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1F80-261

Programmable Electronic Digital Thermostat

INSTALLATION AND

OPERATION 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.

DESCRIPTION

Your new White-Rodgers 5-Day/1-Day/1-Day Digital Thermostat uses the technology of a solid-state microcomputer to provide precise time/temperature control. This thermostat offers you the flexibility to design heating and cooling programs that fit your needs.

Features:

•Separate 5-day (weekday), 1-day (Sat) and 1-day (Sun) programming with four separate time/temperature periods per day

•Simultaneous heat and cool program storage

•Preprogrammed temperature control

•Backlit display

•LCD continuously displays setpoint, and alternately displays time and room temperature

•Temperature override until next program period

•Manual program override (HOLD temperature)

•Temporary HOLD

•°F/°C convertibility

•Temperature range 45° to 90°F

•RC, RH, C, W, Y, G , O and B terminals

•Optional C terminal (Dual Power option)

•B and O terminals for single stage heat pumps (no auxiliary heat) or damper operation

•Program storage in case of power loss

•2 “AA” Energizer® alkaline batteries included

This thermostat is intended for use with a low voltage system; do not use this thermostat with a 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 system at 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 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.

SPECIFICATIONS

INSTALLATION

REMOVE OLD THERMOSTAT

1.Shut off electricity at the main fuse box until installation is complete. Ensure that 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 old thermostat one at a time. DO

NOT LET WIRES FALL BACK INTO THE WALL.

5.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 nonabsorbent gloves, take up the spilled mercury with sand or other absorbent material 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 return to White-Rodgers at 2895 Harrison Street, Batesville, AR 72501 for proper disposal.

ELECTRIC HEAT OR SINGLE-STAGE

HEAT PUMP SYSTEMS

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 your 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 GAS/ELECTRIC switch on the back of the thermostat (see fig. 1) and switch it to the ELECTRIC 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.

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. If necessary, move the electric heat switch (see ELECTRIC HEAT SYSTEMS, above).

2.Connect wires beneath terminal screws on base using appropriate wiring schematic (see figs. 2 through 7).

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.

Screw anchors

Mounting

holes Electric/Gas switch

Mounting holes

White Rodgers 1f88 290 User Manual

Figure 1. Thermostat Base

White Rodgers 1f88-290 Manual

6.Push excess wire into wall and plug hole with a fire-resistant 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 with fresh 'AA' Energizer® alkaline batteries. To replace batteries, install the batteries along the top of the base (see Fig. 1). The batteries must be installed with the positive (+) end to the left.

HYDRONIC (HOT WATER OR STEAM)

HEATING SYSTEMS

This thermostat is set to operate properly with a forced-air heating system. If you have a hydronic heating system (a system that heats with hot water or steam), you must set the thermostat to operate properly with your system. Change the second option in the configuration menu to SL (see CONFIGURATION MENU, page 4).

CHECK THERMOSTAT OPERATION

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

Turn on power to the system.

Fan Operation

If your system does not have a G terminal connection, skip to

Heating System.

1.Move FAN switch to ON position. The blower should begin to operate.

2.Move FAN switch to AUTO position. The blower should stop immediately.

White Rodgers 1f88 290 User Manual Free

Figure 2. Typical wiring diagram for heat only, 3-wire, single transformer systems

JUMPER

WIRE

THERMOSTAT

Figure 5. Typical wiring diagram for heat/cool, 5-wire, two-transformer systems

Figure 3. Typical wiring diagram for cool only, 3-wire, single transformer systems

C‡ B O Y G W RC RH

24 VAC

Neutral

TRANSFORMER

Figure 6. Typical wiring diagram for heat pump with reversing valve energized in COOL

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White Rodgers 1f88 290 User Manual Pdf

Figure 4. Typical wiring diagram for heat/cool, 4-wire, single transformer systems

Figure 7. Typical wiring diagram for heat pump with reversing valve energized in HEAT

‡The 24 Volt neutral connection to terminal C on the thermostat is not required if the batteries are replaced once a year with fresh 'AA' Energizer® alkaline batteries.

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