Application Brochure

© 2013 553_A - 04/13
8 of 16
A Watts Water Technologies Company
2 Heat / 1 Cool / 1 Fan
553_A-4
Description
The 553 operates a radiant floor as the first stage of heat and a hydronic fan coil as
the second stage of heat. An air conditioner provides cooling. The fan operates with
the heating and cooling or independently for ventilation.
Setup Menu Essential
Setting
Y Relay AC
W Term HRF
ACC Relay W2
W2 Term COIL
G / O Relay FAN
ACC
Y
G
W
Outdoor
Sensor
070
553
Air Conditioner
Fan Coil
Fan
Boiler
Radiant Floor
Wiring
Center
House
Control