White Rodgers 179-1 Line Voltage for Cooling or Line Voltage for Heating Leaflet

Proper location of the heavy duty room thermostat is very
important to insure acceptable performance. The following
general rules will help determine proper location:

1. It is very important to be sure that the thermostat is in an

area where air circulates around it freely.

2. Never install the thermostat on or near an outside wall.

3. Do not locate the thermostat near windows or doors, or in any

drafty area.

4. Don’t install the thermostat where it will be affected by “false”

heat sources (such as direct sunlight, a stove or any appli-
ance exhaust, steam lines, etc.).

5. Mount the thermostat on a post or a partioning wall, but be

sure that there are no pipes, duct work or heat sources in that
wall or directly behind it.

6. If the electrical conduit leads into a cooler or warmer room,

plug the hole around the wires with fire-resistant insulation to
prevent drafts.

If the thermostat is used with unit heaters, the following sugges-
tions for locating the thermostat may be helpful (see fig. 2).

1. Position A in fig. 2 is acceptable if the thermostat is close

enough to the unit heater so that the return air to the heater
flows over the thermostat.

2. Position  B is acceptable if it is not necessary to make

frequent adjustments of the dial setting.

3. Position C is acceptable if it is sufficiently far from the heater

that air flowing over the thermostat is not much above the
average room temperature.

4. Position D is not acceptable because the post may prevent

air from circulating over the thermostat.

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Concrete

Plaster/

Drywall

Junction Box

Themostat

Conduit
along wall

Conduit

inside wall

Floor

Return Air

Post

Ceiling

Unit

Partition wall
or post directly
behind unit

All wiring should be done in accordance with local and national electrical codes and ordinances.

Room

Thermostat

Manual

Switch

Line

Heating

Cooling

Fan or Water

Solenoid

R

B

W

Follow the wiring instructions provided by the heating/cooling
equipment manufacturer. If none are offered, a typical circuit
application is shown at right.

To set the thermostat, simply move the dial so that the indicating
line on the case points to the desired temperature setting on the
dial.

70

60

80

Indicating

Line