White-Rodgers 1F83-277 Heating & Air Conditioning Auto Changeover Heat Pump Thermostat User Manual

White-Rodgers 1F83-277 Heating & Air Conditioning Auto Changeover Heat

Pump Thermostat

Heating & Air Conditioning Non-programmable, Auto Changeover, Multi-Stage/Heat
Pump Thermostat
PART NO. 37-6509E
Replaces 37-6509D0818
INSTALLATION INSTRUCTIONS

Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.

Product Information

Specifications

• Model: 1F83-277

• Type: Heating & Air Conditioning Non-programmable, Auto
  Changeover, Multi-Stage/Heat Pump Thermostat

• Compatibility:

  • Heat Pump (No Aux. or Emergency Heat)
  • Heat Pump (with Aux. or Emergency Heat)
  • Standard Heat & Cooling Systems
  • Two Stage Heat & Two Stage Cool
  • Standard Heat Only Systems
  • Standard Central Air Conditioning
  • Gas or Oil Heat
  • Electric Furnace

Product Usage Instructions

Preparations

Before starting the installation process, make sure you have the following tools:

• Hand or power drill with a 3/16 inch drill bit (if needed)
• Flat blade screwdriver
• Wire cutter/stripper

Removing Old Thermostat

Follow these steps to remove the old thermostat:

1. Shut off electricity at the main fuse box until installation is complete. Make sure the electrical power is disconnected.

2. Remove the front cover of the old thermostat.

3. With wires still attached, remove the wall plate from the wall.
   If the old thermostat has a wall mounting plate, remove both the thermostat and the wall mounting plate as an assembly.

4. Identify each wire attached to the old thermostat.

5. Disconnect the wires from the old thermostat one at a time.
   Make sure not to let the wires fall back into the wall.

Installing New Thermostat

Follow these steps to install the new thermostat:

1. Mount the new thermostat on the wall using the provided mounting hole template.
2. Connect each wire to the corresponding terminal on the new thermostat. Refer to the wire labels from the old thermostat for correct connections.
3. Securely tighten the screws to hold the wires in place.

PREPARATIONS

Assemble tools required as shown below.

YOUR THERMOSTAT REPLACES

REMOVING OLD THERMOSTAT

CAUTION

To prevent electrical shock and/or equipment damage, disconnect electric power to system at main fuse or circuit breaker box until installation is complete.

Before removing wires from old thermostat’s switching sub-base, label each wirelabel each wirelabel each wirelabel each wirelabel each wire with the terminal designation it was removed from.

1. Shut off electricity at the main fuse box until installation is complete. Ensure that electrical power is disconnected.
2. Remove Old ThermostatRemove Old ThermostatRemove Old ThermostatRemove Old ThermostatRemove Old Thermostat: A standard heat/cool thermostat consists of three basic parts:
a. The cover, which may be either a snap-on or hinge type.
b. The base, which is removed by loosening all captive screws.
c. The switching subbase, which is removed by unscrewing the mounting screws that hold it on the wall or adaptor plate.
3. Remove the front cover of the old thermostat. WithWithWithWithWith wireswireswireswireswires still attachedstill attachedstill attachedstill attachedstill attached, remove wall plate from the wall. If the old thermostat has a wall mounting plate, remove the thermostat and the wall mounting plate as an assembly.
4. Identify each wire attached to the old thermostat.
5. Disconnect the wires from the old thermostat one at a time. DO NOT LET WIRES FALL BACK INTO THEDO NOT LET WIRES FALL BACK INTO THEDO NOT LET WIRES FALL BACK INTO THEDO NOT LET WIRES FALL BACK INTO THEDO NOT LET WIRES FALL BACK INTO THE WALLWALLWALLWALLWALL.
6. Install new thermostat using the following procedures.

ATTENTION! This product does not contain mercury. However, this product may replace a unit which contains mercury.
Do not open mercury cells. If a cell becomes damaged, do not touch any spilled mercury. Wearing non-absorbent gloves, clean up the spilled mercury and place into a container which can be sealed. If a cell becomes damaged, the unit should be discarded.

Mercury must not be discarded in household trash. When the unit this product is replacing is to be discarded, place in a suitable container and refer to www.white-rodgers.com for the location to send product containing mercury.

