General Assist Technical Reference

R32 Multi-Split Indoor Unit Compatibility

Connectable indoor units and approved capacity combinations
Applicable outdoor units: AOTH24KBCA3, AOTH30KBTA4, AOTH36KBTA5 and AOTH45KBTA5
Quick answer: A multi-split selection is valid only when both checks pass: (1) every indoor model is listed as connectable to the selected outdoor unit, and (2) the indoor capacity classes exactly match one of the approved combinations in this article.
Do not select by total capacity alone. Two combinations with the same total may not both be approved. Match the individual capacity classes and the number of connected indoor units.

1. How to confirm a valid connection

1Identify the outdoor unit
Confirm the complete outdoor model number.
2Check indoor model compatibility
Each indoor model must show “Yes” in the compatibility table.
3Convert each indoor unit to its capacity class
Use the model number class: 07 = 7, 09 = 9, 12 = 12, 14 = 14, 18 = 18, 22 = 22 and 24 = 24.
4Match the exact combination
Find the same number of indoor units and the same capacity classes in the approved list for that outdoor unit.
5Check special duct limits
Apply the medium static pressure duct restrictions shown below.

2. Connectable indoor unit models

“Yes” means the indoor model may be used with that outdoor unit, subject to an approved capacity combination. “No” means it must not be connected.
Indoor typeIndoor modelAOTH24KBCA3AOTH30KBTA4AOTH36KBTA5AOTH45KBTA5
Compact cassetteAUTH09KVLAYesYesYesYes
AUTH12KVLAYesYesYesYes
AUTH18KVLAYesYesYesYes
Mini ductARTH09KSLAPYesYesYesYes
ARTH12KSLAPYesYesYesYes
ARTH18KSLAPYesYesYesYes
Slim ductARTH09KLLAPYesYesYesYes
ARTH12KLLAPYesYesYesYes
ARTH18KLLAPYesYesYesYes
Medium static pressure ductARTH18KMTAPYesYesYesYes
ARTH24KMTAPNoYesYesYes
Wall mountedASTH07KMCDYesYesYesYes
ASTH09KMCDYesYesYesYes
ASTH12KMCDYesYesYesYes
ASTH14KMCDYesYesYesYes
ASTH09KMTDYesYesYesYes
ASTH12KMTDYesYesYesYes
ASTH18KMTDYesYesYesYes
ASTH22KMTDNoYesYesYes
ASTH24KMTDNoYesYesYes
ASTH24KMTENoYesYesYes
FloorAGTG09KVCAYesYesNoNo
AGTG12KVCAYesYesNoNo
AGTG14KVCAYesYesNoNo
CeilingABTH18KRTAYesYesYesYes
Key restrictions: ARTH24KMTAP and the 22/24-class wall units are not connectable to AOTH24KBCA3. Floor units AGTG09/12/14KVCA are connectable only to AOTH24KBCA3 and AOTH30KBTA4.

3. Indoor unit capacity classes

Capacity classNominal classModels in this manual
72.0 kWASTH07KMCD
92.5 kWAUTH09KVLA, ARTH09KSLAP, ARTH09KLLAP, ASTH09KMCD, ASTH09KMTD, AGTG09KVCA
123.5 kWAUTH12KVLA, ARTH12KSLAP, ARTH12KLLAP, ASTH12KMCD, ASTH12KMTD, AGTG12KVCA
144.0 kWASTH14KMCD, AGTG14KVCA
185.0 kWAUTH18KVLA, ARTH18KSLAP, ARTH18KLLAP, ARTH18KMTAP, ASTH18KMTD, ABTH18KRTA
226.0 kWASTH22KMTD
247.0 kWARTH24KMTAP, ASTH24KMTD, ASTH24KMTE
The combination tables use kBtu capacity classes, not the exact delivered system capacity. Final performance must be checked against the outdoor unit capacity tables and design conditions.
How to read the cards: 7 + 9 + 12 means one 7-class, one 9-class and one 12-class indoor unit. The order of the indoor units does not matter.

