Application: Refer to the Design Superheat & Subcooling table
Two-Stage Cooling Application: Run unit on Low Stage cooling and refer to Design Superheat & Subcooling table.
1. Purge gauge lines. Connect service gauge manifold to access fittings. Run system at least 10 minutes to allow pressure to stabilize.
2. Temporarily install thermometer on liquid (small) line near liquid line access fitting with adequate contact and insulate for best possible reading.

To obtain the amount of subcooling, subtract 109°F from 120°F. The difference is 11° subcooling. See the specification sheet or technical information manual for the design subcooling range for your unit. SUBCOOLING FORMULA = SATURATED LIQUID LINE TEMPERA-
TURE – LIQUID LINE TEMPERATURE

3. Check subcooling and superheat. System should have a subcooling and superheat within the range listed on the Design Superheat and Subcooling table.
a. If subcooling and superheat are low, adjust TXV superheat, then check subcooling.

Checking Superheat EXAMPLE: a. Suction Pressure = 143 PSI b. Corresponding Temp. = 50°F c. Thermometer on Suction Line = 59°F
To obtain the degrees temperature of superheat, subtract 50.0 from 59.0°F. The difference is 9° Superheat. The 9° Superheat would fall in the ± range of allowable superheat.
SUPERHEAT = SUCTION LINE TEMP – SAT. SUCTION TEMP.
Superheat Adjustment NOTE: Superheat adjustments should not be made until indoor ambient conditions have stabilized. This could take up to 24 hours depending on indoor temperature and humidity. Before check-
13

NOTE: To adjust superheat, turn the valve stem clockwise to increase and counterclockwise to decrease. If an under charge is suspected, recover the charge, re-evacuate the system and recharge per data plate. No adjustments should be made if suspecting a charge issue.
b. If subcooling is low and superheat is high, add charge to raise subcooling then check superheat.
c. If subcooling and superheat are high, adjust TXV valve superheat, then check subcooling.
d. If subcooling is high and superheat is low, adjust TXV valve superheat and remove charge to lower the subcooling.
NOTE: Do NOT adjust the charge based on suction pressure unless there is a gross undercharge.
4. Disconnect manifold set, installation is complete.

Design Superheat & Subcooling

Model

Circuit

Superheat ± 20F

Subcooling ± 10F

Expansion
Device

DFG180 1

TXV

DFG180 2

TXV

DFG240 1

TXV

DFG240 2

TXV

DFG300 1

TXV

DFG300 2

TXV

Outdoor Ambent
(°F) 95 95 95 95 95 95

cooling operation until the thermostat is satisfied.
8. Disconnecting the jumper wire between R and Y1 and Y2 and between R and G on TB1 terminal block will simulate a satisfied thermostat. The compressors will cycle off and IIC (pin 12) will initiate its time delay cycle. The compressor and the supply fan will cycle off.
9. After a time delay of approximately 3 minutes, the compressor control circuits will be ready to respond to a subsequent call for cooling from the wall thermostat.
10. Open disconnect switch. Reconnect the field thermostat
wire at terminal R on terminal block TB1.

NORMAL SEQUENCE OF OPERATION – COOLING
Refrigeration Sequence Check
With the disconnect switch open, remove the field connected thermostat wire from terminal R on TB1 terminal block. Place a jumper across terminals R and G, and across R and Y on TB1 terminal block. Close the disconnect switch. The following operational sequence should be observed.
1. Current through primary winding of transformer TRANS1 energizes the 24-volt control circuit.
2. To simulate a mechanical call for cooling from the wall thermostat, place a jumper across terminals R and Y1 of terminal block TB1.
3. UNIT WITH ECONOMIZER OPTION: The compressor circuit is interlocked through terminals 3 and 4 of the economizer module. If the outdoor air enthalpy (temperature and humidity) is not suitable for cooling, the economizer terminals will be closed permitting compressor to be energized.
4. The blower contactor closes its contacts L1, L2 and L3 to T1, T2 and T3 to provide power to the supply fan motor.
5. Compressor contactor closes its contacts L1, L2 and L3 to T1, T2 and T3 to provide power to the compressor motor COMP 1; COMP 2, if conditions are correct. In addition, contactor C1 closes its contact L3 to T3 , energizing the condenser fan motor.
WARNING
BURN HAZARD! DO NOT TOUCH! DISCHARGE LINE MAY BE HOT!
6. Check that each compressor is operating correctly. The scroll compressors in these units MUST operate in the proper rotation. To ensure the compressors are operating in the correct direction, check the compressor discharge line pressure or temperature after each compressor is started. The discharge pressure and discharge line temperature should increase. If this does not occur and the compressor is producing an exceptional amount of noise, perform the following checks. · Ensure all compressors are operating in the proper direction. If a single motor is operating backwards, check the power wiring for that motor and correct any leads that have been interchanged at the contactor or at the motor.
7. With all safety devices closed, the system will continue

MAINTENANCE
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
To prevent personal injury or death due to improper installation, adjustment, alteration, service or maintenance, refer to this manual. For additional assistance or information, consult a qualified installer, service agency or the gas supplier.
CAUTION
This unit must be ISOLATED from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing equal to or less than 1/2 psig.
Preventive maintenance is the best way to avoid unnecessary expense and inconvenience. Have this system inspected at regular intervals by qualified service personnel, at least twice a year. Routine maintenance should cover the following items:
1. Tighten, set screws, and wire connections. 2. Clean evaporator mechanically or with cold water, if
necessary. Usually any fouling is only matted on the entering air face of the coil and can be removed by brushing. 3. Replace filters as needed (see below). 4. Check for blockage of condensate drain. 5. Check power and control voltages. 6. Check running amperage. 7. Check operating temperatures and pressures. 8. Check and adjust temperature and pressure controls. 9. Check and adjust damper linkages. 10. Check operation of all safety controls. 11. Examine gas furnaces (see below and the User’s Information Manual). 12. Check condenser fans and tighten set screws.

