Toshiba Rbm-a101upva-e Nrf Dx Valve Kit Installation Guide (+ PDF)

VRF DX COIL INTERFACE is the product that is used with
connecting the AHU prepared on-site to the TOSHIBA VRF outdoor
unit. DX COIL stands for Direct expansion coil (heat exchanger) and
AHU stands for Air Handling Unit. For system design and cautions,
refer to the Dx-coil controller Installation Manual.

3. Accessories

No.	Item	Q’ty	Shape
1	Sensor holder (TC1) (O.D. 6.35 mm, Length: 26 mm)	1	–
2	Sensor clip (TC1)	1	–
3	Sensor holder (TC2, TCJ) (O.D. 8 mm, Length: 26 mm)	2	–
4	Sensor clip (TC2, TCJ)	2	–
5	Heat insulator (O.D. 40 mm, Length: 210 mm)	2	–
6	Cable tie (Length: 152 mm)	1	–

Note: There are no accessories for the sensor holders for the TA
sensor and TF sensor.

4. Installation

External dimensions and Installation space: Be
sure to install the valve kit indoors. Failure to do so may cause
frost formation, rust, or malfunction.

Refer to the product manual for detailed instructions on
installation.

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VRF DX VALVE KIT
Installation Manual
MODEL NAME
RBM-A101UPVA-E RBM-A201UPVA-E

R410A
For commercial use

English

Only the installation method of the Dx-valve kit is specified in this manual. For the cautions of the system or wiring, be sure to refer to the Dx-coil controller installation Manual. · To use it with DX-coil controller (TCB-IFDMX01UP-E or TCB-IFDMR01UP-E). · For installation of the air handling unit, follow the Installation Manual attached to the air handling unit. (Field supply) · For installation of the outdoor unit, follow the Installation Manual attached to the outdoor unit. · TOSHIBA/Carrier does not take any responsibility on the local design.
Contents
1. Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-EN

1. Precautions
The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.
WARNING
General · Do not modify the products. Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury. · Before starting to install the air conditioner, read through the Installation Manual carefully, and follow its instructions to install the air conditioner. · Only a qualified installer or service person is allowed to do installation work. Inappropriate installation may result in water leakage, electric shock or fire. · Do not use any refrigerant different from the one specified for complement or replacement. Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure or explosion of the product or an injury to your body. · Before opening the electrical control box cover of the air handling unit or service panel of the outdoor unit, set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts. Only a qualified installer or qualified service person is allowed to remove the electrical control box cover of the air handling unit or service panel of the outdoor unit and do the work required. · Before carrying out the installation, maintenance, repair or removal work, set the circuit breaker to the OFF position. Otherwise, electric shocks may result. · Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair or removal work is being carried out. There is a danger of electric shocks if the circuit breaker is set to ON by mistake. · Only a qualified installer or qualified service person is allowed to undertake work at heights using a stand of 50 cm or more. · Wear protective gloves and safety work clothing during installation, servicing and removal. · When work is performed at heights, use a ladder which complies with the ISO 14122 standard, and follow the procedure in the ladder’s instructions. Also wear a helmet for use in industry as protective gear to undertake the work. · Before working at heights, put a sign in place so that no-one will approach the work location, before proceeding with the work. Parts and other objects may fall from above, possibly injuring a person below. While carrying out the work, wear a helmet for protection from falling objects. · The refrigerant used by this air conditioner is the R410A. · The air conditioner must be transported in stable condition. If any part of the product is broken, contact the dealer. · Do not move or repair any unit by yourself. You may get electric shock when removing the cover and main unit. · This appliance is intended to be used by expert or trained users in shops, in light industry, or for commercial use by lay persons.
Refrigerant piping · Install the refrigerant pipe securely during the installation work before operating the air conditioner. If the compressor is operated with the valve open and without refrigerant pipe, the compressor sucks air and the refrigeration cycles is over pressurized, which may cause a injury. · After the installation work, confirm that refrigerant gas does not leak. If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas may be generated. · When the air conditioner has been installed or relocated, follow the instructions in the Installation Manual and purge the air completely so that no gases other than the refrigerant will be mixed in the refrigerating cycle. Failure to purge the air completely may cause the air conditioner to malfunction. · Nitrogen gas must be used for the airtight test. · The charge hose must be connected in such a way that it is not slack. · Due to the pressure of R410A is higher than that of other refrigerant (ex. R22), be sure to use the pipe specific for R410A and use the special tool for the pipe processing.

