UHD L
OW
P
ROFILE
D
UCT
F
URNACE
I
NSTALLATION
O
PERATION AND
S
ERVICE
M
ANUAL
44 of 45
16.2 General Technical Data Table
*Do not exceed the maximum length of flue stated or heater may not operate properly.
16.3 Technical Data Table
Model
UHD[X][S] 75
UHD[X][S] 100
UHD[X][S] 125
Full Load Amps @ 120 V
A
1
2
2
Minimum Air Volume
CFM
850
950
1020
Temperature Rise @ Minimum Air Volume
°F (°C)
68 (37)
78 (43)
92 (51)
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 (12)
22 (12)
20 (11)
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
Duct Size (Width)
in (cm)
16 3/4 (43)
21 3/4 (55)
21 3/4 (55)
Duct Size (Height)
in (cm)
15 7/8 (40)
15 7/8 (40)
15 7/8 (40)
Weight
lb (kg)
81 (36.7)
92 (41.7)
97 (44)
Recomended Mounting Height to Heater Base
ft (m)
12 (3.66)
20 (6.10)
20 (6.10)
Model
UHD[X][S] 75
UHD[X][S] 100
UHD[X][S] 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 Data - Inlet Pressure 5.0 in wc Min., 14 in wc Max.
Burner Pressure
in wc
3.2
2.7
3.0
LPG / Propane Data - Inlet Pressure 12.0 in wc Min., 14 in wc Max.
Burner Pressure
in wc
10.1
8.9
9.15