Filters
CAUTION
TO PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF EQUIPMENT EFFICIENCY OR EQUIPMENT DAMAGE DUE TO DUST AND LINT BUILD UP ON INTERNAL PARTS, NEVER OPERATE UNIT WITHOUT AN AIR FILTER INSTALLED IN THE RETURN AIR SYSTEM

STEP 1: Remove Surface Debris
Remove surface dirt, leaves, fibers, etc. with a vacuum cleaner (preferably with a brush or other soft attachment rather than a metal tube), compressed air blown from the inside out, and/or a soft bristle (not wire!) brush. Do not impact or scrape the coil with the vacuum tube, air nozzle, etc.

Every application may require a different frequency of replacement of dirty filters. Filters must be replaced at least every three (3) months during operating seasons.
Dirty filters are the most common cause of inadequate heating or cooling performance. Filter inspection should be made at least every two months; more often if necessary because of local conditions and usage.
Dirty throwaway filters should be discarded and replaced with a new, clean filter.
Disposable return air filters are supplied with this unit. See the unit Specification Sheet or Technical Manual for the correct size and part number. To remove the filters, remove the filter access panel on return side of the unit.
Cabinet Finish Maintenance Use a fine grade automotive wax on the cabinet finish to maintain the finish’s original high luster. This is especially important in installations with extended periods of direct sunlight.
Clean Outside Coil (Qualified Servicer Only) The coil with the outside air flowing over it should be inspected annually and cleaned as frequently as necessary to keep the finned areas free of lint, hair and debris. NOTE: Clean the opposite direction of air flow.

STEP 2: Rinse
Rinse the coil by following procedure:
1. Rinse the coil by approved MCHE cleaner first, or rinsing by water directly;
2. Waiting for 5 minutes;
3. Wash the coil by water;
Adjust the angle of gimbaled nozzle and insert it through fans. Using an extension rod if the nozzle cannot reach the bottom side. Preferably cleaning the coils from the insideout and top to bottom (see figure 1), running the water through every fin passage until it comes out clean. The fins of MicroChannel coils are stronger than traditional tube & fin coil fins but still need to be handled with care. Do not hit the coil with the hose. We recommend placing your thumb over the end of the hose to obtain a gentler spray and reduce the possibility of impact damage. Please PAY MORE ATTENTION when using a pressure cleaning equipment to prevent damage.

Maintenance of MicroChannel Heat Exchangers (MCHE) Frequent servicing is essential to maintaining the required MCHE performance. For every installed Danfoss MCHE, service records must be documented.

Figure 1

CAUTION
Prior to servicing MCHE, be sure to disconnect the power supply and use lock-out methods to prevent the power from accidentally being turned on.
Shut Down Periods During periods when the MCHE is not operated for longer than a week, the MCHE must be completely cleaned following the cleaning procedure. This practice must also be performed during short shut-down periods where corrosive deposits accumulate on the MCHE.

Highest pressure of cleaning equipment shall not exceed 15 bar, and tentatively move the cleaning equipment from far to near to prevent damage.
· KEEP the outlet of washer away from coil for at least 4in (see figure 2);
· KEEP the water gun perpendicular to the coil surface and the angle error shall less than 20°, or ±40° if the distance from washer to coil is more than 12in (see figure 2);
· Water outlet angle for high pressure cleaning equipment shall over 15° (see figure 3).

Cleaning Procedure Relative to tube & fin heat exchangers, MicroChannel heat exchanger coils tend to accumulate more dirt on the surface of the coil and less dirt inside the coil, making them easier to clean. Follow the steps below for proper cleaning:
15

Figure 2
Figure 3
Warranty claims related to cleaning damage, especially for incorrect pressure washing operation, or corrosion resulting from applying non-recommended cleaners, will NOT be honored.
STEP 3: Remove Surface Debris Depending on the installation and fin geometry, MicroChannel
heat exchangers could possibly retain more water compared to traditional tube & fin coils. It is advised to blow off or vacuum out the residual water from the coil to speed up drying and prevent pooling. Daikin recommends a quarterly cleaning of the coils, as the minimum. The cleaning frequency should be increased depending on the level of dirt/dust accumulation and the environment (e.g., coastal areas with chlorides and salts) or industrial areas with aggressive substances.
WARNING
Field applied coatings are not recommended for brazed aluminum MicroChannel heat exchangers. MicroChannel heat exchangers must NOT be coated using any other coating, Coating of a coil using a supplier or coating process is not approved and voids the product warranty. It may also reduce the lifetime and/or the performance of the MicroChannel heat exchanger.
Condenser Fans Bearings on the condenser fan motors are permanently lubricated. No additional oiling is required.
Functional Parts Refer to the unit Parts Catalog for a list of functional parts. Parts are available from your distributor.
16

