Engineering Manual

A-174
Model MSZ-HM15NA MSZ-HM18NA MSZ-HM24NA
Item Unit Cooling Heating Cooling Heating Cooling Heating
Total
Capacity Btu/h 14,000 18,000 17,200 18,000 22,500 26,000
SHF — 0.78 — 0.86 — 0.89 —
Input kW 1.17 1.60 1.64 1.59 2.63 2.5
Rated frequency Hz 56.5 74 68 74 98 108
Electrical circuit
Indoor unit MSZ-HM15NA MSZ-HM18NA MSZ-HM24NA
Power supply
V,
phase,
Hz
208/230, 1, 60
Input kW 0.043 0.030 0.042 0.042 0.055
Fan motor current A 0.43/0.39 0.34/0.31 0.44/0.40 0.44/0.40 0.55/0.50
Outdoor unit
MUZ-HM15NA MUZ-HM18NA MUZ-HM24NA
Power supply
V,
phase,
Hz
208/230, 1, 60
Input kW 1.127 1.570 1.598 1.548 2.575 2.445
Comp. current A 4.91/4.44 7.11/6.43 7.22/6.53 7.11/6.43 11.11/10.05 10.56/9.55
Fan motor current A 0.41/0.37 0.40/0.36 0.41/0.37 0.40/0.36 1.05/0.95 1.05/0.95
Refrigerant circuit
Condensing pressure PSIG 396 427 423 361 404 403
Suction pressure PSIG 138 98 144 99 127 94
Discharge temperature ˚F 168 178 165 161 174 194
Condensing temperature ˚F 115 120 120 108 116 116
Suction temperature ˚F 61 31 54 35 54 44
Comp. shell bottom temperature ˚F 152 158 149 143 173 192
Ref. pipe length ft. 25
Refrigerant charge (R410A) 2 lb. 9 oz. 2 lb. 10 oz. 3 lb 9 oz.
Indoor unit
Intake air temperature
DB ˚F 80 70 80 70 80 70
WB ˚F 67 60 67 60 67 60
Discharge air temperature
DB ˚F 58 114 58 114 57 108
WB ˚F 56 — 56 — 56 —
Fan speed (High) rpm 1,280 1,140 1,140 1,140 1,250 1,250
Airow (High) CFM 498 (Wet) 463 562 (Wet) 625 632 (Wet) 702
Outdoor unit
Intake air temperature
DB ˚F 95 47 95 47 95 47
WB ˚F — 43 — 43 — 43
Fan speed rpm 910 900 910 900 810 810
Airow CFM 1,243 1,229 1,243 1,229 1,691 1,691