Baxi 300i Manual page 21

Figure 14: Wiring schematic - 2 x 2 Port valve heating system
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.
Figure 15: Wiring schematic - 2 Port valve in conjunction with 3 port mid-position valve heating system
KEY
Bl BLUE
Br BROWN
G GREY
O ORANGE
GY GREEN/YELLOW
DHW DOMESTIC HOT WATER
HTG HEATING
W WHITE
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. 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, BAXI 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.
Programmer
L N
HTG
ON
1 2 3 4
1 3 2
Room stat
Programmer
L N
HTG
ON
2 3 4
1
1 3 2
Room sta
Megaflo indirect
thermal controls
(Supplied fitted)
DHW 1 2 3
ON
5 6 7 8 9 10 11 12 13 14 15 16
Bl Br G O
Zone valve (HTG)
Indirect
thermal controls
(Supplied fitted)
1 2 3
DHW DHW
ON OFF
5 6 7 9 10 11 12 13 14 15 16
8
Bl W G O
3-Port mid position valve
Megaflo (DHW)
zone valve
(Supplied)
Bl Br
GY N L
Boiler
(DHW) 2-Port
valve (Supplied)
Bl Br G
GY N L
Boiler
G O GY
Wiring centre
(Supplied)
N L
Pump
O GY
Wiring centre
(Supplied)
N L
Pump
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