Application Brochure

© 2013 553_A - 04/13
2 of 16
A Watts Water Technologies Company
1 Heat / 1 Cool / 1 Fan / Relative Humidity
553_A-1
Description
The 553 operates a one-stage furnace for heating and operates a one-stage air
conditioner for cooling. The fan operates with the heating and cooling or independently
for ventilation. The thermostat can operate an optional humidifier or dehumidifier to
maintain desired relative humidity settings.
Setup Menu Essential
Setting
Y Relay AC
W Term FURN
ACC Relay HUM
G / O Relay FAN
ACC
Y
G
W
Outdoor
Sensor
070
553
Air Conditioner
Humidifier
Furnace
and Fan
*
Alternate humidifier locations