4. AOTH24KBCA3 — up to 3 indoor units

Select the number of connected indoor units, then match the capacity classes exactly. Each card shows the connected indoor classes and the combined total.
2 units connected
7 + 7
Total class: 14
7 + 9
Total class: 16
7 + 12
Total class: 19
7 + 14
Total class: 21
7 + 18
Total class: 25
9 + 9
Total class: 18
9 + 12
Total class: 21
9 + 14
Total class: 23
9 + 18
Total class: 27
12 + 12
Total class: 24
12 + 14
Total class: 26
12 + 18
Total class: 30
14 + 14
Total class: 28
14 + 18
Total class: 32
3 units connected
7 + 7 + 7
Total class: 21
7 + 7 + 9
Total class: 23
7 + 7 + 12
Total class: 26
7 + 7 + 14
Total class: 28
7 + 7 + 18
Total class: 32
7 + 9 + 9
Total class: 25
7 + 9 + 12
Total class: 28
7 + 9 + 14
Total class: 30
7 + 9 + 18
Total class: 34
7 + 12 + 12
Total class: 31
7 + 12 + 14
Total class: 33
7 + 14 + 14
Total class: 35
9 + 9 + 9
Total class: 27
9 + 9 + 12
Total class: 30
9 + 9 + 14
Total class: 32
9 + 9 + 18
Total class: 36
9 + 12 + 12
Total class: 33
9 + 12 + 14
Total class: 35
12 + 12 + 12
Total class: 36
* Medium static pressure duct restriction: For the starred three-unit combinations containing an 18 class, ARTH18KMTAP is not connectable. Another approved 18-class indoor type may be used.

5. AOTH30KBTA4 — up to 4 indoor units

Select the number of connected indoor units, then match the capacity classes exactly. Each card shows the connected indoor classes and the combined total.
2 units connected
7 + 22
Total class: 29
7 + 24
Total class: 31
9 + 22
Total class: 31
9 + 24
Total class: 33
12 + 22
Total class: 34
12 + 24
Total class: 36
14 + 18
Total class: 32
14 + 22
Total class: 36
14 + 24
Total class: 38
18 + 18
Total class: 36
18 + 22
Total class: 40
18 + 24
Total class: 42
22 + 22
Total class: 44
22 + 24
Total class: 46
24 + 24
Total class: 48
3 units connected
7 + 7 + 12
Total class: 26
7 + 7 + 14
Total class: 28
7 + 7 + 18
Total class: 32
7 + 7 + 22
Total class: 36
7 + 7 + 24
Total class: 38
7 + 9 + 9
Total class: 25
7 + 9 + 12
Total class: 28
7 + 9 + 14
Total class: 30
7 + 9 + 18
Total class: 34
7 + 9 + 22
Total class: 38
7 + 9 + 24
Total class: 40
7 + 12 + 12
Total class: 31
7 + 12 + 14
Total class: 33
7 + 12 + 18
Total class: 37
7 + 12 + 22
Total class: 41
7 + 12 + 24
Total class: 43
7 + 14 + 14
Total class: 35
7 + 14 + 18
Total class: 39
7 + 14 + 22
Total class: 43
7 + 14 + 24
Total class: 45
7 + 18 + 18
