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SECTION 15: SPECIFICATIONS
41
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]
75
UHD[X][S][R]
100
UHD[X][S][R]
125
Full Load Amps @ 115 V A 1 2 2
Minimum Air Volume CFM 850 950 1020
Temperature Rise @ Minimum Air Volume °F (
°C)
68 (20) 78 (26) 92 (33)
Heat Exchanger Pressure Drop @ Minimum Air Volume in wc 0.06 0.05 0.06
Maximum Air Volume CFM 2650 3660 4750
Temperature Rise @ Maximum Air Volume °F (
°C)
22 (-6) 22 (-6) 20 (-7)
Heat Exchanger Pressure Drop @ Maximum Air Volume in wc 0.36 0.55 0.98
Flue Size/Air Intake** in (cm) 4 (10)-All models
Model
UHD[X][S][R]
75
UHD[X][S][R]
100
UHD[X][S][R] 125
Total Input (Btu/h) x (1000) 75 100 125
Total Output (Btu/h) x (1000) 61.5 82 102.5
Efficiency % 82-All models
Natural Gas (G20) Data - Inlet Pressure 5.0 in wc Min., 14 in wc Max.
Burner Pressure in. wc 3.5 2.6 3.3
LPG / Propane (G31) Data - Inlet Pressure 12.0 in wc Min., 14 in wc Max.
Burner Pressure in. wc 10.0 9.1 10.0