White Rodgers 1F57-312 User Manual

- INSTRUCTIONS-

WHITE-RODGERS

The "TOTAL CONCEPT" People

These multi-stage heating-cooling thermostats provide low
voltage control of up to two stages of heating and two stages
of cooling. Switches on the Sub-Base provide convenient
selection of heating, cooling, and blower operation on cooling
air conditioning systems using electric heat where thermostat

SELECTING THERMOSTAT LOCATION

The proper location of the room thermostat is most important

to insure that it will provide a comfortable home temperature.

Observe the following general rules when selecting a location:

1. Locate it about 5 ft. above the floor.

2. Install it on a partitioning wall, not on an outside wall.

3. Never expose it to direct light from lamps, sun, fireplaces,
etc.

4. Avoid locations close to doors that lead outside, windows,
or adjoining outside walls.

INSTALLATION

Attaching Sub-Base to Wall

1. Route wires from heating and cooling equipment to
thermostat location and pull wires through hole in wall so
that 6 in. of cable protrudes.

2. Pull wires through opening near center of sub-base and
connect wires beneath proper terminals screws as shown
under "wiring".

3. Push excess wire into wall or switch box and plug up hole
to prevent drafts from affecting thermostat operation.

4. Fasten sub-base loosely to wall in position shown in Fig. 1
using two mounting screws provided. Level sub-base by
placing spirit level on top of sub-base. Tighten mounting
screws to secure sub-base in level position.

Mounting Thermostat to Sub-Base

Step 1. Remove cover from thermostat by pulling it straight

outward.

Step 2. Attach thermostat base to sub-base, being sure that all

six screws are tightened snugly since they serve as

TYPE 1F57-312 LOW VOLTAGE

MULTI-STAGE THERMOSTAT

(2 Stage Heat, 2 Stage Cool)

(Fan Relay cycles on both heating & cooling)

cycles the fan relay on both heating and cooling.

First stage Heat is equipped with an adjustable heat anticipator
while 2nd stage is non-anticipated. First stage Cooling is
equipped with cooling anticipation while the 2nd stage is not.

5. Avoid locations close to radiators, warm air registers, or in
the direct path of heat from them.

6. Make sure there are no pipes or duct work in that part of
the wall chosen for the thermostat location.

7. Never locate it in a room that is warmer or cooler than the

rest of the home, such as kitchen or hallway.

8. The living or dining room is normally a good location,

provided there is no cooking range or refrigerator on
opposite side of wall.

MOUNTING SCREWS

COVER

electrica

sub-base.

NOTE: Do not assembly cover to thermostat base until
heat anticipator has been set as described below.

connections between thermostat and

HEATING ANTICIPATION

This thermostat is equipped with an adjustable heat
anticipator on 1st stage of heating. The anitcipator may be
adjusted for current ratings from .15 to 1.0 Amp.

1. Check setting of adjustable heat anticipator and readjust if
necessary to comply with setting specified on installation
instructions
installed.

2. Snap on thermostat cover and set thermostat to desired
setting.

Additional adjustments, if necessary, may be made as follows;

Heater cycles too long — Set adjustable heater to a slightly
lower dial setting (1/2 division).

mu WHITE-RODGERS DIVISION

■■ ^ 9797 REAVIS ROAD

I

included with heating equipment being

EMERSON ELECTRIC CO

imH ST. LOUIS. MISSOURI 63123

Printed in U.S.A.

IsmilsRSDN^

Heater cycles too short — Set adjustable heater to a slightly

higher dial setting (1/2 division).

PART No. 37-2894-1

Replaces 37-2894

The cooling anticipator for the 1st stage of cooling is a fixed
non-removable heater. It is for use on current draws from 0 to

1.5 Amp.

The chart at right shows the
different system functions with
the System and Fan Selector
switches in various positions.

All wiring should be done according to local and National electrical codes and ordinances.

COOLING ANTICIPATION

OPERATION

1 Shows Po»itioii of Switchos

□ □ □

COOi Off NEAT

■ □ □

■ □ □

STSTiM

PAN

□ □

AUTO ON

■ □ □ ■ □

□ ■ □ ■ □

□ ■

■ □

■ □ □ □ ■

□ ■ □ □ ■

WIRING

OPERATION

No heating, no cooling, no fan.

No heating, no cooling, but fan runs continuously.

Cooling system cycles from thermostat.

Fan runs continuously.

Cooling system and fan cycle from thermostat.

Heating system and fan cycle from thermostat.

Heating system turns on and off from thermostat.
Fan runs continuously.

Internal Wiring
of 1F57-312

S.P.D.T. MERCURY SWITCH

S.P.D.T. MERCURY SWITCH

In "OFF" position,
system switch breaks
both heating and
cooling control voltage
circuits.

TRANSFORMER