Initial Check - Hitachi KPI Manuel D'installation Et De Fonctionnement

13.1. INITIAL CHECK

Install the unit with a proper clearance around it for operation and
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maintenance working space, as shown in below figure.
Consider the air distribution from the unit to the space of the room,
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and select a suitable location so that uniform air temperature in the
room can be obtained.
KPI-(502~2002)E1E
−
Service
Space
Service Access Panel
KPI-(3002)H1E
−
Service Access Panel
Avoid obstacles which may hamper the air intake or the air discharge
−
flow.
Select a position for introducing the outside air where no exhaust or
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combustion gases will be sucked into the product and where it will
not be covered by snow.
Do not use this product at the cold are during winter time, with the
−
environmental condition that dewing may occur in the heat exchange
element (the case that the line connecting the protted points of the
outdoor/indoor temperature and humidity conditions crosses the
saturation curve on the psychometric diagram).
In such a case, heat the A (Outdoor Air) up to the A' point and make
−
the condition that the line connecting the protted points of the
outdoor/indoor temperature and humidity conditions does not cross
the saturation curve, and the total heat exchanger can be used.
INSTALLATION AND OPERATION MANUAL
The heating method for the A (Outdoor Air) must be determined
−
according to the local codes, etc.
The limit of the environmental conditions for using the total
heat exchanger are shown in the table below as an example,
at the outdoor air temperature 0 °C, -5 °C and -10 °C with the
Electrical
control box
indoor air temperature 30 °C.
In case that the indoor air humidity is higher than this condition
or the outdoor air humidity is extremely high, dewing may
Service Panel
occur.
The dew may grow up to the drop and the water may flow out
of the unit.
Temperature
Service
Space
13.2.MOUNTING OF INDOOR UNIT
1. Preparing the sling Bolts.
Electrical
control box
Rubber Isolator
2. Hanging the Unit.
Hang the suspension bracket on the anchor bolts and adjust in
−
such a way that the unit is installed horizontally.
Tighten up securely using double nuts in order to prevent
−
looseness.

CAUTION
When suspending the main unit from the ceiling, do not
handle it in such a way that force will be applied to the
control box.
Dry bulb (ºC)
Outdoor Air Indoor Air
Temperature
(DB) (DB)
0ºC 30ºC
-5ºC 30ºC
-10ºC 30ºC
Anchor Bolt (M10 or M12)
Nut
Washer
Nut
23
Saturation Curve
Indoor Air Indoor Air
Relative Absolute
Humidity Humidity
(%) (kg/kg)
47 0,0125
41 0,0105
34 0,0090