© 2013
553_D - 04/13
6 of 48
A Watts Water Technologies Company
User Test Sequence
Heat Test
Cool Test
Step
Relay(s) Closed
Step
Relay(s) Closed
O RELAY ON
Rc to G/O
O RELAY OFF
Rc to G/O
B RELAY OFF
Rc to G/O
B RELAY ON
Rc to G/O
FAN ON
Rc to G/O
(conventional)
Rc to ACC
(heat pump)
FAN ON
Rc to G/O
(conventional)
Rc to ACC
(heat pump)
Y HEAT ON
Rc to Y
Y COOL ON
Rc to Y
W2 HEAT ON
Rc to ACC
HUMIDIFY ON
Rc to ACC
W HEAT
Rh to W
DEHUMIDIFY ON
Rc to ACC
HUMIDIFY ON
Rc to ACC
(heat and cool)
Rc to Y
(two-stage heat)
HRV ON
Rc to ACC
DEHUMIDIFY ON
Rc to ACC
HRV ON
Rc to ACC
*availability of test step and additional relay closures based upon Setup menu settings.
Mounting the Thermostat
Push the thermostat front onto the
thermostat base. Installation is now
complete.
Thermostat
Front
Push
Thermostat
Base
