Technical data

IMPORTANT

All water pipe connections throughout the sealed system must be capa-

ble of holding a pressure of up to 3 bars.

Radiator valves must conform to the appropriate standard.

Relief valve discharge must be directed away from any electrical compo-

nents or from positions where it would cause a hazard to the user.

Asuitabledraincockmustbettedtothelowestpointofthesystem.

For circuit design purposes, one should consider the information given

in Fig. 24 relating to the available pump head.

4.3.2 DOMESTIC HOT WATER

ATTENTION! Work must not be carried out on the appliance without the

gas and electricity supplies being switched off.

• The following are general requirements, but reference should be

madetoanylocalWaterSupplyCompanyregulationsbeforetting

the appliance.

• MainsColdWaterInlet.Devicescapableofpreventingtheowof

Figure 23 Volumetric Flow Rate & Pressure Difference Relation for the Circula-

tion Pump

*: Graph excludes the internal resistance of boiler.