• This interface is to connect Mr. Slim inverter outdoor unit of MITSUBISHI ELECTRIC to local applications. Please check the following when designing the local system.
• MITSUBISHI ELECTRIC does not take any responsibility on the local system design. Therefore, MITSUBISHI ELECTRIC does NOT take any responsibility on the failure
(including outdoor unit) caused by local AHU and system design.
• Conformity of regulations and laws must be confirmed on the system on your side.
7.1. Air flow volume
Standard air flow volume
Model capacity of outdoor unit
ZRP
35
50
60
71
100
125
140
200
250
P
–
–
–
–
–
–
–
200
250
SHW
–
–
–
80
112
140
–
230
–
Maximum air volume
[m³/min]
12.3
18
21
24
33.6
42
48
67.2
81
[m³/h]
738
1080
1260
1440
2016
2520
2880
4032
4860
Minimum air volume
[m³/min]
6.2
8.6
10.5
12.2
16.3
21.5
23.0
32.6
37.8
[m³/h]
372
516
630
732
978
1290
1380
1956
2268
Make sure to keep the air flow volume within the limits of maximum and minimum below.
(1) Maximum air volume
Step mode
Number of
outdoor unit
Capacities of the
connected outdoor units
Maximum air volume
Manual
2-6
The same
500% of selected outdoor unit's maximum standard air volume
*1
Different
If smaller capacity outdoor unit's rated heating capacity is under 20% of total
heating capacity, 500% of bigger capacity outdoor unit's maximum standard air
volume is allowable.
If smaller capacity outdoor unit's rated heating capacity is 20% or more of total
heating capacity, 500% of smaller capacity outdoor unit's maximum standard air
volume is allowable.
1
–
200% of selected outdoor unit's maximum standard air volume
Auto
2-5
–
500% of the smallest capacity outdoor unit's maximum standard air volume
1
–
200% of selected outdoor unit's maximum standard air volume
*1. 600% of selected outdoor unit's maximum standard air volume is available ONLY when 6 same capacity outdoor units are connected.
Note:
•
When multiple outdoor units are connected, basically select one interlaced heat exchanger which has multiple refrigerant circuit or multiple heat exchanger placed
in parallel to the air flow. If multiple heat exchangers placed in series with the air flow have to be used, maximum 2 heat exchanger in series are acceptable.
(2) Minimum air volume
Total amount of selected outdoor unit's minimum standard air volume is allowable.
7.2. Indoor heat exchanger
(1) Indoor heat exchanger volume
Make sure to keep the HEX capacity within the following range.
If the piping length is 30m or shorter, HEX capacity can be increased as follows.
Model capacity of outdoor unit
ZRP
35
50
60
71
100
125
140
200
250
P
–
–
–
–
–
–
–
200
250
SHW
–
–
–
80
112
140
–
230
–
Max. volume [cm
3
]
Pipe length
30m -
1050
1500
1800
2130
3000
3750
4200
6000
7500
20m
1350
1800
2700
3030
3900
4650
5100
7800
9300
10m
1650
2100
3600
3930
4800
5550
6000
9600
11100
Min. volume [cm
3
]
350
500
600
710
1000
1250
1400
2000
2500
Note: Calculate them by linear interpolation in case of other piping lengths not shown on this table.
(2) Diameter of header
With a bigger size header , the refrigerant flow velocity decreases and this disturbs the sufficient circulation of refrigerant oil. As a result, the refrigerant oil does not
flow properly and could cause a serious damege of compressor.
Use the pipe whose outside diameter is less than the value shown in the table below.
Model capacity of outdoor unit
ZRP
35
50
60
71
100
125
140
200
250
P
–
–
–
–
–
–
–
200
250
SHW
–
–
–
80
112
140
–
230
–
Max. diameter of header [mm]
{
19
{
28
(3) Withstanding pressure
Design pressure of outdoor unit is 4.15 MPa. Following must be satisfied for burst pressure of connecting application.
Burst pressure : More than 12.45 MPa (3 times more than design pressure)
(4) Contamination maintenance
1. Wash the inside of heat exchanger to keep it clean. Be sure to rinse not to leave flux. Do not use chlorine detergent when washing.
2. Be sure that the amount of contamination per unit cubic content of heat transfer pipe is less than the following amount.
Example) In case of ø9.52mm
Residual water : 0.6 mg/m, Residual oil : 0.5 mg/m, Solid foreign object : 1.8 mg/m
7. Requirement on local design
21
EN
