Installation manual

24
BY PASS
I
II
III
CONDENSA 5.32
T A
AMB.
M1
M2 M3
V1 V2 V3
TA1 TA2 TA3
N L
N L N L
220/240 V. 220/240 V. 220/240 V.
2.14 Zone system
In the hypothesis of a system supplied by
several zone valves, they are supposed to be
connected correctly to avoid the boiler pump
functioning when all valves are closed.
The following diagram shows how to connect
them.
Before connecting, check that the ends of the
two wires from the room thermostat are not alive.
Diagram available also with a remote control
(optional) after configuring the boiler control
board as instructions (page. 15)
WARNING: The T-A terminals lead to a low tension boiler circuit. Connect only after
careful cleaning.
LEGEND
M1M2M3 Valve switch
V1V2V3 Zone valve
Ta1Ta2Ta3 Room thermostats of the zones
2.15 Boiler safety valve.
The boiler safety valve is calibrated at 3 bar as maximum pressure.
The valve drain must be conveyed to the drainage system.
2.16 Boiler draining.
Turn the power supply off. Intercept the cold water supply. Carefully perform the drainage
(19 fig. 1).
To refill, please see the relevant paragraph.