Collector Hose; Bending Diameter; Maximal Lengths - IVT GreenlineC 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.

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 pipe joint.

Maximal lengths

Specified pressure drop and hose lengths are based on heat transfer fluid containing 29 volume percent
ethanol. Other heat transfer fluids are not recommended because they give high pressure drop at low
temperatures. 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 11 has
a maximum coil length of 400 metres and for 2 parallel coils the length is 800 metres a coil, a total of
1,600 metres.
Heat pump:
Greenline C4
(hose 32 x 2.5)
Greenline C4
Greenline C5/D5/E5
Greenline C7/D7/E7
Greenline C9/D9/E9
Greenline D11/E11
Max. hose length
with one loop
180 metres
500 metres
500 metres
400 metres
400 metres
400 metres
33
Max. hose length per coil
with two loops
360 metres
1,000 metres
1,100 metres
800 metres
800 metres
800 metres