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Optimax 25 OV
Optimax "Y" Plan
Pipe layout
*Note: cold feed and expansion
Wiring diagram
8
7
PROGRAMMER
NEUTRAL
LIVE
CH ON
DHW ON
DHW OFF
3 WAY ZONE VALVE
BLUE
WHITE
GREY
ORANGE
A.A.V
A.A.V
OPTIMAX
FERROLI
BOILER
not shown for clarity
(see fig. 5)
Automatic
(mimimum flow of 6LTR/min.)
Junction Box
6
5
4
3
2
1
L
N
L
T erminal 4
SWITCH LINE
1 2 3 4 5 6 7 8 9 10
Remove
connection
between
terminals 4-5
Auto air vent
Balancing
valve
bypass
Honeywell V4073H mid position
The heating system must have an automatic
bypass capable of
passing 6 litres/minute
fi g. 7a
N
E
L
240 Volt A/C
fused at 3 amps
Room Thermostat
2
C
1
Cylinder Thermostat
fi g. 7b
15
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