Delta MCS-1800 Wartungshandbuch PDF herunterladen (Seite 39)

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

Filling The System

The Initial filling of a sealed heating system, and subsequent refilling, must be by a method that has

been approved by the Water Regulation Advisory Scheme (WRAS) for that type of heating system.

i.e. Domestic (

In-House

) Fluid Category 3 (

C-3

)

Non Domestic (Other than

In-House

) Fluid Category 4 (

C-4

)

For Category 3 systems, the approved method of filling must comprise of the following components in

the arrangement shown;

 Control Valve incorporating a Double Check

Valve on the Mains Cold Water pipework.

 Temporary Connecting Hose, which must

be disconnected after use.

 Control Valve, on the heating system.

For Category 4 systems, the approved method of filling must comprise of the following components in

the arrangement shown;

 Control Valve.

 Strainer.

 Verifiable Backflow Device with Reduced

Pressure Zone (RPZ Valve).

 Incorporating a ‘Type BA’ Air Gap.

 Tundish.

 Control Valve.

Furthermore, in accordance with BS 6644: 2011 system with an input greater than 70kW (nett), an

automatic water replenishment unit shall be installed to automatically replenish any lost or evaporated

water.

Please refer to BS 6644: 2011 for allowable water replenishment methods for use with

sealed/pressurized heating systems.

For information on a comprehensive range of pressurization units that comply with current British

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

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Delta MCS-1800 Wartungshandbuch Seite 39