Delta MCS-1800 Service Manual download pdf (Page 40)

MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR

Telephone 08456 448802 Fax 08456 448803 Email info@mhgheating.co.uk Web www.mhgheating.co.uk

020315 Draft

Expansion Vessel

In accordance with BS 6644: 2011, WRAS Regulations, and Local Authority Water Regulations, as

applicable, the installer shall install a suitably sized, and approved, Expansion Vessel to ensure that the

water capacity of the system has ample expansion capacity. In complete compliance with BS6644:2011 a

tapping is provided at the base of the boiler for the connection if a dedicated expansion vessel.

The location of the expansion vessel shall only be isolatable from the system via a Lockable Type Service

Valve, which shall be locked in the

OPEN

position, to prevent accidental isolation.

Furthermore, a drain facility should be provided adjacent to the expansion vessel to aid the routine

maintenance, overhaul, of the vessels Air Pressure setting.

For information on a comprehensive range of expansion vessels that comply with current British

Standards and WRAS Regulations, please contact MHG Heating Ltd Sales.

System Water Quality

Cleaning, flushing and water treatment must be carried out in accordance with the requirements of

prevailing Building Regulations, British Standards, CIBSE Guides and related documents.

The entire system/s MUST be thoroughly cleaned and flushed to remove debris, flux residues, etc.

before opening the boiler isolation valves & flooding the boiler.

Particular care must be taken where the ProCon boiler is being retro-fitted into an old/existing system,

as system silt or magnetite can be very damaging to the new boiler. Consideration must be given to the

installation of a MHG matched plate heat exchanger. Failing this a suitable straining/filtering device

must be utilized to remove water borne debris.

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 69 70

No comments

Delta MCS-1800 Service Manual Page 40