Heatrae Sadia Megalife CLV190 Installation Manual page 10

Fig. 06: Schematic wiring diagram - Basic 2 x 2 port valve system
NOTES: Control terminal numbering may differ from those shown.
Refer to instructions with controls selected.
A double pole isolating switch must be installed in the mains supply.
All earth connections must be connected back to the mains earth supply.
Fig. 07: Schematic Wiring Diagram - 2 port valve in conjunction with 3 port mid position valve system. (Y plan).
1
L
NOTES: Control terminal numbering may differ from those shown.
Refer to instructions with controls selected.
A double pole isolating switch must be installed in the mains supply.
All earth connections must be connected back to the mains earth supply.
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Cylinder terminal block
1 2 3
Zone valve (HTG)
G Br Bl 0
GY
1 2 3
(Supply)
L N
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
1 2 3
L N
HTG DHW
ON ON
Programmer
Cylinder terminal block
1 2 3
3 Port Zone valve
G W Bl 0
GY
2 3
(Supply)
L N
3 4 5 6 7 8 9 10
1 2
1 2 3 4 5 6 7 8 9 10
2 3
N 1 3 2
HTG DHW DHW
ON ON OFF
Programmer Room stat
Megalife Product Guide
3
Room stat Zone valve (DHW)
G Br Bl
1 3 2
2 1
Junction box
2 3
L N
N
Boiler
3
Zone valve (DHW)
(supplied)
G Br Bl
1
Junction box
2 3
2
L N
N
Boiler
0
2
L
3
Pump
0
2
L
3
Pump
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