Install Instructions

© 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