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INSTALLATION INSTRUCTIONS
6.6
WATER CONNECTION
CAUTION:
B Isolate the mains supplies before starting
any work and observe all relevant safety
precautions.
B Mark the hot and cold water pipes in order to avoid
confusion.
B Join the hot and cold pipework onto the connections
provided.
4
1
Fig. 26
1
Hot water outlet pipe
2
Cold water inlet pipe
3
Water valve with filter
4
Water sealing washer
B Make the cold (inlet) water connection using the
sealing washer, short 22mm diameter (with attached
nut) connection pipe and water isolation valve
supplied with the appliance.
B Make the hot (outlet) water connection using the
sealing washer and short 22mm diameter pipe (with
attached nut) supplied with the appliance.
B In order to prevent problems caused by water
hammer, it is advisable to install a non-return valve.
Make sure that connections doesn't
obstruct access to the condensate trap
cover (
Fig. 27, pos. 1).
20
4
3
2
6720646322-23. 1 V
6.7
CONDENSATE PIPE WORK
Fig. 27
1
Condensate trap cover
2
Condensate drain connection
NOTICE:
B Where a new or replacement water
heater is being installed, access to an
internal "gravity discharge" point should
be one of the factors considered in
determining water heater location.
B The condensate pipe must be nominally
32mm Ø plastic pipe.
B The condensate pipe work must fall at
least 50mm per metre towards the outlet
and should take the shortest practicable
route.
B Ensure there are no blockages in the pipe
run.
Key to condensate illustrations
1
Condensate discharge from water heater
2
Soil and vent stack
3
Minimum 450mm and up to three storeys
4
Visible air break at plug hole
5
Sink or basin with integrated overflow
6
75mm sink waste trap
7
Condensate pump
8
Condensate trap
Tab. 6
6.7.1
INTERNAL CONNECTIONS
In order to minimise risk of freezing during prolonged
cold spells, the following methods of installing
condensate drainage pipe should be adopted, in order of
priority.
Wherever possible, the condensate drainage pipe should
be routed and terminated so that the condensate drains
away from the water heater under gravity to a suitable
6 720 646 322 (2012/05)
1
2
6720646322-24. 1 V
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