Mitsubishi Electric CITY MULTI PURY-HP-TNU-A1 Manuel D'installation page 14

7. Installation location
Do not install the unit where combustible gas may leak.
- If combustible gas accumulates around the unit, fire or explosion may result.
・Note that refrigerant gas is heavier than air and will therefore tend to collect in low spots such as basements.
・When an indoor unit that draws in outside air exits near the outdoor unit, be careful not to affect the normal operation of the indoor unit.
・When the amount of drain water is excessive, drain water comes out of the outdoor unit along the panel during heating operation. Provide
sufficient space around the unit according to the instructions below.
・Installing the outdoor unit in an indoor space with small air intake windows may result in insufficient air flow. Install the unit where sufficient air
flow is available. When installing the unit outdoors, also ensure that sufficient air flow is maintained.
・Sufficient free space is required around the unit for maintenance, dissipation of heat from the unit, and dissipation of condensation heat. Select a
location where the following conditions are met. Not leaving enough free space around the unit can compromise the cooling/heating performance
of the unit.
・Select a space to install the outdoor unit in consideration of short-cycling caused by seasonal winds and winds that pass through tall buildings.
Particularly, when the unit is used in low ambient temperature conditions and is subject to outside winds or is affected by the surrounding walls
that can lead to short-cycling, take appropriate measures such as installing a snow hood. Depending on the installation conditions, more space or
other construction work than is specified here may be required. Conduct an air-flow analysis as necessary to ensure that the unit is operated
within the operation range beforehand.
7-1. Single unit installation
(1) When all walls are within their height limits*.
L
3
L
1
When the distance behind the unit (L
When the distance to the right or left (L
(2) When one or more walls exceed their height limits*.
When the wall(s) at the front and/or the
right/left exceed(s) their height limits
h
3
h
1
L
3
L
1
If the height of the walls around the unit exceeds the height limit, add half of the height that exceeds the limit (h
shown in the table below.
When the distance behind the unit (L
When the distance to the right or left (L
WT10508X02
L
2
) needs to be small
2
) needs to be small
3
When the wall at the rear exceeds its
height limit
h
2
L
2
) needs to be small
2
) needs to be small
3
* Height limit
Front/Right/Left/Rear Same height or lower than the overall height of the unit
Required minimum distance [mm (in)]
L (Front)
1
450 (17-3/4)
450 (17-3/4)
h
2
L
2
L
3
L
1
Required minimum distance [mm (in)]
L (Front)
1
450 (17-3/4) + h /2
1
450 (17-3/4) + h /2
1
GB-12
[mm (in)]
L (Rear) L (Right/Left)
2 3
100 (3-15/16) 50 (2)
300 (11-13/16) 15 (5/8)
When all walls exceed their height limits
h
3
h
1
L
3
L
3
L
1
/2-h /2) to L
1 3
L (Rear) L (Right/Left)
2 3
100 (3-15/16) + h /2 50 (2) + h
2
300 (11-13/16) + h /2 15 (5/8) + h
2
h
2
L
2
, L , and L as
1 2 3
/2
3
/2
3