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5
SET HEAT ANTICIPATOR
Set anticipator to match the setting of your old thermostat you noted in Step 3, or, the
anticipator should be set to match the current rating stamped on your main heating
control. The heat anticipator is adjustable from 0.15 to 1.2 amps. Adjust the anticipa-
tor by rotating the contact arm (see fig. 5). The anticipator setting is indicated by the
numbers on the base that the pointer points to. If you are unsure where to set the
anticipator contact the heater manufacturer for a recommended setting.
Move the pointer counterclockwise to
lengthen heating system cycles; move
clockwise to shorten heating cycles.
Adjustments should not be greater than
1/2 marking at a time.
For millivolt operation, rotate contact arm
to Millivolt Link.
Snap on Cover: Carefully align the cover
with the base and snap the cover onto the
base.
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NEW THERMOSTAT OPERATION
Thermostat on Subbase. After power is turned on, use the system switch to select
either heating or cooling, or to turn the heating/cooling system off. Use the fan switch
to control fan operation. When the fan switch is in the AUTO position, the fan will
cycle with the heating or cooling system (the fan will not run if the system switch is
in the OFF position and the fan switch is in the AUTO position). When the fan switch
is in the ON position, the fan will run continuously, regardless of system switch posi-
tion (even if the system switch is set to OFF, the fan will run if the fan switch is in the
ON position).
Thermostat on wallplate. For heat only move the temperature lever to the highest
temperature. For cool only move the temperature lever to the lowest temperature.
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SPECIFICATIONS
ELECTRICAL DATA
Switch Rating .............................................
Heating .........................................................
Cooling .........................................................
Anticipator Rating:
Heating .........................................................
Cooling .........................................................
THERMAL DATA:
Temperature Range ...................................
Operating Humidity Range .......................
Rotate contact arm
to adjust heat anticipator
Arrow points to the
Millivolt Link
current rating of
the primary control
Figure 5. Anticipator adjustment
Figure 5. Anticipator adjustment
Figure 5. Anticipator adjustment
24 VAC (30 VAC max.)
0.15 to 1.2 Amps
0 to 1.5 Amps
Adjustable from 0.15 to 1.2 Amps
Fixed
50°F to 90°F (10°C to 32°C)
0 – 90% noncondensing
RH
W
Hot
120 VAC
24 VAC
Neutral
TRANSFORMER
Figure 2. Typical wiring for single transformer
Figure 2. Typical wiring for single transformer heating/cooling system
heating/cooling system
RH
W
TRANSFORMER
Heat
Hot
Relay
120 VAC
24 VAC
Neutral
Figure 3. Typical wiring for two-transformer
Figure 3. Typical wiring for two-transformer heating/cooling system
heating/cooling system
Factory-Installed Jumper
RC
G
RH
TRANSFORMER
Fan
Hot
Relay
120 VAC
24 VAC
Neutral
Terminal energized
*
in cooling
Figure 4. Typical wiring for single transformer,
Figure 4. Typical wiring for single transformer, single stage heat pump system
single stage heat pump system
Hot
120 VAC
Neutral
TRANSFORMER
Figure 5. Typical wiring for single transformer heating system
Hot
120 VAC
Neutral
TRANSFORMER
Figure 6. Typical wiring for single transformer cooling system
6
MV
B
O
6
4
5
Zone
Valve
1
2
Figure 7. Typical wiring diagram heat only, 3-wire zone valve systems
B
O
Y
G
RC
A
Compressor
Fan
Relay
Relay
B
A
O
Y
G
RC
TRANSFORMER
Compressor
Fan
Hot
Relay
Relay
24 VAC
120 VAC
Neutral
Field-Installed Jumper
O
W
Y
B
A
Compressor
*
* *
Relay
Terminal energized
* *
in heating
R
W
Y
Heat
Relay
24 VAC
R
W
Y
Compressor
Relay
24 VAC
THERMOSTAT
Y
G
W
RC
RH
SYSTEM
Hot
24 VAC
120 VAC
Neutral
TRANSFORMER
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