FRIEDRICH RT7 Digital Remote Wall Thermostat Installation Guide

FRIEDRICH RT7 Digital Remote Wall Thermostat Installation Guide

The Friedrich RT7 is a nonprogrammable electronic thermostat, which can be used with the following heating/cooling applications:

Single Stage Heat – Cool PTAC Units
Singe Stage Heat Pump PTAC Units with or without Electric Heat

Contents hide

1 Parts Diagram

2 Specifications

3 Safety Information

4 Included in Package

5 Installing the Thermostat

6 WIRING DIAGRAM: Heat Pump

7 WIRING DIAGRAM: Heat – Cool

8 INSTALLER SETTINGS

9 NORMAL OPERATION

10 Documents / Resources

11 Related Posts

Parts Diagram

Specifications

Input Voltage: 19 to 30 VAC
Output Rating: Max. 1.5A per terminal (3A total)
Temperature Control: 45°F to 90°F (7°C to 32°C)
Temperature Accuracy: ± 1°F (± 0.5°C)

Safety Information

This thermostat is for LOW voltage applications only.
Turn OFF electricity to all heating and cooling components.
All wiring must conform to applicable local and national building and electrical codes and ordinances.

Included in Package

Thermostat
J-Box mounting plate/ decorative trim plate
J-box mounting screws
Dry wall anchors and mounting screws
Wiring labels
GL to GH Jumper wire

Installing the Thermostat

If painting or construction is still ongoing, cover the thermostat completely or wait until work is complete before mounting thermostat.
Mount the thermostat on an inside wall about five feet above the floor in an area that has good circulation but is not directly affected by a vent or duct.
Ensure power is switched OFF at the PTAC unit

Mounting directly on the wall

Use a flat head screw driver to separate the front and back housing of the thermostat
If new mounting holes are needed, mark the placement of the new mounting holes through the thermostat base. Using a 3/16″ drill bit, drill the holes you have marked and insert the supplied wall anchors.
Feed the wires through the hole in the back housing of the thermostat and then screw the back housing to the wall

Mounting directly on wall with trim plate

If new mounting holes are needed, mark the placement of the new horizontal mounting holes through the trim plate base. Using a 3/16″ drill bit, drill the holes you have marked and insert the supplied wall anchors.
Feed the wires through the hole in the trim plate and screw the trim plate to the wall
Use a flat head screw driver to separate the front and back housing of the thermostat
Feed the wires through the back housing of the thermostat and then snap the back housing to the trim plate
Your thermostat base should now be securely fixed to the wall

Mounting on Junction Box

Install junction box
Feed the wires through the hole in the trim plate and hang the trim plate on the top screw
Insert mounting screw into top of junction box until there is approximately 1/8″ gap between the screw head and the wall
Use a flat head screw driver to separate the front and back housing of the thermostat
Feed the wires through the back housing of the thermostat and then snap the back housing to the trim plate
Your thermostat base should now be securely fixed to the wall
Using the WIRING DIAGRAMS section, wire each terminal on the thermostat base. Ensure that the bare end is fully seated into the connector, then tighten securely.
Pull gently on wires to ensure they are secure.
Important: For Heat Pump systems additional configuration steps are necessary. View the WIRING DIAGRAMS: Heat Pump section for details.
Return the thermostat front cabinet to its base by hooking the top first and then gently swinging the bottom of the thermostat into place.
Restore power back to heating and cooling components and thermostat.
See INSTALLER SETTINGS MENU section, to adjust the required settings needed for each system type.

WIRING DIAGRAM: Heat Pump

Note 1: Make the following jumper position changes and Installer Settings for Heat Pump units

System Type	Changeover valve type	Required action
Heat Pump	B	1. Move yellow PCB jumper to HP position 2. Set Installer Settings Menu #06 to HP
	O	1. Move yellow PCB jumper to HP position 2. Move blue PCB jumper to O position 3. Set Installer Settings Menu #06 to HP

Note 2: The “W2” terminal is used to call for Electric/Auxiliary heat. If your Heat Pump PTAC does not have Electric heat, then the “W2” terminal should not be used and Installer Settings menu 10 (Aux. Stage Offset) should be set to “OFF”.
Note 3: For PTAC units with only one fan speed (single “G” fan wire), add a jumper wire to bridge together “GH” and “GL”. Connect your fan wire to either terminal after jumper wire has been added.

