Instruction Manual

0020085231_02 - 05/10 - Glow-worm
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2.5 Hydraulic schematic
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Key
1 Gas isolating valve
2 Heatingowisolatingvalve
3 Heating safety valve
4 Filteroncoldwaterinlet
5 By-pass
6 DHWowsensor
7 Domestic plate to plate heat exchanger
8 Heatinglter
9 Heating return thermistor
10 Condensate trap
11 Ignition and control electrode
12 Burner
13 Main heat exchanger
14 Thermal fuse
15 Flue outlet
16 Silencer
17 Heating expansion vessel
18 Fan
19 Gas control valve
20 Ignition module
21 Heatingowthermistor
22 Air vent
23 Pump
24 Threewayvalve
25 Water pressure sensor
26 Filling taps
27 Heating return isolating valve
28 Domesticcoldwaterisolatingvalve
A Heatingow
B Pipe for heating safety valve
C Domestichotwateroutlet
D Gas
E Coldwaterinlet
F Heating return
G Condensate drain
INTRODUCTION