Total class: 43
7 + 18 + 22
Total class: 47
7 + 18 + 24
Total class: 49
9 + 9 + 9
Total class: 27
9 + 9 + 12
Total class: 30
9 + 9 + 14
Total class: 32
9 + 9 + 18
Total class: 36
9 + 9 + 22
Total class: 40
9 + 9 + 24
Total class: 42
9 + 12 + 12
Total class: 33
9 + 12 + 14
Total class: 35
9 + 12 + 18
Total class: 39
9 + 12 + 22
Total class: 43
9 + 12 + 24
Total class: 45
9 + 14 + 14
Total class: 37
9 + 14 + 18
Total class: 41
9 + 14 + 22
Total class: 45
9 + 14 + 24
Total class: 47
9 + 18 + 18
Total class: 45
9 + 18 + 22
Total class: 49
12 + 12 + 12
Total class: 36
12 + 12 + 14
Total class: 38
12 + 12 + 18
Total class: 42
12 + 12 + 22
Total class: 46
12 + 12 + 24
Total class: 48
12 + 14 + 14
Total class: 40
12 + 14 + 18
Total class: 44
12 + 14 + 22
Total class: 48
12 + 18 + 18
Total class: 48
14 + 14 + 14
Total class: 42
14 + 14 + 18
Total class: 46
4 units connected
7 + 7 + 7 + 7
Total class: 28
7 + 7 + 7 + 9
Total class: 30
7 + 7 + 7 + 12
Total class: 33
7 + 7 + 7 + 14
Total class: 35
7 + 7 + 7 + 18
Total class: 39
7 + 7 + 7 + 22
Total class: 43
7 + 7 + 7 + 24
Total class: 45
7 + 7 + 9 + 9
Total class: 32
7 + 7 + 9 + 12
Total class: 35
7 + 7 + 9 + 14
Total class: 37
7 + 7 + 9 + 18
Total class: 41
7 + 7 + 9 + 22
Total class: 45
7 + 7 + 9 + 24
Total class: 47
7 + 7 + 12 + 12
Total class: 38
7 + 7 + 12 + 14
Total class: 40
7 + 7 + 12 + 18
Total class: 44
7 + 7 + 12 + 22
Total class: 48
7 + 7 + 14 + 14
Total class: 42
7 + 7 + 14 + 18
Total class: 46
7 + 9 + 9 + 9
Total class: 34
7 + 9 + 9 + 12
Total class: 37
7 + 9 + 9 + 14
Total class: 39
7 + 9 + 9 + 18
Total class: 43
7 + 9 + 9 + 22
Total class: 47
7 + 9 + 9 + 24
Total class: 49
7 + 9 + 12 + 12
Total class: 40
7 + 9 + 12 + 14
Total class: 42
7 + 9 + 12 + 18
Total class: 46
7 + 9 + 14 + 14
Total class: 44
7 + 9 + 14 + 18
Total class: 48
7 + 12 + 12 + 12
Total class: 43
7 + 12 + 12 + 14
Total class: 45
7 + 12 + 12 + 18
Total class: 49
7 + 12 + 14 + 14
Total class: 47
7 + 14 + 14 + 14
Total class: 49
9 + 9 + 9 + 9
Total class: 36
9 + 9 + 9 + 12
Total class: 39
9 + 9 + 9 + 14
Total class: 41
9 + 9 + 9 + 18
Total class: 45
9 + 9 + 9 + 22
Total class: 49
9 + 9 + 12 + 12
Total class: 42
9 + 9 + 12 + 14
Total class: 44
9 + 9 + 12 + 18
Total class: 48
9 + 9 + 14 + 14
Total class: 46
9 + 12 + 12 + 12
Total class: 45
9 + 12 + 12 + 14
Total class: 47
9 + 12 + 14 + 14
Total class: 49
12 + 12 + 12 + 12
Total class: 48