APPENDIX A BLOWER PERFORMANCE DATA

DIRECT DRIVE – STANDARD

DFC1803D Standard Static

Speed Tap

Static

Airflow

RPM 1

RPM 2

BHP 1

BHP 2

0.2

3198

422

434

0.19

0.20

0.4

2752

503

498

0.23

0.22

0.6

2055

609

564

0.27

0.25

0.8

1372

674

648

0.30

0.29

–

1.2

–

0.2

4368

496

509

0.35

0.4

3945

567

568

0.39

0.40

0.6

3374

654

626

0.46

0.44

0.8

3899

714

696

0.50

0.48

2318

761

751

0.53

0.52

1.2

1766

791

826

0.55

0.57

0.2

5124

544

558

0.50

0.51

0.4

4716

609

613

0.56

0.6

4222

685

667

0.63

0.61

0.8

3643

741

728

0.68

0.67

3264

788

778

0.72

0.71

1.2

2756

827

845

0.76

0.77

0.2

7370

685

705

1.33

1.37

0.4

7008

733

750

1.43

1.46

0.6

6703

779

791

1.52

1.54

0.8

6574

826

829

1.61

6021

873

868

1.70

1.69

1.2

5643

928

911

1.80

1.77

0.2

7626

702

722

1.27

1.31

0.4

7265

749

766

1.36

1.39

0.6

6970

793

806

1.44

1.46

0.8

4105

837

843

1.51

1.53

6316

882

881

1.60

1.59

1.2

5955

936

922

1.69

1.67

0.2

7227

677

695

1.11

1.14

0.4

6858

726

741

1.19

1.22

0.6

6540

774

783

1.27

1.29

0.8

6188

820

823

1.35

–

1.2

–

0.2

7431

690

709

1.19

1.22

0.4

7065

738

754

1.27

1.30

0.6

6760

784

795

1.35

1.37

0.8

6423

829

833

1.43

1.44

6084

875

872

1.51

1.2

–

0.2

7669

705

724

1.29

1.32

0.4

7308

751

769

1.37

1.41

0.6

7016

795

809

1.45

1.48

0.8

6696

839

846

1.53

1.55

6366

884

883

1.62

1.61

1.2

6007

938

923

1.71

1.69

0.2

7783

712

732

1.34

1.38

0.4

7424

758

776

1.42

1.46

0.6

7138

800

815

1.50

1.53

0.8

6826

843

851

1.59

1.60

6501

888

1.67

1.2

6149

942

928

1.77

1.74

0.2

7885

719

739

1.38

1.42

0.4

7527

764

782

1.47

1.51

T10

0.6

7247

805

821

1.55

1.58

0.8

6941

848

857

1.63

1.65

6620

892

893

1.72

1.2

6275

946

932

1.82

1.79

DFC2403D Standard Static

Speed Tap

Static

Airflow

RPM 1

RPM 2

BHP 1

BHP 2

0.2

4426

504

521

0.29

0.30

0.4

4019

574

579

0.33

0.6

3466

660

636

0.38

0.37

0.8

2911

717

701

0.41

0.40

2424

772

756

0.44

0.43

1.2

1881

809

825

0.47

0.2

5830

591

608

0.62

0.64

0.4

5453

649

659

0.68

0.69

0.6

5056

711

707

0.75

0.74

0.8

4597

771

757

0.81

0.80

4141

832

803

0.88

0.85

1.2

3702

867

861

0.91

0.2

6929

659

677

0.98

1.00

0.4

6571

709

724

1.05

1.07

0.6

6269

756

765

1.12

1.13

0.8

5883

815

806

1.21

1.19

5461

876

845

1.30

1.25

1.2

5096

910

895

1.35

1.32

0.2

9133

798

821

2.08

2.14

0.4

8793

837

860

2.19

2.25

0.6

8538

871

895

2.28

2.34

0.8

8286

912

929

2.38

2.43

7991

947

960

2.48

2.51

1.2

7739

984

992

2.57

2.59

0.2

9371

813

837

2.26

2.33

0.4

9030

852

875

2.37

2.43

0.6

8756

888

912

2.47

2.53

0.8

8516

924

946

2.57

2.63

8245

953

977

2.65

2.71

1.2

8000

990

1007

2.75

2.80

0.2

7986

725

745

1.42

1.46

0.4

7641

769

787

1.51

1.54

0.6

7394

805

824

1.58

1.61

0.8

7076

860

859

1.68

–

1.2

–

0.2

8329

746

767

1.59

1.64

0.4

7987

789

808

1.68

1.73

0.6

7748

823

844

1.76

1.80

0.8

7450

875

878

1.87

7096

925

911

1.98

1.95

1.2

–

0.2

8663

768

789

1.78

1.83

0.4

8323

808

829

1.88

1.92

0.6

8083

842

865

1.95

2.01

0.8

7806

890

898

2.06

2.08

7473

935

930

2.17

2.16

1.2

7204

970

966

2.25

2.24

0.2

9133

798

821

2.08

2.14

0.4

8793

837

860

2.19

2.25

0.6

8538

871

895

2.28

2.34

0.8

8286

912

929

2.38

2.43

7991

947

960

2.48

2.51

1.2

7739

984

992

2.57

2.59

0.2

9371

813

837

2.26

2.33

0.4

9030

852

875

2.37

2.43

T10

0.6

8756

888

912

2.47

2.53

0.8

8516

924

946

2.57

2.63

8245

953

977

2.65

2.71

1.2

8000

990

1007

2.75

2.80

NOTES: High static airflow requires installation of high static kit. Air flow tables represent dry coil with filters installed; SCFM correction factor for wet coil is 4%.