WIRING DIAGRAM: Heat – Cool

Note 1: If connecting to a Cool only PTAC unit, the W1 wire terminals will not be used.
Note 2: For PTAC units with only one fan speed (single “G” fan wire), add a jumper wire to bridge together “GH” and “GL”. Connect your fan wire to either terminal after jumper wire has been added.

INSTALLER SETTINGS

HOW TO ENTER

Place the Mode Slide Switch to OFF mode
Hold UP for 5 seconds to enter the installer setting

HOW TO NAVIGATE

Press UP or DOWN to change the setting value
Hold UP or DOWN for 2 seconds to save the setting value and proceed to the next setting option

HOW TO EXIT

When finished, leave thermostat without pressing any buttons for 60 seconds or change Mode Slide Switch position
Note: You must hold UP or DOWN for 2 seconds to save setting value

Menu Number	Function Description	Selectable Options	Default setting
1	Temperature Scale	F: Fahrenheit C: Celsius	F
2	Temperature Calibration	+/- 5.4°F	0.0°F
3	(Not Used)
4	Max Heat Set Temp	F: 60 to 90 (5°F step)	80°F
5	Min Cool Set Temp	F: 60 to 80 (5°F step)	65°F
6	System Type	H-C: Heat-Cool HP: Heat Pump	H-C
7	(Not Used)
8	(Not Used)
8	Stage 1 Temperature Control Swing	±0.25°F ±0.50°F ±1.00°F ±2.25°F	0.50°F
10	Auxiliary Stage Cut-In Offset (only used for HP system type)	OFF (No Electric / Auxiliary heat) -3.0 to -8.0°F (1°F step)	-4.0°F
11	(Not Used)
12	(Not Used)
13	(Not Used)
14	(Not Used)
15	(Not Used)
17	Always On Backlight	OFF: 10s timeout ON: always ON	OFF
18	Reset to default set temperatures after each mode change	ON: uses default temperatures after each mode change (see menu 19 and 20) OFF: Maintain last set temperature for each mode	ON
19	Default heat mode set temperature	60°F to Max Heat Set Temp	70°F
20	Default cool mode set temperature	Min Cool Set Temp to 80°F	74°F
98	Minimum off time – Compressor protection	NO: Immediate off/ on switching YES: 3-minute minimum off time enforced	NO
99	Reset	NO: no reset YES: ex-factory reset	NO

NORMAL OPERATION

THERMOSTAT SYSTEM MODE SWITCH POSITIONS:

HEAT: thermostat permits heating operation
OFF: thermostat stops all heating or cooling functions
COOL: thermostat permits cooling operation

THERMOSTAT FAN SWITCH POSITIONS:

AUTO position: fan operates in low speed mode as needed during a call for heating or cooling activation only.
LOW position: fan operates continuously in low speed. Heat/Cool will turn on/off in background as needed.
HIGH position: fan operates continuously in high speed. Heat/Cool will turn on/off in background as needed.

THERMOSTAT BUTTONS:

UP / DOWN: used for raising or lowering the target set temperature and selecting user options and settings in the display screen.
Note: to adjust the target set temperature, first ensure that the thermostat is in either HEAT or COOL mode and press either UP or DOWN until the desired target temperature is reached. Pressing UP or DOWN will have no effect when the thermostat is in OFF mode.

SETTING A KEYPAD / FRONT PANEL LOCKOUT:

While in either HEAT or COOL mode, a keypad lockout can be introduced which will prevent any temperature adjustment from being made by the user. Even while locked, any button press will illuminate the display backlight.
To activate (and deactivate) the keypad lockout, set Mode Slide Switch to either HEAT or COOL, hold UP for 5 seconds . When the keypad is locked, a padlock will appear in the lower left corner of the display