Figure 4.4 Water Connection Point - Hamworthy MILBORNE381 Series Design Installation, Commissioning And Operating Instructions

4.4 Water Supply
•
The Milborne boiler is only suitable for operating on sealed (pressurised) heating
systems
•
The Milborne boiler is fitted with an electrical isolating valve, which will shut off
circulation through the heat exchanger 5 minutes after the boiler has ceased firing.
This must be acknowledged in the system design.
It is recommended by Hamworthy Heating, that the primary pump MUST be controlled
from the Master boiler to ensure synchronised operation - refer to fig. 4.6. Where twin
head pumps are installed a changeover control (not HHL supply) external to the boiler
is required.
•
Pressurised system to comply with BS 7074.
•
Each module is supplied with a safety valve set at 6barg.
•
It is strongly recommended that the system pipework is flushed at least twice
before adding water treatment and before installing the boiler.
•
In hard water areas (>180mg CaCO
strongly recommended to prevent the build up of sludge and scale.
•
Leaks in the system pipework should be fixed to prevent dilution of water
treatment.
Figure 4.4 - Water Connection Point
HAMWORTHY HEATING LTD
/litre) precautions such as water treatment are
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MILBORNE 500001130/J