Accessory RT6P Manual (2019)

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RT6P

Electronic Thermostat

Installation, Operation & Application Guide

Parts Diagram

Up button

Down button

YO/BGHGLCR W

RESET

CONFIG

Speciﬁcations

Electrical rating:

• 24 VAC (18-30 VAC)

• 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 conﬁgurations: 2-stage heat, 1-stage cool, heat pump, electric

Timing: Anti-short Cycle: 4 minutes (bypass anti-short cycle delay by returning to OFF mode

for 5 seconds)

Backlight Operation: 10 seconds

Terminations: R, C, GL, GH, O/B, Y, W

Package Contents/Tools Required

Package includes: RT6P thermostat on base, thermostat cover, wiring labels, screws and wall

anchors, Installation, Operation and Application Guide

Tools required for installation: Drill with 3/16” bit, hammer, screwdriver

Important Safety Information

WARNING!

• This thermostat is for 24 VAC applications only; do not use on voltages over 30 VAC

• 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

To Remove Existing Thermostat

ELECTRICAL SHOCK HAZARD

– Turn off power at the main service panel by removing

the 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.

To Install Thermostat

ELECTRICAL SHOCK HAZARD

– Turn off power at the main service panel by removing

the 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 & ordinances.

Note: Mount the thermostat about ﬁve feet above the ﬂoor. 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.

2. To remove cover, pull gently at the seam at the top.

3. Put thermostat base against the wall where you plan to mount it (Be sure wires will feed through

the wire opening in the base of the thermostat).

4. Mark the placement of the mounting holes.

5. Set thermostat base and cover away from working area.

6. Using a 3/16” drill bit, drill holes in the places you have marked for mounting.

7. Use a hammer to tap supplied anchors in mounting holes.

8. Align thermostat base with mounting holes and feed the control wires through slit in thermal

intrusion barrier and into wire opening.

9. Use supplied screws to mount thermostat base to wall.

10. Insert stripped, labeled wires in matching wire terminals.

CAUTION!: Be sure exposed portion of wires does not touch other wires.

11. Gently tug wire to be sure of proper connection. Double check that each wire is connected to the

proper terminal.

12. Turn on power to the system at the main service panel.

13. Conﬁgure thermostat to match the type of system you have.

14. Replace cover on thermostat by snapping it in place.

15. Test thermostat operation as described in “Testing the Thermostat”.

Terminal Designator Descriptions

R – 24 VAC hot

C – 24 VAC common

O/B – Conﬁgurable

O – Cool active reversing valve

B – Heat active reversing valve

Y – 1st stage cool, 1st stage heat for heat pumps

W – 1st stage heat for non-heat pump systems, auxiliary heat for HP systems

GL – Low fan

GH – High fan

RT6P Output Chart

Conﬁguration Mode Settings

The setup screens for Conﬁguration Mode are as follows:

5. Staged Off Outputs (For HP 0 and HP B only)

Select whether the outputs for heating and cooling are staged off

independently or are satisﬁed simultaneously.

1 = outputs staged off independently

0 = outputs off simultaneously

Press the up or down button to set.

Press the right button to advance to the next screen.

8. Maximum Heat Setpoint (45°F to 90°F) (7°C to 32°C)

Adjust to control the maximum heat set temperature allowed.

Press the up or down button to select.

Press the right button to advance to the next screen.

9. Minimum Cool Setpoint (45°F to 90°F) (7°C to 32°C)

Adjust to control the minimum cool set temperature allowed.

Press the up or down button to select.

Press the right button to advance to the next screen.

10. Room Temperature Offset (+9°F to -9°F) (+4.5°C to -4.5°C)

Adjust to calibrate displayed room temperature to match actual

room temperature.

Note: When not set to 0, will display.

Press the up or down button to select.

Press the right button to advance to the next screen.

4. 2

Stage Temperature Differential (1°F to 5°F) (0.5°C to 2.5°C)

(For HP 0 and HP B only)

Set the number of degrees between when stage 1 turns on and

when stage 2 turns on.

Press the up or down button to set differential value.

Press the right button to advance to the next screen.

3. 1

Stage Temperature Differential (1°F to 5°F) (0.5°C to 2.5°C)

Set the number of degrees between your “setpoint” temperature

and your “turn on” temperature.

Press the up or down button to set differential value.

Press the right button to advance to the next screen.

2. Temperature Scale (F or C)

Choose Fahrenheit or Celsius.

Press the up or down button to select.

Press the

right

button to advance to the next screen.

Press the up or down button to select.

Press the right button to advance to the next screen.

Icon Descriptions

Button Functions

UP – Used to increase the set temperatures and to adjust

conﬁguration settings

DOWN – Used to decrease the set temperatures and to

adjust conﬁguration settings

SYS (left) – Used to change from OFF, HEAT, COOL

and HEAT/COOL modes

FAN (right) – Used to turn on and off the indoor fan

SYS (left) and FAN (right) – Used to enter and exit program operation

SYStem (left)

FAN (right)

Down button

Up button

OFF

1. Verify the RT6P is in the OFF mode.

Press the SYS (left) button until off mode displays.

