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Performance
Data
Table PD-7 – Centrifugal Fan Gas Unit Heater 80% Thermal Efficiency Performance Data
Model GCND/ GCND/ GCND/ GCND/ GCND/ GCND/ GCND/ GCND/ GCND/ GCND/
GCPD GCPD GCPD GCPD GCPD GCPD GCPD GCPD GCPD GCPD
Unit Size 010 012 015 017 020 022 025 030 035 040
Input
MBh 100 125 150 175 200 225 250 300 350 400
(kW) 29.3 36.6 43.9 51.2 58.6 65.9 73.2 87.8 102.5 117.1
Output
Btu 80 100 120 140 160 180 200 240 280 320
(kW) 23.4 29.3 35.1 41.0 46.9 52.7 58.6 70.3 82.0 93.7
Thermal Efficiency 80% 80% 80% 80% 80% 80% 80% 80% 80% 80%
Free Air Delivery
cfm 1,200 1,575 1,975 2,300 2,400 2,600 2,850 3,950 4,600 4,800
(cu. m/s) 0.566 0.743 0.932 1.086 1.133 1.227 1.345 1.864 2.171 2.266
Air Temperature Rise
°F 62 59 56 56 62 64 65 56 56 62
°C 34 33 31 31 34 36 36 31 31 34
Outlet Velocity
fpm 880 950 1030 1045 965 935 930 1080 1090 1000
(m/s) 4.47 4.83 5.23 5.31 4.90 4.75 4.72 5.49 5.54 5.08
Full Load Amps at 115V 5.9 7.4 8.2 8.2 12.8 12.8 12.8 12.8 16.2 16.2
Motor Data:
hp 1/4 1/30 1/20 1/20 3/4 3/4 3/4 3/4 1 1
(kW) 0.19 0.25 0.37 0.37 0.56 0.56 0.56 0.56 0.75 0.75
Type SPH SPH SPH SPH SPH SPH SPH SPH CS CS
rpm 1725 1725 1725 1725 1725 1725 1725 1725 1725 1725
Amps @ 115V 5.1 6.6 7.4 7.4 12.0 12.0 12.0 12.0 15.4 15.4
Notes:
1. Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet, input must be derated 4 percent for each 1,000 feet above sea level.
2. CS = Capacitor Start; SPH = Split Capacitor
3. Standard motors are 115/60/1 open drip-proof.
4. Unit amps are based on standing pilot units.
5. 0.2” maximum external static pressure.
Table PD-8 – Indoor Gas Duct Furnace Performance Data – Standard or High Efficiency
Models
GDND/GDPD/ Input Temp. P.D. Temp. P.D.
GLND/GLPD MAX MIN Output MIN. Rise In. of MAX. Rise In. of
Unit MBh MBh MBh cfm °F H2O cfm °F H2O
Size (kW) (kW) (Kw) (cu. m/s) (°C) (kPa) (cu.m/s) (°C) (Pascals)
010 100 50 80 929 80 0.12 2469 30 0.85
29.3 14.6 23.4 0.438 44 0.03 1.165 17 0.21
012 125 62.5 100 1157 80 0.13 3086 30 0.85
36.6 18.3 29.3 0.546 44 0.03 1.457 17 0.21
015 150 75 120 1389 80 0.15 3704 30 0.85
43.9 22.0 35.1 0.656 44 0.04 1.748 17 0.21
017 175 87.5 140 1620 80 0.14 4321 30 0.85
51.2 25.6 41.0 0.765 44 0.03 2.040 17 0.21
020 200 100 160 1852 80 0.14 4938 30 0.85
58.6 29.3 46.9 0.874 44 0.03 2.331 17 0.21
022 225 112.5 180 2083 80 0.14 5556 30 0.85
65.9 32.9 52.7 0.983 44 0.03 2.622 17 0.21
025 250 125 200 2315 80 0.14 6173 30 0.85
73.2 36.6 58.6 1.093 44 0.03 2.914 17 0.21
030 300 150 240 2778 80 0.13 7407 30 0.87
87.8 43.9 70.3 1.311 44 0.03 3.496 17 0.22
035 350 175 280 3241 80 0.13 8642 30 0.87
102.5 51.2 82.0 1.530 44 0.03 4.079 17 0.22
040 400 200 320 3704 80 0.14 9877 30 0.90
117.1 58.6 93.7 1.748 44 0.03 4.662 17 0.22
Note:
Ratings are shown for elevations up to 2,000 feet above sea level. Above 2,000 feet input must be derated four percent for each 1,000 feet above sea level.