Appendix – Reznor UDBS Unit Installation Manual User Manual
Page 42
Form I-UDB, P/N 202658 R14, Page 42
APPENDIX
TECHNICAL DATA - Sizes 30 - 125 (Data applies to both Models UDBP and UDBS unless noted otherwise.)
Size
30
45
60
75
100
125
Input Heating Capacity
BTUH
30,000 45,000 60,000 75,000 105,000 120,000
kw/h
8.8
13.2
17.6
22.0
30.8
35.2
Thermal Efficiency (%)
82
82
82
82
83
83
Output Heating Capacity
A
BTUH
24,600 36,900 49,200 61,500 87,150
99,600
kw/h
7.2
10.8
14.4
18.0
25.6
29.2
Gas Connection (inches)
B
Natural
1/2
1/2
1/2
1/2
1/2
1/2
Propane
1/2
1/2
1/2
1/2
1/2
1/2
Vent Connection Size
C
(inches diameter)
4
4
4
4
4
4
Control Amps (24 volt)
1.0
1.0
1.0
1.0
1.0
1.0
Full Load Amps (with standard HP 115V motor)
3.7
3.7
7.1
7.1
13.0
13.0
Maximum Over Current Protection (115V)
D
15
15
15
15
30
30
Normal Power Consumption (watts @ full load, medium speed)
215
215
447
447
537
537
Minimum Discharge Air
Temperature Rise
See Paragraph 2.2
for sound data based
on blower speed.
°F
45
45
45
45
45
45
°C
25
25
25
25
25
25
Maximum Discharge Air
Temperature Rise
°F
75
75
75
75
75
75
°C
41.7
41.7
41.7
41.7
41.7
41.7
Maximum Air Volume
CFM
506
759
1012
1265
1793
2049
M
3
/minute
14.3
21.5
28.7
35.8
50.8
58.0
Minimum Air Volume
CFM
304
456
607
759
1076
1230
M
3
/minute
8.6
12.9
17.2
21.5
30.5
34.8
Discharge Air Opening Area
FT
2
0.1
0.1
1.3
1.3
2.0
2.0
M
2
0.1
0.1
0.1
0.1
0.2
0.2
Maximum Output Velocity
FPM
527
791
810
1012
892
1020
M/minute
159
239
239
299
267
305
Minimum Output Velocity
FPM
316
475
486
607
535
612
M/minute
96
143
143
179
160
183
Standard Blower Motor HP
1/6
1/6
1/3
1/3
3/4
3/4
Blower Size
inches
9 X 6
9 X 6
9 X 6
9 X 6
10 X 10 10 X 10
TECHNICAL DATA - Sizes 150 - 400 (Data applies to both Models UDBP and UDBS unless noted otherwise.)
Size
150
175
200
225
250
300
350
400
Input Heating Capacity
BTUH
150,000
175,000
200,000
225,000
250,000
300,000
350,000
400,000
kw/h
43.9
51.2
58.6
65.9
73.2
87.8
102.5
117.1
Thermal Efficiency (%)
83
83
83
83
83
83
83
82
Output Heating Capacity
A
BTUH
124,500
145,250
166,000
186,750
207,500
249,000
290,500
328,000
kw/h
36.4
42.5
48.6
54.7
60.8
72.9
85.1
96.0
Gas Connection (inches)
B
Natural
1/2
1/2
1/2
3/4
3/4
3/4
3/4
3/4
Propane
1/2
1/2
1/2
3/4
3/4
3/4
3/4
3/4
Vent Connection Size
C
(inches diameter)
5
5
5
5
5
6
6
6
Control Amps (24 volt)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Full Load Amps (w/std HP 115V motor)
5.9
9.6
10.5
12.7
12.7
17.7
27.3
27.3
Maximum Over Current Protection (115V)
D
15
20
25
30
30
40
60
60
Normal Power Consumption (watts)
230
415
485
675
675
1260
1635
1635
Minimum Discharge Air
Temperature Rise
See Paragraph
2.2 for sound
data based on
temperature
rise.
°F
45
45
45
45
45
45
45
50
°C
25
25
25
25
25
25
25
27.8
Maximum Discharge Air
Temperature Rise
°F
75
75
75
75
75
75
75
80
°C
41.7
41.7
41.7
41.7
41.7
41.7
41.7
44.4
Maximum Air Volume
CFM
2562
2989
3416
3843
4270
5123
5977
6185
M
3
/minute
72.5
84.6
96.7
108.8
120.9
145.1
169.2
175.1
Minimum Air Volume
CFM
1537
1793
2049
2306
2562
3074
3586
4100
M
3
/minute
43.5
50.8
58.0
65.3
72.5
87.0
101.5
116.1
Discharge Air Opening Area
Ft
2
2.6
2.6
2.6
3.5
3.5
4.8
4.8
4.8
M
2
0.2
0.2
0.2
0.3
0.3
0.5
0.5
0.5
Maximum Output Velocity
FPM
1001
1168
1334
1095
1217
1070
1248
1291
M/minute
305
356
407
334
371
326
380
393
Minimum Output Velocity
FPM
600
700
800
657
730
642
749
856
M/minute
183
213
244
200
223
196
228
261
Standard Open 115V Blower Motor HP
1/4
1/2
1/2
3/4
3/4
1-1/2
2
2
Blower Size
inches
12 x 12
12 x 12
12 x 12
15 x 11
15 x 11
15 x 15
15 x 15
15 x 15
A
CSA ratings for altitudes to 2000 ft.
B
Size shown is for gas connection to a single-stage gas valve, not supply line size.
C
Smaller and/or larger vent pipe diameters may be permissible; refer to the Venting Installation Manual for Power Vented Units.
D
MOPD = 2.25 x (largest motor (FLA) + smallest motor FLA. Answer is rounded to the nearest commercially available circuit breaker.