White Rodgers 1F86-444 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 Digital Thermostat uses the technol­ogy of a solid-state microcomputer to provide precise tempera­ture control.

Features:

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

• Simultaneous heat and cool temperature storage

• LCD continuously displays set point and room temperature

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.

1F86-444

Non-Programmable Electronic Digital Thermostat

INSTALLATION AND

OPERATION INSTRUCTIONS

DESCRIPTION

• °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

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.

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

WHITE-RODGERS DIVISION

EMERSON ELECTRIC CO.
9797 REAVIS ROAD

R

ST. LOUIS, MISSOURI 63123-5398

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

• 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

Printed in U.S.A.

SPECIFICATIONS

PART NO. 37-5410C

Replaces 37-5410B

9805

INSTALLATION

RH

Y

THERMOSTAT

SYSTEM

G W

Figure 3. Typical wiring diagram for heating only,

2-wire, single transformer systems or millivolt systems

Heating
System

RCOB

24 VAC Transformer

or

Thermopile

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 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.

2

Electric/Gas switch

Mounting

holes

Thermostat

RW

ELECTRIC GAS

Figure 1. Back of thermostat base

Alkaline batteries (3 "AA"–

install "+" ends to the left)

Screw anchors

RH

W

RC

G

B

O

Y

Figure 2. Thermostat base

NOTE

Jumper wire must be
added between R and B
terminals on the primary
control (jumper wire not
provided with thermostat).

Add jumper wire

(not provided with thermostat)

3-wire Series 10

Primary Control

(located at furnace)

B

W

R

Figure 4. Typical wiring diagram for

3-wire SERIES 10 heating systems

Furnace