SecureCom Smart Z-Wave Thermostat Installation Guide
9
Heat Pump HVAC System Connections
NOTE:
For typical connections to a Heat Pump HVAC system, refer to the diagram on Page 3 .
The terminals on the back panel have two sets of labels . The lower label shows
HEAT PUMP
HVAC
terminal connections . The upper label shows the
STANDARD HVAC
terminal connections .
Figure 9 . Heat Pump HVAC System Terminal Block Labeling
Figure 10 . Heat Pump HVAC System Thermostat Terminal Block Connections
Connect the wires from the HVAC system to the corresponding terminals on the thermostat back
terminal block . Use the table below as a guideline for connecting the wires .
Wire
Terminal
Y
Connect to the Y1 terminal
G
Connect to the G terminal
R
Connect to either R terminal
C
Connect to the C terminal . The C wire (24VAC common) Heat Pump systems
typically have the C wire connected to the thermostat . If there is no C wire,
batteries MUST be installed
W
Connect to the W1 terminal
O or B
Connect to the O terminal . Heat Pump setup must set changeover valve to
correct O or B setting (See page 13) .
NOTES:
Ensure that the appropriate wires are screwed into the terminal blocks firmly.
Gently pull on the wires to confirm the connection.
Push
all excess wiring back into the wall opening .
Y2 Y1 G RC C
Y2 Y1 G R C R W1 O Heat Pump
HEAT PUMP SYSTEM
TERMINAL WIRING
LABELS
RH W1W2 Standard
Y2
Y1
G
RC
C
RH
W1
W2
O or B
W
C
G
Y
STANDARD
Y2
Y1
G
R
C
R
W1
O
HEAT PUMP
(STICKER LABELED WIRES)
REFERENCE
HEAT PUMP
TERMINALS
R
CONNECT IF 2 STAGE SYSTEM