6. AOTH36KBTA5 — up to 5 indoor units

Select the number of connected indoor units, then match the capacity classes exactly. Each card shows the connected indoor classes and the combined total.
2 units connected
7 + 24
Total class: 31
9 + 22
Total class: 31
9 + 24
Total class: 33
12 + 22
Total class: 34
12 + 24
Total class: 36
14 + 22
Total class: 36
14 + 24
Total class: 38
18 + 18
Total class: 36
18 + 22
Total class: 40
18 + 24
Total class: 42
22 + 22
Total class: 44
22 + 24
Total class: 46
24 + 24
Total class: 48
3 units connected
7 + 7 + 14
Total class: 28
7 + 7 + 18
Total class: 32
7 + 7 + 22
Total class: 36
7 + 7 + 24
Total class: 38
7 + 9 + 12
Total class: 28
7 + 9 + 14
Total class: 30
7 + 9 + 18
Total class: 34
7 + 9 + 22
Total class: 38
7 + 9 + 24
Total class: 40
7 + 12 + 12
Total class: 31
7 + 12 + 14
Total class: 33
7 + 12 + 18
Total class: 37
7 + 12 + 22
Total class: 41
7 + 12 + 24
Total class: 43
7 + 14 + 14
Total class: 35
7 + 14 + 18
Total class: 39
7 + 14 + 22
Total class: 43
7 + 14 + 24
Total class: 45
7 + 18 + 18
Total class: 43
7 + 18 + 22
Total class: 47
7 + 18 + 24
Total class: 49
9 + 9 + 9
Total class: 27
9 + 9 + 12
Total class: 30
9 + 9 + 14
Total class: 32
9 + 9 + 18
Total class: 36
9 + 9 + 22
Total class: 40
9 + 9 + 24
Total class: 42
9 + 12 + 12
Total class: 33
9 + 12 + 14
Total class: 35
9 + 12 + 18
Total class: 39
9 + 12 + 22
Total class: 43
9 + 12 + 24
Total class: 45
9 + 14 + 14
Total class: 37
9 + 14 + 18
Total class: 41
9 + 14 + 22
Total class: 45
9 + 14 + 24
Total class: 47
9 + 18 + 18
Total class: 45
9 + 18 + 22
Total class: 49
9 + 18 + 24
Total class: 51
12 + 12 + 12
Total class: 36
12 + 12 + 14
Total class: 38
12 + 12 + 18
Total class: 42
12 + 12 + 22
Total class: 46
12 + 12 + 24
Total class: 48
12 + 14 + 14
Total class: 40
12 + 14 + 18
Total class: 44
12 + 14 + 22
Total class: 48
12 + 14 + 24
Total class: 50
12 + 18 + 18
Total class: 48
12 + 18 + 22
Total class: 52
12 + 18 + 24
Total class: 54
14 + 14 + 14
Total class: 42
14 + 14 + 18
Total class: 46
14 + 14 + 22
Total class: 50
14 + 14 + 24
Total class: 52
14 + 18 + 18
Total class: 50
18 + 18 + 18
Total class: 54
4 units connected
7 + 7 + 7 + 7
Total class: 28
7 + 7 + 7 + 9
Total class: 30
7 + 7 + 7 + 12
Total class: 33
7 + 7 + 7 + 14
Total class: 35
7 + 7 + 7 + 18
Total class: 39
7 + 7 + 7 + 22
Total class: 43
7 + 7 + 7 + 24
Total class: 45
7 + 7 + 9 + 9
Total class: 32
7 + 7 + 9 + 12
Total class: 35
7 + 7 + 9 + 14
Total class: 37
7 + 7 + 9 + 18
Total class: 41
7 + 7 + 9 + 22
Total class: 45
7 + 7 + 9 + 24
Total class: 47
7 + 7 + 12 + 12
Total class: 38
7 + 7 + 12 + 14
Total class: 40
7 + 7 + 12 + 18
Total class: 44
7 + 7 + 12 + 22
Total class: 48
7 + 7 + 12 + 24
Total class: 50
7 + 7 + 14 + 14
Total class: 42
7 + 7 + 14 + 18
Total class: 46
7 + 7 + 14 + 22
Total class: 50
7 + 7 + 14 + 24
Total class: 52
7 + 7 + 18 + 18
Total class: 50
7 + 9 + 9 + 9
Total class: 34
7 + 9 + 9 + 12
Total class: 37
7 + 9 + 9 + 14
Total class: 39
7 + 9 + 9 + 18
Total class: 43
7 + 9 + 9 + 22
Total class: 47
7 + 9 + 9 + 24
Total class: 49
7 + 9 + 12 + 12
Total class: 40
