JUMPER
WIRE
THERMOSTAT
Y | G | W RC | RH |
From heating system
CONNECT red jumper
wire (provided)
W | W |
NOTE
RED jumper wire (pro- vided with thermostat) must be connected be- tween thermostat's RH and RC terminals for pro- per thermostat operation with this system.
Cooling
System
Fan
Relay
Heating
System
SYSTEM
Hot
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24vAC |
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| 120vAC |
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Neutral
TRANSFORMER
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| RC |
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| G | G |
| RH | Y | Y |
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RH |
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| From fan relay |
From 24vAC |
| From cooling system | |
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transformer |
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Thermostat Terminal Connections | |||
Figure 7. Typical Wiring Diagram for Heat/Cool,
Y | G |
Cooling | Fan |
System | Relay |
W
Heating
System
THERMOSTAT
RC RH
SYSTEM
Hot
24vAC |
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| 120vAC | |
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Neutral
HEATING TRANSFORMER
Hot
24vAC |
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| 120vAC | |
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Neutral
COOLING TRANSFORMER
From 24vAC From heating system
cooling transformer |
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W | W | |
RC | RC | |
G | ||
G | ||
Y | ||
Y | ||
RH | ||
RH | From fan relay | |
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From cooling system | ||
From 24vAC |
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heating transformer |
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Thermostat Terminal Connections | ||
Figure 8. Typical Wiring Diagram for Heat/Cool,
5.Move subbase out of the way. Drill mounting holes.
6.Fasten subbase loosely to wall, as shown in fig. 3, using two mounting screws. Place a level against bottom of subbase, adjust until level, and then tighten screws. (Leveling is for appearance only and will not affect thermostat operation.) If you are using existing mounting holes, or if holes drilled are too large and do not allow you to tighten subbase snugly, use plastic expansion plugs to secure subbase.
7.Push excess wire into wall and plug hole with a fire- resistant material (such as fiberglass insulation) to prevent drafts from affecting thermostat operation.
To attach thermostat to subbase, line up the plastic snap guides at the bottom of the thermostat and the three connector pins on the thermostat with the connectors near the bottom left section of the subbase (when viewed from the front). Gently pivot the thermostat up until the six pin connectors and the plastic snaps lock into place (see fig. 9). Be gentle when attaching thermostat. If the thermostat does not seem to be attaching to the subbase easily, make sure that the connector pins and plastic snaps are properly aligned, and that excess wire is pushed into the wall. Damage to the thermostat may occur if force is used.
ATTACH THERMOSTAT TO SUBBASE
IT IS RECOMMENDED THAT YOU PROGRAM THE THERMOSTAT WITH BATTERIES INSTALLED BE- FORE ATTACHING ON SUBBASE (see OPERATION GUIDE for programming instructions).
!CAUTION
POWER TO THERMOSTAT MUST BE OFF BE- FORE ATTACHING THERMOSTAT TO WALL. FAILURE TO TURN OFF POWER BEFORE AT- TACHING THERMOSTAT MAY CAUSE EQUIP- MENT DAMAGE DUE TO RAPID COMPRESSOR CYCLING.
ENGAGE TWO LOWER GUIDES;
PIVOT UP
Figure 9. Attaching thermostat to subbase
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