Ferroli OPTIMAX HE PLUS 25 S Instructions For Use, Installation And Maintenance page 15

OPTIMAX HE PLUS 25 S
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.
OPTIMAX "S" Plan
Remove
Link
between
terminals 5-6
PROGRAMMER
DHW ON
NEUTRAL
OPTIMAX
FERROLI
BOILER
Junction Box
6 5 4 3 2 1
L N E L
Terminal 5 - SWITCH LINE
CH ON
LIVE
BROWN BLUE
CH
zone
valve
DHW
zone
valve
GREY ORANGE
Cod. 3540R540 - 02/2009 (Rev. 00)
Pipe layout
Auto air vent
D.H.W.
Zone Valve
C.H.
Zone Valve
Wiring diagram
1 2 3 4 5 6 7 8 9 10
Fig. 15a
N
E
230 Vac
L
Room Thermostat
Cylinder Thermostat
Fig. 15b
15