5.6 Connection with room thermostat mounted on- board
Heating go-ahead output (boiler-caldaia)
BOILER
free contact max 1A
Cooling go-ahead output (chiller)
CHILLER
free contact max 1A
SW2
Remote ON / OFF
H2
Water temperature probe (4T → heating)
2T → cooling / heating
5 - ELECTRICAL CONNECTIONS
H4
Water temperature probe (4T → cooling)
S1
Grill safety micro-switch
Y1
Water solenoid valve (4T → heating)
(2T → heating / cooling)
Y2
Water solenoid valve (4T → cooling)
4 tube : Y1 + Y2
2 tube : Y1
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