14
Refrigerant pipe installation
Selecting refrigerant pipe
f Install the refrigerant pipe according to main pipe size for each capacities of DVM Hydro unit / Hydro unit HT.
Model name of DVM Hydro unit
ADN160BDE✴✴
AM160FNBD✴✴
AM✴✴✴FNBF✴✴
ADN320BDE✴✴
AM320FNBD✴✴
ADN500BDE✴✴
AM500FNBD✴✴
Refrigerant
side
Liquid side 3/8” (ø9.52) 3/8” (ø9.52) 1/2” (ø12.7)
Gas side 5/8” (ø15.88) 7/8” (ø22.23) 1-1/8” (ø28.58)
Keeping refrigerant pipe
f To prevent foreign materials or water from entering the pipe, storing method and sealing method (especially during
installation) is very important. Apply correct sealing method depending on the environment.
f Be especially careful when you penetrate the pipe through the hole in a wall or when the end of the pipe is exposed to
outdoor during installation.
f Use the flare nut supplied with the product. If other flare nuts are used, it can cause refrigerant leakage.
Exposure place Exposure time Sealing type
Outdoor
Longer than one month Pipe pinch
Shorter than one month Taping
Indoor - Taping
Pinching the refrigerant pipe
f Compress the end of the refrigerant pipe and weld the compressed part.
Refrigerant pipe
Welding part
Taping the refrigerant pipe
f Seal the end of the refrigerant pipe with a PVC vinyl tape.
End of the pipe
Refrigerant pipe
PVC tape
Squeeze flat
Stick the squeezed part to the pipe
Finish up by wrapping around the
pipe again
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