White Rodgers 1F56N-444 & 1E56N-444 Installation Instructions
These instructions provide guidance for installing White Rodgers Horizontal Snap-Action (1F56N-444) and Vertical Snap-Action (1E56N-444) thermostats.
System Compatibility
This thermostat is compatible with various heating and cooling systems:
| System Type | Compatible Models |
|---|---|
| Standard Heating & Cooling Systems - 4 or 5 wires | All Models |
| Standard Heat Only Systems, Standard Central Air Conditioning, Gas or Oil Heat, Hydronic (Hot Water) Zone Heat - 2 wires, Electric Furnace, Heat Pump (No Aux or Emergency Heat) | All Models |
| Millivolt Heat Only Systems - Floor or Wall Furnaces, Hydronic (Hot Water) Zone Heat - 3 wires | All Models |
| Heat Pump (with Aux or Emergency Heat), Baseboard Electric Heating or Line Voltage (120 or 240 Volt) | None |
1. Preparations
Assemble the following tools: power drill, flat blade screwdriver, wire cutter/stripper, level.
CAUTION: Failure to follow and read all instructions carefully before installing or operating this control could cause personal injury and/or property damage.
2. Thermostat Features
The thermostat consists of a subbase and a wallplate. The subbase contains the wiring terminals and the heat anticipator adjustment mechanism. The wallplate serves as the mounting surface.
3. Removing Old Thermostat
CAUTION: To prevent electrical shock and/or equipment damage, disconnect electrical power to the system at the main fuse or circuit breaker until installation is complete.
Before removing wires from the old thermostat's switching subbase, label each wire with the terminal designation it was removed from.
- Remove Old Thermostat: A standard thermostat has three parts: the cover, the base, and the switching subbase. Remove the cover, then loosen the captive screws to remove the base. Unscrew the mounting screws holding the subbase to the wall or adapter plate.
- Note Anticipator Setting: Record the anticipator setting from your old thermostat for future reference. The heat anticipator pointer, if adjustable, is typically set to a number representing the current rating of the primary control in your furnace (e.g., 2, 4, 8 or 0.2, 0.4, 0.8). If no heat anticipator is visible, proceed to the next step.
ATTENTION: This product does not contain mercury. If replacing a unit that contains mercury, do not open mercury cells. If a cell is damaged, do not touch spilled mercury. Use non-absorbent gloves to collect spilled mercury and place it in a sealed container. Dispose of damaged units properly according to local regulations. Refer to www.white-rodgers.com for mercury disposal information.
4. Mounting and Wiring
WARNING: Do not use on circuits exceeding specified voltage. Higher voltage will damage the control and could cause a shock or fire hazard. Do not short circuit terminals or the gas valve or primary control to test. Short or incorrect wiring will damage the thermostat and could cause personal injury and/or property damage. Thermostat installation and all system components must conform to Class II circuits per NEC code.
- Remove Base from Subbase: Loosen the screws on the base and remove it from the subbase.
- Mount Switching Subbase: Use the provided screws to mount the subbase or wallplate to the wall.
- Attach Wires to Appropriate Terminals:
- Two-Wire Systems (Heat Only or Cool Only): Replace the subbase with the wallplate. For Heat Only, connect one wire to R and one to W. For Cool Only, connect one wire to R and one to Y. Tighten any unused terminals securely.
- More Than Two Wires: Use the cross-reference chart for correct wire connections. For a four-wire heat/cool system, leave the factory-installed jumper between RC and RH attached. For a five-wire system, remove the factory-installed jumper between RC and RH.
- Electric Heat or Single-Stage Heat Pump Systems: These thermostats are factory-configured for fossil fuel forced-air systems. If your system requires the thermostat to energize the fan on a call for heat (electric heat or heat pump), remove the yellow factory-installed jumper wire from the Y terminal and connect it to the A terminal. For single-stage heat pump applications (no auxiliary heat), install a short jumper wire (not included) across terminals W and Y. If the system has a reversing valve connection energized in Cooling, attach it to O. If energized in Heating, attach it to B. This thermostat does not support multi-stage heating or cooling.
- Mount Thermostat Base: Gently push excess wire back into the wall opening. Plug the opening with a fire-resistant material (like fiberglass insulation) to prevent drafts. Mount the thermostat base to the subbase using the three captive screws. Tighten securely.
CAUTION: Take care when securing and routing wires so they do not short to adjacent terminals or the rear of the thermostat. Personal injury and/or property damage may occur.
Terminal Cross-Reference Chart
| New Thermostat Terminal Designation | Other Manufacturers' Terminal Designation | ||||
|---|---|---|---|---|---|
| RH | 4 | RH | M | R5 | R |
| RC | R | R | V | - | - |
| G | G | G | F | G | G |
| W | W | W | H | 4 | W |
| Y | Y | Y | C | Y6 | Y |
* These are four-wire, single-transformer systems. The factory-installed jumper wire between the RH and RC terminals must remain in place.