MOUNTING AND WIRING

WARNING

Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could cause shock or fire hazard.
Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will damage thermostat and could cause personal injury and/or property damage.
Thermostat installation and all components of the system shall conform to Class II circuits per the NEC code.

Electric/Gas Switch (Fan Option)

This thermostat is configured from the factory to operate a heat/ cool, fossil fuel (gas, oil, etc.), forced air system. It is configured correctly for any system that DOES NOT require the thermostat to energize the fan on a call for heat. If you system is an electric heat or heat-pump system that REQUIRES the thermostat to turn on the fan on a call for heat, locate the ELEC/GAS switch on the back of the thermostat (see fig. 1) and switch it to the ELEC position. This will allow the thermostat to energize the fan immediately on a call for heat. If you are unsure if the heating/cooling system requires the thermostat to control the fan, contact a qualified heating and air conditioning service person.

When the thermostat is configured for Heat Pump, the thermostat will always power the circulator fan on a call for heat in the HEAT mode. The ELEC/GAS switch must be set to match the type of Auxiliary heat your system uses for proper operation in the EMERgency mode.
All wiring diagrams are for typical systems only. Refer to equipment manufacturers’ instructions for specific system wiring information.

CAUTION

Take care when securing and routing wires so they do not short to adjacent terminals or rear of thermostat.
Personal injury and/or property damage may occur.

Attach Thermostat Base to Wall

1. Remove the packing material from the thermostat. Gently pull the cover straight off the base. Forcing or prying on the thermostat will cause damage to the unit.
2. Connect wires beneath terminal screws on base using appropriate wiring schematic (see figs. 2 through 4).
3. Place base over hole in wall and mark mounting hole locations on wall using base as a template.
4. Move base out of the way. Drill mounting holes.
5. Fasten base loosely to wall, as shown in fig. 1, using two mounting screws. Place a level against bottom of base, adjust until level, and then tighten screws. (Leveling is for appearance only and will not affect thermostat operation.)
If you are using existing mounting holes, or if holes drilled are too large and do not allow you to tighten base snugly, use plastic screw anchors to secure subbase.
6. Push excess wire into wall and plug hole with a fireresistant material (such as fiberglass insulation) to prevent drafts from affecting thermostat operation.

Battery Location

2 “AA” alkaline batteries are included in the thermostat at the factory with a battery tag to prevent power drainage. You must remove the battery tag to engage the batteries.
If “BATT” is displayed, the batteries are low and should be replaced. For best results, replace all batteries with new premium brand alkaline batteries such as Duracell® or Energizer®. To replace batteries, press system button to OFF, install the batteries along the top of the base (see Fig.
1). The batteries must be installed with the positive (+) end to the left.

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” alkaline batteries.

NOTE

If safety circuits are in only one of the systems, remove the transformer of the system with NO safety circuits.

WIRING DIAGRAMS

NOTE

Polarity must be observed. If the HOT side of the second transformer is jumpered to the COMMON side of the first transformer a short will be made. Damage to equipment will occur when power is restored.

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” alkaline batteries.

Heat Pump Terminal Outputs

Refer to equipment manufacturers’ instructions for specific system wiring information.
You can configure the thermostat for use with the following heat pump system types:

HEAT PUMP TYPE 1. Single stage compressor system; gas or electric backup.

This thermostat is designed to operate a single-transformer system. If you have a two-transformer system, cut and tape off

one transformer. If transformer safety circuits are in only one of the systems, remove the transformer of the system with NO safety circuits. If required, replace remaining transformer with a 75VA Class II transformer. After disconnecting one transformer, the two commons must be jumpered together.

Use the terminal output information below to help you wire the thermostat properly for your heat pump system. After wiring, see CONFIGURATION section for proper thermostat configuration.

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” alkaline batteries.

Figure 5. Typical wiring diagram for single transformer multi-stage systems

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” alkaline batteries.

Multi-Stage Terminal Outputs

Refer to equipment manufacturers’ instructions for specific system wiring information.
You can configure the thermostat for use with either multi-stage electric heat systems or multi-stage gas systems. When configured for electric heat, the G terminal (blower/fan) will be energized on a call for heat.
This thermostat is designed to operate a single-transformer system. If you have a two-transformer system, cut and tape off

one transformer. If transformer safety circuits are in only one of the systems, remove the transformer of the system with NO safety circuits. If required, replace remaining transformer with a 75VA Class II transformer. After disconnecting one transformer, the two commons must be jumpered together.

