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Figure 13 - 2 port valve in conjunction with a 3 port mid-position valve system ("Y" Plan)
KEY
Bl
BLUE
Br
BROWN
G
GREY
O
ORANGE
GY
GREEN/YELLOW
DHW
DOMESTIC HOT WATER
HTG
HEATING
L
N
1
ROOM STAT
NOTES:
1. A DOUBLE POLE ISOLATING SWITCH MUST BE INSTALLED IN THE MAINS SUPPLY.
2. ALL EARTH CONNECTIONS MUST BE LINKED BACK TO THE MAINS EARTH SUPPLY.
3. ASSUMES BASIC BOILER WITH EXTERNAL PUMP.
4. USE COPPER LINKS SUPPLIED TO MAKE CONNECTIONS BETWEEN TERMINALS.
5. DO NOT MOUNT WIRING CENTRE ON CYLINDER.
6. THE ABOVE DIAGRAM IS FOR GUIDANCE ONLY, HEATRAE SADIA ACCEPT NO LIABILITY FOR ANY LOSS OR DAMAGE ARISING FROM ANY ERRORS OR OMISSIONS.
THAT MAY BE INADVERTENTLY CONTAINED WITHIN THIS DIAGRAM. THE VARIOUS EQUIPMENT MANUFACTURERS SHOULD BE CONSULTED TO CONFIRM THE
CORRECT OPERATION OF THEIR PRODUCTS WITHIN THE SYSTEM.
Figure 14 - 2 x 2 port valve system ("S"Plan)
KEY
Bl
BLUE
Br
BROWN
G
GREY
O
ORANGE
GY
GREEN/YELLOW
DHW
DOMESTIC HOT WATER
HTG
HEATING
L
N
NOTES:
1. A DOUBLE POLE ISOLATING SWITCH MUST BE INSTALLED IN THE MAINS SUPPLY.
2. ALL EARTH CONNECTIONS MUST BE LINKED BACK TO THE MAINS EARTH SUPPLY.
3. USE COPPER LINKS SUPPLIED TO MAKE CONNECTIONS BETWEEN TERMINALS.
4. DO NOT MOUNT WIRING CENTRE ON CYLINDER.
5. THE ABOVE DIAGRAM IS FOR GUIDANCE ONLY, HEATRAE SADIA ACCEPT NO LIABILITY FOR ANY LOSS OR DAMAGE ARISING FROM ANY ERRORS OR OMISSIONS.
THAT MAY BE INADVERTENTLY CONTAINED WITHIN THIS DIAGRAM. THE VARIOUS EQUIPMENT MANUFACTURERS SHOULD BE CONSULTED TO CONFIRM THE
CORRECT OPERATION OF THEIR PRODUCTS WITHIN THE SYSTEM.
MEGAFLO ECO INDIRECT
THERMAL CONTROLS
PROGRAMMER
(SUPPLIED FITTED)
L
N
HTG
DHW
DHW
1
ON
ON
OFF
2
3
4
5
6
7
1
8
Bl W G
3
2
3-PORT MID POSITION VALVE
PROGRAMMER
L
N
HTG
DHW
ON
ON
1
2
3
4
5
6
1
3
2
ROOM STAT
MEGAFLO ECO (DHW) 2-PORT
VALVE (SUPPLIED)
Bl Br G O GY
2
3
WIRING CENTRE
9
11 12 13 14 15 16
10
O GY
N
L
N
BOILER
MEGAFLO ECO INDIRECT
MEGAFLO ECO (DHW)
THERMAL CONTROLS
(SUPPLIED FITTED)
1
2
3
Bl
7
8
9 10 11 12 13 14 15 16
Bl
Br
G
O
GY
N
L
ZONE VALVE (HTG)
BOILER
Unvented Hot Water Cylinder
(SUPPLIED)
L
PUMP
ZONE VALVE
(SUPPLIED)
Br
G
O
GY
WIRING CENTRE
(SUPPLIED)
N
L
PUMP
21
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