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Heat
28
Exchanger
Pump
Spark
12
Generator
Heat
28
Exchanger
Pump
DHW
27
Primary
Pump
Heat
Exchanger
28
Pump
Plate Heat
26
Exchanger
iHE
APPLIANCE COMPONENTS INTERNAL
LLH
LLH Air Vents
Sensor
Tank Drain Cock
20
Flue Sample
Point
DHW Secondary
Pumps
Isolation Cocks
29
34
Flue Temp
Sensor
Combustion
Fan
F
F F a
F a
G
Gas Valve
G G
G
Spark
Sp
Sp
Sp
Sp
S
S
S
S S p
S
Sp p
E
E
E l
El E
E
E
E
E
E
E
Electrode
E
E
E
E
I I
I
Ionisation
I
I I
I I
I
I
I
I
I
I
o
o
o
o
o o
o
o
o
o
o
o
o
o
o
n
n
n
n
n
n
n
n
n
Electrode
E E E l El
E
e
Air control
valve
DHW Pump
300ltr Tank
1
6
14
5
10
Fig 7.3
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