
20
10
16
L
EGEND
:
1.
Fan
2.
“Twin-pass” Heat Exchanger
3.
Domestic Hot Water Temperature Probe
4.
Burner
5.
Detection Electrode
6.
Ignition Electrodes
7.
Gas Valve
8.
Pump pressure switch
9.
Safety Valve
10. D.H.W. inlet filter
11. D.H.W. Flow Switch
12. Automatic By-pass
13. Pressure Gauge
14. Circulation Pump with Automatic Air Release Valve
15. Overheat Thermostat
16. Main Circuit Temperature Probe
17. Expansion Vessel
18. Air Pressure Switch
A. Central Heating Flow
B. Domestic Hot Water Outlet
C. Gas Inlet
D. Domestic Cold Water Inlet
E. Central Heating Return
2.14
W
ATER
C
IRCUIT
D
IAGRAM
F
IG
. 2.23
SI016C
Summary of Contents for MICROCOMBI 23 MFFI
Page 45: ...45...
Page 46: ...46...
Page 47: ...47...
Page 48: ...48...
Page 49: ...49 8 SHORT SPARE PARTS LIST microCombi 23 27 MFFI...
Page 51: ...51 NOTES...