7 + 9 + 12 + 14
Total class: 42
7 + 9 + 12 + 18
Total class: 46
7 + 9 + 12 + 22
Total class: 50
7 + 9 + 12 + 24
Total class: 52
7 + 9 + 14 + 14
Total class: 44
7 + 9 + 14 + 18
Total class: 48
7 + 9 + 14 + 22
Total class: 52
7 + 9 + 14 + 24
Total class: 54
7 + 9 + 18 + 18
Total class: 52
7 + 12 + 12 + 12
Total class: 43
7 + 12 + 12 + 14
Total class: 45
7 + 12 + 12 + 18
Total class: 49
7 + 12 + 14 + 14
Total class: 47
7 + 12 + 14 + 18
Total class: 51
7 + 14 + 14 + 14
Total class: 49
7 + 14 + 14 + 18
Total class: 53
9 + 9 + 9 + 9
Total class: 36
9 + 9 + 9 + 12
Total class: 39
9 + 9 + 9 + 14
Total class: 41
9 + 9 + 9 + 18
Total class: 45
9 + 9 + 9 + 22
Total class: 49
9 + 9 + 9 + 24
Total class: 51
9 + 9 + 12 + 12
Total class: 42
9 + 9 + 12 + 14
Total class: 44
9 + 9 + 12 + 18
Total class: 48
9 + 9 + 12 + 22
Total class: 52
9 + 9 + 12 + 24
Total class: 54
9 + 9 + 14 + 14
Total class: 46
9 + 9 + 14 + 18
Total class: 50
9 + 9 + 18 + 18
Total class: 54
9 + 12 + 12 + 12
Total class: 45
9 + 12 + 12 + 14
Total class: 46
9 + 12 + 12 + 18
Total class: 51
9 + 12 + 14 + 14
Total class: 49
9 + 12 + 14 + 18
Total class: 53
9 + 14 + 14 + 14
Total class: 51
12 + 12 + 12 + 12
Total class: 48
12 + 12 + 12 + 14
Total class: 50
12 + 12 + 12 + 18
Total class: 54
12 + 12 + 14 + 14
Total class: 52
12 + 14 + 14 + 14
Total class: 54
5 units connected
7 + 7 + 7 + 7 + 7
Total class: 35
7 + 7 + 7 + 7 + 9
Total class: 37
7 + 7 + 7 + 7 + 12
Total class: 40
7 + 7 + 7 + 7 + 14
Total class: 42
7 + 7 + 7 + 7 + 18
Total class: 46
7 + 7 + 7 + 7 + 22
Total class: 50
7 + 7 + 7 + 7 + 24
Total class: 52
7 + 7 + 7 + 9 + 9
Total class: 39
7 + 7 + 7 + 9 + 12
Total class: 42
7 + 7 + 7 + 9 + 14
Total class: 44
7 + 7 + 7 + 9 + 18
Total class: 48
7 + 7 + 7 + 9 + 22
Total class: 52
7 + 7 + 7 + 9 + 24
Total class: 54
7 + 7 + 7 + 12 + 12
Total class: 45
7 + 7 + 7 + 12 + 14
Total class: 47
7 + 7 + 7 + 12 + 18
Total class: 51
7 + 7 + 7 + 14 + 14
Total class: 49
7 + 7 + 7 + 14 + 18
Total class: 53
7 + 7 + 9 + 9 + 9
Total class: 41
7 + 7 + 9 + 9 + 12
Total class: 44
7 + 7 + 9 + 9 + 14
Total class: 46
7 + 7 + 9 + 9 + 18
Total class: 50
7 + 7 + 9 + 9 + 22
Total class: 54
7 + 7 + 9 + 12 + 12
Total class: 47
7 + 7 + 9 + 12 + 14
Total class: 49
7 + 7 + 9 + 12 + 18
Total class: 53
7 + 7 + 9 + 14 + 14
Total class: 51
7 + 7 + 12 + 12 + 12
Total class: 50
7 + 7 + 12 + 12 + 14
Total class: 52
7 + 7 + 12 + 14 + 14
Total class: 54
7 + 9 + 9 + 9 + 9
Total class: 43
7 + 9 + 9 + 9 + 12
Total class: 46
7 + 9 + 9 + 9 + 14
Total class: 48
7 + 9 + 9 + 9 + 18
Total class: 52
7 + 9 + 9 + 12 + 12
Total class: 49
7 + 9 + 9 + 12 + 14
Total class: 51
7 + 9 + 9 + 14 + 14
Total class: 53
7 + 9 + 12 + 12 + 12
Total class: 52
7 + 9 + 12 + 12 + 14
Total class: 54
9 + 9 + 9 + 9 + 9
Total class: 45
9 + 9 + 9 + 9 + 12
Total class: 48
9 + 9 + 9 + 9 + 14
Total class: 50
9 + 9 + 9 + 9 + 18
Total class: 54
9 + 9 + 9 + 12 + 12
Total class: 51
9 + 9 + 9 + 12 + 14
Total class: 53
9 + 9 + 12 + 12 + 12
Total class: 54
Medium static pressure duct limit: Up to two medium static pressure duct indoor units may be included in an approved combination.

