Atmos Heating Systems
9
4.2
Storage tank
Connections
4.3
Domestic water connections
The flexible connecting pipes provided in the assembly kit are for the domestic water hot
and cold connections. Use the washers for sealing the connection between the flexible
pipes and the storage tank. The blue connecting point is for incoming cold water and the
red connecting point is the outlet for pre-heated domestic water. The mains water
pressure should be no more than 8 bar. If the mains water pressure is likely to exceed 8
bar, a pressure reducing valve should be fitted before connection to the storage tank.
4.4
Hard water
In areas of hard water (hardness in excess of 200ppm) an approved water conditioner
device must be fitted in accordance with the Building Regulations. Atmos can supply a
suitable conditioner for fitting to the cold feed to the storage tank. In areas of hard water,
failure to fit a suitable conditioner will invalidate the warranty.
4.5
Tank in unheated space
If the tank is installed in an unheated space particular care must be taken to protect the
domestic water pipes against freezing. Insulation for the domestic water flexible
connecting pipes is supplied with the assembly kit. It may be necessary to apply
additional insulation to these pipes and to other domestic water pipes particularly if the
unheated space is subject to draught.
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