CALEFFI Z-one ZVR10 Series Manual page 18

A3 - Single master thermostat, panel radiators with TRVs, variable speed pump
buffer tank
Hydronic diagram is for illustration purposes only, some components have been removed for simplicity.
TRV
thermostatic!
radiator valves!
(TRV) on each!
radiator
TRV
transformer
N L L
N
L
TRV
TRV
TRV
TRV
R W C
T T com
power
zone
CalefÞ!
single zone relay
RELAY 1 RELAY 2
C N/O N/C C N/O N/C
T
T
10