6.4
Draining the installation
A
Drain cock
1. Turn off the domestic cold water inlet.
2. Open the drainage valve (A).
3. Open a hot water tap to completely drain the installation.
6.5
Specific maintenance operations
The DHW tank does not need to be drained to perform
these operations.
Only concerns gas-fired floor-standing condensing boilers.
If the installation is fitted with a DHW expansion vessel, proceed as
follows to disconnect it.
1.
Remove the DHW expansion vessel.
2. Uncrew the snap coupling.
C003499-B
A
1
2
3
3
C003753-A
160 SL
6. Checking and maintenance
15/03/2012 - 300026901-001-C
24
