Universal Gas
Commercial Water Heaters
Available in Sizes Ranging From 35 - 100 Gallon Tank-Type Models
ꢀ
98,000 BTU/Hr. thru 400,000 BTU/Hr.
Universal Gas Commercial Water Heaters are specifically designed to
minimize the difficulty of replacing failed water heaters and are versatile for
new installations. These products are designed for applications requiring
large quantities of hot water.
Construction Features:
• Low profile automatic flue
damper –
low profile design minimizes over-
all product height. New heavy duty
vent hood supports are designed
to withstand rigors of installation.
• Universal tank design –
maximizes installation adaptability
by offering models with Top, Front
Side and Rear Side Inlet/Outlet
water connections.
• Universal space saver design –
short heights and small jacket
diameters result in greater
installation flexibility.
• Spark-To-Pilot ignition system –
standard on all models. Provides
reliable and energy saving ignition
sequencing by igniting the pilot
only when the thermostat calls for
heat.
• System Sentinel™ LED
diagnostic system –
our exclusive diagnostic system,
with glowing LED lights, verifies
system operation sequence by
sequence.
• Patented multi-flue tank design –
proprietary steel formulation,
patented multi-flue design, and
two coats of high temperature
porcelain enamel to maximize
corrosion resistance result in a
superior heat exchanger design.
Small Jacket
Diameters
Short
Floor-to-Vent
Heights
• Full port, full flow brass drain
valve
Multiple
Water Connection
Options
Certifications and Ratings:
• Efficiency – these models have been tested according to ANSI test
procedures, and meet or exceed the thermal efficiency and standby loss
requirements of current ASHRAE standard (Part of the Federally
mandated Energy Policy Act (EPact)). Also exceeds energy efficiency
codes of all states including California Energy Commission (CEC).
• Safety and construction – these products are design certified by the
CSA: a) For operation at 180°F. b) To meet all safety and construction
requirements of ANSI Z21.10.3. c) As an automatic storage or instanta-
neous water heater. d) As an automatic circulating tank water heater.
e) For operation on combustible floors and in alcove installations.
All models are North Carolina Code compliant.
(On Selected
Models)
(With Optional
Leg Kit)
CERTIFIED FOR A 150 PSI MAXIMUM WORKING PRESSURE
(160 PSI FOR ASME MODELS).
• Optional constructions – ASME construction is available on designated
models. UL Sanitation (NSF5) compliant models are available when
equipped with optional leg kit. (Part No. AE35450)
Continued next page.
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Universal Gas continued.
RECOVERY CAPACITIES Recovery in U.S. Gallons/Hr. (GPH) and Liters/Hr. (LPH) at Various Temperature Rises.
MODEL
NUMBER
G50-98
INPUT BTU/HR.
NATURAL & L.P.
98,000
THERMAL
EFFICIENCY
80%
40°F 50°F 60°F 70°F 80°F 90°F 100°F 110°F 120°F 130°F 140°F
UNITS
GPH
LPH
22°C
238
899
28°C
190
719
33°C
158
600
39°C
136
514
45°C
50°C
56°C
61°C
67°C
72°C
78°C
119 106
450
95
360
86
327
79
300
73
277
93
68
257
87
400
G75-125
125,000
156,000
180,000
199,900
199,900
199,900
199,900
250,000
250,000
270,000
300,000
300,000
310,000
360,000
399,900
399,900
399,900
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
GPH
LPH
303
1147
378
1432
436
1652
485
1834
485
1834
485
1834
485
1834
606
2294
606
2294
655
2478
727
2753
727
2753
752
2845
873
3304
969
3670
969
3670
969
3670
242
918
202
765
173
655
152 135
574
121
459
110 101
417
510
382
353
328
G82-156
GPH
LPH
303
1145
349
1321
388
1468
388
1468
388
1468
388
1468
485
1835
485
1835
524
1982
582
2202
582
2202
601
2276
698
2643
776
2936
776
2936
776
2936
252
954
216
818
189 168
151
573
138 126
116 108
716
636
521
477
440
409
G76-180
GPH
LPH
291
1101
323
1223
323
1223
323
1223
323
1223
404
1529
404
1529
436
1652
485
1835
485
1835
501
1896
582
2202
646
2446
646
2446
646
2446
249
944
218 194
175
661
159 145
134 125
826
734
601
551
508
472
G37-200
GPH
LPH
277
1048
277
1048
277
1048
277
1048
346
1311
346
1311
374
1416
416
1573
416
1573
429
1626
499
1888
554
2097
554
2097
554
2097
242 215
194
734
176 162
149 138
917
815
667
611
564
524
G76-200
GPH
LPH
242 215
194
734
176 162
149 138
917
815
667
611
564
524
G91-200
GPH
LPH
242 215
194
734
176 162
149 138
917
815
667
611
564
524
G100-200(A)
G72-250(A)
G100-250(A)
G100-270(A)
G72-300(A)
G85-300(A)
G100-310(A)
G65-360(A)
G65-400(A)
G85-400(A)
G100-400(A)
GPH
LPH
242 215
194
734
176 162
149 138
917
815
667
611
564
524
GPH
LPH
303 269
242
918
220 202
186 173
1147
1020
834
765
706
655
GPH
LPH
303 269
242
918
220 202
186 173
1147
1020
834
765
706
655
GPH
LPH
327 291
262
991
238 218
201 187
1239
1101
901
826
762
708
GPH
LPH
364 323
291
1101
291
1101
301
1138
349
1321
388
1468
388
1468
388
1468
264 242
224 208
1376
1224
1001
918
847
787
GPH
LPH
364 323
264 242
224 208
1376
1224
1001
918
847
787
GPH
LPH
376 334
273 251
231 215
1422
1264
1034
948
875
813
GPH
LPH
436 388
317 291
269 249
1652
1468
1201
1101
1016
944
GPH
LPH
485 431
353 323
298 277
1835
1631
1334
1223
1129
1048
GPH
LPH
485 431
353 323
298 277
1835
1631
1334
1223
1129
1048
GPH
LPH
485 431
353 323
298 277
1835
1631
1334
1223
1129
1048
Recovery ratings are based on thermal efficiencies obtained in a CSA certified laboratory. Recovery rate shown on the rating
plate (75%) Thermal Efficiency in accordance with ANSI Z21.10.3 labeling requirements. (A) indicates available ASME model.
