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4
Installation
4.4 Ambient Loop Pipe Work
Pipework Connections
Connections to the heat pump unit should be made using the
22 mm compression as appropriate.
When connecting Ambient Loop pipes using compression
fittings, insert copper liner for Ambient Loop pipe (accessory
parts) into the pipes and tighten them from 0.75 to 1.25 turns.
Do not over-tighten compression fittings as this will lead to
deformation of the olive ring and potential leaks.
Note:
To weld the pipes in the field, cool the pipes on the heat
pump unit using wet towel etc.
Side Connections
It is possible to angle the ambient loop connections, for
en
connection to the side instead of top connection.
To angle out the connection:
1. Remove left side panel.
2. Cut the pipes to the desired length and angle the pipes in
the desired direction.
3. Make a hole on the panel.
4. Fit the panel
5. Connect the pipes
6. Please fill in the gap between panel and ambient loop pipes
with insulation
Notes:
• For side connection, the pipe diameter is 22.2 mm.
• Triangle marks on left side panel shows center of ambient
loop pipes.
• Noise from heat pump can be significant.
21
How to install PICV (Pressure Independent
Control Valve)
PICV should be installed on the Ambient loop pipe in order to
balance water or brine in Ambient loop.
Insulation of Pipework
• All exposed ambient loop pipework should be insulated to
prevent unnecessary heat loss and condensation. To prevent
condensate entering the heat pump unit, the pipework and
connections at the top of the heat pump unit should be
carefully insulated.
• Ambient loop inlet and outlet pipework should not be run
close together where possible, to avoid unwanted heat
transfer.
• Pipework between Local System2 and heat pump unit should
be insulated with suitable pipe insulation material with a
thermal conductivity of ≤ 0.04 W/m.K.
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