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Aquarea air-to-water heat pumps - Planning and installation manual - 02/2022
Installation
6
CAUTION
Danger of injury due to unprofessional handling of refrigerants
Unprofessional handling of refrigerants leads to various dangers of injury such as freezing, fire and
the danger of explosions and the danger of intoxination.
►
Working with the refrigerant must be done by a trained skilled person or an authorised
dealer with refrigerant certification.
►
Observe all the Safety Notes in force for the respective refrigerant (R32, R410A or
R407C).
ATTENTION
Danger of the devices being damaged by incorrect refrigerant
The use of other refrigerants or multi-component refrigerants than those indicated in this manual or
the respective operating instructions can lead to damage to devices and safety risks.
►
Only use R32 refrigerant for Aquarea High Performance and T-CAP series models of the
J Generation, only use R410A refrigerant for the Aquarea High Performance and T-CAP
series models of the H Generation and only use R407C refrigerant for the Aquarea HT
series models of the F and G Generation.
►
Do not mix the prescribed refrigerant with refrigerants of another type or replace it with a
refrigerant of another type.
Danger of faults in the refrigerant circuit due to humidity and foreign gases
To avoid faults in the refrigerant circuit due to penetrating humidity or foreign gases, evacuation of
the system before commissioning is mandatory.
►
The system must be evacuated before commissioning and a pressure test be conducted.
► If the length of the refrigerant pipes is greater than the pre-filled pipe length of the device
(→
4.6.2.3 Technical Data (bi-bloc systems), S. 40
, →
), the indicated quantity of additional refrigerant must be added.
Endangerment of the environment due to leaking refrigerant
To keep the endangerment of the environment to a minimum, no refrigerant must be emitted to the
environment when working on the refrigerant circuit.
►
While working on the refrigerant circuit, take suitable measures to ensure that no
refrigerant is emitted to the environment.
►
Remove the refrigerant present in the system by means of a suction station and dispose
of it professionally according to the provisions in force.
Carry out the following steps to evacuate the system:
1.
Connect the filling hose to the low pressure side of the manometer station and to the service
port of the 3-way valve, as shown in the illustration (see below). See that the end of the filling
hose with the pin is connected to the service port.
2. Connect the central hose of the manometer station to a vacuum pump with a non-return
valve or to a vacuum pump with adapter.
3. Switch on the vacuum pump until the pressure has dropped to a measured value of -1 bar.
Evacuate the system for about 30 minutes.
