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Subject to change without notice | 83054200hUK – Translation into English of the original German operating manual | ait-deutschland GmbH
CONDENSATE DISCHARGE
The condensate from the air must be discharged frost-
free via a condensate pipe with a minimum diameter of
50 mm. For underlying surfaces that are permeable to
water, it is sufficient to insert the condensate pipe ver-
tically at least 90 cm into the ground. If the condensate
is discharged into drainage or sewage systems, install
frost-free with gradient.
Discharge of the condensate into the sewage system is
permitted only via a funnel siphon, which must be acces-
sible at all times.
Pressure relief
Equip the heating circuit in accordance with local stand-
ards and directives with a safety valve and an expansion
tank.
Also install filling and emptying devices, shut-off devices
and non-return valves in the heating circuit.
Overflow valve
Use an overflow valve for tanks integrated in series to
ensure the minimum flow rate of the heating circuit vol-
ume flow through the heat pump. The overflow valve
must be dimensioned so that the minimum flow rate of
the volume flow through the heat pump is ensured when
the heating circuit is shut off.
“Set the overflow valve”, page25
Buffer tank
The hydraulic connection of the heat pump requires a
buffer tank in the heating circuit. The required volume of
the buffer tank is calculated based on the following for-
mula:
V
buffer tank
=
Minimum flow rate of heat circuit volume flow / hour
10
For the minimum flow rate of the heat circuit
volume flow, see overview “Technical data/
Scope of delivery”, “Heating circuit” section.
In mono-energetic air/water systems, integrate the buf-
fer tank in the heating water outflow (forward flow) be-
fore the overflow valve.
Circulating pumps
CAUTION
Always note the model.
Do not use regulated circulating pumps.
Circulating pumps and domestic hot wa-
ter circulation pumps must be multi-stage
pumps.
Water heating
Water heating with the heat pump requires an addition-
al hot water circuit, parallel to the heating circuit. Make
sure that the heating water charge is not channeled
through the buffer tank of the heating circuit.
“Hydraulic connection” instructions.