Use the terminal output information below to help you wire the thermostat properly for your multi-stage system. After wiring, see CONFIGURATION section for proper thermostat configuration.

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” alkaline batteries.

CHECK THERMOSTAT OPERATION

NOTE

To prevent static discharge problems, touch side of thermostat to release static build-up before touching any keys.

If at any time during testing your system does not operate properly, contact a qualified service person.

Fan Operation

If your system does not have a G terminal connection, skip to Heating System.
1. Turn on power to system.
2. Move FAN switch to ON position. The blower should begin to operate.
3. Move FAN switch to AUTO position. The blower should stop immediately.

CAUTION

Do not allow the compressor to run unless the compressor oil heaters have been operational for 6 hours and the system has not been operational for at least 5 minutes.

Heating System

1. Press SYSTEM button to select the Flame icon . If the auxiliary heating system has a standing pilot, be sure to light it.
2. Press to adjust thermostat setting to 1° above room temperature. The heating system should begin to operate. The display should show “STG1”. However, if the setpoint temperature display is flashing, the compressor lockout feature is operating (see Configuration menu, item 5).
3. Adjust temperature setting to 3° above room temperature.
If your system configuration is set at MS2, HP2 or HP1, the auxiliary heat system should begin to operate and the display should show “STG1+2”.
4. Press to adjust the thermostat below room temperature.
The heating system should stop operating.

Emergency System

EMER bypasses the Heat Pump to use the heat source wired to terminal E on the thermostat. EMER is typically used when compressor operation is not desired, or you prefer back-up heat only.

1. Press SYSTEM button to select Snowflake icon
2. Press to adjust thermostat setting above room temperature. The Aux. heating system will begin to operate. The display will show “STG1” flashing “EMER” and Flame icon ( ) to indicate that the Aux. system is operating.
3. Adjust temperature setting to 3° above room temperature.
The auxiliary heat system should begin to operate and the display should show “STG1+2”.
4. Press to adjust the thermostat below room temperature.
The Aux. heating system should stop operating.

OPERATION

Before you begin programming your thermostat, you should be familiar with its features and with the display and the location and operation of the thermostat buttons. Your thermostat consists of two parts: the thermostat cover and the base. To remove the cover, pull it straight out from the base. To replace the cover, line up the cover with the base and press until the cover snaps onto the base.

The Thermostat Buttons and Switches

1. Raises temperature setting
2. Lowers temperature setting.
3. FAN switch (ON, AUTO)
4. SYSTEM button (COOL, AUTO, HEAT, EMER, OFF)

The Display

5. Flame icon is displayed when the system is in HEAT mode. Snowflake icon is displayed when the system is in COOL mode. Flame icon ( ) and Snowflake icon ( ) are displayed simultaneously when thermostat is in AUTO mode.
6. Displays “BATT” when the 2 “AA” batteries are low and should be replaced. Only “BATT” and “LO” in the minutes field are displayed when batteries are low and with no system power.
7. Displays current temperature or “LO” in the minutes field when batteries are low.
8. Displays set temperature (this is blank when SYSTEM is OFF).
9. Displays “FLTR” when the system has run for the programmed filter time period as a reminder to change or clean your filter.
10. Display when in keypad lockout mode.
11. “EMER” is displayed flashing when the system is in EMER mode.

12. “FAULT” will be displayed when there is a malfunction in the HEAT/COOL system.
13. Display ( ) when limited HEAT/COOL range is activated.
The “ ” icon will flash if an attempt is made to adjust the temperature beyond the limited HEAT/COOL temperature range.
14. Stage 1 & 2 indicators: The thermostat shall indicate when the first and second stage is energized except in emergency mode. The icon is “STG 1” for the first stage energized. The icons for the first and second stage energized are “STG1+2” located in the upper right side of the display.

CONFIGURATION MENU

The configuration menu allows you to set certain thermostat operating characteristics to your system or personal requirements.

Set SYSTEM button to OFF, then simultaneously press and to enter configuration menu. The display will show the first item in the configuration menu.

The configuration menu table summarizes the configuration options. An explanation of each option follows.

