Intergas Heating Ltd 22
8.2 Connecting DHW installation
1. Flush the installation thoroughly to clean (please refer to current Standard
Codes of Practice).
2. Fit the cold and hot water pipes into the shut off valve and the elbow.
3. Existing connections must not be twisted, in order to avoid leakages.
Make sure the compression fittings are tightened thoroughly to prevent leakage.
8.2.1 Notes
•
If the appliance is only used for the provision of hot water, the heating function can
be switched off by entering the service menu and change parameter 1.
The CH installation does not then have to be connected or filled.
•
If the appliance is taken out of operation during the winter and disconnected from
the mains supply, the DHW water must be drained in order to prevent freezing.
For this purpose the DHW connections below the appliance must be removed.
8.2.2 Flow resistance graph for appliance DHW circuit
A = Combi Compact HRE 24/18 (*)
B = Combi Compact HRE 28/24
C = Combi Compact HRE 36/30 & Combi Compact HRE 36/40
X. Bar
Y. Litres per minute
(*) The Combi Compact HRE 24/18 is equiped with a flow restrictor of 8 litres.
When a DHW flow above 8 liters is required this flow restrictor has te be removed.
8.2.3 Minimum mains water pressure
A minimum of 0,5 bar mains cold water pressure is needed to ensure that the
DHW circuit of the Intergas HRE boiler is working correctly.
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