7. AOTH45KBTA5 — up to 5 indoor units

Select the number of connected indoor units, then match the capacity classes exactly. Each card shows the connected indoor classes and the combined total.
2 units connected
12 + 24
Total class: 36
14 + 22
Total class: 36
14 + 24
Total class: 38
18 + 18
Total class: 36
18 + 22
Total class: 40
18 + 24
Total class: 42
22 + 22
Total class: 44
22 + 24
Total class: 46
24 + 24
Total class: 48
3 units connected
7 + 7 + 22
Total class: 36
7 + 7 + 24
Total class: 38
7 + 9 + 18
Total class: 34
7 + 9 + 22
Total class: 38
7 + 9 + 24
Total class: 40
7 + 12 + 18
Total class: 37
7 + 12 + 22
Total class: 41
7 + 12 + 24
Total class: 43
7 + 14 + 14
Total class: 35
7 + 14 + 18
Total class: 39
7 + 14 + 22
Total class: 43
7 + 14 + 24
Total class: 45
7 + 18 + 18
Total class: 43
7 + 18 + 22
Total class: 47
7 + 18 + 24
Total class: 49
7 + 22 + 22
Total class: 51
7 + 22 + 24
Total class: 53
7 + 24 + 24
Total class: 55
9 + 9 + 18
Total class: 36
9 + 9 + 22
Total class: 40
9 + 9 + 24
Total class: 42
9 + 12 + 14
Total class: 35
9 + 12 + 18
Total class: 39
9 + 12 + 22
Total class: 43
9 + 12 + 24
Total class: 45
9 + 14 + 14
Total class: 37
9 + 14 + 18
Total class: 41
9 + 14 + 22
Total class: 45
9 + 14 + 24
Total class: 47
9 + 18 + 18
Total class: 45
9 + 18 + 22
Total class: 49
9 + 18 + 24
Total class: 51
9 + 22 + 22
Total class: 53
9 + 22 + 24
Total class: 55
9 + 24 + 24
Total class: 57
12 + 12 + 12
Total class: 36
12 + 12 + 14
Total class: 38
12 + 12 + 18
Total class: 42
12 + 12 + 22
Total class: 46
12 + 12 + 24
Total class: 48
12 + 14 + 14
Total class: 40
12 + 14 + 18
Total class: 44
12 + 14 + 22
Total class: 48
12 + 14 + 24
Total class: 50
12 + 18 + 18
Total class: 48
12 + 18 + 22
Total class: 52
12 + 18 + 24
Total class: 54
12 + 22 + 22
Total class: 56
12 + 22 + 24
Total class: 58
12 + 24 + 24
Total class: 60
14 + 14 + 14
Total class: 42
14 + 14 + 18
Total class: 46
14 + 14 + 22
Total class: 50
14 + 14 + 24
Total class: 52
14 + 18 + 18
Total class: 50
14 + 18 + 22
Total class: 54
14 + 18 + 24
Total class: 56
14 + 22 + 22
Total class: 58
14 + 22 + 24
Total class: 60
14 + 24 + 24
Total class: 62
18 + 18 + 18
Total class: 54
18 + 18 + 22
Total class: 58
18 + 18 + 24
Total class: 60
4 units connected
7 + 7 + 7 + 14
Total class: 35
7 + 7 + 7 + 18
Total class: 39
7 + 7 + 7 + 22
Total class: 43
7 + 7 + 7 + 24
Total class: 45
7 + 7 + 9 + 12
Total class: 35
7 + 7 + 9 + 14
Total class: 37
7 + 7 + 9 + 18
Total class: 41
7 + 7 + 9 + 22
Total class: 45
7 + 7 + 9 + 24
Total class: 47
7 + 7 + 12 + 12
Total class: 38
7 + 7 + 12 + 14
Total class: 40
7 + 7 + 12 + 18
Total class: 44
7 + 7 + 12 + 22
Total class: 48
7 + 7 + 12 + 24
Total class: 50
7 + 7 + 14 + 14
Total class: 42
7 + 7 + 14 + 18
Total class: 46
7 + 7 + 14 + 22
Total class: 50
7 + 7 + 14 + 24
Total class: 52
7 + 7 + 18 + 18
Total class: 50
7 + 7 + 18 + 22
Total class: 54
7 + 7 + 18 + 24
Total class: 56
7 + 7 + 22 + 22
Total class: 58
7 + 7 + 22 + 24
Total class: 60
7 + 7 + 24 + 24
Total class: 62
7 + 9 + 9 + 9
Total class: 34
7 + 9 + 9 + 12
Total class: 37
7 + 9 + 9 + 14
Total class: 39
7 + 9 + 9 + 18
Total class: 43
7 + 9 + 9 + 22
Total class: 47
7 + 9 + 9 + 24
Total class: 49
7 + 9 + 12 + 12
Total class: 40
7 + 9 + 12 + 14
Total class: 42
7 + 9 + 12 + 18
Total class: 46
7 + 9 + 12 + 22
Total class: 50
7 + 9 + 12 + 24
Total class: 52
7 + 9 + 14 + 14
Total class: 44
7 + 9 + 14 + 18
Total class: 48
7 + 9 + 14 + 22
Total class: 52