Speed Tap

Static

0.2

0.4

0.6

0.8

1.2

0.2

0.4

0.6

0.8

1.2

0.2

0.4

0.6

0.8

1.2

0.2

0.4

0.6

0.8

1.2

0.2

0.4

0.6

0.8

1.2

0.2

0.4

0.6 0.8

1.2

0.2

0.4

0.6 0.8

1.2

0.2

0.4

0.6

0.8

1.2

0.2

0.4

0.6

0.8

1.2

0.2

0.4

T10

0.6

0.8

1.2

APPENDIX A BLOWER PERFORMANCE DATA

DIRECT DRIVE – STANDARD

DFC3003D Standard Static

Airflow

RPM 1

RPM 2

BHP 1

BHP 2

5835

605

594

0.57

0.56

5496

659

654

0.63

0.62

5095

706

736

0.67

0.70

4723

757

785

0.72

0.75

4182

836

848

0.79

0.81

3784

874

884

0.83

0.84

7123

669

647

0.91

0.88

6801

717

701

0.97

0.95

6439

761

1.03

6144

808

813

1.10

5766

864

877

1.17

1.19

5416

902

921

1.22

1.25

8988

809

767

1.66

1.58

8693

847

810

1.74

1.67

8401

885

843

1.82

1.73

8197

923

892

1.90

1.83

7998

954

951

1.96

7722

988

1000

2.03

2.06

10778

1051

980

3.13

2.92

10516

1077

1007

3.21

3.00

10323

1106

1027

3.30

3.06

10162

1132

1061

3.37

3.16

10002

1152

1097

3.44

3.27

9806

1179

1132

3.52

3.38

10958

1088

1013

3.38

3.15

10701

1112

1038

3.45

3.22

10521

1140

1058

3.54

3.29

10359

1164

1089

3.61

3.38

10187

1186

1120

3.68

3.48

10000

1211

1152

3.76

3.58

9218

832

787

1.79

1.70

8927

869

828

1.87

1.79

–

9642

879

828

2.07

1.95

9358

913

866

2.15

2.04

9096

949

893

2.23

2.10

8916

983

938

2.31

2.21

8754

1008

991

2.37

2.33

–

9934

1083

971

2.68

2.40

9735

1110

999

2.75

2.47

9559

1138

1027

2.82

2.54

9379

1162

1056

2.88

2.61

9201

1187

1086

2.94

2.69

9006

1212

1120

3.00

2.77

10398

1123

1008

3.04

2.73

10203

1149

1034

3.11

2.80

10034

1176

1060

3.18

2.87

9863

1199

1087

3.24

2.94

9698

1222

1116

3.30

3.02

9516

1245

1147

3.37

3.10

10958

1088

1013

3.38

3.15

10701

1112

1038

3.45

3.22

10521

1140

1058

3.54

3.29

10359

1164

1089

3.61

3.38

10187

1186

1120

3.68

3.48

10000

1211

1152

3.76

3.58

NOTES: High static airflow requires installation of high static kit. Air flow tables represent dry coil with filters installed; SCFM correction factor for wet coil is 4%.

