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11
3-1
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
3
CHECKS AND MAINTE-
NANCE
3.1 HYDRAULIC DIAGRAM.
Key:
1 - Overheating safety thermostat
2 - Valve/burner pipe pressure point
3 - Valve intake diaphragm
4 - Connection pipe pressure point
5 - Chimney safety thermostat
6 - Fumes hood
7 - DHW heat exchanger
8 - Pilot group
9 - Burner
10 - Water/gas valve
AC - Domestic hot water outlet
AF - Domestic cold water inlet
G - Gas supply