iQe COMFORT 30, Installation And Servicing Instructions

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1.4 FUNCTIONAL DIAGRAM (fig. 2)
Fig. 2
8
KEY
1 Fan
2 Limit stat
3 Primary exchanger
4 C.H. sensor (SM)
5 Gas valve
6 D.H.W. exchanger
8 Diverter valve
9 Safety thermostat
10 Pump with air release vent
11 D.H.W. flow switch
12 Water inlet filter
14 Pressure relief valve
15 Water pressure switch
16 Automatic bypass
17 Drain vent
18 Expansion vessel
19 Condensate drain trap
21 D.H.W. isolation valve
22 Gas isolation valve
23 C.H. flow isolation valve
24 C.H. return isolation valve
25 D.H.W. sensor (SS)
CONNECTIONS
R C.H. return
M C.H. flow
G Gas connection
E D.H.W. inlet
U D.H.W. outlet
S3 Condensation outlet
S Safety valve discharge