Service manual

SECTION 16: SPECIFICATIONS
53 of 55
16.5 General Technical Data Table
* Do not exceed the maximum length of flue stated or heater may not operate properly.
16.6 Technical Data Table
Model UHD[T][M][X][S][R] 300 UHD[T][M][X][S][R] 350 UHD[T][M][X][S][R] 400
Full Load Amps @ 120 V A 2 6 6
Minimum Air Volume CFM 2700 3120 3420
Temperature Rise @
Minimum Air Volume
°F
(°C)
86
(47)
86
(47)
86
(47)
Heat Exchanger Pressure
Drop @ Minimum Air Volume in wc 0.02 0.03 0.04
Maximum Air Volume CFM 10200 13600 14200
Temperature Rise @
Maximum Air Volume
°F
(°C)
23
(13)
22
(12)
22
(12)
Heat Exchanger Pressure
Drop @Maximum Air Volume in wc 0.27 0.48 0.53
Flue Size*
in
(cm)
4 - All Models
(10)
Air Intake*
in
(cm)
5
(13)
5
(13)
5
(13)
Duct Size (Width)
28
(71)
35
(89)
35
(89)
35
(89)
Duct Size (Height)
24
(61)
40.5
(103)
40.5
(103)
40.5
(103)
Weight (Net)
lb
(kg)
325
(147.4)
345
(156.5)
345
(156.5)
Model UHD[T][M][X][S][R] 300 UHD[T][M][X][S][R] 350 UHD[T][M][X][S][R] 400
Total Input High Fire (Btu/h) x (1000) 300 350 385
Total Input Low Fire (Btu/h) x (1000) 210 245 269.5
Total Output High Fire (Btu/h) x (1000) 246 287 315.7
Total Output Low Fire (Btu/h) x (1000) 172.2 200.9 221
Efficiency % 82 82 82
Natural Gas Data - Inlet Pressure 5.0 in wc Min., 14 in wc Max.
Burner Pressure High Fire in wc 3.9 4.0 3.3
Burner Pressure Low Fire in wc 1.8 1.8 1.4
LPG / Propane Data - Inlet Pressure 12.0 in wc Min., 14 in wc Max.
Burner Pressure High Fire in wc 10.0 8.7 10.7
Burner Pressure Low Fire in wc 4.9 4.2 5.1