Engineering Manual

A-173
Model MSZ-HM12NA
-
U1
MSZ-HM12NA
-
U1
Item Unit Cooling Heating Cooling Heating
Total
Capacity Btu/h 12,000 12,200 12,000 14,400
SHF — 0.77 — 0.77 —
Input kW 1.210 0.990 1.210 0.990
Rated frequency Hz 89.0 90.0 69.0 77.0
Electrical circuit
Indoor unit MSZ-HM12NA MSZ-HM12NA
Power supply
V,
phase,
Hz
208/230, 1, 60
Input kW 0.022 0.023 0.022 0.023
Fan motor current A 0.24/0.22 0.25/0.23 0.24/0.22 0.25/0.23
Outdoor unit
MUZ-HM12NA
-
U1
MUZ-HM12NA
-
U8
Power supply
V,
phase,
Hz
208/230, 1, 60
Input kW 1.188 0.967 1.188 0.967
Comp. current A 5.61/5.08 4.56/4.13 4.39/3.97 5.41/4.89
Fan motor current A 0.27/0.24 0.30/0.27 0.34/0.31 0.31/0.28
Refrigerant circuit
Condensing pressure PSIG 429 347 389 397
Suction pressure PSIG 135 99 133 104
Discharge temperature ˚F 180 165 163 162
Condensing temperature ˚F 120 104 115 116
Suction temperature ˚F 60 41 56 35
Comp. shell bottom temperature ˚F 174 157 158 158
Ref. pipe length ft. 25
Refrigerant charge (R410A) 1 lb. 12 oz. 2 lb. 9 oz.
Indoor unit
Intake air temperature
DB ˚F 80 70 80 70
WB ˚F 67 60 67 60
Discharge air temperature
DB ˚F 56 108 56 108
WB ˚F 55 — 55 —
Fan speed (High) rpm 1,020 1,040 1,020 1,040
Airow (High) CFM 367 (Wet) 413 367 (Wet) 413
Outdoor unit
Intake air temperature
DB ˚F 95 47 95 47
WB ˚F — 43 — 43
Fan speed rpm 800 850 900 860
Airow CFM 1151 1225 1229 1172