Press SYSTEM to change to the next menu item. To exit the menu and return to the program operation, press RUN. If no keys are pressed within fifteen minutes, the thermostat will revert to normal operation.

1. Single Stage, Multi-stage or Heat Pump System Configuration – This control can be configured for Heat Pump or two stage heat/two stage cool multi-stage operation.
   The display indicates “MS 2” (default for multi-stage mode) in the display. The Multi-stage configuration can be toggled to “SS1”, “HP2”, or “HP1” by pressing the or key. In Multi-stage configuration, SYSTEM button will not have EMERgency mode.
2. Fast or Slow Cycle Selection – The factory default setting is fast cycle, which cycles 1st stage at approximately 1.2°F and 2nd stage 0.75°F. If you prefer slow cycle, press the or key to change to SL. The 1st stage and 2nd stage would be 1.5°F and 1.2°F respectively.

CONFIGURATION MENU

Press the SYSTEM button until OFF is displayed, then press the and simultaneously

3. Select Compressor Lockout CL OFF or ON – Selecting CL ON will cause the thermostat to wait 5 minutes before turning on the compressor if the heating and cooling system loses power. It will also wait 5 minutes minimum between cooling and heating cycles. This is intended to help protect the compressor from short cycling. Some newer compressors already have a time delay built in and do not require this feature. Your compressor manufacturer can tell you if the lockout feature is already present in their system. When the thermostat compressor time delay occurs it will flash the setpoint for about five minutes.

4. Select Backlight Display – The display backlight improves display contrast in low lighting conditions. When the C terminal is powered, selecting backlight CdL ON will turn the light on continuously. Select backlight OFF will keep the light on momentarily after any key is pressed. When the C terminal is not powered, this selection has no effect.

5. Select (Fast) Second Stage ON or OFF – In the run mode, if the setpoint temperature is manually raised by 3°F (2°C) or more above the actual temperature with the , and the fast second stage feature is enabled, FA ON, the second stage will energize immediately. With FA OFF, second stage will not energize until the setpoint temperature is 1°F or more above actual temperature for more than ten minutes.

6. Select filter replacement run time – The thermostat will display FLTR after a set time of operation. This is a reminder to change or clean your air filter. This time can be set from 0 to 1950 hours in 50 hour increments. A selection of 000 will cancel this feature. When “FLTR” is displayed, you can clear it by pressing SYSTEM. This resets the timer and starts counting the hours until the next filter change. Contact your system manufacturer for a specific replacement/main tenance interval.

7. Select Temperature Display Adjustment 4 LO to 4 HI – Allows you to adjust the room temperature display up to 4° higher or lower. Your thermostat was accurately calibrated at the factory but you have the option to change the display temperature to match your previous thermostat. The current or adjusted room temperature will be displayed on the left side of the display.

8. Select F° or C° Readout – Changes the display readout to Centigrade or Fahrenheit as required.

9. Selected Auto mode – This control will feature AUTO changeover mode when AU on is selected (default). Press the or keys (not available on earlier models) to defeat the auto changeover mode (OFF).
   10)Limited Heat Range – This feature provides a maximum setpoint temperature for heat. The default setting is 90°F. It can be changed between 62°F and 89°F by pressing the or key.
   11)Limited Cool Range – This feature provides a minimum setpoint temperature for cool. The default setting is 45°F. It can be changed between 46°F and 82°F by pressing the or key.
   12)This Feature Not Available.

13. & 14.) Keypad Lockout – This menu selection will display lock icon and “OFF” (default, keypad not locked out).

The and are used to toggle the selection between OFF and ON (keypad locked out). When the keypad lockout selection is enabled (ON), and the SYSTEM button is pressed again, the display will indicate the number “0” (default, still disabled) in the time digits. The and are used to set the combination number from 0 to 999. If a combination of 0 is selected and the SYSTEM button is pressed, the menu will be exited and keypad will not be locked. If 1 to 999 is selected and the SYSTEM button is pressed, the combination is stored into memory and the menu is exited. The will display designating keypad locked with a valid combination. The SYSTEM button will operate for 10 seconds after the menu mode is exited to allow the user to change the mode from OFF to the desired SYSTEM mode.

