36
46
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
3.4 HYDRAULIC DIAGRAM.
Key:
1 - Cycloidal filter unit
2 - Gas valve
3 - D.H.W. flow switch
4 - Flow limiter
5 - Gas nozzle
6 - Condensate drain trap
7 - DHW probe
8 - Fan
9 - Air intake pipe
10 - Positive (+) pressure point
11 - Venturi
12 - Flow probe
13 - Aqua Celeris device draining cock / tap
14 - Aqua Celeris Resistance
15 - Aqua Celeris
16 - System expansion vessel
17 - Aqua Celeris device air vent cock / tap
18 - Flue sample point (F)
19 - Air sample point (A)
20 - Flue probe
21 - Condensation module
22 - Burner
23 - Ignition/detection electrode
24 - Return probe
25 - Air vent valve
26 - Boiler pump
27 - Absolute pressure switch
28 - DHW heat exchanger
29 - System filling valve
30 - 3-way valve (motorised)
31 - By-pass
32 - Draining cock / tap
system
33 - 3 bar safety valve
34 - 3 bar safety valve drain fitting
signal
35 - Cut-off cocks
filter unit
G - Gas supply
AC - Domestic hot water outlet
AF - Domestic hot water inlet
SC - Condensate drain
M - System flow
R - System return
