Potterton iHE 100 Installation & Servicing Instructions Manual page 43

4.4 APPLIANCE COMPONENTS IDENTIFICATION (CONTINUED)
Heat
28
exchanger
pump
Spark
12
generator
Heat
28
exchanger
pump
DHW
27
primary
pump
Heat
exchanger
28
pump
26
Plate Heat
Exchanger
iHE
20
LLH
sensor
LLH air vents
Tank drain cock
1
Flue sample
Flue temp
sensor point
DHW secondary DHW pump
pumps isolation cocks
29
41
Combustion
6
fan
14
Gas valve
Non-return
39
valve
Spark elec-
5
trode
Ionisation
10
electrode
Control
20
sensor s s s s e
Air control fl ap
assembly
300ltr tank
Fig 7.3
GB/IE