Hitachi RAS-(3-6)HVNC1(E) Service Manual page 42

2 Unit Installation
1. Drain hole (30x80)
2. Drain hole (3-30x80)
3 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 field-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
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 flow 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.
28
SMGB0087 rev.0 - 12/2013
Drain hole
1
Position for drain
boss (optional)
(30x80)
76 339 147
4-R8
Front side
INCORRECT
320
70 420
(460)
(560)
1
(30x80)
(228)
CORRECT
4-C10
20
R
70