White Rodgers 1f86-244 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:

• Simultaneous heat and cool set point storage

• Pre-set temperature control

• Backlit display

• Battery powered (2 "AA" Energizer® alkaline batteries included)

1F86-244

Non-Programmable Electronic Digital Thermostat

INSTALLATION AND

OPERATION INSTRUCTIONS

DESCRIPTION

• LCD continuously displays set point and room temperature

• °F/°C convertibility

• Temperature range 45° to 90°F

• RC, RH, W, Y, G , O and B terminals

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

• Set point storage in case of power loss

PRECAUTIONS

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.

ELECTRICAL DATA
Electrical Rating:

8 to 30 VAC 50/60 Hz. or D.C.

0.05 to 1.0 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:

-4°F to 150°F

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

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 (no auxiliary heat)

• 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. 37-6174A

0046

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 9797 Reavis
Road, St. Louis, MO, 63123-5398 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

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.

Electric/Gas

switch

Mounting

holes

Figure 1. Thermostat Base

BATTERY LOCATION

This thermostat requires 2 "AA" alkaline batteries to operate.
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 and provide power to the
thermostat.

If LO 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. 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.

2