APPENDIX A BLOWER PERFORMANCE DATA

DIRECT DRIVE – HIGH STATIC

DFC1803D High Static

Speed Tap

Static

Airflow

RPM 1

RPM 2

BHP 1

BHP 2

0.2

6622

626

0.25

0.4

6195

666

667

0.27

0.6

5791

709

706

0.28

0.8

5392

749

748

0.30

4960

789

792

0.31

0.32

1.2

4503

836

0.33

1.4

3515

956

911

0.38

0.36

1.6

2887

998

978

0.40

0.39

1.8

2360

1047

1020

0.42

0.41

1807

1082

1067

0.43

2.2

1305

1109

1103

0.44

0.2

6622

626

0.25

0.4

6195

666

667

0.27

0.6

5791

709

706

0.28

0.8

5392

749

748

0.30

4960

789

792

0.31

0.32

1.2

4503

836

0.33

1.4

3515

956

911

0.38

0.36

1.6

2887

998

978

0.40

0.39

1.8

2360

1047

1020

0.42

0.41

1807

1082

1067

0.43

2.2

1305

1109

1103

0.44

0.2

8201

738

736

0.84

0.4

7841

776

774

0.89

0.88

0.6

7516

814

811

0.93

0.8

7185

852

849

0.97

6864

887

885

1.01

1.2

6517

926

923

1.06

1.05

1.4

5970

991

973

1.13

1.11

1.6

5502

1033

1020

1.18

1.16

1.8

5050

1082

1059

1.24

1.21

4609

1122

1101

1.28

1.26

2.2

4136

1164

1141

1.33

1.30

0.2

8778

780

776

1.12

0.4

8441

816

813

1.17

0.6

8141

852

850

1.23

1.22

0.8

7832

889

887

1.28

7543

924

921

1.33

1.32

1.2

7231

960

957

1.38

1.4

6814

1009

998

1.45

1.44

1.6

6401

1051

1039

1.51

1.50

1.8

5980

1098

1077

1.58

1.55

5580

1139

1117

1.64

1.61

2.2

5126

1184

1157

1.70

1.67

0.2

9286

816

811

1.40

1.39

0.4

8969

851

848

1.46

0.6

8688

886

884

1.52

0.8

8398

923

920

1.58

8132

956

952

1.64

1.63

1.2

7849

990

987

1.70

1.69

1.4

7530

1028

1022

1.76

1.75

1.6

7162

1068

1059

1.83

1.82

1.8

6771

1114

1096

1.91

1.88

6407

1155

1134

1.98

1.95

2.2

5974

1201

1173

2.06

2.01

Speed Tap

Static

Airflow

RPM 1

RPM 2

BHP 1

BHP 2

0.2

8163

925

854

1.33

1.23

0.4

7902

953

880

1.37

1.27

0.6

7642

979

913

1.41

1.31

0.8

7399

1006

944

1.45

1.36

7146

1033

976

1.49

1.41

1.2

6893

1061

1010

1.53

1.45

1.4

6626

1090

1047

1.57

1.51

1.6

6349

1122

1082

1.61

1.56

1.8

6035

1154

1118

1.66

1.61

5765

1184

1148

1.70

1.65

2.2

5401

1215

1189

1.75

1.71

0.2

9129

805

800

2.63

1.63

0.4

8806

840

837

2.75

1.71

0.6

8519

876

873

2.86

1.78

0.8

8224

912

910

2.98

1.86

7951

946

942

3.09

1.92

1.2

7659

981

977

3.21

1.99

1.4

7312

1022

1015

3.34

2.07

1.6

6930

1063

1053

3.47

2.15

1.8

6530

1109

1090

3.62

2.22

6154

1150

1128

3.76

2.30

2.2

5715

1196

1168

3.91

2.38

0.2

9286

816

811

2.67

1.65

0.4

8969

851

848

2.78

1.73

0.6

8688

886

884

2.90

1.80

0.8

8398

923

920

3.02

1.88

8132

956

952

3.12

1.94

1.2

7849

990

987

3.24

2.01

1.4

7530

1028

1022

3.36

2.08

1.6

7162

1068

1059

3.49

2.16

1.8

6771

1114

1096

3.64

2.23

6407

1155

1134

3.78

2.31

2.2

5974

1201

1173

3.93

2.39

0.2

9405

825

820

2.70

1.67

0.4

9091

860

856

2.81

1.75

0.6

8815

894

892

2.92

1.82

0.8

8529

930

928

3.04

1.89

8268

963

960

3.15

1.96

1.2

7991

997

994

3.26

2.03

1.4

7692

1033

1028

3.38

2.10

1.6

7334

1073

1064

3.51

2.17

1.8

6951

1118

1100

3.65

2.24

6595

1159

1138

3.79

2.32

2.2

6168

1205

1177

3.94

2.40

0.2

9495

831

826

2.72

1.68

0.4

9185

866

862

2.83

1.76

0.6

8911

901

898

2.94

1.83

0.8

8629

936

934

3.06

1.90

8371

969

965

3.17

1.97

T10

1.2

8098

1003

999

3.28

2.04

1.4

7814

1037

1033

3.39

2.11

1.6

7464

1076

1068

3.52

2.18

1.8

7086

1121

1104

3.66

2.25

6737

1162

1141

3.80

2.33

2.2

6314

1208

1180

3.95

2.41

NOTES: High static airflow requires installation of high static kit. Air flow tables represent dry coil with filters installed; SCFM correction factor for wet coil is 4%.

