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Air to Water Heat Pump
Installation Manual
•
If refrigerant gas has leaked during the installation work, ventilate the room
immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas may generate.
•
After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range,
noxious gas might generate.
•
Electrical work must be performed by a qualified electrician in accordance with the
Installation Manual.
Make sure the Air to Water Heat Pump uses a dedicated power supply.
An insufficient power supply capacity or inappropriate installation may cause fire.
•
Use the specified wires for wiring connect the terminals securely fix.
To prevent external forces applied to the terminals from affecting the terminals.
•
When the Air to Water Heat Pump cannot cool or heat water well, contact the dealer
from whom you purchased the Air to Water Heat Pump as refrigerant leakage is
considered as the cause.
In the case of repair that requires refill of refrigerant, ask service personnel about
details of the repair.
The refrigerant used in the Air to Water Heat Pump is harmless.
Generally, the refrigerant does not leak. However, if the refrigerant leaks in a room and a
heater or stove burner in the room catches fire, it may generate toxic gas.
When you ask service personnel for repairing refrigerant leakage, confirm that the leakage
portion has been completely repaired.
•
Conform to the regulations of the local electric company when wiring the power
supply.
Inappropriate grounding may cause electric shock.
•
Do not install the Air to Water Heat Pump in a location subject to a risk of exposure to
a combustible gas.
If a combustible gas leaks, and stays around the unit, a fire may occur.
•
Install the refrigerant pipe securely during the installation work before operating the
Air to Water Heat Pump.
If the compressor is operated with the valve open and without the refrigerant pipe, the
compressor sucks air and the refrigeration cycle is overpressurized, which may cause a burst
or injury.
•
For the refrigerant recovery work (collection of refrigerant from the pipe to the
compressor), stop the compressor before disconnecting the refrigerant pipe.
If the refrigerant pipe is disconnected while the compressor is working with the valve open,
the compressor sucks air and the refrigeration cycle is overpressurized, which may cause a
burst or injury.
CAUTION
New refrigerant air to water heat pump installation
•
This air to water heat pump adopts the new HFC refrigerant (R410A) which does not
destroy ozone layer.
• The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or
oil, and its pressure is approx. 1.6 times higher than that of refrigerant R22. Accompanied
with the new refrigerant, refrigerating oil has also been changed. Therefore, during
installation work, be sure that water, dust, former refrigerant, or refrigerating oil does not
enter the refrigerating cycle.
6-EN
Содержание HWS-1105H-E
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