WHITE-RODGERS 1F95-1277 Universal Thermostat Owner’s Manual
- June 16, 2024
- WHITE RODGERS
Table of Contents
WHITE-RODGERS 1F95-1277 Universal Thermostat
Product Information
Specifications:
- Thermostat Type: Universal
- Compatibility: Single Stage, Multi-Stage, Heat Pump
- Power Source: 24VAC
- System Compatibility: Heat Pump Type 1 (HP1), Heat Pump Type 2
(HP2), Single Stage (SS1), Multi-Stage (MS2)
Product Usage Instructions
Heat Pump Connections:
If you have a heat pump system, follow the wiring diagrams provided below. If you do not have a heat pump system, refer to figures 2 & 3.
Heat Pump Type 1 (HP1):
This is a single stage compressor system with gas or electric backup. Refer to the equipment manufacturers’ instructions for specific system wiring information.
Heat Pump Type 2 (HP2):
This is a multi-stage compressor or two compressor system with gas or electric backup. Refer to the equipment manufacturers’ instructions for specific system wiring information.
After wiring, see the INSTALLER CONFIGURATION section for proper thermostat configuration.
Single Stage and Multi-Stage Connections:
If you have a single stage (SS1) or multi-stage (MS2) system, follow the wiring diagrams provided below. Refer to the equipment manufacturers’ instructions for specific system wiring information.
Single Stage (SS1):
This thermostat is designed to operate a single-transformer or two-transformer system.
Multi-Stage (MS2):
This thermostat is designed to operate a multi-stage gas, oil, or electric system.
After wiring, see the INSTALLER CONFIGURATION section for proper thermostat configuration.
Installer Configuration:
Once you have completed the wiring, you will need to configure the thermostat settings. Refer to the INSTALLER CONFIGURATION section in the user manual for detailed instructions on how to set up the thermostat according to your specific system type.
Remote Temperature Sensor:
If your system requires a remote temperature sensor, you can connect it to the thermostat using the provided wiring connections. Refer to the wiring diagrams for the appropriate connections.
Jumper:
If your system does not provide an E connection, you can jumper W2 to W/E to use the Auxiliary Heat in the Emergency Mode.
Optional Connections:
There are optional connections available for fault or malfunction indication, remote temperature sensor, or continuous backlight operation. Refer to the wiring diagrams for more information.
Frequently Asked Questions
Q: What type of systems is this thermostat compatible with?
A: This thermostat is compatible with Single Stage, Multi-Stage, and Heat Pump systems.
Q: How do I wire the thermostat for a heat pump system?
A: Follow the wiring diagrams provided in the user manual for Heat Pump Type 1 (HP1) or Heat Pump Type 2 (HP2) depending on your system configuration. Refer to the equipment manufacturers’ instructions for specific wiring information.
Q: Can I use this thermostat with a single stage or multi-stage system?
A: Yes, this thermostat can be configured for use with Single Stage (SS1) or Multi-Stage (MS2) systems. Follow the wiring diagrams provided in the user manual and refer to the equipment manufacturers’ instructions for specific wiring information.
Q: How do I configure the thermostat settings?
A: After completing the wiring, refer to the INSTALLER CONFIGURATION section in the user manual for detailed instructions on how to set up the thermostat according to your specific system type.
90 Series Blue Universal Thermostat Wiring Diagrams for 1F95-1277 Single Stage, Multi-Stage, Heat Pump
Heat Pump Connections
- If you do not have a heat pump system, refer to figures 2 & 3. Refer to equipment manufacturers’ instructions for specific system wiring information.
- You can configure the thermostat for use with the following heat pump systems.
- HEAT PUMP TYPE 1 (HP 1). Single stage compressor system; gas or electric backup.
- HEAT PUMP TYPE 2 (HP 2). Multi-stage compressor or two com-pressor system with gas or electric backup.
- After wiring, see INSTALLER CONFIGURATION section for proper thermostat configuration.
Figure 1 – Heat Pump Systems
NOTE: If your system does not provide an E connection, jumper W2 to W/E to use the Auxiliary Heat in the Emergency Mode.
- 24 VAC common connection optional for system operation.
Required for fault or malfunction indi-cation, remote temperature sensor, or for continuous backlight operation.
** Dual fuel option de-energizes compressor when auxiliary heat is energized.
Single Stage and Multi-Stage Connections
Refer to equipment manufacturers’ instructions for specific system wiring
information.
This thermostat is designed to operate a single-transformer or two-transformer
system.
You can configure the thermostat for use with the following fossil fuel
systems:
- SINGLE STAGE (SS 1) gas, oil or electric.
- MULTI-STAGE (MS 2) gas, oil or electric.
- After wiring, see INSTALLER CONFIGURATION section for proper thermostat configuration.
Figure 2 – Single Stage or Multi-Stage System (No Heat Pump) with Single Transformer
- 24 VAC common connection optional for system operation.
Required for fault or malfunc-tion indication, remote temper-ature sensor, or for continuous backlight operation.
Figure 3 – Single Stage or Multi-Stage System (No Heat Pump) with Two Transformers
NOTE: If continuous backlight or hardwired power input are desired but do not function in both HEAT and COOL modes, cut the heating transformer 24V wires and tape off. Connect the neutral circuit disconnected from the heating transformer to the neutral circuit of the cooling transformer. Discon-nect the wire to the RH terminal and install a jumper between RH and RC. Depending on the system requirements, replace the cooling transformer with a 75VA class II transformer if needed.
www.white-rodgers.com
PART NO. 37-6808C
Replaces 37-6808B
0808