While the keypad is locked out, a simultaneous press of and will enter the configuration menu from any mode instead of only OFF mode. When the menu is entered with the keypad lockout feature enabled, the first menu item displayed is the combination code 0. The or keys are used to set the combination unlock number from 0 to 999. If the unlock number matches exactly with the combination lock number stored in memory when the SYSTEM button is pressed, the keypad is unlocked and the is removed. If the unlock number does not match when the SYSTEM button is pressed, the menu is exited and the keypad remains disabled.

To reset the combination code and unlock the keypad if the code is forgotten, see troubleshooting section.

SPECIFICATIONS

ELECTRICAL DATA

Electrical Rating:
20 to 30 VAC 50/60 Hz or DC
0.05 to 1.5 Amps (Load per terminal)
2.5 Amps Maximum Total Load (All terminals combined)

THERMAL DATA

Setpoint Temperature Range: 45°F to 90°F (7°C to 32°C)
Operating Ambient Temperature Range: 32°F to 105°F
Operating Humidity Range: 0 to 90% RH (non-condensing)
Shipping Temperature Range: -40°F to 150°F

OPERATION

The system “mode” is selected by pressing the SYSTEM button. Icons on the bottom right corner of the display will indicate the mode: COOL , AUTO , HEAT , EMER, or OFF. In any mode except OFF, the setpoint temperature will be shown on the right side of the display. In OFF, this area will be blank. The current temperature will be displayed on the left side of the display.
To operate properly in the AUTO mode, the heat setpoint temperature cannot be the same as or higher than the cool setpoint temperature. The heat setpoint must be at least 1° lower than the cool setpoint.

Automatic System Changeover
When the thermostat is in the AUTO mode, both the Flame and Snowflake icons are displayed. The thermostat will call for heat or cool depending on the room temperature. The setpoint temperature displayed will be that of the last mode called. If the last system cycle was heat, the HEAT setpoint will be displayed.
If the room temperature raises above the HEAT setpoint and the COOL setpoint and a call for cool is required, the temperature displayed will change to be the COOL setpoint.

Second Stage Time Delay
Your thermostat is designed to determine the optimum time to activate the second stage. Simply raising the temperature in heating or lowering it in cooling will not always force the thermostat to bring the second stage on quickly. There is a time delay from 0-30 minutes depending on the performance of the first stage of the system.
EXAMPLE: For the last 2 hours the thermostat is set on 70° and the room temperature is 70° with the equipment using only the first stage of heat. Since the equipment is keeping the temperature within 1° of setpoint, the thermostat will delay second stage for a longer time if you manually raise the temperature or if the room temperature quickly changes. Once the second stage comes on, it will come on sooner the next time there is a difference between the setpoint and the room temperature. The net effect of the staging program is that when the first stage is capable of making temperature the second stage will delay longer. When the thermostat calculates that first stage cannot make temperature in a reasonable time, the second stage will come on sooner. This built in function automatically optimizes the use of additional stages of heat or cool.

LOW BATTERY INDICATOR

If the 2 “AA” alkaline batteries are low and should be replaced, the display will be blank except for “LO BATT”. We recommend replacing batteries every 2 years. If the home is going to be unoccupied for an extended period (over 3 months), the batteries should be replaced before leaving. When the batteries are low, pressing any button will cause the display to operated for ten seconds. After ten seconds, the display will be blank except for “LO BATT”. You cannot program with low batteries, but you can override setpoint temperature. After “LO BATT” has been displayed for 4 weeks, the thermostat will raise the temperature 10 degrees above your setpoint in COOL mode and will drop the temperature 10 degrees below your setpoint in HEAT mode. If the “LO BATT” condition continues, and when it reaches certain value, the thermostat will turn off all the loads and “LO BATT” will flash.

TROUBLESHOOTING

Reset Operation

If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermostat by removing the wires from terminals R and C and removing batteries for 2 minutes. After resetting the thermostat, replace the wires and batteries. If the thermostat has been reset and still does not function correctly, contact your heating/cooling service person or place of purchase.

