Hitachi RAS-1.5WHVRP2E Bedienungsanleitung Seite 19

5.3 Installation place provision
1. Secure the outdoor unit with the anchor bolts.
Concrete Filled mortar
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)
Air inlet
Air inlet
Air outlet
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
Front side
PMML0640 rev.2 - 11/2024 - 1000019628
Base of outdoor unit
Nut
Special
washer (M12)
Anchor bolts
Pipe cover
Concrete Anchor bolt
Punched drain hole
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
60mm
Frame width (field supplied)
CORRECT
Outdoor unit
is stable
Frame
Recommended metal plate size (field-supplied)
✓ Material: Hot-rolled mild steel plate (SPHC)
✓ Plate thickness: 4.5T
6. REFRIGERANT PIPING & REFRIGERANT
CHARGE
!
CAUTION
Make sure that refrigerant piping installation complies with the
legislation EN378 and local legislation.
6.1 Piping materials
1. Prepare locally-supplied copper pipes.
2. Select the piping size with the correct thickness and
correct material which can have sufficient pressure
strength.
3. Select clean copper pipes. Make sure there is no dust
and moisture inside. Blow the inside of the pipes with
oxygen free nitrogen to remove any dust and foreign
materials before connecting pipes.

NOTE
• A system with no moisture or oil contamination will give
maximum performance and life-cycle compared to that of a
poorly prepared system. Take particular care to ensure all copper
piping is clean and dry internally.
57mm
Base width of outdoor unit
57mm
Base width of
outdoor unit
Metal plate
100mm or more
Metal plate
5
EN