White Rodgers 179 Bedienungsanleitung

If in doubt about whether your wiring is millivolt, line, or low

voltage, have it inspected by a qualified heating and air condi-

tioning contractor or electrician.

Do not exceed the specification ratings.

Allwiringmustconformtolocalandnationalelectricalcodesand

ordinances.

This control is a precision instrument, and should be handled

carefully.Roughhandlingordistortingcomponentscouldcause

the control to malfunction.

This control has been accurately calibrated at the factory. Any

attempt to calibrate this control will void the White-Rodgers

warranty.

Toprevent electricalshockand/orequipmentdamage

disconnect electric power to system at main fuse or

circuit breaker box until installation is complete.

Label all wires prior to disconnection when servicing

controls. Wiring errors can cause improper and dan-

gerous operation.

Following installation or replacement, follow appli-

ance manufacturer’s recommended installation and/

or service instructions to insure proper operation.

Do not use on circuits exceeding specified voltage.

Higher voltage will damage control and could cause

shock or fire hazard.

These room thermostats are specially designed to control

combination heating and cooling equipment that operates on

line voltage.

These controls are suitable for fans or water solenoids on

heating/cooling convectors or any similar application that re-

quires a heavy duty room thermostat with single pole, double

throw (SPDT) switch action.

PRECAUTIONS

NOTE

CAUTION

WARNING

Printed in U.S.A.

Type 179

SPDT Heating/Cooling Room Thermostat

FAILURETOREADANDFOLLOWALLINSTRUCTIONSCAREFULLYBEFORE

INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL

INJURY AND/OR PROPERTY DAMAGE.

DESCRIPTION

Operator: Save these instructions for future use!

INSTALLATION INSTRUCTIONS

WHITE-RODGERS DIVISION

EMERSON ELECTRIC CO.

9797 REAVIS ROAD

ST. LOUIS, MISSOURI 63123-5398

WHITE-RODGERS

PART NO. 37-0885B

Replaces 37-0885A

0017

SPECIFICATIONS

Blue

Red

Common Open on rise

of temperature

Close on rise

of temperature

White

These controls have a single pole, double throw (SPDT) snap

action switch. The top left-hand terminal (red) is the common

terminal. The top right-hand terminal (blue) has open-on-rise

switch action. The bottom center terminal (white) has close-on-

rise switch action.

A.C. Motor Rating

Electrical Rating

120 VAC 240 VAC

Full Load Current

Locked Rotor Current

Non-Inductive

7.4 A

44.5 A

24 A

3.7 A

22.2 A

20 A

THERMOSTAT LOCATION

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. Donotlocatethethermostatnearwindowsordoors,orinany

drafty area.

4. Don’tinstallthethermostatwhereitwillbeaffectedby“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

surethattherearenopipes,ductworkorheatsourcesinthat

wall or directly behind it.

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

plugtheholearoundthewireswithfire-resistantinsulationto

prevent drafts.

Ifthethermostatisused withunitheaters,thefollowing sugges-

tions for locating the thermostat may be helpful (see fig. 2).

1. Position Ain 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 Bis acceptable if it is not necessary to make

frequent adjustments of the dial setting.

3. PositionCis acceptable ifit issufficientlyfar fromtheheater

that air flowing over the thermostat is not much above the

average room temperature.

4. PositionDis not acceptable because thepost may prevent

air from circulating over the thermostat.

WIRING







,





Concrete Plaster/

Drywall

Junction Box

Themostat

Conduit

along wall

Conduit

inside wall

WALL INSTALLATION

The mounting plate for this thermostat has two

holes 3

”apart for attaching the control on a

standard switch box.

Figure 1

Floor

Return Air

DC A

Post

Ceiling

Unit Partition wall

or post directly

behind unit

Figure 2

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

Follow the wiring instructions provided by the heating/cooling

equipment manufacturer. If none are offered, a typical circuit

application is shown at right.

Tosetthethermostat,simplymovethedialsothattheindicating

lineon thecase pointsto thedesired temperaturesettingonthe

dial.

OPERATION

Indicating

Line

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