7 + 9 + 14 + 24
Total class: 54
7 + 9 + 18 + 18
Total class: 52
7 + 9 + 18 + 22
Total class: 56
7 + 9 + 18 + 24
Total class: 58
7 + 12 + 12 + 12
Total class: 43
7 + 12 + 12 + 14
Total class: 45
7 + 12 + 12 + 18
Total class: 49
7 + 12 + 12 + 22
Total class: 53
7 + 12 + 12 + 24
Total class: 55
7 + 12 + 14 + 14
Total class: 47
7 + 12 + 14 + 18
Total class: 51
7 + 12 + 14 + 22
Total class: 55
7 + 12 + 14 + 24
Total class: 57
7 + 12 + 18 + 18
Total class: 55
7 + 12 + 18 + 22
Total class: 59
7 + 12 + 18 + 24
Total class: 61
7 + 14 + 14 + 14
Total class: 49
7 + 14 + 14 + 18
Total class: 53
7 + 14 + 14 + 22
Total class: 57
7 + 14 + 14 + 24
Total class: 59
7 + 14 + 18 + 18
Total class: 57
7 + 18 + 18 + 18
Total class: 61
9 + 9 + 9 + 9
Total class: 36
9 + 9 + 9 + 12
Total class: 39
9 + 9 + 9 + 14
Total class: 41
9 + 9 + 9 + 18
Total class: 45
9 + 9 + 9 + 22
Total class: 49
9 + 9 + 9 + 24
Total class: 51
9 + 9 + 12 + 12
Total class: 42
9 + 9 + 12 + 14
Total class: 44
9 + 9 + 12 + 18
Total class: 48
9 + 9 + 12 + 22
Total class: 52
9 + 9 + 12 + 24
Total class: 54
9 + 9 + 14 + 14
Total class: 46
9 + 9 + 14 + 18
Total class: 50
9 + 9 + 14 + 22
Total class: 54
9 + 9 + 14 + 24
Total class: 56
9 + 9 + 18 + 18
Total class: 54
9 + 9 + 18 + 22
Total class: 58
9 + 9 + 18 + 24
Total class: 60
9 + 12 + 12 + 12
Total class: 45
9 + 12 + 12 + 14
Total class: 47
9 + 12 + 12 + 18
Total class: 51
9 + 12 + 12 + 22
Total class: 55
9 + 12 + 12 + 24
Total class: 57
9 + 12 + 14 + 14
Total class: 49
9 + 12 + 14 + 18
Total class: 53
9 + 12 + 14 + 22
Total class: 57
9 + 12 + 14 + 24
Total class: 59
9 + 12 + 18 + 18
Total class: 57
9 + 14 + 14 + 14
Total class: 51
9 + 14 + 14 + 18
Total class: 55
9 + 14 + 14 + 22
Total class: 59
9 + 14 + 14 + 24
Total class: 61
9 + 14 + 18 + 18
Total class: 59
12 + 12 + 12 + 12
Total class: 48
12 + 12 + 12 + 14
Total class: 50
12 + 12 + 12 + 18
Total class: 54
12 + 12 + 12 + 22
Total class: 58
12 + 12 + 12 + 24
Total class: 60
12 + 12 + 14 + 14
Total class: 52
12 + 12 + 14 + 18
Total class: 56
12 + 12 + 14 + 22
Total class: 60
12 + 12 + 14 + 24
Total class: 62
12 + 12 + 18 + 18
Total class: 60
12 + 14 + 14 + 14
Total class: 54
12 + 14 + 14 + 18
Total class: 58
12 + 14 + 18 + 18
Total class: 62
5 units connected
7 + 7 + 7 + 7 + 7
Total class: 35
7 + 7 + 7 + 7 + 9
Total class: 37
7 + 7 + 7 + 7 + 12
Total class: 40
7 + 7 + 7 + 7 + 14
Total class: 42
7 + 7 + 7 + 7 + 18
Total class: 46
7 + 7 + 7 + 7 + 22
Total class: 50
7 + 7 + 7 + 7 + 24
Total class: 52
7 + 7 + 7 + 9 + 9
Total class: 39
7 + 7 + 7 + 9 + 12
Total class: 42
7 + 7 + 7 + 9 + 14
Total class: 44
7 + 7 + 7 + 9 + 18
Total class: 48
7 + 7 + 7 + 9 + 22
Total class: 52
7 + 7 + 7 + 9 + 24
Total class: 54
7 + 7 + 7 + 12 + 12
Total class: 45
7 + 7 + 7 + 12 + 14
Total class: 47
7 + 7 + 7 + 12 + 18
Total class: 51
7 + 7 + 7 + 12 + 22
Total class: 55
7 + 7 + 7 + 12 + 24
Total class: 57
7 + 7 + 7 + 14 + 14
Total class: 49
7 + 7 + 7 + 14 + 18
Total class: 53
7 + 7 + 7 + 14 + 22
Total class: 57
7 + 7 + 7 + 14 + 24
Total class: 59
7 + 7 + 7 + 18 + 18
Total class: 57
7 + 7 + 9 + 9 + 9
Total class: 41
7 + 7 + 9 + 9 + 12
Total class: 44
7 + 7 + 9 + 9 + 14
Total class: 46
7 + 7 + 9 + 9 + 18
Total class: 50
7 + 7 + 9 + 9 + 22
Total class: 54
7 + 7 + 9 + 9 + 24
Total class: 56
7 + 7 + 9 + 12 + 12
Total class: 47
7 + 7 + 9 + 12 + 14
Total class: 49
7 + 7 + 9 + 12 + 18
Total class: 53
7 + 7 + 9 + 12 + 22
Total class: 57
7 + 7 + 9 + 12 + 24
Total class: 59
