Gas Supply (Thermocompact); Central Heating Flow And Return Pipework (Thermocompact) - Vaillant 824/2 E Instructions For Installation Manual

5.10 Gas supply (thermoCOMPACT)

• Connect the 15 mm compression gas service cock (1)
and 15 mm copper outlet tail (22 mm copper tail with
637) (3) as supplied with the appliance and tighten.
• Connect a gas supply pipe of not less than 15 mm
diameter to the copper tail (minimum 22 mm with
637).
• Tighten all connections.
(Ensure the gas supply pipework is adequately sized
such that a 20 mbar gas pressure is available at the
boiler inlet at full flow rate).
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Fig. 5.9: Fitting the gas connection thermoCOMPACT
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R1
Supplied By www.heating spares.co Tel. 0161 620 6677
5.11 Central heating flow and return pipework
(thermoCOMPACT)
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 (6) and return (1)
service valves to the appliance (8 and 3), with the
washers (2 and 7) provided and tighten the nuts.
Ensure that the valve spindles face downwards and
the drain points face to either side of the boiler.
• Connect the 22 mm copper pipe tails to the service
valves as shown in the illustration and tighten the
nuts.
• Connect the central heating pipework to the flow (9)
and return (4) tails.
I
Pressure Relief Valve
0
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).
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Fig. 5.10: Central heating flow and return pipework
Boiler Installation Sequence 5
4
9
6
7
8
thermoCOMPACT
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0
1
2
3
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