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UHD STANDARD DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL
38
15.2 General Technical Data Table
* Do not exceed the maximum length of flue stated or heater may not operate properly.
15.3 Technical Data Table
Model
UHD
[X][S][R]
150
UHD
[X][S][R]
175
UHD
[X][S][R]
200
UHD
[X][S][R]
225
UHD
[X][S][R]
250
UHD
[X][S][R]
300
UHD
[X][S][R]
350
UHD
[X][S][R]
400
Full Load Amps @ 115 V A 2 2 2 2 2 2 6 6
Minimum Air Volume CFM 1360 1400 2050 2100 2350 2700 3120 3420
Temperature Rise @
Minimum Air Volume
°F
(°C)
83
(28)
95
(35)
73
(23)
80
(27)
80
(27)
86
(30)
86
(30)
86
(30)
Heat Exchanger Pressure
Drop @ Minimum Air Volume in wc 0.02 0.03 0.025 0.035 0.05 0.02 0.03 0.04
Maximum Air Volume CFM 5800 6850 7750 8300 8850 10200 13600 14200
Temperature Rise @
Maximum Air Volume
°F
(°C)
20
(7)
20
(7)
20
(7)
20
(7)
22
(6)
23
(5)
22
(6)
22
(6)
Heat Exchanger Pressure
Drop @Maximum Air Volume in wc 0.16 0.29 0.163 0.253 0.35 0.27 0.48 0.53
Flue Size*
in
(cm)
4 - All Models
(10)
Air Intake*
in
(cm)
4
(10)
4
(10)
4
(10)
4
(10)
4
(10)
5
(13)
5
(13)
5
(13)
Model
UHD
[X][S][R]
150
UHD
[X][S][R]
175
UHD
[X][S][R]
200
UHD
[X][S][R]
225
UHD
[X][S][R]
250
UHD
[X][S][R]
300
UHD
[X][S][R]]
350
UHD
[X][S][R]
400
Total Input (Btu/h) x (1000) 150 175 200 225 250 300 350 385
Total Output (Btu/h) x (1000) 123 143.5 164 184.5 205 246 287 315.7
Efficiency % 82 - All Models
Natural Gas (G20) Data - Inlet Pressure 5.0 in wc Min., 14 in wc Max.
Burner Pressure in wc 3.2 3.4 3.7 3.7 4.0 2.7 2.7 3.3
LPG / Propane (G31) Data - Inlet Pressure 12.0 in wc Min., 14 in wc Max.
Burner Pressure in wc 9.9 10.4 10.5 10.7 10.5 9.4 9.3 11.1