COMPATIBILITY WITH SYSTEM TYPES
2-pipe fan coil system with water probe (optional) upstream/downstream of the valve
Y1
Y1
SW
SA
SA
SW
4-pipe fan coil system with hot water probe (optional) upstream/downstream of the valve
Y2
SWH
Y2
Y1
Y1
SWC
SA
SWH
SWC
2-pipe fan coil system with supplementary/replacement heater and
4-pipe fan coil system with supplementary heater and hot water
optional water probe
probe (optional) upstream of valve only
Y2
Y1
SWH
SA
Y1
SWC
RE
SW
RE
SA
SR
SR
Key
SA
ambient probe
SW
Water probe (if present)
SR
heater probe
Y1
solenoid valve
Y2
hot water solenoid valve (4 pipes)
FAN
fan with asynchronous or inverter motor
RE
heater (supplementary/replacement)
27