EMERSON White-Rodgers 1F89-11 Non-programmable Electronic Digital Heat Pump Thermostat INSTALLATION AND OPERATION INSTRUCTIONS

EMERSON White-Rodgers 1F89-11 Non-programmable Electronic Digital Heat Pump Thermostat

DESCRIPTION

Your new White-Rodgers Digital Heat Pump Thermostat uses the technology of a solid-state microcomputer to provide precise temperature control. This thermostat offers you the flexibility to set heating and cooling temperatures that fit your needs.

Features:

• Simultaneous heat and cool temperature storage
• LCD continuously displays set point and room temperature
• °F/°C convertibility
• Temperature range 45° to 90°F
• Eight terminals for single or two-transformer systems
• O/B terminal for heat pump systems
• Armchair Demonstration Capability

PRECAUTIONS

This thermostat is intended for use with a 24-volt system; do not use this thermostat with a millivolt or line voltage system. If in doubt about whether your wiring is millivolt, line, or low voltage, have it inspected by a qualified heating and air conditioning contractor or electrician. Do not exceed the specification ratings. All wiring must conform to local and national electrical codes and ordinances. This control is a precision instrument and should be handled carefully. Rough handling or distorting components could cause the control to malfunction.

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

WARNING

Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazards. Do not short out terminals on 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.

SPECIFICATIONS

ELECTRICAL DATA

• Electrical Rating: 20 to 30 VAC 50/60 Hz. or D.C.
  0.05 to 1.5 Amps (Load per terminal)
  1.5 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

APPLICATIONS
For use with:

• Heat pump systems with up to two stages heat, one stage cool

DO NOT USE WITH:

• Millivolt systems
• Systems exceeding 30 VAC and 1.5 amps
• 3-wire zoned hydronic heating systems

INSTALLATION

REMOVE OLD THERMOSTAT

1. Shut off electricity at the main fuse box until installation is complete. Ensure that the electrical power is disconnected.
2. Remove the front cover of the old thermostat. With wires still 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.
3. Identify each wire attached to the old thermostat using the labels enclosed with the new thermostat.
4. Disconnect the wires from the old thermostat one at a time. do NOT LET WIRES FALL BACK INTO THE WALL.
5. Install a new thermostat using the following procedures.

ATTACH THERMOSTAT BASE TO WALL

1. Remove the packing material from the thermostat.
2. If necessary, cut the non-electric heat jumper (see NON-ELECTRIC HEAT SYSTEMS). Check the setting of the O/B switch (see O/B TERMINAL SWITCHSELECTION).
3. If you want to review the thermostat features before mounting the thermostat on the wall, see ARMCHAIR DEMONSTRATION.
4. Gently pull the thermostat cover straight off the base. Forcing or prying on the thermostat will cause damage to the unit.
5. Check that the system switch is in the OFF position. Connect wires beneath terminal screws on the base using the appropriate wiring schematic (see figs. 3 through 5).
6. Place the base over the hole in wall and mark mounting hole locations on the wall using the base as a template.
7. Move the base out of the way. Drill mounting holes.
8. Fasten base loosely to the wall, as shown in fig. 2, using two mounting screws. Place a level against the bottom of the base, adjust until level, and then tighten the screws. (Leveling is for appearance only and will not affect thermostat operation.) If you are using existing mounting holes, or if the holes drilled are too large and do not allow you to tighten base snugly, use plastic screw anchors to secure sub base.
9. Push excess wire into the wall and plug the hole with a fire-resistant material (such as fiberglass insulation) to prevent drafts from affecting thermostat operation.

NON-ELECTRIC HEAT SYSTEMS

Read the following information before clipping the nonelectric heat jumper. If you are unsure of your application, contact a qualified service person. If your emergency or auxiliary system is non-electric (gas, oil, etc.) and will energize the blower, then the jumper, W904, on the back of the thermostat base must be cut (see fig. 1). If your emergency or auxiliary heat system is electric and requires that the thermostat energize the fan circuit, do not cut jumper W904.

O/B TERMINAL SWITCH SELECTION

The O/B switch on this thermostat is factory set to the “O” position. This will accommodate the majority of heat pump applications, which require the changeover relay to be energized in COOL. If the thermostat you are replacing or the heat pump is installed with this thermostat requires the “B” terminal, to energize the changeover relay in HEAT, the O/B switch must be moved to the “B” position.

ARMCHAIR DEMONSTRATION

Armchair Demonstration is a unique feature that allows you to review your thermostat features before being mounted on the wall. If you wish an Armchair Demonstration of your thermostat, temporarily hold a new 9-volt battery against the wires in the battery cutout on the back of the thermostat base for approximately 45 seconds. This will provide a charge that will last approximately 30 to 45 minutes to allow the thermostat to be observed.

NOTE
The following wiring diagrams show typical terminal identification and wiring. For proper installation, refer to the original manufacturer’s instructions. Relay contacts shown are thermostatically operated.

ADJUSTABLE ANTICIPATION

The first stage has anticipation that can be set to 2.5 or 4 cycles per hour for heating or cooling. The second stage heat has fixed anticipation. To change the first stage anticipation in the HEAT mode, place the SYSTEM switch in the OFF position. While holding the button, move the SYSTEM switch to HEAT. The display will show S for slow (factory setting) or F for fast. Release the button when the desired anticipation setting is displayed.