2-EN

Selection of installation place
Avoid installation in the following kinds of locations. · Dx-coil interface is recommended to be installed indoors. Install it in a location where there is no rain, wind, and direct sunlight. · Do not install in locations where there is a machine generating high frequency. Failure to do so may cause a wrong operation or an abnormality. · Do not install in locations with atmospheres with mist of oil (including machine oil) or dense vapor, or locations containing salt such as the coast area, or locations with acidic or alkaline atmospheres, or locations where sulfurizing gas are generated such as areas with hot springs. Use in inappropriate locations result in malfunctions. · Do not put any vessel contains the water in the vicinity of the indoor unit (including Dx-coil controller, Dx-valve kit). If the water spills and enters into the inside of the unit, the electric insulation deteriorates and may result in an electric shock. · Make sure that the air filter is attached on the indoor unit. If it is not, the dust clogs in the heat exchanger etc. in the air conditioner and may result in water leakage or defrosting. · Separate the television or radio from the air conditioner or remote controller at least 1 m. Failure to do so may cause the disturbance of the image, or the noise. · Do not use for special-purpose (Foods, animals and plants, precision machine, storage of the artwork etc.). · Do not use in locations where there is anything that would be compromised by wetness. The mist or water dew drop may result in damage. · Do not install in locations where organic solvents are being used. · Do not install in locations near doors or windows where the air conditioner may come into contact with high humidity outside air. Condensation may occur as a result. · Do not install in locations where special sprays are used frequently. The location has an impact on the insulation of the equipment and may cause the ignition. · Do not install in locations with high-humidity atmosphere. Doing so may cause condensation of the equipment, splashing of water from the air outlet side of indoor unit. Ex. 1) Installation to inside of the ceiling where is high humidity. 2) Installation to inside of the ceiling used for the path of the fresh air intake. 3) Installation to a kitchen. · In the above cases, additionally attach the heat insulator (grass wool etc.) to all positions of the air conditioner, which come to contact with the high-humidity atmosphere. * The guideline of the high-humidity condition is “dew-point temperature: 23°C or higher”, however, the decision should be made according to the trial operation conducted in each installation location. · Install in locations that ensure the sufficient space needed for the service so that the equipment does not come to contact with the surface of the wall or the ceiling. · Fix the Dx-coil controller, Dx-valve kit to the stable surface. Failure to do so may cause the vibration or the noise. · Do not install the Dx-coil controller, Dx-valve kit to the locations where there is a temperature difference with the ambient temperature. Failure to do so may result in condensation, rust, or malfunction. Ex. The sheet metal side surface of the AHU outlet. · Install the Dx-valve kit to where the noise is no problem due to the Dx-valve kit makes the refrigerant noise. Also, it may make the refrigerant noise when other indoor units are operating even if the AHU is stopping like defrosting. · Do not install in locations with the high temperature or the high-humidity atmosphere of 52°C or more / RH 80% or more. Also, do not install it in a place where dew condensation occurs inside the Dx-valve kit. · When installing the Dx-valve kit and the Dx-coil controller into the Air handling unit, do not install it where it is exposed to the cooled air of the secondary side of the heat exchanger. · Do not install in locations where iron or other metal dust is present. If iron or other metal dust adheres to or collects on the interior of the Dx-valve kit, it may spontaneously combusted and start a fire.

3-EN

2. Overview
VRF DX COIL INTERFACE is the product that is used with connecting the AHU prepared on-site to the TOSHIBA VRF outdoor unit. *1. DX COIL: Abbreviation of the Direct expansion coil (heat exchanger). *2. AHU: Abbreviation of the Air Handling Unit For the system design and the cautions, refer to the Dx-coil controller Installation Manual.
Example of the system configuration
TA type : Enables to connect 3rd party indoor unit or air handing unit as one of VRF indoor unit.
(Return air temperature control by remote controller setting) Main application target Room temperature conditioning
Dx-coil controller

Outdoor unit

Remote controller

AHU

Valve kit

TA TCJ
TC2 TC1

TF type : The discharge temperature is set by the remote controller to control the capacity.
Main application target Ventilation Dx-coil controller

Outdoor unit

Remote controller

AHU

Valve kit

TCJ

TC2 TC1

4-EN

DDC type

: Direct capacity control of Toshiba Carrier VRF outdoor unit by analogue input (0 – 10 V). Mainly discharge air temperature control linked AHU system.

Dx-coil controller

Locally procured DDC

Outdoor unit

AHU

Valve kit

TCJ

TC2 TC1

3. Accessories

No.

