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Central heating Demand
The heat demand can be controlled by the room thermostat (terminal 5-6) or by a switch line 230 V
(terminal 5).
Standard Systems
For a general pipe layout and wiring diagram on the "S" and "Y" plan systems please see fig.
15a, 15b, and 16a, 16b.
FERtech "S" Plan
Pipe layout
Remove
Link
between
terminals 5-6
16
Wiring diagram
Cod. 3540U431 - 11/2009 (Rev. 00)
FERtech 25 OV
Fig. 15a
Fig. 15b
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