APPENDIX A BLOWER PERFORMANCE DATA DIRECT DRIVE – HIGH STATIC

DFC2403D High Static

Speed Tap

Static

Airflow

RPM 1

RPM 2

BHP 1

BHP 2

Speed Tap

Static

Airflow

RPM 1

RPM 2

BHP 1

BHP 2

0.2

6412

631

616

0.71

0.69

0.2

9125

822

779

1.74

1.65

0.4

6081

683

673

0.77

0.76

0.4

8832

860

821

1.82

1.74

0.6

5697

729

745

0.82

0.84

0.6

8546

898

852

1.90

1.80

0.8

5360

778

796

0.88

0.90

0.8

8348

935

901

1.98

1.91

4895

846

859

0.95

0.97

8158

964

958

2.04

2.03

1.2

4519

884

900

1.00

1.01

1.2

7887

998

1007

2.11

2.13

1.4

4139

927

948

1.04

1.07

1.4

7592

1029

1063

2.18

2.25

1.6

3635

987

981

1.11

1.10

1.6

7272

1072

1109

2.27

2.35

1.8

3278

1034

1012

1.16

1.14

1.8

–

2968

1070

1043

1.21

1.18

–

2.2

2662

1098

1083

1.24

1.22

2.2

–

0.2

6797

651

632

0.81

0.79

0.2

9412

852

805

1.91

1.81

0.4

6471

700

688

0.88

0.86

0.4

9124

888

845

1.99

1.90

0.6

6099

746

753

0.93

0.94

0.6

8851

925

874

2.08

1.96

0.8

5784

793

804

0.99

1.00

0.8

8663

960

920

2.15

2.07

5368

855

868

1.07

1.08

8490

987

976

2.22

2.19

1.2

5006

893

911

1.12

1.14

1.2

8232

1020

1024

2.29

2.30

1.4

4638

934

962

1.17

1.20

1.4

7947

1050

1079

2.36

2.42

1.6

4160

992

997

1.24

1.25

1.6

7646

1090

1124

2.45

2.52

1.8

3810

1039

1029

1.30

1.29

1.8

7366

1129

1155

2.53

2.59

3510

1076

1060

1.34

1.33

7134

1168

1186

2.62

2.66

2.2

3192

1106

1099

1.38

1.37

2.2

–

0.2

9468

859

811

1.95

1.84

0.2

9695

885

834

2.10

1.98

0.4

9181

894

850

2.03

1.93

0.4

9412

919

871

2.19

2.07

0.6

8911

930

878

2.11

1.99

0.6

9153

954

897

2.27

2.13

0.8

8724

966

925

2.19

2.10

0.8

8974

988

942

2.35

2.24

8554

992

980

2.25

2.22

8814

1013

995

2.41

2.37

1.2

8298

1025

1027

2.33

1.2

8568

1045

1042

2.48

1.4

8015

1054

1082

2.39

2.45

1.4

8293

1073

1095

2.55

2.60

1.6

7718

1094

1128

2.48

2.56

1.6

8010

1111

1140

2.64

2.71

1.8

7441

1133

1158

2.57

2.63

1.8

7743

1148

1170

2.73

2.78

7210

1171

1189

2.66

2.70

7518

1186

1201

2.82

2.86

2.2

6884

1209

1218

2.74

2.76

2.2

7200

1223

1229

2.91

2.92

0.2

9881

909

854

2.24

2.11

0.2

9881

909

854

2.29

2.16

0.4

9602

941

890

2.32

2.20

0.4

9602

941

890

2.38

2.25

0.6

9353

976

915

2.41

2.26

0.6

9353

976

915

2.46

2.31

0.8

9179

1008

959

2.49

2.37

0.8

9179

1008

959

2.55

2.42

9025

1032

1009

2.55

2.49

9025

1032

1009

2.61

2.55

1.2

8787

1063

1055

2.62

2.60

1.2

8787

1063

1055

2.68

2.66

1.4

8519

1090

1107

2.69

2.73

1.4

8519

1090

1107

2.75

2.79

1.6

8248

1127

1151

2.78

2.84

1.6

8248

1127

1151

2.85

2.91

1.8

7989

1163

1181

2.87

2.92

1.8

7989

1163

1181

2.94

2.98

7770

1199

1211

2.96

2.99

7770

1199

1211

3.03

3.06

2.2

7460

1237

1239

3.05

3.06

2.2

7460

1237

1239

3.12

3.13

0.2

10268

963

902

2.58

2.41

0.2

10268

963

902

2.58

2.05

0.4

9996

993

935

2.66

2.50

0.4

9996

993

935

2.66

2.12

0.6

9769

1025

957

2.74

2.56

0.6

9769

1025

957

2.74

2.17

0.8

9604

1055

997

2.82

2.67

0.8

9604

1055

997

2.82

2.26

9456

1077

1042

2.88

2.79

9456

1077

1042

2.88

2.37

1.2

9235

1106

1084

2.96

2.90

T10

1.2

9235

1106

1084

2.96

2.46

1.4

8983

1132

1133

3.03

1.4

8983

1132

1133

3.03

2.57

1.6

8736

1164

1175

3.11

3.14

1.6

8736

1164

1175

3.11

2.67

1.8

8496

1197

1204

3.20

3.22

1.8

8496

1197

1204

3.20

2.73

8288

1232

1233

3.29

3.30

8288

1232

1233

3.29

2.80

2.2

8001

1267

1259

3.39

3.37

2.2

8001

1267

1259

3.39

2.86

NOTES: High static airflow requires installation of high static kit. Air flow tables represent dry coil with filters installed; SCFM correction factor for wet coil is 4%.
20

