25
AVANTA 18v
System Only - Option 2
Typical “W” plan Heating and Priority DHW using 230v controls
V4044c
Diverting Valve
L641 Cylinder
Thermostat
2
T6360/T4360
Room Thermostat
91
0
8
7
4
35
6
12
Wiring
Centre
230v - 1 - 50
3 amp Switched Spur
L
N
E
3
1
C
1
2
Blue
G/Yellow
Brown
ON
OFF
ON
OFF
ST699 Control
L
N
DHW
HTG
CALL
CALL
Clock
'B' DHW
'A' HTG
AB
AOVW003
Remove exist links
Boiler
E
L
N
N
X6
230v
Power Supply
5
L
X2
3
4
2
1
4
N
L
X4
3
2
1
System Pump
Must be wired direct to boiler
E
Condensate
22mm Gas
22mm
Flow
22mm
Return
2 Channel
Time clock
230v Supply
Room Stat
DHW thermostat
Three way Diverting
valve - HTG or DHW
Wiring Centre
AOVS003
'B' DHW
'A' HTG
'AB'
Check valve may
be necessary