9
1. Turn the system power OFF from the existing
thermostat. Turn the power to the HVAC
system OFF at the main power panel or at
the furnace.
2. Remove the existing thermostat cover to
access the wires from the wall.
(Some thermostats may have multiple covers, screws
or other locking devices that must be removed or
disengaged.)
3. Locate, but do not disconnect the wires.
(If wires are not visible, they may be connected to the
back of the wall plate. Some models may have doors
that open to expose the wires and mounting screws.)
uninSTalling ThE ExiSTing uniT
Summary of Contents for 44156
Page 2: ...2...
Page 8: ...8 Y RC G W Y RC G W...
Page 12: ...12 W R C Y G...
Page 14: ...14 W R C Y G...
Page 16: ...16 G RCRHY 0W B R C G Y1 Y 0 W B Y 1 Terminal Shield...
Page 20: ...20 1 2 Tab...
Page 22: ...22 reset...
Page 24: ...24 day time AM PM...
Page 26: ...26 AM HEAT 4 T...
Page 28: ...28 AM HEAT 2 TH...
Page 30: ...30 hold return system off heat cool HOLD...
Page 34: ...34 AM PM program hold return system off heat cool...
Page 36: ...36 AM PM HEAT COOL SA 2 1 3 4 SU M T W TH F program hold return system off heat cool...
Page 38: ...38 FILTER filter...
Page 40: ...40 HEAT COOL system off heat cool reset...
Page 42: ...42 PM COOL 4 M STAGE 1 STAGE 2...
Page 44: ...44 hold return...
Page 46: ...46...
Page 49: ...49 wiring Diagrams...
Page 50: ...50 wiring Diagrams CONT...
Page 51: ...51 wiring Diagrams CONT...