Engineering Bulletin
MULTI F OUTDOOR UNIT | 31
Multi F Outdoor Unit Data
Due to our policy of continuous product innovation, some specications may change without notication.
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MULTI
F
MAX
MULTI
F
Rated Heating Combination Tables
PERFORMANCE DATA
Table 24: LMU18CHV with Non-Ducted, Ducted, and Mixed Indoor Units — Rated Heating Combination Table.
No. of
Indoor
Units
Indoor Unit Combination
(kBtu/h)
Room Capacity Total Capacity Input (W)
COP HSPF
IDU
1
IDU
2
IDU
3
IDU
4
Total
Unit 1
(Btu/h)
Unit 2
(Btu/h)
Unit 3
(Btu/h)
Unit 4
(Btu/h)
Minimum Rated Maximum
Min. Rated Max.
Btu/h kW Btu/h kW Btu/h kW
Non-Ducted Indoor Units
Two
Units
7 7 - - 14 8,540 8,540 - - 10,248 3.00 17,080 5.01 19,642 5.76 1,155 1,650 2,310 3.0 9.3
7 9 - - 16 8,540 10,980 - - 11,712 3.43 19,520 5.72 22,448 6.58 1,309 1,870 2,420 3.1 9.4
9 9 - - 18 11,000 11,000 - - 13,200 3.87 22,000 6.45 24,000 7.03 1,428 2,040 2,420 3.2 9.7
7 12 - - 19 8,105 13,895 - - 13,200 3.87 22,000 6.45 24,000 7.03 1,428 2,040 2,420 3.2 9.7
9 12 - - 21 9,429 12,571 - - 13,200 3.87 22,000 6.45 24,000 7.03 1,428 2,040 2,420 3.2 9.7
7 15 - - 22 7,000 15,000 - - 13,200 3.87 22,000 6.45 24,000 7.03 1,428 2,040 2,420 3.2 9.7
9 15 - - 24 8,250 13,750 - - 13,200 3.87 22,000 6.45 24,000 7.03 1,428 2,040 2,420 3.2 9.7
12 12 - - 24 11,000 11,000 - - 13,200 3.87 22,000 6.45 24,000 7.03 1,428 2,040 2,420 3.2 9.7
Ducted Indoor Units
Two
Units
9 9 - - 18 9,900 9,900 - - 11,880 3.48 19,800 5.80 24,000 7.03 1,386 1,980 2,420 2.9 9.7
9 12 - - 21 8,486 11,314 - - 11,880 3.48 19,800 5.80 24,000 7.03 1,386 1,980 2,420 2.9 9.7
12 12 - - 24 9,900 9,900 - - 11,880 3.48 19,800 5.80 24,000 7.03 1,386 1,980 2,420 2.9 9.7
Mixed Indoor Units
Two
Units
7 9 - - 16 8,113 10,431 - - 11,126 3.26 18,544 5.43 21,326 6.25 1,290 1,843 2,420 2.9 9.4
9 9 - - 18 10,450 10,450 - - 12,540 3.68 20,900 6.13 24,000 7.03 1,407 2,010 2,420 3.0 9.7
7 12 - - 19 7,700 13,200 - - 12,540 3.68 20,900 6.13 24,000 7.03 1,407 2,010 2,420 3.0 9.7
9 12 - - 21 8,957 11,943 - - 12,540 3.68 20,900 6.13 24,000 7.03 1,407 2,010 2,420 3.0 9.7
9 15 - - 24 7,838 13,063 - - 12,540 3.68 20,900 6.13 24,000 7.03 1,407 2,010 2,420 3.0 9.7
12 12 - - 24 10,450 10,450 - - 12,540 3.68 20,900 6.13 24,000 7.03 1,407 2,010 2,420 3.0 9.7
1
Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping.
0 ft. level difference between outdoor and indoor units.
2
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet
bulb (WB), and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
3
Wiring cable size must comply with the applicable local and national codes.
4
The specification may be subject to change without prior notice for purpose of improvement.
5
At least two indoor units should be connected.