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SPECIFICATIONS

ELECTRICAL DATA
Electrical Rating:

17 to 30 VAC, 50/60 Hz.
0.05 to 1.5 Amps
1.5 Amps Maximum Total Load (All terminals

combined)

Anticipation:

Heating 2 to 40
Cooling 4 to 40

THERMAL DATA
Setpoint Temperature Range:

40

°

F to 99

°

F (4

°

C to 37

°

C)

Operating Ambient Temperature Range:

32

°

F to 105

°

F

Operating Humidity Range:

0 to 90% RH (non-condensing)

Shipping Temperature Range:

-40

°

F to 150

°

F

APPLICATIONS

For use with:

• Standard heat/cool or heat-only systems
• Three-wire zone valve systems
• Millivolt systems
• Electric heat systems
• Gas or oil fired systems
• Gas systems with intermittent ignition devices

(I.I.D.) and/or vent dampers

Do not use with:

• Multi-stage systems
• Heat pump systems
• Systems exceeding 30 VAC and 1.5 Amps

ACCESSORIES

Remote Sense Kit W. R. Part No. F145-1049
Thermostat Guard W. R. Part No. F29-0198 (clear)

or F29-0238 (opaque)

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Reference Values

INSTALLATION

NEW INSTALLATION

You should program the thermostat with batteries
installed before attaching on subbase. See OPERA-
TION GUIDE for programming instructions.

SELECT THERMOSTAT LOCATION

Proper location insures that the thermostat will provide a
comfortable building temperature. Observe the following
general rules when selecting a location:

1.

Locate thermostat about 5 ft. above the floor.

2.

Install thermostat on a partitioning wall, not on an
outside wall.

3.

Never expose thermostat to direct light from lamps,
sun, fireplaces or any temperature radiating equip-
ment.

4.

Avoid locations close to windows, adjoining outside
walls, or doors that lead outside.

5.

Avoid locations close to air registers or in the direct
path of air 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 thermostat in a room that normally
warmer or cooler than the rest of the building.

8.

Avoid locations with poor air circulation, such as
behind doors or in alcoves.

ROUTE WIRES TO LOCATION

All wiring must conform with local and national electrical
codes and ordinances.

1.

Probe for obstructions in partition before drilling 

1

2

hole in wall at selected location. Take up quarter
round and drill a small guide hole for sighting (see
fig. 1). From basement, drill 

3

4

” hole in partition

floor next to guide hole. In buildings without base-
ments, drill 

1

2

” hole through ceiling and into parti-

tion from above.

2.

Through this hole drop a light chain, or 6” chain
attached to a strong cord. Snag cord in basement with
hooked wire. In buildings without basements, drop
cord through hole in ceiling and down partitioning;
snag cord at the thermostat location.

3.

Attach thermostat wire to cord and pull wire through
hole in wall so that 6” of wire protrudes.

NOTE

Approximately

5 feet from floor

1

2

” hole for

thermostat wire

Stout cord with 6”

chain attached

Baseboard

strip moulding

1

4

” guide hole

for sighting

Quarter round

removed

3

4

” hole in floor of partition

Hooked wire for snagging chain

Figure 1. Routing thermostat wires

Summary of Contents for 1F90-71

Page 1: ...findoubtaboutwhetheryourwiringismillivolt line orlow voltage have it inspected by a qualified heating and air conditioning contractor electrician or someone familiar with basic electricity and wiring...

Page 2: ...light from lamps sun fireplaces or any temperature radiating equip ment 4 Avoid locations close to windows adjoining outside walls or doors that lead outside 5 Avoid locations close to air registers...

Page 3: ...abels have both the old terminal markings and the new terminal identification Discard any unused labels PULL AT LEAST SIX INCHES OF WIRE OUT OF THE WALL WHEN YOU DISCONNECT IT DO NOT ALLOW THE WIRES T...

Page 4: ...20 VAC Hot Neutral THERMOSTAT SYSTEM G W Figure 5 Typical wiring diagram for heat only 3 wire single transformer systems TRANSFORMER 6 RC Fan Relay Heating System JUMPER WIRE G RC 6 MV Y W RH W RH The...

Page 5: ...nnections From fan relay W From millivolt system MV Cooling System Fan Relay 24 VAC 120 VAC Hot Neutral TRANSFORMER RC G Y From cooling system From 24 VAC transformer 4 Place subbase over hole in wall...

Page 6: ...hat excess wire is pushed into the wall Damage to the thermostat may occur if force is used CAUTION OPERATION SYSTEM CONFIGURATION A SET GROUP A OPTION SWITCHES DO NOT REMOVE THE AA BATTERIES WHEN CHA...

Page 7: ...ure to light it 2 Press FAN SWITCH until FAN ON is displayed The blower should begin to operate this will work only on sys tems with a G terminal Onthree wireheatonlysystems oronfour wireheat cool sys...

Page 8: ...ressor lockout feature during testing If the thermostat display is operating properly but the cooling system does not operate when the above steps are performed the red jumper wire provided with therm...

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