Chromalox WT-122 Installatie-instructies - Pagina 2

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Temp.

Range

Model

(˚F)

Contacts

WT-121

45-75

SPST

WT-122

45-75

DPST

General

Note: Type WT thermostats are designed for temperature

control service only. Because they do not fail safe, they

should not be used for temperature limiting duty.

Users should install adequate back-up controls and

safety devices with their electric heating equipment.

Where the consequences of failure may be severe,

back-up controls are essential. Although the safety

of the installation is the responsibility of the user,

Chromalox will be glad to make equipment recom-

mendations.

Not for use in hazardous environments as described

in the National Electrical Code. Failure to comply

can result in explosion or fire.

Installation

1. Cut lead wires protruding from outlet box approximately

4" from wall surface and strip end insulation 1/2".

2. Always test the heater circuit for electrical shorts before

connecting the thermostat.

3. Remove thermostat knob and front cover.

4. Using wire-nuts or other local code approved devices,

connect load and line wires to appropriate color coded

thermostat wires. (See wiring diagrams below.)

2.86"

(73)

4.72"

(110)

Front View

24V AC

120V AC

22 amps or

528 total

2640 total

watts

2.14"

(54)

Side View

Maximum Rating

208V AC

240V AC

22 amps or

4575 total

5280 total

watts

Thermostat Location

1. Mount in any standard electrical outlet box. Use of extra

deep box (3" x 2" x 31/2") makes for easier wiring.

2. Locate outlet box about 5' above floor on inside wall.

3. Box location should be representative of the area to be

controlled. Avoid locations that are subject to drafts or

false external heat (such as solar radiation, direct heat

from heaters, etc.). Insure that the wall selected is capped

to prevent drafts within the wall.

5. Mount the thermostat to the outlet box using the screws

provided. Take care not to push or damage the bimetal

sensing element during installation.

6. Replace the thermostat front cover and knob.

Any knob temperature setting below 50°F may re-

sult in freezing.

277V AC

Pilot Duty

18 amps or

125V AC (use with

5000 total

AC contactor)

watts