White Rodgers 1F80-51 User Manual

WHITE-RODGERS

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.

Your new White-Rodgers 5-Day/2-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:

• Battery powered (3 “AA” Energizer® alkaline batteries in­cluded).

• Separate 5-day (weekday) and 2-day (weekend) programming

• Simultaneous heat and cool program storage

• Preprogrammed temperature control

• Four separate time/temperature settings per 24-hour period

1F80-51

Programmable Electronic Digital Thermostat

INSTALLATION AND

OPERATION INSTRUCTIONS

DESCRIPTION

• LCD continuously displays set point, and alternately dis­plays time and room temperature

• Temperature override until next program period

• Manual program override (HOLD temperature)

• User may select either 12- or 24-hour clock display

• °F/°C convertibility

• Temperature range 45° to 90°F

• Standard five terminals for single or two-transformer sys­tems

• B and O terminals for single stage heat pumps or damper
operation

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.

ELECTRICAL DATA
Electrical Rating:

8 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

PRECAUTIONS

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.

SPECIFICATIONS

APPLICATIONS

For use with:

• Standard heat/cool or heat only systems

• Electric heat systems

• Gas or oil fired systems

• Gas systems with intermittent ignition devices (I.I.D.)

and/or vent dampers

• Hydronic (hot water or steam) systems

• Single-stage heat pump systems

• Millivolt systems

DO NOT USE WITH:

• Multi-stage systems

• Systems exceeding 30 VAC and 1.5 amps

• 3-wire zoned hydronic heating systems

WHITE-RODGERS DIVISION

EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398

Printed in U.S.A.

PART NO. 37-5285E

Replaces 37-5285D

0004

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.

ELECTRIC HEAT OR SINGLE-STAGE

HEAT PUMP SYSTEMS

Read entire paragraph before setting electric heat switch. If you
are unsure of your application, contact a qualified serviceperson.

If you have a single-stage heat pump system, OR your system
uses central electric heat, where the blower is energized by a
separate circuit through the fan relay (meaning that the fan
turns on immediately on call for heat), then the switch on the
back of the thermostat base must be moved to the “ELECTRIC”
position (see fig 1). If the thermostat is energizing electric heat
sequencers, the switch MUST remain in the “GAS” position.

If you must move the switch to the “ELECTRIC” position (to the
left), use a small screwdriver or pencil.

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. 3 through 10).

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. 2, 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 fire-resistant
material (such as fiberglass insulation) to prevent drafts from
affecting thermostat operation.

BATTERY LOCATION

This thermostat requires 3 “AA” alkaline batteries to operate.
Batteries are installed in the thermostat at the factory with a
battery tag to prevent power drainage. You must remove the

battery tag to engage the batteries and provide power to the
thermostat.

If the word BATTERY is displayed, the batteries are low and
should be replaced with fresh “AA” Energizer® alkaline batteries.
To replace the batteries, install the batteries along the top of the
base (see fig. 2). The batteries must be installed with the
positive (+) ends to the left.

ELECTRIC GAS

Electric/Gas switch

Figure 1. Back of thermostat base

Alkaline batteries (3 "AA"–

install "+" ends to the left)

Screw anchors

RH

W

RC

G

Mounting

holes

B

O

Y

Figure 2. Thermostat base

HYDRONIC (HOT WATER OR STEAM)

HEATING SYSTEMS

This thermostat is set to operate properly if you have a forced­air 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. While in the
HEAT mode, change the setting by pressing and holding SET
TIME and VIEW PRGM buttons at the same time until the correct
setting is displayed (A for forced air; H for hydronic systems). If
there is a loss of battery power, or when you change batteries,
you must repeat this operation once battery power is restored.

NOTE

If you do not press both buttons at the same time, A or H will not
be displayed. If this happens, press RUN PRGM, then press and
hold SET TIME and VIEW PRGM at the same time.

2