Hitachi Set Free mini-HNRQ1 Series Installation & Maintenance Manual page 7

NOTICE
● Do not tread on the product or place sundries on the product.
● Do not place or put any material on the product or inside the product.
● Provide a strong and correct foundation so that:
A. The outdoor unit is not on an incline.
B. Abnormal sound does not occur.
C. The outdoor unit will not fall down due to a strong wind or earthquake.
NOTE:
● Please do not install indoor unit, outdoor unit, wired controller and wiring within 3m of strong
electromagnetic radiation appliance (For example: medical device).
● After a long time shut down, if you want to restart the appliance, please power the crankcase heating
band to work 12 hours prior to operation.
● Before switching on the outdoor unit, make sure that it is not covered by snow and ice.
● The heat pump air conditioner may not work properly if:
* The power of the transformer which supplies power is equal or less than the electric power of the
air conditioner.
* Power supply for high-power equipment is too close to the power wire of the air conditioner.
: (Ex) Lift, container crane, rectifier for electric railway, inverter power device, arc furnace,
Device*
electric furnace, large-sized induction motor and large-sized switch. It consumes a large
quantity of electrical power.
In the case mentioned above, the power wire of the air conditioner generates a large induced surge
voltage due to the abrupt change in the power consumption of the power equipment and the switch
action.
● Therefore, to protect the power supply to the system, before performing electric construction, please
carefully check the field installation specifications and standards.
● It is recommended to ventilate the room every 3 to 4 hours.
● Reduction in heat pump air conditioner heating capacity is observed due to the degradation of
outdoor environmental temperature. Therefore, in some low temperature areas, it is recommended
to use auxiliary heating device while installing heat pump air conditioner.
● Only a professional maintenance personnel can perform maintenance work for this air conditioner.
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