66
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3.4 HYDRAULIC DIAGRAM
54
Key (Fig. 54):
1 - 3-bar safety valve
2 - Condensate drain trap
3 - Gas valve
4 - Gas valve outlet pressure point (P3)
5 - Liquid phase detection probe
6 - System draining cock
7 - System pressure switch
8 - System expansion vessel
9 - Heat generator circuit circulator
10 - Air vent valve
11 - One-way valve
12 - Water - gas plate exchanger
13 - Fan
14 - Air/gas Venturi manifold
15 - Gas nozzle
16 - Detection electrode
17 - Burner
18 - Flue gas thermofuse
19 - Air intake pipe
20 - Manual air vent valve
21 - Heat exchanger safety thermofuse
22 - Air sample point
23 - Flue sample point
24 - Gas ΔP pressure point
25 - Flue hood
26 - Safety thermostat
27 - Heat generator ow probe
28 - Heat generator return probe
29 - Ignition electrodes
30 - Venturi negative signal (P2)
31 - Venturi positive sign (P1)
32 - Air vent valve
33 - One-way valve
34 - System ow-meter
3 5 - H e a t p u m p r e t u r n p r o b e
36 - Heat pump three-way valve
37 - Heat pump ow probe
38 - Heat pump circuit circulator
39 - Heat generator three-way valve
40 - System lling cock
41 - System lling
42 - System shut-o cock
43 - System shut-o cock with lter
G - Gas supply
SC - Condensate drain
LP - Chiller line - liquid phase
GP - Chiller line - gaseous phase
RU - Storage tank unit return
MU - Storage tank unit ow
RR - System lling
R - System return
M - System ow
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