CHECK THERMOSTAT OPERATION

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

1. Turn on the power to the system.
2. Move the SYSTEM switch to the OFF position.
3. Move the FAN switch to ON. The blower should begin to operate.
4. Move the FAN switch to the AUTO position. The blower should stop within a short period of time.

Heating System

1. Move the SYSTEM switch to the HEAT position. If the auxiliary heating system has a standing pilot, be sure to light it.
2. Press to adjust the thermostat setting to 90° and hold for five seconds. Both stages of the heating system should begin to operate. However, if the word HEAT is flashing, the compressor lockout feature is operating (see Lockout Bypass Option to temporarily override the compressor lockout feature during testing).
3. Press to adjust the temperature setting below room temperature. The auxiliary heating system will stop immediately, and the first stage will stop within three to four minutes.

Cooling System

CAUTION
To prevent compressor and/or property damage, if the outdoor temperature is below 50°F, DO NOT operate the cooling system.

1. Move the SYSTEM switch to the COOL position.
2. Press to adjust the thermostat setting below room temperature. The blower should come on immediately on high speed, followed by cold air circulation. However,if the fan is running but the compressor is not running and the word COOL is flashing, the compressor lockout feature is operating (see Lockout Bypass Option to temporarily override the compressor lockout feature during testing).
3. Press to adjust the temperature setting above room temperature. The cooling system should stop operating.

LOCKOUT BYPASS OPTION
FOR QUALIFIED SERVICE TECHNICIANS’ USE ONLY. OPERATORS SHOULD NOT USE THIS FEATURE DUE TO THE POSSIBILITY OF EQUIPMENT OR PROPERTY DAMAGE, OR PERSONAL INJURY.
COMPRESSOR SHORT-TERM CYCLE PROTECTION
This thermostat has a built-in short term (5-minute) time delay. During this 5-minute period, the thermostat will lock out the compressor to allow head pressure to stabilize. If you want to override this feature while testing thermostat operation, move the SYSTEM switch to OFF position for 6 to 10 seconds then back to the desired mode. DO NOT USE THE LOCKOUT BYPASS OPTION UNLESS THE COMPRESSOR OIL HEATERS HAVE BEEN OPERATIONAL FOR 6 HOURS AND THE SYSTEM HAS NOT BEEN OPERATIONAL FOR AT LEAST 5 MINUTES.

OPERATION

Before you begin operating 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, gently pull it straight out from the base. To replace the cover, line up the cover with the base and press gently until the cover snaps onto the base.

THE THERMOSTAT BASE

Other than the buttons, the following are located behind the door on the bottom of the thermostat cover (see fig. 6). Pull the door down to open it.

The Thermostat Buttons and Switches

1. (Red arrow) Raises temperature setting.
2. (Blue arrow) Lowers temperature setting.
3. FAN switch (ON, AUTO).
4. SYSTEM switch (COOL, OFF, HEAT, EMER).
   The Display
5. HEAT is displayed when the SYSTEM switch is in the HEAT position. COOL is displayed when the SYSTEM switch is in the COOL position. COOL or HEAT is displayed (flashing) when the compressor is in lockout mode. OFF is displayed when the SYSTEM switch is in the OFF position.
6. displays the current room temperature.
7. EMERGENCY is displayed when the system switch is in the EMER position.
8. Displays current set temperature.

OPERATING FEATURES

Now that you are familiar with the thermostat buttons and display, read the following information to learn about the many features of the thermostat.

• TEMPERATURE SET POINT — Press or until the display shows the temperature you want.
• °F/°C CONVERTIBILITY — Press, and buttons until the temperature display is in Celsius (°C). To display Fahrenheit (°F), repeat the process.
• TEMPERATURE DISPLAY ADJUSTMENT — Your new thermostat has been accurately set up in our factory. However, if you wish, you may adjust your new thermostat temperature display to match your old thermostat. This can be accomplished (within a ±4° range) as follows:
  • Place the SYSTEM switch in the OFF position.
  • While holding the button, move the SYSTEM switch to HEAT or COOL. Release the button when the display shows only the current temperature.
  • Press to adjust the displayed temperature to your desired setting.
  • The thermostat will resume normal operation within two minutes.
• RESET BUTTON – (see fig. 2) resets the thermostat to the factory setting. This button can be used to reset the thermostat if it has been subjected to a voltage spike and has become scrambled or frozen.

SETTING YOUR THERMOSTAT

This thermostat is easy to operate. Set the SYSTEM switch to HEAT, COOL, or EMERgency. Press or until the temperature to maintain is shown on the right side of the display. To turn the system off, move the SYSTEM switch to OFF.
The FAN switch controls the fan operation. When the FAN switch is set to AUTO, the fan will cycle with the Heat Pump. When the FAN switch is set to ON, the fan will run continuously, regardless of the SYSTEM switch position.

REFERENCE:

Download Manual: EMERSON White-Rodgers 1F89-11 Non-programmable Electronic Digital Heat Pump Thermostat INSTALLATION AND OPERATION INSTRUCTIONS

EMERSON White-Rodgers 1F89-11 Non-programmable Electronic Digital Heat Pump Thermostat INSTALLATION AND OPERATION INSTRUCTIONS