Item

Q’ty

Sensor holder (TC1) (O.D. 6.35 mm, Length: 26 mm)

2 Sensor clip (TC1)

Sensor holder (TC2, TCJ) (O.D. 8 mm, Length: 26 mm)

4 Sensor clip (TC2, TCJ)

Shape

Heat insulator (O.D. 40 mm, Length: 210 mm)

Cable tie (Length: 152 mm)

There are no accessories for the sensor holders for the TA sensor and TF sensor.

5-EN

4. Installation

External dimensions and Installation space
Be sure to install the valve kit in the indoor. Failure to do so may cause the frost formation, rust, or malfunction. (Unit: mm)

360

209

Connection cable

179

(Factory wiring)

7 0

4-Ø 6.0 Mounting hole PMV motor

240

Terminal block (5p)

Connection cable (Local wiring)
When fixing the connection cable with a cable tie, allow a margin for the connection cable on the terminal block side.
Cable tie (Accessories No.6)
Pass the connection cable through the wire clamp and fix it with a cable tie.
Wire clamp

9 9

4 5 4 9
300 or more
9 9
30 or more

Refrigerant pipe connection port (Liquid pipe / Outdoor unit side)
186 138

Refrigerant pipe connection port (Liquid pipe / Air Handing unit side)

· Installation space and maintenance space.

Upper side when installed.

Wall

Note) This product is designed for the indoor installation.

Model RBM-A101UPVA-E RBM-A201UPVA-E

A (Pipe) Ø12.7 Ø15.88

Wall
30 or more 30 or more

500 or more

Floor

6-EN

Installation Dx-valve kit

By the refrigerant circuit diagram, braze the sensor holder of TC1, TC2, TCJ of the valve kit and the accessory. Refer to the below table for the pipe diameter and the pipe length to use.

Item Main pipe equivalent length Total piping length (real length) Furthest equivalent pipe length L (real length) Furthest equivalent pipe length from the 1st branch

Furthest equivalent pipe length between outdoor unit

Max, real length of pipes connected to indoor units

Maximum equivalent between branching section

Outdoor unit – Indoor unit (Upper outdoor unit) H1

Max.

Outdoor unit – Indoor unit

H2 > 3 m

Height (Lower outdoor unit) H1

H2 3 m

Difference Indoor unit – Indoor unit (Upper outdoor unit) H2

Indoor unit – Indoor unit (Lower outdoor unit) H2

TA type

TF, DDC type

Same as piping length restriction of outdoor unit

200 m

120 m (100 m)

130 m (120 m)

100 m

40 m

–

Same as piping length restriction of outdoor unit

–

20 m

–

30 m

–

40 m or the outdoor unit spec. Whichever is shorter
of outdoor unit.

40 m
–

Dx-valve kit and connection of the pipe · Be sure to cool the strainer and PMV valve body using a wet cloth so that the body temperature does not exceed 120°C
while brazing. · For the connection pipe, it may vibrate during the defrosting operation. Carry out the installation work so that the
connection pipe does not break after a long-term use. Sensor holders · To ensure reliable operation, all Sensor holders must be fitted by brazing. · Be careful of that the brazing material does not enter into the sensor holder when attaching the TC1, TC2 and TCJ
sensor holder. TC1 sensor · Install it in the collecting part of the gas header. TC2 sensor · Install it in the between the liquid pipe distributor and the PMV.
(TC2 sensor is attached to the refrigerant cycle of AHU.) TCJ sensor · Install it in the pass where the temperature of the capillary tube is the lowest. · Keep a distance of 50 mm ± 25 mm from the end plate. TA, TF sensor · Install the TA, TF sensor where the better of air flow. · The TA sensor must be located in the Return Air position, prior to mixing with any fresh air. · Install the TF sensor in a place where the discharge air temperature is uniform.

If the TC1, TC2, or TCJ sensor are easy to be subjected to the surrounding thermal effect, cover them with the heat insulator material, and fix them with the fixing band.
If the lead wires of various sensors are left over, protect them from the effects of external force, heat, and water, and fix them with a fixing band. If the lead wires of various sensors do not reach, use the Optional Sensor (10 m cable) TCB-IFDES1001P-E.

Gas pipe

45°

Sensor holder

TC1 sensor holder

Braze the TC1 sensor on the location of the lower side 45° to detect the stable temperature.

Taping Taping

Valve kit

Heat insulator
Attachment figure
After brazing the pipe, wrap the attached heat insulator and fix it with a tape.

