INSTALLATION

HOT WATER CONNECTIONS

Pressure reducing valve

If the mains water pressure is greater than 6 bar, a pressure reducing valve must be fitted.

Expansion relief valve

The tank expansion relief valve must be ACV approved and calibrated to a maximum of 7 bar. The valve discharge must be connected to the drain.

Hot water expansion vessel

A hot water expansion vessel must be installed.

Hot water circulation

If the tank is situated a long way from the point of use, then installing a recirculation loop can provide a faster supply of hot water to the outlets.

Temperature and pressure relief valve

If using the HeatMaster as an unvented hot water unit, in some countries, a temperature and pressure relief valve must be fitted - consult your ACV stockist for assistance.

Example of hot water connection with thermostatic mixer

1.Stop cock

2.Non-return valve

3.Pressure reducing valve

4.Expansion relief valve

5.Hot water expansion vessel

6.Hot water secondary pump (if fitted)

7.Thermostatic mixing valve

8.Drawoff tap

9.Drain cock

10.Stop cock for cleaning 11.Primary circuit filling valves 12.Temperature relief valve (UK only)

Example of parallel connection

Recommended for applications with a high continuous flow.

Example of series connection

Preferable for high temperature applications with up to three units.

3

1 2

4

2

6

8

 

 

7

 

10

5

12

 

 

11

Example of heating + storage connection

Recommended for applications requiring a high peak flow.

9

DANGER!

As a safety measure against scalding, we strongly recommend installing a thermostatic mixing valve.

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Casablanca Fan Company HM 71, HM 101 manual HOT Water Connections

HM 101, HM 71 specifications

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