Engineering Manual

A-182
Model MFZ-KJ09NA MFZ-KJ12NA MFZ-KJ15NA MFZ-KJ18NA
Item Unit Cooling Heating Cooling Heating Cooling Heating Cooling Heating
Total
Capacity Btu/h 9,000 11,000 12,000 13,000 15,000 18,000 17,000 21,000
SHF — 0.79 — 0.70 — 0.66 — 0.65 —
Input kW 0.570 0.750 0.890 0.900 1.120 1.140 1.350 1.730
Rated frequency Hz 33 45 46 53 48 57 56 62
Electrical circuit
Indoor unit MFZ-KJ09NA MFZ-KJ12NA MFZ-KJ15NA MFZ-KJ18NA
Power supply
V,
phase,
Hz
208/230, 1, 60
Input kW 0.025 0.025 0.027 0.047
Fan motor current A 0.26/0.23 0.26/0.23 0.28/0.35 0.48/0.43
Outdoor unit MUFZ-KJ09NAHZ MUFZ-KJ12NAHZ MUFZ-KJ15NAHZ MUFZ-KJ18NAHZ
Power supply
V,
phase,
Hz
208/230, 1, 60
Input kW 0.545 0.725 0.865 0.875 1.093 1.376 1.303 1.687
Comp. current A 2.21/2.00 3.09/2.79 3.75/3.39 3.81/3.45 4.05/3.63 5.38/4.86 5.05/4.54 6.87/6.22
Fan motor current A 0.41/0.37 0.40/0.36 0.41/0.37 0.40/0.36 1.21/1.09 1.24/1.12 1.21/1.09 1.24/1.12
Refrigerant circuit
Condensing
pressure
PSIG 377 331 401 360 382 414 388 441
Suction
pressure
PSIG 172 126 159 121 158 127 154 124
Discharge
temperature
˚F 141 117 150 142 149 166 150 178
Condensing
temperature
˚F 109 98 113 104 110 112 111 117
Suction
temperature
˚F 60 37 52 36 55 38 51 41
Comp. shell bottom
temperature
˚F 131 109 141 132 140 156 143 168
Ref. pipe length ft. 25
Refrigerant charge (R410A) 2 lb. 10oz 3 lb 5 oz.
Indoor unit
Intake air
temperature
DB ˚F 80 70 80 70 80 70 80 70
WB ˚F 67 60 67 60 67 60 67 60
Discharge air
temperature
DB ˚F 61 95 58 101 56 110 56 115
WB ˚F 60 — 57 — 55 — 55 —
Fan speed (High) rpm 1,080 1,080 1,080 1,080 1,110 1,200 1,240 1,200
Airow (High) CFM 354 (Wet) 417 354 (Wet) 417 366 (Wet) 470 417 (Wet) 470
Outdoor unit
Intake air
temperature
DB ˚F 95 47 95 47 95 47 95 47
WB ˚F — 43 — 43 — 43 — 43
Fan speed rpm 810 900 810 900 820 860 820 860
Airow CFM 1,074 1,202 1,074 1,202 1,653 1,730 1,653 1,730