Service manual

Model UHA[T][M][X][S]300 UHA[T][M][X][S]350 UHA[T][M][X][S]400
A in (cm) 52.3 (132.8) 52.3 (132.8) 52.3 (132.8)
B in (cm) 43.2 (109.7) 43.2 (109.7) 43.2 (109.7)
C in (cm) 25.5 (64.8) 25.5 (64.8) 25.5 (64.8)
D in (cm) 24.7 (62.7) 24.7 (62.7) 24.7 (62.7)
E in (cm) 19.4 (49.3) 19.4 (49.3) 19.4 (49.3)
F in (cm) 30.0 (76.2) 30.0 (76.2) 30.0 (76.2)
G in (cm) 7.0 (17.8) 7.0 (17.8) 7.0 (17.8)
H in (cm) 11.2 (28.4) 11.2 (28.4) 11.2 (28.4)
J in (cm) 13.8 (35.1) 13.8 (35.1) 13.8 (35.1)
K in (cm) 4.3 (6.8) 4.3 (6.8) 4.3 (6.8)
L in (cm) 8.7 (22.1) 8.7 (22.1) 8.7 (22.1)
M in (cm) 12.1 (30.7) 12.1 (30.7) 12.1 (30.7)
N in (cm) 6.5 (16.5) 6.5 (16.5) 6.5 (16.5)
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL
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16.5 General Technical Data Table
Model UHA[T][M][X][S]300 UHA[T][M][X][S]350 UHA[T][M][X][S]400
Full Load Amps @ 120 V A 11.6 11.6 11.6
Air Volume CFM 4663 4663
4663
Flue and Air Intake
Flue Intake Size in (cm) 4 (10) 4 (10) 4 (10)
Air Intake Size in (cm) 5 (13) 5 (13) 5 (13)
*Maximum Straight
Flue/Air Intake ft (m) 40 (1) 40 (1) 40 (1)
Weight (Net)
lbs
(k
g) 355 (161.0) 375 (170.1) 375 (170.1)
*Do not exceed the maximum length of flue stated or heater may not operate properly.
16.6 Technical Data Table
Model UHA[T][M][X][S]300 UHA[T][M][X][S]350 UHA[T][M][X][S]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