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31-5000573 Rev. 2 7
ENGLISH
Installation Requirements Checklist
• Is the total indoor unit capacity within the allowable capacity ratio?
• Does the refrigerant line size and length fall into the allowable range per the design software?
• Are the refrigerant lines installed according to this installation guide? Are the branch fittings laying flat and have proper
clearance between them?
• Are all branch fittings installed on horizontal runs?
• Was additional refrigerant added per the design software?
• Was the system properly leak tested?
• Are the indoor units on a common circuit breaker?
• Is the power supply voltage within the acceptable range per the equipment name plates?
• Have all indoor and outdoor unit dip switches been properly set with the correct address?
INSTALLATION INSTRUCTIONS
Combinations and Options
1. Before installation, check if the model, power supply, pipe, wires, and parts purchased are correct.
2. Check to see if the indoor and outdoor units are properly matched according to the following table.
Outdoor Indoor
Combined
capacity range
Model(T)
Cooling Norminal
Capacity
kBtu/h
Combination Type
Maximum Number
of Connected Indoor
Units
Total indoor
capacity
kBtu/h
6 72 single 15 36~94
50%~130%
8 96 single 18 48~125
10 120 single 21 60~156
12 144 single 24 72~187
14 168 combination(6+8) 33 84~218
16 192 combination(8+8) 36 96~250
18 216 combination(10+8) 39 108~281
20 240 combination(10+10) 42 120~312
22 264 combination(10+12) 51 132~343
24 288 combination(12+12) 54 144~374
26 312 combination(8+8+10) 57 156~405
28 336 combination(10+10+8) 60 168~437
30 360 combination(10+10+10) 63 180~468
32 384 combination(12+10+10) 64 192~499
34 408 combination(12+12+10) 64 204~530
36 432 combination(12+12+12) 64 216~562
NOTES:
• The total indoor unit capacity should be less than or equal to the total outdoor unit capacity if all indoor units are
operating at the same time. The allowable ratio is 50 to 130%. Please consult the manufacturer if your needs exceed this
limitation.
• The total indoor unit capacity should be less than the total outdoor capacity if system operating conditions are below
23°F or above 105°F.
• All electrical conductors should be sized according to the load they will carry.
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