York EA090, Техническое руководство

Страница: 7 / 20

036-21371-001-B-0203
Unitary Products Group 7
The capacities shown are gross ratings. For net capacities, determine the KW requirement of the supply air blower motor per the SUPPLY AIR BLOWER PER-
FORMANCE table. Convert KW to MBH by the following equation and deduct this equivalent heat from the gross cooling ratings.
Blower Motor Heat (MBH) = Blower Motor KW x 3.415
Apply the following correction factors to determine the unit performance at different CFM.
These ratings include the compressor KW and the following KW for the outdoor fan motor(s).
NOTE: Sensible capacity can never exceed total capacity. A higher
corrected sensible capacity indicates a dry coil, and it should be
reduced to the corrected total capacity.
Blower motor KW is not included. Refer to the SUPPLY AIR BLOWER PERFORMANCE table for the KW rating of the supply air blower motor at the design
conditions and add this power requirement to the KW rating.
TABLE 4: COOLING CAPACITY - EA090 (CONT.)
% Nominal Supply Air CFM 80 90 100 110 120
Total Capacity Correction Factor
Sensible Capacity Correction Factor
Kilowatt Correction Factor 0.963
0.935
0.981 0.981
0.965
0.992 1.000
1.000
1.000 1.015
1.049
1.008 1.030
1.098
1.019
Nominal Rating
86 83 80 77 74 71 68
72 85 10.2 52 45 38 31 24 - -
67 74 10.1 66 59 53 46 39 32 25
62 74 9.8 74 71 65 58 51 44 37
57 72 9.9 72 67 61 54 47 40 33
72 87 10.3 59 51 43 34 26 - -
67 76 10.2 73 67 59 51 42 34 26
62 75 9.9 75 74 72 64 56 48 39
57 73 10.0 73 71 68 60 51 43 35
72 88 10.4 66 57 47 38 28 - -
67 77 10.3 77 75 65 55 46 36 27
62 76 10.0 76 76 76 70 61 51 41
57 75 10.1 75 75 75 65 56 46 37
72 90 10.4 68 58 48 38 28 - -
67 79 10.3 79 76 66 56 46 36 25
62 78 10.0 78 78 78 70 60 50 40
57 77 10.1 77 77 76 66 56 46 36
72 93 10.3 70 60 49 38 27 - -
67 81 10.3 81 78 67 57 46 35 24
62 80 9.9 80 80 80 70 59 48 38
57 79 10.0 79 79 78 67 56 45 35
1 - These capacities are gross
ratings. For net capacity, deduct
air blower motor, MBh = 3.415 x
kW. Refer to the appropriate
Blower Performance Table for the
kW of the supply air blower motor.
2 - These ratings include the
condenser fan motors (total 1 kW)
and the compressor motors but not
the supply air blower motor.
3450
3600
2400
2850
3300
Air On
Evaporaor Coil
Temperature of Air on Condenser Coil
125°F
Total
Capacity
1
(MBh)
Total
Input
2
(kW)
Sensible Capacity (MBh)
CFM WB(°F)
Return Dry Bulb (°F)
Outdoor Unit Size 7-1/2 Ton
Outdoor Fan Motor KW - 60 HZ 0.83