Collector; Collector Hose; Bending Diameter; Maximum Lengths - IVT Greenline D14 Manual To Installation, Commissioning And Maintenance

Collector hose

The collector hose consists of a thin-walled plastic hose of make Pem 40 x 2.4 DN 6.3. Length and
depth as in IVT's dimensioning program.
Install the hose rising towards the heat pump to avoid air pockets.
It is vitally important that the filling around the ground coil does not contain stones or other objects
that could damage the coil. The final filling is best carried out after the ground collector has been
pressure tested. Avoid chips or dirt getting into the coil when cutting.
Installation and filling around the collector hose must comply with local regulations. Mark AMA is a
general material and work description issued by Svensk Byggtjänst.

Bending diameter

Minimum bending diameter permitted is 1 metre. Always use an elbow coupling for sharper bends. If
you damage the hose by bending it too sharply you can repair it with a straight connector.

Maximum lengths

Specified pressure falls and hose lengths are based on heat transfer fluid containing ethanol 30% by
volume. Other heat transfer fluids are not recommended because they are sluggish at low tempera-
tures. The table shows the maximum hose length for each heat pump model. The coils can be parallel
connected if the collector's length exceeds that permitted for a circuit. Note that maximum hose
length per coil is specified for parallel connecting. The table specifies that e.g. a Greenline 14 has a
maximum coil length of 200 metres and for 2 parallel coils the length is 800 metres a coil, a total of
1,600 metres.
Heat pump
Greenline 14
Greenline 16
Greenline 20
Greenline 25
Greenline 35
Greenline 40
Max. Hose length
with one loop
200 metres
120 metres
Max. hose length per coil
with two loops
800 metres
650 metres
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