HRX-OM-L014
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HRGC001-A HRGC002-A HRGC005-A
1
st
edition : Jun. 2007
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-4
3.2.2 Location
Installation of multiple units
Keep sufficient space in between so that the vented air from the next unit will not be taken
in.
Installation Area Ventilation (only for HRGC00
∗
-A
∗
)
1. Facility having a large installation area (that can vent the air naturally)
Make an air vent on a wall at a high level and another air vent on a wall at a low level, to
allow for adequate airflow.
2. Facility having a small installation area (that can not vent the air naturally)
Make a forced air exhaust vent on a wall at a high level and an air vent on a wall at a
low level.
3. Air ventilation using a ducting.
If it is impossible to radiate the heat in the installation area, or the installation is under air
conditioning, make a duct for heat radiation on the air vent OUT of the unit.
At this time, do not mount the inlet of the duct (flange) directly to the air vent of the unit,
and keep a space larger than the diameter of the duct.
Additionally, consider the resistance of the duct when making the air vent port for the
duct.
Table 3-1 Amount of radiation and required ventilation
Required ventilation amount m
3
/min
Model
Heat Radiated
kW
Differential temp. of 3
o
C
between inside and outside of
installation area
Differential temp. of 6
o
C
between inside and outside
of installation area
HRGC001-A
Approx. 4kW
70
40
HRGC002-A
Approx. 4kW
70
40
HRGC005-A
Approx. 8kW
140
70
Do not install in a location which is subject to any of the
conditions in 3.2.1
The unit radiates heat from the air vent of the fan.
If the unit is left with insufficient air ventilation, internal temperature will
exceed 40
o
C, which is overload, and affect the performance and life of the
unit. To ease the increase of internal temperature, be sure to vent the air
following instructions below.
