Combination With Outdoor Units; Selection Of Installation Site; Space Required Around Unit; Individual Installation - Mitsubishi Electric PUHY-YMF-B serie Installationshandbuch

4. Combination with outdoor units

A Super Y (PUHY-600/650/700/750YSMF-B) is produced when a Constant Capacity Unit (PUHN-200/250YMF-B) is combined with this unit (PUHY-
400/500YMF-B).
Refer to the installation manual that comes with the Constant Capacity Unit when this unit is used as a Super Y.
Super Y
PUHY-600YSMF-B
PUHY-650YSMF-B
PUHY-700YSMF-B
PUHY-750YSMF-B

5. Selection of installation site

Select space for installing outdoor unit, which will meet the following
conditions:
• no direct thermal radiation from other heat sources
• no possibility of annoying neighbors by noise from unit
• no exposition to strong wind
• with strength which bears weight of unit
• note that drain flows out of unit when heating
• with space for air passage and service work shown below
Because of the possibility of fire, do not install unit to the space where
generation, inflow, stagnation, and leak of combustible gas is ex-
pected.
• Avoid unit installation in a place where acidic solution and spray (sulfur)
are often used.
• When having cooling operation at an outside air temperature of be-
low 10°C, in order to obtain steady operation of unit, select an instal-
lation site not exposed directly to rain and snow, or install air outlet
and inlet ducts. (Refer to Page 11 .) Install the outdoor unit at the
same position on the same floor, or above, the indoor unit. (See the
figure at the right.)
• Do not use unit in any special environment where oil, steam and
sulfuric gas exist.

6. Space required around unit

6.1. Individual installation

Basic space required
A space of at least 250 mm is necessary at the back for inlet air. Taking
servicing, etc. from the rear into account, a space of about 450 mm
should be provided, the same as at the front.
A
B
C
<Top view>
A 250 mm or more
B 450 mm or more
C Front (outside of machine room)
D Top discharge (open in principle)
E Front inlet (open in principle)
F Rear inlet (open in principle)
6
Variable capacity unit Constant capacity unit
PUHN-200YMF-B
PUHY-400YMF-B
PUHN-250YMF-B
PUHN-200YMF-B
PUHY-500YMF-B
PUHN-250YMF-B
D
E
<Side view>
Installation restriction on outdoor unit when cooling operation is performed
when the outdoor air temperature is 10°C or lower
(Same floor as indoor unit, or floor above)
A 4 m or less
When inlet air enters from right and left sides of unit
C
D
F
A L
or more
1
B L
or more
2
C Front
D No restrictions on wall height (left and right)
Note:
• Wall heights (H) of the front and the back sides shall be within
overall height of unit.
• When the total height is exceeded, add the "h" dimension of the
figure above to L
1
Model L
1
PUHY-400
450
PUHY-500
A
A
B
C
A
<Side view>
and L in the table above.
2
L
2
250
B