Gebwell Qi 10, Installation, Operation And Maintenance Manual

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16 v3-8 23052017
6 PIPE INSTALLATION
6.1 Collector
When 40x4.2 PN6.3 PEM hoses are used.
Device *Recommended
length of
collection piping
(m)
Recommended
active drilling
depth (m)
Qi6 300–400 110–130
Qi8 350–2x250 130–160
Qi10 400–2x300 160–200
Qi13 2x250 – 3x400 210 x 2x150
* Depends from soil
The table values are examples intended to be guidelines.
Before beginning installation, accurate calculations of the
building’s heat requirements must be prepared.
The maximum length for a single collector loop is 400 m.
If there is a need to install more piping, the piping must be
divided into two loops that are connected in parallel. The
connection must be conducted so that the loop flow can be
balanced.
The collection piping must rise constantly towards the
heat pump in order to prevent air pockets. If this is not
possible, venting mechanisms must be installed at the high
points.
Residual installation impurities must be flushed from the
collector before installing the heat pump.
The collector connection must be selected before
installing the device in place. The connection can be
changed to the right, left or back instead of the top. At
least 600 mm of connection space must be reserved in the
outgoing direction.
1. Disconnect the collector pipes from the
elbow fittings by pressing the plastic collar
of the claw coupling with a wrench.
2. Disconnect the pipe from the top connection
and turn the elbow fitting to the desired
direction.
3. Cut the pipe to the desired length, if
necessary.
•
Insulate all of the building’s source/brine pipes
with closed-cell insulation in order to prevent
water condensation.
•
Use supports insulated with rubber to support the
pipes.
•
Place the level expansion vessel in the highest
point of the collector, in the incoming pipe before
the source pump.
•
Mark the name of the heat collection liquid on
the level expansion vessel.
•
Install shut-off valves in the pipe connections as
close as possible to the ground source heat pump.
•
Ensure that water does not spill on the pump or
in the electrical devices during operation.
•
Connect the supplied collector valve group,
including the expansion vessel, as shown in the
figure. The arrow on the valve housing indicates
flow direction. The valve group size is DN25. Do
not use a pipe size smaller than 28 mm for the
connections (bigger is recommended).
•
The collector must be pressure tested at a
pressure of 3bar and the test pressure must be
maintained for at least 30 min.
• In the collector/brine, only use connection parts
that are intended for cold conditions.
UTILITY
ROOM