Site Location And Preparation; Site Location; Gas Supply - Hamworthy Purewell VariHeat 65he Installation, Comissioning And Servicing Instructions

4.0 SITE LOCATION AND PREPARATION

4.1 Site Location.

•
The floor or plinth for the boilers and water manifold kit must be both flat and level to
ensure correct alignment of fittings and connections.
•
The floor or plinth must be sufficiently strong to support the weight of both the boilers
and manifold kit where used.
•
The floor or plinth must be fireproof in accordance with BS 6644.
•
The plantroom must have sufficient space for installation of boilers, manifold kits,
pipework, pumps controls, flues ventilation, access and servicing and other items of
plant.

4.2 Gas Supply.

•
Gas supply pipes must be in accordance with BS 6891 or IGE/UP/2
•
Gas supply connection to the boiler must not be smaller than the connection on the
boiler - R1"
•
Gas installation must be soundness tested to BS 6891 or IGE/UP/1 & IGE/UP/1A.
•
Gas installation must be purged to BS 6891 or IGE/UP/1 & IGE/UP/1A.
•
Inlet gas pressure to boiler should be nominal 20mbar (minimum 17.5mbar) dynamic at
the connection to the boiler.
•
Boiler house gas isolation valve must be clearly identified and installed close to the
entrance / exit.
Figure 4.2 – Gas Connection Point
HAMWORTHY HEATING LTD
6
PUREWELL VariHeat he
R 1" Gas Connection
500001170/K