APPENDIX A BLOWER PERFORMANCE DATA DIRECT DRIVE – HIGH STATIC

DFC3003D High Static

Speed Tap

Static

Airflow

RPM 1

RPM 2

BHP 1

BHP 2

Speed Tap

Static

Airflow

RPM 1

RPM 2

BHP 1

BHP 2

0.2

7629

701

674

1.07

1.03

0.2

10268

963

902

2.58

2.41

0.4

7314

746

725

1.14

1.11

0.4

9996

993

935

2.66

2.50

0.6

6969

789

777

1.21

1.19

0.6

9769

1025

957

2.74

2.56

0.8

6701

833

829

1.28

1.27

0.8

9604

1055

997

2.82

2.67

6380

882

892

1.35

1.37

9456

1077

1042

2.88

2.79

1.2

6049

919

939

1.41

1.44

1.2

9235

1106

1084

2.96

2.90

1.4

5706

956

994

1.46

1.52

1.4

8983

1132

1133

3.03

1.6

5285

1010

1035

1.55

1.58

1.6

8736

1164

1175

3.11

3.14

1.8

4952

1055

1066

1.62

1.63

1.8

8496

1197

1204

3.20

3.22

4673

1094

1098

1.68

8288

1232

1233

3.29

3.30

2.2

4339

1128

1134

1.73

1.74

2.2

8001

1267

1259

3.39

3.37

0.2

7900

719

690

1.17

1.12

0.2

10626

1022

955

2.95

2.75

0.4

7588

763

739

1.24

1.20

0.4

10361

1049

984

3.03

2.84

0.6

7253

805

787

1.31

1.28

0.6

10156

1080

1004

3.11

2.90

0.8

6999

848

839

1.38

1.37

0.8

9995

1107

1040

3.19

3.00

6706

893

902

1.45

1.47

9842

1127

1079

3.25

3.11

1.2

6386

929

949

1.51

1.55

1.2

9638

1155

1117

3.33

3.22

1.4

6051

966

1005

1.57

1.64

1.4

9402

1179

1160

3.40

3.35

1.6

5649

1018

1048

1.66

1.71

1.6

9176

1207

1199

3.48

3.46

1.8

5322

1063

1079

1.73

1.76

1.8

8958

1236

1227

3.57

3.54

5050

1102

1111

1.79

1.81

8760

1269

1255

3.66

3.62

2.2

4712

1137

1146

1.85

1.87

2.2

8502

1302

1280

3.76

3.69

0.2

9468

859

811

1.95

1.84

0.2

10979

1092

1017

3.41

3.17

0.4

9181

894

850

2.03

1.93

0.4

10723

1116

1042

3.48

3.25

0.6

8911

930

878

2.11

1.99

0.6

10544

1144

1062

3.57

3.31

0.8

8724

966

925

2.19

2.10

0.8

10382

1168

1093

3.65

3.41

8554

992

980

2.25

2.22

10209

1190

1123

3.71

3.51

1.2

8298

1025

1027

2.33

1.2

10023

1216

1155

3.79

3.60

1.4

8015

1054

1082

2.39

2.45

1.4

9804

1237

1191

3.86

3.72

1.6

7718

1094

1128

2.48

2.56

1.6

9598

1261

1225

3.93

3.82

1.8

7441

1133

1158

2.57

2.63

1.8

9406

1285

1252

4.01

3.91

7210

1171

1189

2.66

2.70

9218

1314

1278

4.10

3.99

2.2

6884

1209

1218

2.74

2.76

2.2

9000

1344

1301

4.19

4.06

0.2

9881

909

854

2.24

2.11

0.2

11348

1185

1101

4.05

3.76

0.4

9602

941

890

2.32

2.20

0.4

11101

1206

1120

4.11

3.82

0.6

9353

976

915

2.41

2.26

0.6

10956

1230

1142

4.20

3.90

0.8

9179

1008

959

2.49

2.37

0.8

10785

1250

1165

4.27

3.97

9025

1032

1009

2.55

2.49

10567

1275

1183

4.35

4.04

1.2

8787

1063

1055

2.62

2.60

1.2

10402

1298

1205

4.43

4.11

1.4

8519

1090

1107

2.69

2.73

1.4

10203

1317

1230

4.49

4.20

1.6

8248

1127

1151

2.78

2.84

1.6

10015

1335

1257

4.56

4.29

1.8

7989

1163

1181

2.87

2.92

1.8

9858

1353

1281

4.62

4.37

7770

1199

1211

2.96

2.99

9682

1376

1305

4.70

4.45

2.2

7460

1237

1239

3.05

3.06

2.2

9524

1400

1326

4.78

4.52

0.2

10259

962

901

2.57

2.41

0.2

11679

1301

1205

4.88

4.52

0.4

9987

992

934

2.65

2.49

0.4

11444

1317

1219

4.94

4.57

0.6

9759

1024

956

2.73

2.55

0.6

11337

1338

1246

5.02

4.67

0.8

9594

1054

996

2.81

2.66

0.8

11145

1353

1257

5.07

4.71

9446

1075

1041

2.87

2.78

10847

1386

1260

5.20

4.72

1.2

9224

1105

1084

2.95

2.89

T10

1.2

10703

1405

1267

5.27

4.75

1.4

8972

1131

1132

3.02

1.4

10526

1421

1277

5.33

4.79

1.6

8724

1163

1175

3.11

3.14

1.6

10353

1432

1291

5.37

4.84

1.8

8484

1196

1203

3.19

3.21

1.8

10238

1441

1313

5.40

4.93

8276

1231

1233

3.29

10074

1457

1333

5.47

5.00

2.2

7988

1267

1259

3.38

3.36

2.2

10002

1473

1353

5.52

5.07

NOTES: High static airflow requires installation of high static kit. Air flow tables represent dry coil with filters installed; SCFM correction factor for wet coil is 4%.
21

APPENDIX A BLOWER PERFORMANCE DATA

MODELS: DFG1803WL, DFG1804WL, DFG1807WL STANDARD STATIC TO 3.5HP (0.2 ~1.2 ESP)

CFM

RPM1

RPM2

0.2 DDC%

BHP1

BHP2

RPM1

3600

523

453

0.52

0.44

601

3900 545

472

0.50

0.42

621

4200

568

491

0.49

0.42

642

4500 592

510

0.49

0.42

662

4800

615

529

0.52

0.45

683

5100

639

549

0.56

0.48

705

5400

663

569

0.62

0.54

727

5700

688

589

0.70

0.60

750

6000

713

609

0.80

0.68

773

6300

738

630

0.91

0.78

796

6600

763

651

1.04

0.89

820

CFM

RPM1

RPM2

0.8 DDC%

BHP1

BHP2 RPM1

3600

754

733

0.63

0.61

820

3900

767

739

0.65

0.63

831

4200

781

746

0.70

0.67

842

4500

797

753

0.76

0.72

855

4800 812

762

0.84

0.79

868

5100 829

771

0.93

0.87

882

5400

847

782

1.03

0.96

898

5700

865

793

1.16

1.06

914

6000

884

805

1.30

1.18

932

6300

904

817

1.45

1.31

950

6600

924

831

1.62

1.46

969

RPM2 577 586 597 608 620 633 647 661 677 693 710
RPM2 789 795 803 811 819 828 838 848 859 871 883

0.4 DDC%
30 30 31 32 34 35 37 39 41 44 46 1 DDC% 33 34 36 37 39 41 43 46 48 51 54

BHP1 0.52 0.52 0.53 0.55 0.60 0.66 0.74 0.83 0.94 1.07 1.22
BHP1 0.70 0.75 0.81 0.88 0.97 1.08 1.20 1.33 1.48 1.65 1.83

BHP2 0.49 0.48 0.49 0.51 0.54 0.59 0.65 0.73 0.83 0.94 1.06
BHP2 0.68 0.73 0.78 0.85 0.93 1.02 1.12 1.24 1.37 1.51 1.66

RPM1 679 695 713 730 749 768 788 808 829 851 873
RPM1 876 886 897 908 921 935 949 965 981 999 1017

RPM2 646 655 664 674 686 697 710 724 738 753 770
RPM2 850
859 868 878 887 897 907 916 926 936 946

0.6 DDC%
31 31 32 34 35 37 39 41 43 46 49 1.2 DDC% 35 36 38 39 41 44 46 48 51 54 57

BHP1 0.56 0.57 0.60 0.64 0.70 0.78 0.87 0.98 1.11 1.25 1.41
BHP1 0.80 0.87 0.94 1.04 1.14 1.26 1.39 1.54 1.70 1.87 2.06

BHP2 0.53 0.53 0.56 0.59 0.64 0.71 0.79 0.88 0.99 1.11 1.25
BHP2 0.80 0.86 0.93 1.02 1.11 1.22 1.33 1.46 1.60 1.75 1.90

MODELS: DFG1803WL, DFG1804WL, DFG1807WL HIGH STATIC TO 5HP (0.8 ~2.2 ESP)

CFM

0.8 RPM1 RPM2 DDC%

BHP1

1 BHP2 RPM1 RPM2 DDC%

BHP1

1.2 BHP2 RPM1 RPM2 DDC%

BHP1

BHP2

1.4 RPM1 RPM2 DDC%

BHP1

BHP2

4200 683 665 13 -0.04 0.01 762 747 16 0.11 0.14 850 845 20 0.32 0.34 928 929 23 0.51 0.53

4500 718 695 15 0.06 0.09 793 773 18 0.21 0.23 876 864 22 0.41 0.43 949 943 25 0.61 0.61

4800 753 724 18 0.17 0.19 824 799 21 0.32 0.33 901 883 24 0.52 0.52 970 958 26 0.71 0.71

5100 786 753 20 0.28 0.29 854 824 23 0.44 0.44 926 903 26 0.63 0.63 991 973 28 0.82 0.81

5400 818 781 22 0.40 0.40 883 848 25 0.57 0.56 950 921 28 0.76 0.74 1011 987 31 0.95 0.93

5700 850 808 25 0.54 0.52 911 872 28 0.71 0.68 973 940 30 0.89 0.86 1031 1002 33 1.08 1.05

