Redring DC3810 manual Cold Mains Component Layout, Always Consult the Regulations

Please also take into account any fitting that could restrict flow such as water meters, softeners etc.

Connection to the unit – Use 22mm compression for all connections. Use gunmetal, DZR or brass fittings, noting local water conditions.

COLD MAINS COMPONENT LAYOUT

PRESSURE REDUCING

VALVE/FILTER

COLD TAPS

NON RETURN VALVE

EXPANSION VESSEL

(OPTIONAL)

PRESSURE GAUGE EXPANSION VALVE

DRAIN POINT

No valve is to be fitted between the expansion valve and the cylinder, except a drain point.

It is recommended that a stop cock is fitted to the above to facilitate servicing. Install before the pressure reducing valve. Always fit a drain tap in an appropriate position for drain down as low as possible.

DON’T USE MONOBLOC MIXERS IF THE COLD SERVICE IS UNEQUALISED AS IT WILL BACK – PRESSURISE THE UNIT AND RESULT IN DISCHARGE.

DISCHARGE

Both the pressure and temperature relief valve fitted to the unit and the expansion valve supplied loose must be arranged to comply with G3 regulations and each discharge into an open (visible) tundish.

A 300mm vertical drop of 22mm diameter pipe must be fitted to the tundish.

NB: THE TUNDISH AND DRAIN MUST BE POSITIONED AWAY FROM ELECTRICAL DEVICES.

	EXPANSION
PRESSURE AND	VALVE
TEMPERATURE	COLD FEED
RELIEF VALVE
	22mm
	15mm
15mm

TUNDISH

22mm

ALWAYS CONSULT THE REGULATIONS!

IMPORTANT: Discharge arrangements are the responsibility of the installer and reference to current building regulations should always be made. Applied Energy Products Ltd. offers the foregoing as guidelines only.

The main purpose of discharge pipework is to allow full flow from relief valves to be accumulated and safely routed to a point outside the building at low level.

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