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4
Installation
Filling the System (Ambient loop)
1. Check and charge expansion vessel.
If expansion vessel is used, close the valve under the
expansion vessel.
2. Check all connections including factory fitted ones are tight.
3. If you use filling pump, Connect the filling pump and return
line on the ambient loop system's filler connector.
4. Insulate all exposed ambient loop pipework.
5. Thoroughly clean and flush, system of all debris. (see
section 4.2 for instruction.)
6. Close the valve in the filler connector, open the valves on
the filler connector.
7. Fill heat pump unit's ambient loop with suitable sanitary
water or antifreeze solution mix.
When connecting metal pipes of different materials insulate
the joints to prevent a corrosive reaction taking place which
will damage the pipework.
8. Check for leakages. If leakage is found, retighten the nut
onto the connections.
9. Pressurise system to atmospheric pressure. Top up with
water as necessary.
10. Close the valves on the filler connector, Open the three way
valve in the filler connector.
11. If expansion vessel is used, open the valve under the
expansion vessel.
Ambient loop flow rate range [L/min]
If the water or brine flow rate is less than 7.2 L/min, the flow rate error will be activated.
Sizing Expansion Vessels
Expansion vessel volume must fit the local system water or brine volume. Refer to the 4.3 water pipe work for details
7.2 - 24.0
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