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574B ECM AIR FLOW VS. TEMPERATURE RISE CHART
PERFORMANCE DATA (CONT)
ECONOMIZER/1-IN. FILTER PRESSURE DROP (in. wg)
UNIT COOLING SIZE
RATED GAS
INPUT RATE
(X 1000)
AIRFLOW SETTING
EAST SELECT™
(SCFM)
CALCULATED
TEMPERATURE
RISE
MIN.
TEMP
RISE
MAX
TEMP
RISE
MAX
DISCH.
TEMP
574B 024 40 800 36.5 20 50 175
574B 030 40 800 36.5 20 50 175
574B 030 60 1100 40 35 65 165
574B 036 60 1100 40 25 55 165
574B 036 90 1200 54 45 75 175
574B 042 60 1000 44 20 50 165
574B 042 90 1250 53 35 65 170
574B 048 90 1250 53 25 55 165
574B 048 115 1600 53 35 65 170
574B 048 130 1750 54 40 70 175
574B 060 90 1600 41 25 55 155
574B 060 115 1600 53 35 65 170
574B 060 130 1800 53 40 70 175
UNIT 574B PRESSURE DROP
024-036 0.20
042-060 0.25
HIGH ALTITUDE COMPENSATION
NATURAL GAS ONLY
ORIFICE CONVERSION — 3.5 in. wc
MANIFOLD PRESSURE*
* As the height above sea level increases, there is less oxygen per cubic ft of air.
Therefore, heat input rate should be reduced at higher altitudes.
†Orifices available through your Bryant distributor.
574B ECM WET COIL PRESSURE DROP
ALTITUDE (ft)
INPUT
(Btuh)
OUTPUT
(Btuh)
ORIFICE
NUMBER†
0-2000
40,000 31,000 #44
60,000 46,000 #38
90,000 70,000 #38
115,000 92,000 #33
130,000 103,000 #31
2001-6000
32,075 24,858 #48
48,547 37,219 #42
72,820 56,638 #42
90,094 72,075 #37
102,630 81,315 #34
UNIT
SIZE
STANDARD CFM
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100
024 0.005
0.007 0.010 0.012 0.015 ———————————
030 —
0.007 0.010 0.012 0.015 0.018 0.021 0.024 ————————
036
———0.019 0.023 0.027 0.032 0.037 0.042 0.047 ——————
042
————0.014 0.017 0.020 0.024 0.027 0.031 0.035 0.039 0.043 ———
048
——————0.027 0.032 0.036 0.041 0.046 0.052 0.057 0.063 0.068 —
060
—————————0.029 0.032 0.036 0.040 0.045 0.049 0.053
LIQUID PROPANE ONLY
ORIFICE CONVERSION — 3.5 in. wc
MANIFOLD PRESSURE*
ALTITUDE (ft)
INPUT
(Btuh)
OUTPUT
(Btuh)
ORIFICE
NUMBER†
0-2000
40,000 31,000 #50
57,000 43,720 #46
85,500 66,520 #46
115,000 92,000 #42
127,000 100,580 #41
2001-6000
33,834 26,221 #52
49,238 37,766 #48
73,856 57,461 #48
94,571 75,657 #44
101,284 80,214 #43