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11
Refrigerant detectors
■
Under no circumstances use ignition sources to detect the refrigerant and refrigerant leaks.
■
No flame detectors may be used to detect leaks.
12
Leak detection
The methods described below are suitable for detecting leaks in systems filled with
a flammable refrigerant:
Leak detection with electronic refrigerant detectors:
■
Electronic leak detectors may not be adequately sensitive or need to be calibrated for a
specific detection range. Calibrate the detector in a refrigerant-free environment.
■
The refrigerant detector must be suitable for detecting R32.
■
The refrigerant detector must contain no potential ignition sources.
■
Calibrate the refrigerant detector for the refrigerant used. Set the trip threshold < 3 g/a, which
is suitable for R32. Leak detection using leak detection fluids:
■
Leak detection fluids are suitable for most of refrigerants.
!Attention
Chlorine-containing leak detection fluids may react with the refrigerant.
As a result, rust may form.
Do not use any leak detection fluids that contain chlorine.
Procedure when leaks are found in the refrigeration circuit:
■
Immediately extinguish any fire in the vicinity of the heat pump.
■
Do not solder leaks on the refrigeration circuit.
13
Refrigerant suction and evacuation
Perform the steps described in the "Refrigerant suction" section.
Perform the steps described in the "Vacuum generation in refrigerant lines and indoor unit"
section.
14
Refrigerant filling
Follow the steps described in the "Filling the refrigerant lines and indoor unit" section.
15
Decommissioning
Follow the steps described in the "Final decommissioning and disposal" section.
16
Marking
(inscriptions on the heat pump)
A plate with the date and signature and the following information must be placed in a clearly
visible position on the heat pump which has been decommissioned:
■
Flammable refrigerant
■
Installation is not working.
■
Refrigerant has been removed.
17
Refrigerant and compressor oil recovery
■
Refrigerant recovery: see the "Refrigerant suction" section.
■
Compressor oil recovery: see the "Disposal of compressor and compressor oil" section.
Summary of Contents for HPMI2 - 12
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