Hitachi RAS-4-HNCE - Page 38

2. Unit Installation
24
SMGB0079 rev.0 - 01/2013
4 The whole of the base of the outdoor unit should be installed on a foundation. When using vibration-proof mat it should
also be positioned the same way. When installing the outdoor unit on a eld-supplied frame use metal plates to adjust
the frame width for stable installation as shown in Figure.
1. Outdoor unit is unstable
2. Frame
3. Outdoor unit is stable
4. Metal plate
A. 57 mm. Base width of outdoor unit
B. 60 mm Frame width (Field-supplied)
C. 100 mm or more Metal plate
• Recommended Metal Plate Size:
- (Field-Supplied) Material: Hot-Rolled Mild Steel.
- Plate (SPHC) Plate Thickness: 4.5 T
120
60
(560)
70
420
70
20
14
R
4-C10
320
(460)
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 ex-
pected against the product.
1 Choose a location where the outlet or inlet side of the product
will not be exposed to strong wind.
2 When the outlet is exposed to strong wind: Direct strong wind
may cause lack of air ow and adversely affect to normal
function.
C A U T I O N
Excessivestrongwindagainsttheoutdoorunitoutletmaycauseinverserotationanddamagethefanandmotor.