10
MMD-AP___1HF2UL
E15-3S2
6-2. Case of MCY model
(*1) The minimum piping length should set to the following figure by outside air temperature.
(*2) Refer to [
■
Use conditions] for Outside air unit temperature.
◆
Please refer to “Outdoor Unit’s Installation Manual” except the above contents.
Allowable value
Pipes
(ft)
(m)
Piping Length
Total extension of pipe (liquid pipe, real length)
328
100
L4
Furthest piping length
(=Max.length of main pipe)
Real length
Max
328
100
L4
Min (*1)
164/66
50/20
Equivalent length
410
125
Max equivalent length of furthest piping from 1st branching Li
‒
‒
Max real length of indoor unit connecting pipe
‒
‒
Height
Difference
Height between indoor and outdoor units H3
Upper outdoor unit
164
50
Lower outdoor unit
9
3
Height between indoor units H2
‒
‒
Case of All Outside Air connection to Side Blow SMMS-e
The combination which can connect Outside Air Unit is only the 1:1 combination of MCY-MAP0487HS-UL and
MMD-AP0481HF2UL.
Other combination is not permitted.
Correct
Incorrect
Allowable length/height difference of refrigerant piping (Case of All Outside Air)
CAUTION
Length and height of refrigerant piping keep the limitation blow.
If installed in out of the limitation, there is a possibility that heat-exchanger in Outdoor unit will burst and leak a refrigerant gas, for freezing heat-exchanger by shortage
of defrosting capacity.
Outdoor unit
Height difference between
an outside air unit and an
outdoor unit
H3
Outside air unit
Main
pipe
L4
No restrictions (Operation permission)
Piping length 20 m or more
Piping length 50 m or more
No operation permitted
Outside air unit temp. [°F] (*2)
Outdoor unit temp. [°F]
50
-13
-4
5
14
23
32
41
50
41
32
23
14