7-EN

TC1, TC2 and TCJ sensor position on DX COIL

Gas pipe

AHU

PMV: Pulse Motor Valve

Dx-valve kit

Strainer

Brazing Heat insulator Liquid pipe

Capillary Tube

Max 5m
Distributor

TCJ Ø6 mm (Brazing)

DX COIL

TC2 Ø6 mm (Brazing)

50 mm ± 25 mm from the end plate

Dx-valve kit: 1 set DX COIL type: Normal

Header
TC1 Ø4 mm (Brazing)

Example TA / TF*1 sensor position

1. Fresh Air Only AHU

Fresh Air

Dx coil
TA sensor position

2. Outdoor Air (Fresh Air) mixed with Return Air

Supply Air

Fan Supply

TF sensor position

Fresh Air
Return Air

AHU
TA sensor position

Dx coil

Supply Air

Fan Supply

TF sensor position

3. Outdoor Air (Fresh Air) mixed with Return Air by Heat Recovery Exchanger

Fan Return

AHU

Exhaust Air

Return Air

Fresh Air
Heat Recovery Exchanger

Dx coil
TA sensor position

Supply Air
TF sensor position
Fan Supply

*1: TF sensor can only be used with SMMS-u and SMMS.

8-EN

Refrigerant circuit diagram
(1) Gas pipe

PMV: Pulse Motor Valve
Strainer
Brazing

Valve kit

Capillary Tube

Max 5m
Distributor

DX COIL

Heat insulator (2) Liquid pipe

(2)
Valve kit: 1 set DX COIL type: Normal

(1) Gas pipe
PMV: Pulse Motor Valve Strainer

Valve kit

Capillary Tube

Brazing Heat insulator

(3) Y-joint (A)

(2) Liquid pipe PMV: Pulse Motor Valve
Strainer

Brazing Heat insulator

(2) Liquid pipe

(2) Valve kit Y-joint (B)

DX COIL

(3)

Distributor (2)
Valve kit: 2 sets DX COIL type: Normal

Header Header

9-EN

(1) Gas pipe
PMV: Pulse Motor Valve Strainer
Brazing

Valve kit

Capillary Tube

Distributor

DX COIL

Heat insulator (2) Liquid pipe

(3) Y-joint (A)

PMV: Pulse Motor Valve
Strainer

Brazing

(2) Valve kit

Capillary Tube

Distributor

DX COIL

Heat insulator
(2) Liquid pipe
PMV: Pulse Motor Valve Strainer Y-joint (A)
Brazing

(2) Valve kit

Capillary Tube

Distributor

DX COIL

Heat insulator (2)
(2) Liquid pipe
Valve kit: 3 sets DX COIL type: Interlaced, Split face

Header Y-joint (B)
Header Y-joint (B)
Header

10-EN

Piping size and Y-joint · Maximum real piping length between valve kit and Dx coil is up to 5 m.

DX COIL type
HP 8 10 12 14 ~ 18 20 22 24 ~ 26 28 ~ 34 36 ~ 42 44 ~ 52 54 56 ~ 60 62 ~ 74 76 ~ 92 94 ~

Pipe diameter

(1) Gas pipe (2) Liquid pipe (3) Liquid pipe

Outer diameter

19.1

22.2

12.7

28.6

15.9

19.1 34.9

38.1

41.3

22.2

44.5

54 25.4

DX COIL type HP 24
26 ~ 60 61.2 or more

Normal Y-joint (A, B)
RBM-BY205E RBM-BY305E RBM-BY405E

(Unit: mm)

11-EN

Electrical connection
The wiring from PMV is connected to Dx-coil controller.
Terminal: R / BL / OR / Y / W Dx-valve kit 1, Dx-valve kit 2 : Connect the cable from the PMV.
Match the color of the wiring of the PMV side and the controller side.

Color identification
W: White Y: Yellow OR: Orange BL: Blue R: Red

Dx-valve kit side
W Y OR BL R

Valve kit 1

Dx-coil controller side
W Y
OR BL R

RBM-A101UPVA-E 8, 10, 12 HP RBM-A201UPVA-E 14, 16, 18, 20 HP

Dx-valve kit side
W Y OR BL R
Dx-valve kit side
W Y OR BL R

Valve kit 2

Valve kit 1

Dx-coil controller side W Y OR BL R
W Y OR BL R

RBM-A101UPVA-E 24 HP (12 HP × 2)

RBM-A201UPVA-E

28 HP (14 HP × 2), 32 HP (16 HP × 2) 36 HP (18 HP × 2), 40 HP (20 HP × 2)

· For the PMV, sensor wiring, do not bundle it with the motor wiring. The wrong operation may result in. · The PMV cable cannot be extended, it is supplied at the maximum permissible length of 5 m.

12-EN

1134580001