9
E
nglish
System with 2 pipes, with water sensor
SW Water temperature sensor
VCF
Solenoid valve (Heating / Cooling)
VC
Solenoid valve (Heating)
VF
Solenoid valve (Cooling)
SA Room temperature sensor
V3,V2,V1
Maximum, Average or Minimum fan speed
RX Electric
heater
CONFIGURATIONS FOR SYSTEMS WITH VEC
System with 2 pipes, without water sensor
System with 4 pipes, with water sensor
System with 4 pipes, without water sensor
Key: