12
Subject to technical amendments without notice | 83050700gUK – Translation of the original operating manual | ait-deutschland GmbH
19 Installing the hydraulic
connections
NOTE
All materials used in the heat source circuit
(pipes, connections, sealing material…) must
be corrosion resistant and suitable for the
groundwater quality. Use suitable plastics or
stainless steel.
IMPORTANT
Connect the unit to the heating circuit accord-
ing to the hydraulic diagram for the respective
model.
“Hydraulic connection” instructions
IMPORTANT
The heat source system must be designed
according to the specifications of the plan
-
ning manual.
Planning manual and “Hydraulic connection”
documents
NOTE
Check to make sure that the cross-section
and lengths of the pipes for the heating circuit
are adequately dimensioned. The free com-
pression of the circulation pumps must be
able to deliver at least the minimum through-
put required for your model.
“Technical data /Scope of delivery” overview,
“Heat source” and “Heating circuit” sections
NOTE
Check whether the cross-sections and
lengths of the heat source pipes are ade-
quately dimensioned.
NOTE
The heat source pump must be designed
as a constant speed pump. It must at least
produce the minimum throughput required for
your unit model. The heat source pump must
be designed by performing a pipe network
calculation.
“Technical data/Scope of delivery” overview,
“Heat source” sections
IMPORTANT
Please note that the designed heat source
pump may only be used within its pump char-
acteristic curve!
IMPORTANT
When installing the connections, always
secure the connections on the unit against
twisting, in order to prevent damage to the
copper pipes inside the unit.
NOTE
Install the dirt trap included in the scope of
delivery in the well shaft (heat source inlet)
The connections for the heating circuit or the heat
source are located at the rear of the unit:
For position of the connections, please refer
to the dimensioned drawing for the respective
model
Install shut-off devices for the heating water outlet
(flow) and heating water inlet (return) on the heat
pump side.
Install shut-off devices for the heat source inlet
and heat source outlet on the heat pump side.
NOTE
By installing the shut-off devices, the evapo
-
rator and condenser of the heat pump can be
flushed, if necessary.
Thoroughly flush the heating circuit and heat
source circuit before connecting to the unit.
NOTE
Dirt and deposits in the heating circuit and
heat source can cause malfunctions.
Connect the fixed pipes of the heating circuit with
the corresponding connections at the rear of the
unit. Use vibration isolators.
Vibration isolators must be installed to prevent
structurally borne sound transfer
to the fixed pip
-
ing.
Vibration isolators for the heating circuit are
included with the unit; they have a zinced mesh
and are marked in colour.