7 + 7 + 9 + 14 + 14
Total class: 51
7 + 7 + 9 + 14 + 18
Total class: 55
7 + 7 + 9 + 14 + 22
Total class: 59
7 + 7 + 9 + 14 + 24
Total class: 61
7 + 7 + 9 + 18 + 18
Total class: 59
7 + 7 + 12 + 12 + 12
Total class: 50
7 + 7 + 12 + 12 + 14
Total class: 52
7 + 7 + 12 + 12 + 18
Total class: 56
7 + 7 + 12 + 12 + 22
Total class: 60
7 + 7 + 12 + 12 + 24
Total class: 62
7 + 7 + 12 + 14 + 14
Total class: 54
7 + 7 + 12 + 14 + 18
Total class: 58
7 + 7 + 12 + 18 + 18
Total class: 62
7 + 7 + 14 + 14 + 14
Total class: 56
7 + 7 + 14 + 14 + 18
Total class: 60
7 + 9 + 9 + 9 + 9
Total class: 43
7 + 9 + 9 + 9 + 12
Total class: 46
7 + 9 + 9 + 9 + 14
Total class: 48
7 + 9 + 9 + 9 + 18
Total class: 52
7 + 9 + 9 + 9 + 22
Total class: 56
7 + 9 + 9 + 9 + 24
Total class: 58
7 + 9 + 9 + 12 + 12
Total class: 49
7 + 9 + 9 + 12 + 14
Total class: 51
7 + 9 + 9 + 12 + 18
Total class: 55
7 + 9 + 9 + 12 + 22
Total class: 59
7 + 9 + 9 + 12 + 24
Total class: 61
7 + 9 + 9 + 14 + 14
Total class: 53
7 + 9 + 9 + 14 + 18
Total class: 57
7 + 9 + 9 + 18 + 18*
Total class: 61
7 + 9 + 12 + 12 + 12
Total class: 52
7 + 9 + 12 + 12 + 14
Total class: 54
7 + 9 + 12 + 12 + 18
Total class: 58
7 + 9 + 12 + 14 + 14
Total class: 56
7 + 9 + 12 + 14 + 18
Total class: 60
7 + 9 + 14 + 14 + 14
Total class: 58
7 + 9 + 14 + 14 + 18
Total class: 62
7 + 12 + 12 + 12 + 12
Total class: 55
7 + 12 + 12 + 12 + 14
Total class: 57
7 + 12 + 12 + 12 + 18
Total class: 61
7 + 12 + 12 + 14 + 14
Total class: 59
7 + 12 + 14 + 14 + 14
Total class: 61
9 + 9 + 9 + 9 + 9
Total class: 45
9 + 9 + 9 + 9 + 12
Total class: 48
9 + 9 + 9 + 9 + 14
Total class: 50
9 + 9 + 9 + 9 + 18
Total class: 54
9 + 9 + 9 + 9 + 22
Total class: 58
9 + 9 + 9 + 9 + 24
Total class: 60
9 + 9 + 9 + 12 + 12
Total class: 51
9 + 9 + 9 + 12 + 14
Total class: 53
9 + 9 + 9 + 12 + 18
Total class: 57
9 + 9 + 9 + 14 + 14
Total class: 55
9 + 9 + 9 + 14 + 18
Total class: 59
9 + 9 + 12 + 12 + 12
Total class: 54
9 + 9 + 12 + 12 + 14
Total class: 56
9 + 9 + 12 + 12 + 18
Total class: 60
9 + 9 + 12 + 14 + 14
Total class: 58
9 + 9 + 12 + 14 + 18
Total class: 62
9 + 9 + 14 + 14 + 14
Total class: 60
9 + 12 + 12 + 12 + 12
Total class: 57
9 + 12 + 12 + 12 + 14
Total class: 59
9 + 12 + 12 + 14 + 14
Total class: 61
12 + 12 + 12 + 12 + 12
Total class: 60
12 + 12 + 12 + 12 + 14
Total class: 62
Medium static pressure duct limit: Up to two medium static pressure duct indoor units may be included. For starred combination 7 + 9 + 9 + 18 + 18, only one medium static pressure duct indoor unit is permitted.

8. Important selection notes

  • Indoor units connected to the same multi-split outdoor unit must operate in the same mode at the same time; simultaneous heating and cooling is not available.
  • An outdoor unit can operate with fewer indoor units than its maximum port count only where the combination is specifically listed.
  • Do not assume an unlisted combination is acceptable because its total is within the apparent range.
  • Check the outdoor unit Design & Technical Manual for piping limits, branch connections, additional refrigerant, capacity correction and electrical requirements.
  • Product specifications and approved combinations may change. Confirm the current technical documentation before ordering or installation.
Source: Multi-split Indoor Units Design & Technical Manual DR_MU033ES_01, dated 12 June 2025. Connection information is taken from the model lineup and indoor unit connection pattern tables.