Before installing an DVM Hydro unit / Hydro unit HT please read this manual thoroughly to ensure that you know how to
safely and eciently install a new appliance.
Store the Operation and Installation in a safe location and remember to hand it over to the new owner if the Product is sold
or transferred.
❋ This product uses R-410A and R-134a(Hydro unit HT) are refrigerant.
- When using R-410A and R-134a(Hydro unit HT), moisture or foreign substances may aect the capacity and reliability
of the product. Safety precautions must be taken when installing the refrigerant pipe.
- The designed maximum pressure of the system is 4.1 MPa. Select appropriate material and thickness according to the
regulations.
- R-410A and R-134a(Hydro unit HT) are a quasi-azeotrope of two refrigerants. Make sure to charge with liquid phase
when lling refrigerant. (If you charge vapor refrigerant, it may aect the capacity and reliability of the product as a
result of a change in the blend of the refrigerant.)
❋ You must connect the outdoor unit for R-410A refrigerant.
❋ This product uses plate type heat exchanger, and extra concern must be taken regarding on selecting the installation
location since it requires water pipe installation.
❋ For product protection, closed type water circuit system must be adopted for water pipe system.
Before the installation, read the ‘Severe warning signs’ and the ‘Caution signs’ thoroughly.
Manufacturer is not responsible for accidents due to incorrect installation. (User will be responsible for any service charges
that may occur.)
Manufacturer is not responsible for any product problems that may occur due to incorrect water pipe installation.
Maintain the water temperature and the amount of water ow within operational range. Manufacturer is not responsible if
the heat exchanger freezes and ruptures due to incorrect installation.
WARNING Hazards or unsafe practices that may result in severe personal injury or death.
CAUTION Hazards or unsafe practices that may result in minor personal injury or property damage.