setpoint above room temperature. Within a few seconds the thermostat should make a soft click sound. This sound usually indicates the thermostat is operating properly. If the thermostat does not click, try the reset operation listed above. If the thermostat does not click after being reset contact your heating and cooling service person or place of purchase for a replacement. If the thermostat clicks, contact the furnace manufacturer or a service person to verify the heating is operating correctly.
No Cool| 1. SYSTEM button not pressed to COOL.
2. Loose connection to thermostat or system.
3. Cooling system requires service or thermostat requires replacement.| Press SYSTEM button to COOL and lower setpoint below room temperature.
Verify thermostat and system wires are securely attached.
Same procedure as diagnostic for No Heat condition except set the thermostat to COOL and lower the setpoint below the room temperature. There may be up to a five minute delay before the thermostat  clicks in Cooling.
Heat, Cool or Fan Runs Constantly| 1. Possible short in wiring.
2. Possible short in thermostat.
3. Possible short in heat/cool/fan system.
4. FAN Switch set to Fan On.| Check each wire connection to verify they are not shorted or touching together. No bare wire should stick out from under terminal screws. Try resetting the thermostat as described above. If the condition persists the manufacturer of your system or service person can instruct you on how to test the Heat/Cool system for correct operation. If the system operates correctly, replace the thermostat.
Furnace
(Air Conditioner)
Cycles Too Fast
or Too Slow (narrow or wide temperature swing)| 1. The location of the thermostat and/or the size of the Heating System may be influencing the cycle rate.| Digital thermostats normally provide precise temperature control and may cycle faster than some older mechanical models. A faster cycle rate means the unit turns on and off more frequently but runs for a shorter time so there is no increase in energy use. If you would like to increase the cycle time, choose SL for slow cycle in the menu, step 4. If an accept- able cycle rate is not achieved as received or by choosing slow cycle, contact a local service person for additional suggestions.
Thermostat Setting & Thermostat Thermometer Disagree| 1. Thermostat thermometer setting requires adjustment.| The thermometer can be adjusted +/- 4 degrees. See Temperature Display Adjustment in the Configuration Menu section.
Blank Display and/or Keypad Not Responding| 1. Voltage spike or static discharge.| Use the Reset Operation at top of previous page.
Heat Setpoint will not Respond to the Temperature Up Key| 1. The desired setpoint conflicts with the setpoint of the COOL mode.| Change system mode to COOL. Raise the Cool setpoint. Return to HEAT mode and set desired temperature.
Cool Setpoint will not Respond to the
Temperature Down Key| 1. The desired setpoint conflicts with the setpoint of the HEAT mode.| Change system mode to HEAT. Lower the Heat setpoint. Return to COOL mode and set desired temperature.
Forgot Keypad Lockout Code| | CAUTION: This resets the thermostat to factory default settings of the configuration menu. After performing this reset, the thermostat will require configuration again. Be sure that you know the required configuration settings before resetting.
With the thermostat in any mode, press      and      at the same time to enter the configuration menu at the point where the lockout code is to be entered. Press
and      and SYSTEM button at the same time to reset the lockout code, unlock the keypad and reset all configuration menu settings.
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Why won’t my 2nd or 3rd stage come on?| First Stage is keeping up with demand| Your thermostat is designed to determine the optimum time to activate the second stage. Simply raising the temperature in heating or lowering it in cooling will not always force the thermostat to bring the second stage on quickly. There is a time delay from 0-30 minutes depending on the performance of the first stage of the system.
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FAQ

Does this product contain mercury?

No, this product does not contain mercury. However, it may replace a unit that contains mercury. If a mercury cell becomes damaged, do not touch any spilled mercury. Clean up the spilled mercury while wearing non-absorbent gloves and place it into a sealed container. When discarding a unit containing mercury, refer to www.white-rodgers.com for proper disposal instructions.

Can this thermostat be used on circuits exceeding specified voltage?

No, this thermostat should not be used on circuits exceeding the specified voltage. Higher voltage can damage the control and pose a shock or fire hazard.

What should I do if a cell containing mercury becomes damaged?

If a cell containing mercury becomes damaged, do not touch any spilled mercury. Wear non-absorbent gloves, clean up the spilledmercury, and place it into a container that can be sealed. If a cell becomes damaged, the unit should be discarded following proper disposal instructions.

Where can I find more information about the product and the

manufacturer?

You can find more information about the product and the manufacturer, White- Rodgers (a division of Emerson Electric Co.),
at their website: www.white-rodgers.com

What is the part number for this product?

The part number for this product is 37-6509E. It replaces the previous part number 37-6509D.

References

• White-Rodgers Brand | Copeland US
• Manual-Hub.com – Free PDF manuals!

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