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ENGLISH
Refrigerant pipe work on DVM Hydro unit HT
DVM Hydro unit HT has refrigerant pipes of two different types .
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Liquid side pipe
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Gas side pipe
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Make sure there are no foreign substances and impurities in the pipe .
• There is no nitrogen gas inside of connected pipes of Hydro unit HT and the outdoor unit .
• DVM Hydro unit HT is using refrigerant R-134a in the integral circuit . The connected pipes of Hydro unit HT and
the outdoor unit are using R-410A
• If impurities (moisture, micro-substances) are introduced into the refrigerant pipes, the product performance and
reliability may be seriously affected .
• The design pressure is 4 .1 MPa (594 .7 psi), and make sure to consider selecting the refrigerant pipes which meet
the standard(material, thickness)
• Make sure to use liquid refrigerant when charging the refrigerant, because the used refrigerant is a blended
refrigerant .
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DVM Hydro unit HT uses a plate type heat exchanger, and make sure to consider installation location to
connecting water pipes .
CAUTION
1 . Remove the safety cap of the refrigerant pipe and fasten the nuts after
connecting refrigerant pipes to each port of the Hydro unit HT .
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Make sure to hand tighten the nut first, after that use tools like torque
wrench and spanner .
Gas side
Liquid side
2 . Wrap the refrigerant pipes with insulation .
3 . Cut the rest of insulation .
4 . Make sure to check any defects on the bent parts of the pipes .
5 . The standard temperature and humidity condition is 30 °C (86 °F) with
humidity below 85 % . If the condition is in high humidity, use one grade
thicker . [Over 10 mm (0 .4 inch)]
DB68-12327A-00_IM_DVM Hydro HT_AA_EN_.indd 19
DB68-12327A-00_IM_DVM Hydro HT_AA_EN_.indd 19
2023-06-15 오전 10:37:24
2023-06-15 오전 10:37:24
