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4500 Thermostat Installation Instructions
3-4
If you are installing the 4500 in a heat only system, the setup will look like
Figure 4 below.
R
Heat (W)
Fan (G)
R
Heat (W)
Fan (G)
PREMISES
THERMOSTAT
4286
PHONE
MODULE
IN
OUT
W
G
4500
THERMOSTAT
68
5
3
HVAC
System
Figure 4. 4500 Thermostat with Heating System Only
Some heating systems, such as the forced-air type, have a fan (connections
are shown). Other heat-only systems may not include a fan, in which case
the fan connections are not used.
If you are installing the 4500 in a cooling only system, the setup will look like
Figure 5 below.
Rc
Cool (Y)
Fan (G)
Rc
Cool (Y)
Fan (G)
PREMISES
THERMOSTAT
4286
PHONE
MODULE
IN
OUT
YG
4500
THERMOSTAT
78
5
4
HVAC
System
Figure 5. 4500 Thermostat with Cooling System Only