230V
0V
BOILER
Volt Free - Combination Boiler
230V230V
2 x CH Zones - Volt Free Combination Boiler
BOILER
OV - 230v
230V
230V
230V
0V System Boiler 1 x CH Zone and 1 x HW Zone
BOILER
OV
230V
0V
BOILER
Volt Free - Combination Boiler
2 x CH Zones - Volt Free Combination Boiler
230V
230V
230V
0V System Boiler 1 x CH Zone and 1 x HW Zone
BOILER
OV
230V
230V
BOILER
230V Switching - Combination Boiler
230V230V
230V Combination Boiler 2 x CH Zones -
Potential Volt Free Switching
BOILER
OV - 230v
230V
230V
230V
0V System Boiler 1 x CH Zone and 1 x HW Zone
BOILER
OV
04 iT500 Installer Manual
Two central heating zones.
iT300 Sensor required for this configuration.
A
C
+
One central heating zone only.
A
One central heating zone only.
B
B
3. WIRING SCHEMATICS FOR SYSTEM CONFIGURATIONS
C