Sinclair SWC-86A User And Installation Manual page 21

Two-pipe cooling/cooling and
heating (Networked)
L Hf Mf Lf V1 V2 N
Fan
Normally
open valve
Four-pipe(Networked)
L Hf Mf Lf V1
Fan Valve
Cooling Heating
Two-pipe heating + Auxiliary electric heater
Two-pipe cooling + Auxiliary electric heater
Two-pipe cooling and heating + Auxiliary
electric heater (Networked)
L Hf Mf Lf
Valve
N
AC220V
L
V2 N
Valve
N
AC220V
L
18
V1 V2 N
Fan Valve Valve
Normally Auxiliary
close electric
valve heater
N
AC220V
L