Securing Installation And Service Space; Checking The Installation Site; Installing Bc Controller; Checking The Accessories With Bc Controller - Mitsubishi Electric CMB-PW202V-J Installationshandbuch

1. For hanging from the ceiling [Fig. 2.2.1] (P.2)
• Provide an inspection hole 450 mm square in the ceiling surface as shown in
[Fig. 2.2.1] (P.2).
• Install the unit in a suitable location (such as in the ceiling of a corridor or in the
bathroom etc) away from places regularly occupied. Avoid installing in the center
of a room.
• Ensure a pull out strength of at least 60 kg per bolt for hanging bolts.
• Be sure to install BC controllers level.
Warning:
Be sure to install the unit in a place that can sustain the entire weight.
If there is a lack of strength, it may cause the unit to fall down, resulting in an
injury.
Caution:
• Be sure to install the unit level.
• Install the unit in a location where the noise from the unit will not be a
problem. (Install indoor unit and BC controller at least 5 m away from
each other when installed in a space with low background noise, e.g.,
hotel rooms).
• Install the unit in a suitable location (such as in the ceiling of a corridor
or in the bathroom etc) away from places regularly occupied. Avoid in-
stalling in the center of a room.

2.3. Securing installation and service space

1. For hanging from the ceiling
(This is a reference view showing the least installation space.)
[Fig. 2.3.1] (P.2)
<A> Top view <B> Front view
A Inspection hole
B On the side of outdoor unit piping
C Control box
D On the side of indoor unit piping
E On the side of indoor unit piping
*1 Dimensions with which pipe connection can be handled at site
Model name A
CMB-PW202V-J 648

2.4. Checking the installation site

Check that the difference of elevation between indoor and outdoor units and the
length of refrigerant piping are within the following limitations.
1. CMB-PW202J (In the case the outdoor unit is 14-hp (P350 model) or less.)
[Fig. 2.4.1] (P.2)
A Outdoor unit
C Indoor unit
E Less than H=50 m (when the outdoor unit is higher than the indoor unit)
F Less than H1=40 m (when the outdoor unit is lower than the indoor unit)
G Less than 110 m
I Less than h1=15 m (10 m or less for 200, 250 unit type)
J Less than h2=15 m

3. Installing BC controller

3.1. Checking the accessories with BC con-
troller
The following items are supplied with each BC controller.
Item
1
Drain hose
2
Tie band
3 Hose band
4 Refrigerant connection pipe
( Indoor unit/PWFY : cooling/heating )
Connection No. = 0
( PWFY : heating )
Connection No. = 1
B
-
B BC controller
D PWFY unit
H Less than 40 m
Qty
1
1
1
11
Item
Total piping length
Longest piping length
Between outdoor unit and
BC controller
Between indoor units and BC controller
Between
Above outdoor unit
indoor and
outdoor units
Below outdoor unit
Between indoor units and BC controller
Between indoor units
Notes:
*1 Refer to "Restrictions on piping length" on P. 3.
*2 Please refer to the figure "Distance between BC controller and farthest
Indoor unit" when the distance between BC controller and farthest in-
door unit exceeds 40 m. (Not applicable to the P250 model indoor unit)
*3 The values in the parentheses show the maximum piping length to be
followed when the connection capacity of the indoor unit is 200 or more.
*4 Indoor units that are connected to the same branch joint cannot be simul-
taneously operated in different operation modes.
Distance between BC controller
and farthest indoor unit
70
60
50
40
30
20
10
0
0 5 10 15
Height difference between
BC controller and farthest
indoor unit (m)

3.2. Installing BC controllers

Installing hanging bolts
Install locally procured hanging bolts (threaded rod) following the procedure given
in the figure. The hanging bolt size is ø10 (M10 screw).
To hang the unit, use a lifting machine to lift and pass it through the hanging bolts.
Suspension bracket has an oval hole. Use a large diameter washer.
[Fig. 3.2.1] (P.3)
1 Hanging method
A: Min.30 mm
A Hanging bolt ø10 (field supply)
s Be sure to install the BC controllers level. Installing obliquely may cause
a risk of drain leakage. Use a level to check the unit's level. If it is oblique,
loosen the fixing nut and make an adjustment.
Caution:
Be sure to install the unit body level.
(Unit: m)
Piping portion Allowable value
Not to exceed the
A+B+C+D+E+a
maximum refriger-
+b+c+d+e+f+g
ant piping length *1
165 m or less
A+C+D+E+g/
(Equivalent length
A+B+c
of 190 m or less)
A Below 110
C+D+E+F+g/
Below 40 *2
B+c
H Below 50
H1 Below 40
Below 15
h1
(Below 10)*3
Below 15
h2
(Below 10)*3
B Washer (field supply)
7