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GENERAL
mini HE --- Installation & Servicing
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7BOILERWATERCIRCUITDIAGRAM
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1 Domestic hot water (DHW) heat exchanger
2 Domestic hot water (DHW) flow switch
3 Domestic hot water (DHW) outlet pipe
4 Domestic cold water inlet cock
5 Three---way diverter valve
6 M ain circuit drainage cock
7 Central heating flow co ck
8 By --- pa ss v al ve
9 Central heating (CH) ret urn cock
10 3 bar pressure relief valve
11 Gas co ck
12 Expansion vessel
13 Gas valve inlet pressure tap
14 Modulating gas valve
15 B urner pressure tap
16 Flame detection electrode
17 Ignition electrodes
18 B urner
19 Combustion chamber
20 Primary heat exchanger
21 F an
22 Air pressure switch
23 Venturi device
24 Flue outlet pipe
25 Air intake pipe
26 Automatic air vent
27 Overheat thermostat
28 Pump
29 Pump vent plug
30 CH temperature probe
31 CH flow switch
32 DHW temperature probe
33 CH circuit temperature/pressure gauge
34 Recuperator
35 Flue temperature probe
36 Condensate trap
37 Condensate drain pipe