Central Heating Flow And Return Pipework; Connecting The Flue System To The Boiler - Vaillant TURBOmax Pro 28 Instructions For Installation And Servicing

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Fig. I.8: Central heating flow and return pipework
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BOILER INSTALLATION SEQUENCE
I
0
1
2
3
Central heating flow and
return pipework
Before connecting the heating circuit
to the boiler appliance, all pipework
and radiators must be thoroughly
flushed to remove any installation
debris.
Connect the central heating flow
(4) and return (1) service valves to
the appliance, tighten the nuts with
the washers provided (5 and 2).
Ensure that the valve spindles face
downwards and the drain points
face to either side of the boiler.
Connect the central heating
pipework to the flow (4) and return
(1) service valves.
Pressure Relief Valve
Connect a discharge pipe not less
than 15 mm diameter to the outlet of
this valve.
The discharge pipework should be as
short as possible and installed with a
continuous fall away from the boiler.
The pipe should terminate in a
position which ensures that any
discharge of water or steam from the
valve cannot create a hazard to
persons in or about the premises, or
cause damage to any electrical
components or external wiring, and
the point of discharge should be
clearly visible (see diagram in plastic
bag).
Connect the flue system
to the boiler
Refer to separate air/flue duct
installation instructions included.
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