Williams 6257732 Bedienerhandbuch PDF herunterladen (Seite 11)

Thermostat Installation

1. If an old thermostat is being replaced and is in a

satisfactory location and the wiring appears to be

in good condition, use existing wiring. If in doubt, use

new wire.

2. If a new location is chosen or if this is a new installa-

tion, thermostat cable must first be run to the location

selected. All wiring must agree with local codes and

ordinances. These instructions cover bringing the wire

down from the attic but it can be run from a basement

or crawl space using similar methods.

3. Before drilling hole in wall at selected location, drive

a small finishing nail through the ceiling in the corner

of the wall and ceiling above the thermostat location.

Pull the nail out and push a small stiff wire through the

hole so it can be found in the attic. Drill a 1/2-inchhole

through the ceiling wall plate.

4. Probe for obstructions in the partition. Then drill a

1/2-inch hole through wall at selected location for

thermostat.

5. From the attic, feed the thermostat cable or a stiff wire

through wall until even with thermostat location.

6. Snag thermostat cable through hole and pull cable

through hole in wall so that 6 inches of cable protrudes.

7. Route cable to wall furnace.

ROUTE THERMOSTAT CABLE

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FINISH

NAIL 10

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MOUNTING THE THERMOSTAT

1. To remove thermostat cover, squeeze cover and pull

straight outward (see Fig. 27, page 18). Carefully

remove and discard the packing tab protecting the

switch contacts.

2. Connect thermostat wires to the terminal screws on the

thermostat base. Make sure wiring does not interfere

with thermostat operation.

3. Push any excess wire back through hole in wall and

plug hole with insulation to prevent drafts from affect-

ing thermostat operation.

4. Being sure to level thermostat for best appearance,

fasten thermostat base to wall through mounting holes

with screws provided.

5. Replace the thermostat cover.

THERMOSTAT HEAT ANTICIPATOR

SET THE THERMOSTAT HEAT ANTICIPATOR

A simple method of setting.the heat anticipator in a 24-volt

thermostat (without an A.C. ammeter) is to first read the

label on the gas control valve and match its rating.

Example: If the ampere draw for the valve is .5 amps,

set thermostat heat anticipator at the same

setting (.5).

ADJUST THERMOSTAT ANTICIPATOR

Refer to Fig. 16, Page 12.

Many factors affect this setting -- roomsize, lengthof ther-

mostat wire, thermostat location, etc. Additional small

adjustment to increase or decrease heatingcycles(4-6 per

hour typical) may be required. If an A.C. ammeter is

available, see instructions supplied with thermostat.

NOTE

For longer "ON" times move the anticipator

clockwise. For shorter "ON" times move the an-

ticipator counter clockwise.

NOTE

Use heavier wire size if more than 20 ft. of wire is

required.

NOTE

Refer to installation instructions packed in the ther-

mostat carton if you have any doubt about the above

procedures.

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