Connection Of The Refrigerant Circuit; Connection Lines Of The Refrigerant Circuit; Connection Of The Outdoor Unit On Refrigerant Side - iDM iPUMP A 2-7 Installation Instructions Manual

7. Connection of the refrigerant circuit

7 .1. Co n n ec ti on li n es of t h e re f rig er ant ci r -
cui t
The outdoor unit is connected to the refrigerant circuit
of the indoor unit via two steam diff usion-sealed in-
sulated copper pipes of air-conditioning pipe quality.
The maximum length of the pipes are 20 m in one
direction.
To avoid buckles in the refrigerant pipes, the mi-
nimum bend radius must be observed. To prevent
embrittlement or fractures, a pipe location must never
be bent twice. The bend radius should not be less
than 100 - 150 mm.
The connection pipes between indoor
unit and outdoor unit are not included
in the delivery. They are available as an
accessory and can be ordered by the
iDM-dealer.
Dimension of the refrigerant pipes
iPump A 2-7:
Liquid line: 3/8" (Ø 9.53 x 0.8 mm)
Hot gas line: 1/2" (Ø 12.7 x 0.8 mm)
iPump A 3-11:
Liquid line: Ø 12.0 x 1 mm
Hot gas line: Ø 16.0 x 1 mm
On the refrigerant side the indoor unit and the outdoor unit of iPump A heat pumps
are „hermetically tight".
Open refrigerant pipes must be protected against moisture and dirth with caps or tapes.
Refrigerant pipes may not be buckled or crushed!
(C) IDM ENERGIESYSTEME GMBH
7. 2 . Co nne ct i o n o f t he o u t do o r u ni t o n r e fri -
The refrigerant pipes are factory-fi tted with protective
caps. Before soldering the refrigerant connection
lines, check that the two shut-off valves are fully
closed. For connecting the refrigerant lines, the pro-
tective caps must be cut with a pipe cutter.
The soldered connections must be made according
to the requirements of the cooling technology by a
trained refrigeration engineer licensed by iDM-Ener-
giesysteme GmbH.
The refrigerant connection pipes must be cut to the
required length using a pipe cutter, and the inner and
outer burrs must be removed with a special deburrer.
The soldering must be performed under protective
gas (nitrogen N2).
Installation instructions iPump A 2-7, 3-11
Connection of the refrigerant circuit
g e r ant s id e
41