2. Remove the cover of the thermostat by gently pulling near one of the

corners at the top of the thermostat.

Conﬁguration Mode

Press the up or down button to change settings within each screen.

To exit conﬁguration mode, press the CONFIG switch for 1 second.

Press the button to advance to the next screen.

Pressing the

left

button will return you to the previous screen.

Down

button

Left

button

Right

button

The conﬁguration mode is used to set the RT6P to match your heating/cooling system. The RT6P

functions with heat pump, air conditioning, or electric heat systems.

Note:

Thermostat comes conﬁgured for 1-stage heat / 1-stage cooling for use with all heat/cool and

single-stage heat pump models. For Friedrich PTHP models follow the instructions below to

conﬁgure the thermostat for two-stage heat pump operation using the ‘O’ terminal.

To conﬁgure the RT6P, perform the following steps:

3. Press the CONFIG button for 1 second while the RT6P is in OFF mode.

CONFIG

Wiring Diagrams

Heat/Cool Systems Heat pump with electric backup

7. Auxiliary Delay ON – (0-30 minutes) (For HP 0 and HP B only)

Set the delay time in minutes for auxiliary heat to be locked out

after a call for second stage. This extra savings feature is used

to temporarily lock out auxiliary heat devices, allowing just heat

pump to try to satisfy heat call.

Press the up or down button to set.

Press the right button to advance to the next screen.

• 7 Day Programmable

• Auto Changeover

• 1-Stage Heat/1-Stage Cool

Systems

• Conﬁgurable to: 2-stage heat

pump

• Large Display With Backlight

• Selectable Fahrenheit or Celsius

Mode of Operation

RT6P is a 1-stage cool/2-stage heat thermostat. It functions with air conditioning, heat pumps, or

electric heat systems. It is programmable for 7 days a week and has auto changeover capability.

The thermostat activates the heating appliance when the room temperature is below the set heat

temperature (by the differential temperature). The RT6P will stop outputting when the call for heat has

been satisﬁed. With heat pumps, the thermostat will not let the compressor come on for 4 minutes

after it turns off to protect your compressor.

When the room temperature is greater than the set cool temperature (by the differential temperature),

the cooling device is activated. The RT6P will stop outputting when the call for cooling is satisﬁed.

The thermostat will not let the compressor come on for 4 minutes after it turns off to protect your

compressor.

The RT6P has four possible operating modes: OFF, Heat, Cool and Heat/Cool mode. In off mode,

the thermostat will not turn on heating or cooling devices. In heat mode, the thermostat controls the

heating system. In the cool mode, the thermostat controls the cooling system. In the Heat/Cool mode,

the thermostat controls the heating and cooling system

The manual fan can be turned on in all operating modes using the fan button.

In program mode, the thermostat will automatically be controlled by the set program. Program mode

can function with heat mode, cool mode, or heat & cool mode. The clock display alternates with the

set temperature display for heat & cool mode.

The program schedule can be overridden by changing the set temperature (up or down button). This

puts the RT6P thermostat into a 2-hour temporary hold. After 2 hours, it will automatically return to the

program schedule.

6. Deadband (1°F to 9°F) (1°C to 5°C)

Select the minimum difference between heat set point and cool

set point when in auto changeover mode.

Press the up or down button to set.

Press the right button to advance to the next screen.

Conﬁguration 1

Cool 1

Heat 2

Heat

ELC Y, G W, G, B N/A

HP ‘O’ conﬁg Y, G, O Y, G Y, W, G

HP ‘B’ conﬁg Y, G Y, G, B Y, G, B, W

The RT6P thermostat is conﬁgurable for different systems. The conﬁguration directly affects the outputs.

Use the output chart to correctly conﬁgure and wire the thermostat to your system.

1. System – Set for heat pump, non-heat pump, reversing valve operation

System Setting Reversing Valve Setting

Heat Pump

HP ‘O’ O - Energized in Cooling

Heat Pump

HP ‘B’ B - Energized in Heating

Heat/Cool and Single-

Stage Heat Pump Only

ELC N/A

Summary of content (2 pages)

PAGE 1
RT6P Mode of Operation Wiring Diagrams RT6P is a 1-stage cool/2-stage heat thermostat. It functions with air conditioning, heat pumps, or electric heat systems. It is programmable for 7 days a week and has auto changeover capability. Electronic Thermostat In program mode, the thermostat will automatically be controlled by the set program. Program mode can function with heat mode, cool mode, or heat & cool mode. The clock display alternates with the set temperature display for heat & cool mode.
PAGE 2
Setting the Time and Day of the Week Operating Modes Programming (continued) The time and day of the week must be set for your program schedule to operate correctly. From any of the screens above, you can press the FAN (right) button to begin entering your program schedule. The days shown on the display will all be programmed simultaneously. 1. Press the SYS (left) button until you are in the OFF mode. 2.