Hitachi UTOPIA RAS-3HVRC2 Bedienungsanleitung Seite 26

UNITS INSTALLATION
d) In case that upper side obstacles exist (serial units)
0 < L ≤ 1/2 H A ≥ 500
1/2 H < L ≤ H A ≥ 1000
0 < L ≤ 1/2 A ≥ 500
1/2 H < L ≤ H A ≥ 1000
g) Horizontal (multiple units)
0 < L ≤ 1/2 H A ≥ 100
1/2 H < L ≤ H A ≥ 200
≥ 1000
Do not stack more than two units in height. - Close gap (*) to avoid recirculating discharge air flow.
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Installing location where the unit will be exposed to strong wind
Follow the instructions below to install on
the rooftop or a location without surrounding
buildings, where strong wind is expected
against the product.
Choose a location where the outlet or inlet side
of the product will not be exposed to strong
wind.
When the outlet is exposed to strong wind:
Direct strong wind may cause lack of air flow
and adversely affect to the operation.
In case of blowing strong wind to air outlet
the wind guard (optional) is available to avoid
strong wind
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N O T E
• The wind guard must be set at annual cooling operation (in DSW2 switch 3).
• For ambient temperature ≤ 10ºC, it is recommended to set the wind guard at cooling operation.
6 PMML0548 rev.0 - 04/2020 - A10648790A
300
200
f) In case that surrounding wall exist (serial units)
L
A
≥ 250
≥ 250
≥ 250
≥ 2000
≥ 400
e) In case of front side and either of the sides are open (serial units)
0 < L ≤ 1/2 H A ≥ 200
1/2 H < L ≤ H A ≥ 350
h) Vertical (multiple units)
400
!
Excessive strong wind against the outdoor unit
outlet may cause inverse rotation and damage
the fan and motor.
Wind guard
≤ 300
1000
≥ 250
C A U T I O N
Wind guard model
Model Number of set required
WSP-264 1
400
250