Hitachi YUTAKI M RASM-2VRE Instruction Manual page 28

UNIT INSTALLATION
7.2 PLACE PROVISION
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Concrete foundation
• Foundation shall be on a level surface and it is
recommended to be 100-300 mm higher than ground level.
• Use M10 anchor bolts to fix the unit to the foundation.
(Foundation bolts, nuts and washers are not included, and
must be field supplied).
• Drain water might turn into ice on cold weather areas.
Therefore, when installing the unit on a roof or a veranda,
avoid the draining on a public area since it may become
slippery.
Concrete
• The unit is low-vibration model, but consider using some
floor reinforcement or anti-vibration mat/rubber when
vibration should occur due to weakness of attached surface.
• The foundation shall be unified with the floor slab. If not,
calculate the vibration proof of the installation of YUTAKI M
unit with the foundation in order to ensure strength against a
fall or for when the unit has to be moved.
• Drain water and rainwater are discharged from the bottom of
the unit when in operation as well as when stopped.
• Choose a location with good drainage or place a water drain
as in the drawing.
• Make the foundation flat and waterproof, as a water pool
may appear in case of, for instance, rain.
8 PMML0506 rev.2 - 01/2021
Base of
outdoor unit
Nut
Special
washer
(M12)
Anchor bolts
Filled mortar
• This is a low-profile product with a shallow depth. It may also
be able to fix on the wall as shown below when fixing only
with the foundation bolt does not seem sufficiently stable
depending on the conditions of the installation. (Metal fittings
must be field supplied).
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Fix unit to the wall
Both sides can be fixed to the wall.
(Metal fittings are field supplied)
1 Fix the unit onto the wall as indicated in the figure. (Stay field
supplied)
2 The foundation shall be strong enough to avoid any
deformation and vibration.
3 In order to prevent vibration transfer to the building, place
rubber material between the stay and the wall.
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C A U T I O N
Pay attention to the following for installation:
• Installation shall ensure that unit will not incline, vibrate, make noise
or fall down by a blast of wind or in an earthquake. Calculate quake-
resistance strength to ensure that installation is strong enough against
falling. Fix the unit with wires (field supplied) when installing in a location
without walls or windbreak and likely exposed to a blast of wind.
• Apply vibration-proof material where necessary.
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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.
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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.
Anti-vibration rubber
(field supplied)