Gas, Water And Condensate Connections; Gas Connection; Water Connections; Condensate Drain Connection - Vaillant ecoMAX pro SERIES Instructions For Use Installation And Servicing
Wall hung condensing boilers for traditional open vented systems
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10 Gas, Water and Condensate Connections
10 Gas, Water and Condensate
Connections
10.1 Gas Connection
Before connection check the supply of local gas.
The gas supply can be connected from below, or through
the wall at the rear of the boiler.
Ensure the supply pipe is fully engaged in the compres-
sion fitting on the gas service valve inlet. See Fig. 10.1.
and refer to section 4.3.
GAS SERVICE
COCK SHOWN IN
OPEN POSITION
GAS SERVICE
COCK LINER
GAS
SERVICE
COCK
GAS
SUPPLY
PIPE IN
Fig. 10.1
10.2 Water Connections
Provision is made for the water connections to be made
from above the boiler, see Fig. 10.2 (using the two 22mm
compression couplers supplied). The position is shown
on the wall template.
Flush out the domestic hot water and the heating
systems before connecting to the boiler.
RETURN
Fig. 10.2
16
UNION CONNECTOR
SPIGOT
CAP
PLASTIC
OVERFLOW
PIPE
CONDENSATE DRAIN
CONNECTION
FLOW
10.3 Condensate Drain Connection
The condensate drain connection is at the rear of the
boiler, see Fig. 10.1. A 21.5 mm plastic overflow pipe
should be connected to the spigot on the condense trap
(using the coupler). The drain pipe should have a fall of
a least 2.5° away from the boiler. Condensate should, if
possible be discharged into the household internal drai-
nage system. If this is not practicable, discharge can be
allowed into the external household drains or a purpose
designed soak away.
It is recommended that any external condensate drain
pipe is insulated and also preferably of 32mm diameter,
to prevent freezing in adverse weather conditions.
The condensate is discharged periodically in 'slugs' by
siphonic action.
It is not necessary to provide air breaks or extra traps in
the discharge pipe, as there is already a 75mm high trap
inside the boiler. Fitting an extra trap may cause the
boiler siphon to work incorrectly. Refer to BS 6798 and
BS 5546 for advice on the disposal of the boiler con-
densate.
Instructions for Use, Installation and Servicing ecoMAX pro
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