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Precautions of Usage
Precautions of Installation
Be sure to stop the operation and turn OFF the electric leakage breaker when you do maintenance.
Otherwise, you could be shocked or injured. Even if the GHP is stopped, the fan may automatically start
temporary run to protect units or maintain capacity. Be sure to turn OFF the electric leakage breaker when
you touch the inside of the outdoor or indoor units.
When more than 13 years or 30,000 running hours have passed since installation of the GHP outdoor unit,
serious accident might occur depending on usage profile. In such a case, be sure to consult with GHP
dealer.
Outdoor and indoor units can temporarily stop or have insufficient air conditioning performance to protect
units or maintain capacity, but the units automatically resume normal operation. In the meantime, fuel gas
or electricity consumption may temporarily increase. (For example, during defrosting.)
Leakage of oil or engine coolant could result in malfunction or secondary damage (contamination on house-
hold goods). If leakage should occur, consult with the GHP dealer.
Never install the outside unit at the indoor location.
Install the outdoor unit so that its exhaust gas does not flow into the room through the piping, intake/exhaust
port or ventilation port leading to the inside of the room. Always discharge the exhaust gas to the open air
at a location where the gas will not cause adverse effects on the surrounding area. Do not discharge the
exhaust gas into the catch basin or ditch.
If the outdoor unit is installed near the intake/exhaust port to the room, window or ventilation port, it could
cause gas poisoning or lack of oxygen.
Never share the same pipe for the exhaust drain for the outdoor unit and the exhaust water drain for the
indoor unit.
If exhaust gas flows into the building, it could cause gas poisoning or lack of oxygen.
Arrange the piping so that the exhaust gas in the exhaust drain is released into the atmosphere if :
a) The exhaust drain hose of the outdoor unit is connected to the catch basin or ditch with a lid.
b) The exhaust drain water of the outdoor unit is released at the same location as the drain water of the
indoor unit.
Otherwise, exhaust gas could flow into the room and cause gas poisoning or lack of oxygen.
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