Hoval TopVent TP, Руководство по эксплуатации

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7.5 Refrigeration system installation
The refrigerant pipes must be installed by a qualified refrigeration technician in line
with the local regulations.
Make sure that the following is available.
Refrigerant pipes ■ Liquid line:
∅
9.5 mm, annealed copper
■ Gas line:
∅
22.2 mm, semi-hard copper
Pipe insulation ■ Thermal conductivity λ ≤ 0.035 W/(m · K) at 0 °C
■ Water vapour diffusion resistance µ ≥ 5000
■ Insulating layer thickness ≥ 15 mm
■ Outer insulation UV-resistant and protected against
mechanical loads
PU foam ■ High bulk density
■ Building material class B1 (low flammability)
■ Fine cell structure
■ Temperature-resistant - 40…90 °C
To avoid damaging the unit:
■ Do not use any flux.
■ Carry out soldering work in a protective gas atmosphere (e.g. nitrogen).
■ Protect the unit against excessive heat with a wet cloth.
■ Insulate the refrigerant pipes with appropriate care.
Attention
Danger of unit damage due to condensation. Insulate the refrigerant pipes
and connections with appropriate care to prevent condensation forming
and dripping into the hall.
Proceed as follows:
■ Remove the plugs from the condenser/evaporator connections and clean the
connections.
■ Open the expansion valve casing:
– Unscrew the cover and the fastening clamp.
– Remove the pipe insulations and the actuator.
■ Use the enclosed connection pipe to connect the expansion valve to the
condenser/evaporator.
– Shorten the pipe as required using a pipe cutter.
– Deburr the cut surface.
– Make sure that there are no foreign objects in the pipe.
■ Solder the connection pipe to the condenser/evaporator connection. Protect
surrounding parts against excessive heat with a wet cloth.
■ Solder the connection pipe to the expansion valve connection. Protect
surrounding parts against excessive heat with a wet cloth.
■ Install the refrigerant pipes in the same way according to Fig. 25 and Fig. 26.
Observe the installation instructions provided for the condensing unit.
■ Reassemble the expansion valve.
■ Carry out an air-tightness test and vacuum drying.
1
2
3
4 5
■
1
Actuator
■
2
Fastening clamp
■
3
Pipe insulations
■
4
Input (from the condensing unit)
■
5
Output (to the condenser/evaporator)
Fig. 22: Expansion valve
Fig. 23: Protect surrounding parts against
excessive heat with a wet cloth.
32
TopVent ® TP
Transport and installation
4 218 024-en-04