Glow-worm Ultimate 40FF User Manual download pdf (Page 12)

2000225231B

3 Water Systems

METHOD 1

METHOD 2

METHOD 3

SUPPLY STOP

VALVE

SUPPLY

PIPE

HOSE

UNIONS

SERVICING

VALVE

TEMPORARY

HOSE

HEATING

SYSTEM

HEATING

SYSTEM

TEMPORARY

HOSE

UNIONS

SERVICING

VALVE

SUPPLY

PIPE

SUPPLY STOP

VALVE

DOUBLE CHECK

VALVE ASSEMBLY

HEATING

SYSTEM

SERVICING

VALVE

SUPPLY

STOP VALVE

SUPPLY

PIPE

HOSE

UNIONS

DOUBLE CHECK

VALVE ASSEMBLY

OVERFLOW

CISTERN

COMBINED

CHECK VALVE

AND VACUUM

BREAKER

PRESSURE

REDUCING

VALVE

0051M

Diagram 3.6

3.16 Filling a Sealed Water System

Provision for filling the system at low level must be made. Three

methods are shown in diagram 3.6. There must be no permanent

connection to the mains water supply, even through a non-

return valve.

3.17 Water Makeup

Provision must be made for replacing water lost from the

system. A make up vessel mounted above the highest point of

the system and connected through a non-return valve to the

system on the return side of either the hot water cylinder or

heating system, see diagram 3.5.

Alternatively provision for make up can be made by a filling loop.

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Glow-worm Ultimate 40FF User Manual Page 12

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