Water Supply - Hamworthy Purewell VariHeat he Installation, Commisioning And Maintenance Instructions

4.4 Water Supply

•
Feed and Expansion tanks to comply with static height requirements of BS6880 &
BS6644.
•
Cold feed and open vent pipes to comply with requirements of BS 6644.
•
Pressurised system to comply with BS 7074.
•
It is recommended that the system pipework is flushed twice before water
treatment.
•
In hard water areas precautions such as water treatment should be implemented to
prevent the build up of sludge and scale.
•
Leaks in the system pipework should be fixed to prevent dilution of water treatment.
•
Maximum working water pressure is 7 bar.
•
For minimum water pressure see Appendix 'E' - Water Data (Page 47)
Model Type
PV105he & 125he
Figure 4.4 – Water Connection Points
HAMWORTHY HEATING LTD
Flow Connection
Return Connection
Condensate Take-Off
8
PUREWELL VariHeat he
Model Type
PV65he & 85he
500001155/F