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MAINTENANCE GUIDE
3.11 Secondary heat exchanger
Tools
TIME
10 min
Drain primary and domestic hot water circuits. Remove the two
screws and remove the heat exchanger
1
2
3.9 LEFT HAND HYDRAULIC BLOCK ASSEMBLY
Legend:
1 - Left hand hydraulic block
2 - By-pass assembly
3 - Safety valve
4 - Central heating ow
5 - Domestic hot water outlet