6000 880 834 27 0.68 0.65 938 895 30 0.85 0.82 996 958 33 1.04 1.00 1051 1016 35 1.22 1.18

6300 909 859 30 0.83 0.78 965 918 33 1.01 0.96 1019 976 35 1.19 1.14 1070 1031 37 1.38 1.32

6600 938 884 33 0.99 0.93 990 940 35 1.17 1.11 1041 994 38 1.35 1.29 1089 1046 40 1.54 1.48

CFM

1.6 RPM1 RPM2 DDC%

BHP1

1.8 BHP2 RPM1 RPM2 DDC%

BHP1

BHP2

2 RPM1 RPM2 DDC%

BHP1

2.2 BHP2 RPM1 RPM2 DDC%

BHP1

BHP2

4200 1010 989 26 0.71 0.70 1076 1049 28 0.89 0.87 1124 1092 30 1.04 1.01 1173 1161 33 1.22 1.21

4500 1025 1002 27 0.80 0.78 1088 1060 30 0.99 0.96 1134 1103 32 1.13 1.10 1183 1167 34 1.32 1.31

4800 1041 1015 29 0.90 0.88 1100 1072 32 1.09 1.06 1145 1113 34 1.24 1.21 1193 1173 36 1.43 1.41

5100 1056 1028 31 1.01 0.99 1113 1083 33 1.20 1.17 1157 1124 35 1.36 1.32 1203 1180 38 1.55 1.52

5400 1072 1041 33 1.13 1.10 1125 1094 35 1.33 1.29 1168 1135 37 1.49 1.45 1213 1187 40 1.68 1.65

5700 1088 1054 35 1.27 1.23 1138 1106 37 1.46 1.42 1180 1146 39 1.63 1.58 1224 1194 42 1.82 1.78

6000 1103 1067 37 1.41 1.36 1151 1117 40 1.61 1.56 1192 1156 41 1.78 1.73 1235 1201 44 1.98 1.93

6300 1119 1080 40 1.56 1.51 1164 1128 42 1.76 1.71 1205 1167 44 1.94 1.88 1246 1209 46 2.14 2.08

6600 1135 1093 42 1.73 1.66 1178 1139 44 1.93 1.87 1217 1178 46 2.11 2.04 1257 1217 48 2.32 2.25

APPENDIX A BLOWER PERFORMANCE DATA

MODELS: DFG1803DM, DFG1803DH, DFG1804DM, DFG1804DH, DFG1807DM, DFG1807DH STANDARD STATIC TO 3.5HP (0.2 ~1.2 ESP)

CFM

RPM1

RPM2

0.2 DDC%

BHP1

3600

523

453

0.52

3900 545

472

0.50

4200

568

491

0.49

4500 592

510

0.49

4800

615

529

0.52

5100

639

549

0.56

5400

663

569

0.62

5700

688

589

0.70

6000

713

609

0.80

6300

738

630

0.91

6600

763

651

1.04

CFM

RPM1

RPM2

0.8 DDC%

BHP1

3600

754

733

0.63

3900

767

739

0.65

4200

781

746

0.70

4500

797

753

0.76

4800 812

762

0.84

5100 829

771

0.93

5400

847

782

1.03

5700

865

793

1.16

6000

884

805

1.30

6300

904

817

1.45

6600

924

831

1.62

BHP2 0.44 0.42 0.42 0.42 0.45 0.48 0.54 0.60 0.68 0.78 0.89
BHP2 0.61 0.63 0.67 0.72 0.79 0.87 0.96 1.06 1.18 1.31 1.46

RPM1 601 621 642 662 683 705 727 750 773 796 820
RPM1 820 831 842 855 868 882 898 914 932 950 969

RPM2 577 586 597 608 620 633 647 661 677 693 710
RPM2 789 795 803 811 819 828 838 848 859 871 883

0.4 DDC%
30 30 31 32 34 35 37 39 41 44 46
1 DDC%
33 34 36 37 39 41 43 46 48 51 54

BHP1 0.52 0.52 0.53 0.55 0.60 0.66 0.74 0.83 0.94 1.07 1.22
BHP1 0.70 0.75 0.81 0.88 0.97 1.08 1.20 1.33 1.48 1.65 1.83

BHP2 0.49 0.48 0.49 0.51 0.54 0.59 0.65 0.73 0.83 0.94 1.06
BHP2 0.68 0.73 0.78 0.85 0.93 1.02 1.12 1.24 1.37 1.51 1.66

RPM1 679 695 713 730 749 768 788 808 829 851 873
RPM1 876 886 897 908 921 935 949 965 981 999 1017

RPM2 646 655 664 674 686 697 710 724 738 753 770
RPM2 850
859 868 878 887 897 907 916 926 936 946

0.6 DDC%
31 31 32 34 35 37 39 41 43 46 49
1.2 DDC%
35 36 38 39 41 44 46 48 51 54 57

BHP1 0.56 0.57 0.60 0.64 0.70 0.78 0.87 0.98 1.11 1.25 1.41
BHP1 0.80 0.87 0.94 1.04 1.14 1.26 1.39 1.54 1.70 1.87 2.06

BHP2 0.53 0.53 0.56 0.59 0.64 0.71 0.79 0.88 0.99 1.11 1.25
BHP2 0.80 0.86 0.93 1.02 1.11 1.22 1.33 1.46 1.60 1.75 1.90

MODELS: DFG1803WM, DFG1803WH, DFG1804WM, DFG1804WH, DFG1807WM, DFG1807WH HIGH STATIC TO 5HP (0.8 ~2.2 ESP)

CFM

RPM1

0.8 RPM2 DDC%

BHP1

BHP2

RPM1

1 RPM2 DDC%

BHP1

BHP2

1.2 RPM1 RPM2 DDC%