White Rodgers 1F51 User Manual

- INSTRUCTIONS -

WHITE-RODGERS

AUTOMATIC CONTROLS

These low voltage thermostats are designed for operation of
the cooling system. A selector switch provides convenient
selection of cooling system and blower operation. These
thermostats are equipped with a fixed type cooling anticipator

■ 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.

TYPE 1D51 and 1F51

Low Voltage

COOLING ASTRO^STATS

with Sub-Base for System and Fan Selection

to provide for narrow differential control of room
temperature. Models are available with either sealed mercury
contacts, or with snap-action contacts.

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.

INSTALLATION

Attaching Sub-Base to Wall

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

2. Puli 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

1. Remove cover from thermostat by pulling it straight
outward.

2. Attach thermostat base to sub-base, being sure that all
screws are tightened snugly since they serve as electrical
connections between thermostat and sub-base.

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

MOUNTING SCREWS

I

IsMIERSDN

This thermostat is equipped with a fixed non removable
heater. It is for use on current draws from 0 to 1.5 Amp.

WHITE-RODGERS DIVISION

EMERSON ELECTRIC CO.
9797 REAVIS ROAD

ST. LOUIS, MISSOURI 63123

COOLING ANTICIPATION

Printed in U.S.A.

PART No. 37-2223

.OPERATION,

Position

Of Switch

FAIM AUTO

Both blower and cooling system cycle from thermostat.

SYSTEM OFF Neither blower nor cooling system will operate.

FAN ON

Blower runs continuously. Cooling system cycles from
thermostat.

WIRING

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

This wiring diagram shows connections for a typical system.
Always refer to any specific wiring instructions provided by
the equipment manufacturer.

Operation

-(>

LINE

»

CALIBRATION ADJUSTMENT

These thermostats have been carefully adjusted at the factory
and should not require re-calibration.

A few degrees difference between the indicator setting of the
thermostat and actual room temperature is not considered
important. If the disagreement is appreciable, however, first
make sure +hat the thermostat is properly located and leveled.
Then, if ’ 'Ubration still seems necessary, proceed as
follows:

These instructions apply for cooling models, with either sealed
mercury or snap-action contacts.

1. Move temperature adjustment lever to a setting about 5°
below room temperature.

2. Remove thermostat cover. Slip standard 7/32" wrench onto
hex nut beneath bimetal, and, holding temperature
adjustment lever stationary, turn hex nut counterclockwise
until mercury shifts to leift end of tube (or until movable
contact closes against magnet on snap-action types.)

3. Remove wire from terminal on thermostat or wall

mounting plate to take cooling anticipator out of circuit.

4. Replace thermostat cover. Wait 10 minutes for bimetal
temperature to stabilize. Don't stand near thermostat
during this period as your breath and body heat will affect
temperature of bimetal.

TRANS.

STANDARD 7/32" WRENCH

6. Slip Standard 7/32" wrench onto hex nut and holding
temperature adjustment lever stationary, turn hex nut
clockwise until mercury just barely shifts to right end of
tube (or until movable contact just moves off of magnet on
snap-action types.)

5. Move temperature adjustment lever to correspond to actual
room temperature. Then remove thermostat cover.

7. Replace wire removed in step 3. Then replace thermostat

cover and set thermostat to desired temperature.