3
CHECK
AND MAINTENANCE.
3.1 HYDRAULIC DIAGRAM.
Key:
1 - Flue hood
2 - Domestic hot water heat exchanger
3 - Burner
4 - Valve/burner pipe
5 - NTC probe (cold water intake)
6 - Flow regulator
7 - Flow meter
8 - Gas valve
9 - NTC probe (hot water outlet)
10 - Nozzle manifold unit
11 - Limit thermostat
12 - Sealed chamber
13 - Fan
AC - Domestic hot water outlet
AF - Domestic cold water inlet
G - Gas supply
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