Mitsubishi Electric BDT CITY MULTI Installation And Pre-Commissioning Booklet page 28

S series outdoor unit mounting
4. Outdoor Installation
PUMY-P-V(Y)KM-A(-BS)
4-1. Requirement on installation site
4. Outdoor Installation
- 4 - 1 . 1 G e n r e l a c
A. Avoid locations exposed to direct sunlight or other sources
of heat.
B. Select a location from which noise emitted by the unit will
not inconvenience neighbouring properties.
C. Select a location permitting easy wiring and pipe access to
the power source and indoor unit.
D. Avoid locations where combustible gases may leak, be
produced, flow, or accumulate.
E. Note that water may drain from the unit during operation.
F. Select a level location that can bear the weight and
vibration of the unit.
G. Avoid locations where the unit can be covered by snow. In
areas where heavy snow fall is anticipated, special
precautions such as raising the installation location or
installing a hood on the air intake must be taken to prevent
the snow from blocking the air intake or blowing directly
against it. This can reduce the airflow and a malfunction
may result.
H. Avoid locations exposed to oil, steam, or sulfuric gas.
I. Use the transportation handles of the outdoor unit to
transport the unit. If the unit is carried from the bottom,
hands or fingers may be pinched.
4-1-2. Installation at windy location
When installing the outdoor unit on a rooftop or other location
unprotected from the wind, situate the air outlet of the unit so
that it is not directly exposed to strong winds. Strong wind
entering the air outlet may impede the normal airflow and a
malfunction may result.
The following shows two examples of precautions against
strong winds.
Install an optional air guide if the unit is installed in a
location where strong winds may directly enter the
air outlet (Fig. 4-1-2a).
Air guide
Position the unit so that the air outlet blows perpendicularly
to the seasonal wind direction, if possible (Fig. 4-1-2b).
Wind direction
Fig. 4-1-2a
28
a t u o i n
Fig. 4-1-2b
- 4 - 1 . 3 F o u n d t a o i n
A. Be sure to install the unit in a sturdy, level surface to
prevent rattling noises during operation (see Fig. 4-1-3).
B. Foundation specifications are as follows.
Thickness of concrete Weight-bearing capacity
120 [4-3/4"] 320 kg [706lbs]
C. Make sure that the length of the foundation bolt is within 30
mm [1-3/16"] of the bottom surface of the base.
D. Secure the base of the unit firmly with four-M10 [3/8"]
foundation bolts in sturdy locations.
Warning:
A. The foundation base should be strong enough to support
the outdoor unit otherwise it may fall down and cause
damage or injuries.
B. The unit must be installed according to the instructions in
order to minimise the risk of damage from earthquakes,
storms, or strong winds.
M10 (3/8") bolt
Base
As long as possible
Vent
600 Min. 475
[23-5/8"] [18-23/32"]
Min. 25
[1"]
[8-7/8"]
Fig. 4-1-3
G10 2nd
mm
[in.]
Foundation bolt Bolt length
M10 [3/8"] 70 [2-25/32"]
(mm [in.])
600
[23-5/8"]
225 225
[8-7/8"]
1050
[41-11/32"]