Friedrich RT5 User Manual
RT5
Non-Programmable Electronic Thermostat
• For use with Friedrich PTAC units ONLY
• Backlit Display
• Filter Check
• Status Indicator Light
• Relay Outputs
(minimum voltage drop in thermostat)
• Two-Speed Fan
Installation, Operation & Application Guide
1 Heat/1 Cool
Manual Changeover
Battery or Hardwired
Table of Contents
Parts Diagram...............................................................................................................................................1
Specifi cations ...................................................................................................................... .........................2
Important Safety Information ........................................................................................................................ 2
Package Contents/Tools Required ...............................................................................................................2
To Remove Existing Thermostat ...................................................................................................................3
To Install Thermostat ....................................................................................................................................3
Wiring Diagrams ...........................................................................................................................................5
Confi guration Mode ...................................................................................................................................... 6
Testing the Thermostat ................................................................................................................................. 9
Mode of Operation ......................................................................................................................................10
Troubleshooting ...........................................................................................................................................11
Parts Diagram
1
Specifications
Electrical rating: • 24 VAC (18-30 VAC) • DC Power: 3.0 VDC (2 “AA” batteries included)
• 1 amp maximum per terminal • 3 amp maximum total load
Temperature control range: 45°F to 90°F (7°C to 32°C) Accuracy: ± 1°F (± 0.5°C)
System confi gurations: 1-stage heat, 1-stage cool, heat pump, electric
Timing:
Anti-short Cycle:
Backlight Operation: Battery for 5 seconds, hardwired for 10 seconds
Terminations: RC, RH, W, Y, B, O, GL, GH, C
5 minutes
Important Safety Information
warning!
• This thermostat is for 24 VAC applications only; do not use on voltages over 30 VAC
• Do not short across terminals of system control to test operation; this will damage your thermostat and void your
warranty
• All wiring must conform to local and national electrical and building codes
• Do not use air conditioning when the outdoor temperature is below 50 degrees; this can damage your A/C system
and cause personal injuries
• Use this thermostat only as described in this manual
:
Always turn off power at the main power supply before installing, cleaning, or removing
thermostat.
Package Contents/Tools Required
Package includes: RT5 thermostat on base, thermostat cover, wiring labels, screws and wall anchors, Installation,
Tools required for installation: Drill with 3/16" bit, hammer, screwdriver
2
Operation and Application Guide
To Remove Existing Thermostat
ELECTRICAL SHOCK HAZARD
fuse or switching the appropriate circuit breaker to the OFF position before removing the
existing thermostat.
1. Turn off power to the heating and cooling system by removing the fuse or switching the appropriate circuit breaker
off.
2. Remove cover of old thermostat. This should expose the wires.
3. Label the existing wires with the enclosed wire labels before removing wires.
4. After labeling wires, remove wires from wire terminals.
5. Remove existing thermostat base from wall.
6. Refer to the following section for instructions on how to install this thermostat.
– Turn off power at the main service panel by removing the
To Install Thermostat
ELECTRICAL SHOCK HAZARD
fuse or switching the appropriate circuit breaker to the OFF position before removing the
existing thermostat.
IMPORTANT: Thermostat installation must conform to local and national building and electrical codes and
ordinances.
Note: Mount the thermostat about fi ve feet above the fl oor. Do not mount the thermostat on an outside wall,
in direct sunlight, behind a door, or in an area affected by a vent or duct.
1. Turn off power to the heating and cooling system by removing the fuse or switching the appropriate circuit breaker
off.
– Turn off power at the main service panel by removing the
3
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