5. Set Heat Anticipator
Set the anticipator to match the setting of your old thermostat noted in Step 3, or to match the current rating stamped on your main heating control. The heat anticipator is adjustable from 0.15 to 1.2 amps. Adjust by rotating the contact arm. The setting is indicated by the numbers on the base pointed to by the pointer. If unsure, contact the heater manufacturer for a recommended setting.
Move the pointer counterclockwise to lengthen heating system cycles; move clockwise to shorten heating cycles. Adjustments should not be greater than 1/2 marking at a time.
For millivolt operation, rotate the contact arm to the Millivolt Link.
Snap on Cover: Carefully align the cover with the base and snap it on.
6. New Thermostat Operation
Thermostat on Subbase: After power is turned on, use the system switch to select heating, cooling, or off. Use the fan switch to control fan operation. In AUTO, the fan cycles with the system. In ON, the fan runs continuously.
Thermostat on Wallplate: For heat only, move the temperature lever to the highest temperature. For cool only, move the temperature lever to the lowest temperature.
7. Specifications
Electrical Data
| Rating | Value |
|---|---|
| Switch Rating | 24 VAC (30 VAC max.) |
| Heating Current | 0.15 to 1.2 Amps |
| Cooling Current | 0 to 1.5 Amps |
Anticipator Rating
| Heating | Adjustable from 0.15 to 1.2 Amps |
| Cooling | Fixed |
Thermal Data
| Temperature Setting Range | 50°F to 90°F (10°C to 32°C) |
| Operating Humidity Range | 0 to 90% non-condensing |
8. Troubleshooting
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No Heat/No Cool/No Fan (common problems) | 1. Blown fuse or tripped circuit breaker. 2. Furnace power switch to OFF. 3. Furnace blower compartment door or panel loose or not properly installed. |
Replace fuse or reset breaker. Turn switch to ON. Replace door panel in proper position to engage safety interlock or door switch. |
| No Heat | 1. Pilot light not lit. 2. Broken or melted anticipator wire. 3. Loose connection to thermostat or system. 4. Thermostat or heating system requires replacement or service. 5. System Switch not set to Heat. |
Re-light pilot. Excessive current or dead short in system. Have a qualified service person check the system before replacing thermostat. Verify thermostat and system wires are securely attached. Your furnace manufacturer or service person can describe how to test the heating system to verify it is operating correctly. If the heating system is capable of operation and the no heat condition persists, replace the thermostat. Set System Switch to Heat and raise temp above room temp. |
| Intermittent Heat | 1. Furnace Lock-Out Condition | Many furnaces have safety devices that shut the system down when a lock-out condition occurs. If the heat works intermittently contact the furnace manufacturer or local service person for assistance. |
| No Cool | 1. Loose connection to thermostat or system. 2. Thermostat or cooling system requires replacement or service. 3. System Switch not set to Cool. |
Verify thermostat and system wires are securely attached. Your cooling system manufacturer or service person can describe how to test the cooling system to verify it is operating correctly. If the cooling system is capable of operation and the no cooling condition persists, replace the thermostat. Set System Switch to Cool and lower temp below room temp. |
| Heat, Cool or Fan Runs Constantly. | 1. Possible short in wiring. 2. Possible short in thermostat. 3. Possible short in heat/cool/fan system. |
Check each wire connection to the thermostat to verify it is neatly looped under the terminals. No extra wire should stick out from under the terminals. |
| Furnace Cycles Too Fast or Too Slow (Narrow or wide temperature swing) | See Step 5, Adjusting the Anticipator. | The anticipation setting is the only adjustment that affects the heating cycle rate. If an acceptable cycle rate is not achieved using the anticipator contact a local service person for additional suggestions. The location of the thermostat, size of the Heat/Cool System and current draw can influence the cycle rate. |
| Cooling Cycles Too Fast or Too Slow (narrow or wide temperature swing) | 1. Poor thermostat location for sensing room temperature. 2. Cooling system over or undersized. 3. Excessive Current draw influencing thermostat. |
The cycle rate for cooling cannot be adjusted. The location of the thermostat, size of the Cool system and current draw can influence the cycle rate. Contact a local service person for suggestions. |
| Thermostat Setting and Thermostat Thermometer Disagree | 1. Thermostat thermometer setting requires adjustment. 2. Thermostat setting lever requires calibration. |
The thermometer can be adjusted by using a standard slotted screwdriver. Turn the thermometer pointer screw located inside the front cover to change the setting. For calibrating the setting lever contact a local heating and cooling service person. |
| Adjusting Thermometer | 1. Thermostat thermometer disagrees with other room thermometers. | The thermometer on the thermostat is accurately calibrated at our factory but you can adjust it by using a standard slotted screwdriver. Turn the thermometer pointer screw located inside the front cover to change the setting. |
