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Hydro Unit
Installation Manual
• Wear heavy duty gloves during installation work to avoid injury.
• Install the Outdoor Unit securely in a location where the base can
sustain the weight adequately.
• In enclosed areas, if the refrigerant leaks during installation vacate
and ventilate immediately.
• After installation is complete ensure and confirm that refrigerant
does not leak.
If refrigerant leaks into a room and flows near a fire source noxious
gas may be generated.
• Do not block any drain hoses. Hoses may come off and electric
shocks may occur.
■
Notes on system design
• The inlet water temperature to the Hydro Unit for HWT-110 must
be 65 °C or less. (For HWT-60 must be 55 °C or less.)
Especially, be careful when there is an external heating source
such as a boiler.
When hot water over 65 °C or 55 °C returns, it may result in a
failure of the unit or water leakage.
• The flow rate of the circulating water must meet the following
range.
11 kW 13 L/minute or more
6 kW 10 L/minute or more
If the flow rate becomes less than the minimum, the protective
device is activated to stop the operation.
To ensure the minimum flow rate of the water system, install a
bypass valve on one water circuit. Please note this circuit must
contain a minimum of 20 liters. If total water amount is not enough,
the unit may not function fully due to protective operation.
• Do not drive water by power other than the pump built in the Hydro
Unit.
• The back up heaters, in the Hydro Unit, are designed to assist the
heat pump during periods of low ambient conditions and during
domestic hot water (DHW) production.
• Ensure the Hydro Unit and the connecting water pipes are
installed in a location that is not exposed to low ambient
temperatures which could result in the water circuit freezing.
• The system operation is designed around a closed water circuit.
Do not use an open circuit design.
• Please turn on the main power supply to up to 12 hours before the
system is started and ensure the power remains switched on for
the period of use.
9-EN
10-EN
Summary of Contents for HWT-1101XWHM3W-E
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