Hitachi RAS-2WHVRP Instruction Manual page 19

UNITS INSTALLATION
7.3 INSTAllATION PlACE PROvISION
1 Secure the outdoor unit with the anchor bolts.
Concrete
Fix the outdoor unit to the anchor bolts by special washer of
factory-supplied accessory.
2 When installing the outdoor unit, fix the unit by anchor bolts.
Regarding the location of fixing holes.
M10 Hole for anchor bolt (Ø 12)
3 Example of fixing outdoor unit by anchor bolts.
A
Cut this portion when
this type of anchor
bolt is used. If not, it
is dificult to remove
the service cover
4 Provide an adequate drainage around the foundation. When
installing the unit on a roof or a veranda, drain water may
turn to ice in a cold morning. Therefore, avoid draining in an
area where people often use because it is slippery. In case
of installing such a place, provide the additional drainage
around the foundation.
Punched drain hole
for drain pipe
Punched drain hole
7 PMML0509 rev.0 - 02/2019
Base of
outdoor unit
Nut
Special
washer
(M12)
Anchor bolts
Filled mortar
Pipe cover
Front side
Concrete
Anchor bolt
Punched drain hole
Front side
5 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.
INCORRECT
Outdoor unit is
unstable
Frame
CORRECT
Outdoor unit
is stable
Frame
Recommended metal plate size (field-supplied)
- Material: Hot-rolled mild steel plate (SPHC)
- Plate thickness: 4.5T
57mm
Base width of
outdoor unit
60mm
Frame width
(field supplied)
57mm
Base width of
outdoor unit
Metal plate
100mm or more
Metal plate