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Universal Gas continued.
DIMENSIONAL INFORMATION All Dimensions Shown in English and Metric.
WATER CONNECTIONS
APPROXIMATE
SHIPPING WEIGHT
MODEL
TOP
FRONT REAR
NUMBER
UNITS
inches 62-3/4
A B C D E F G H
IN/OUT SIDE
SIDE
1-1/2
38
STD.
ASME
N/A
N/A
G50-98
57-1/8
1451
61
22-1/2 22-5/8
5
127
5
50-1/2 1/2
15
381
20
1
25
1-1/2
38
270 lbs.
122 kgs.
480 lbs.
217 kgs.
490 lbs.
222 kgs.
540 lbs.
245 kgs.
405 lbs.
184 kgs.
540 lbs.
245 kgs.
600 lbs.
272 kgs.
mm
1594
667
26-1/4
667
575
25
635
25
635
25
635
25
635
25
635
1283
13
3/4
19
G75-125
G82-156
G76-180
G37-200
G76-200
G91-200
inches 65-1/2
mm
56
1422
1-1/2
38
1-1/2
38
1-1/2
38
N/A
N/A
1664
1549
127
508
inches 68-13/16
mm
64
1626
64
1626
43-3/8
1102
64
26-1/4
667
6
152
6
58-5/8 3/4
1489
20
508
20
1-1/2
38
1-1/2
38
1-1/2
38
N/A
N/A
1748
19
inches 68-13/16
mm
26-1/4
667
58-5/8 3/4
1489
1-1/2
38
1-1/2
38
1-1/2
38
N/A
N/A
1748
152
19
508
inches 49-1/4
mm
26-1/4
667
6
152
6
37-5/8 3/4
956
20
508
20
1-1/2
38
1-1/2
38
1-1/2
38
N/A
N/A
1251
19
inches 68-13/16
mm
26-1/4
667
58-5/8 3/4
1489
1-1/2
38
1-1/2
38
1-1/2
38
N/A
N/A
1748
1626
152
19
508
inches 76-5/16 71-13/16 26-1/4 30-5/8
mm
6
66-3/8 3/4
20
1-1/2
38
1-1/2
38
1-1/2
38
N/A
N/A
1938
1824
66-1/8
1680
667
778
152
6
1686
19
508
23
G100-200(A) inches 73-1/16
30-1/4 23-1/4
57-1/2 3/4
1460
1-1/2
38
2
2
780 lbs. 835 lbs.
mm
1856
768
26-1/4
667
591
152
19
584
51
51
353 kgs.
378 kgs.
G72-250(A) inches 71-1/16
64-1/2
1638
25
635
6
152
8
58-5/8 3/4
1489
20
508
23
1-1/2
38
1-1/2
38
1-1/2
38
590 lbs. 630 lbs.
mm
1805
19
267 kgs.
285 kgs.
G100-250(A) inches 73-1/4
66-1/8
1680
30-1/4 23-1/4
57-1/2 3/4
1-1/2
38
2
2
795 lbs. 835 lbs.
mm
1861
768
591
203
1460
19
584
51
51
360 kgs.
378 kgs.
G100-270(A) inches 73-7/8
66-1/8
1680
30-1/4 23-1/4
8
203
8
57-1/2 3/4
23
584
20
1-1/2
38
2
51
2
51
805 lbs. 845 lbs.
mm
G72-300(A) inches
mm
1876
768
26-1/4
667
591
1460
19
365 kgs.
383 kgs.
71
1803
64-1/8
1629
25
635
58-5/8 3/4
1-1/2
38
1-1/2
38
1-1/2
38
590 lbs. 630 lbs.
203
1489
19
508
267 kgs.
285 kgs.
G85-300(A) inches 78-7/16 72-5/16
26-1/4 30-5/8
8
203
7
66-3/8 3/4
20
508
23
584
N/A
N/A
N/A
N/A
20
1-1/2
38
1-1/2
38
1-1/2
38
640 lbs. 680 lbs.
mm
G100-310(A) inches
mm
1992
1837
68-1/2
1740
667
778
1686
19
290 kgs.
308 kgs.
75
1905
30-1/4 32-1/4
61-3/4 3/4
1-1/2
38
2
51
2
51
770 lbs. 810 lbs.
768
26-1/4
667
819
25
635
25
635
178
1568
19
349 kgs.
367 kgs.
G65-360(A) inches 70-11/16 64-1/2
8
203
8
203
10
254
8
58-5/8 3/4
N/A
N/A
1-1/2
38
1-1/2
38
640 lbs. 680 lbs.
mm
1795
1638
1489
19
290 kgs.
308 kgs.
G65-400(A) inches 70-11/16 64-1/2
26-1/4
667
58-5/8 3/4
N/A
N/A
1-1/2
38
1-1/2
38
640 lbs. 680 lbs.
mm
1795
1638
1489
19
290 kgs.
308 kgs.
G85-400(A) inches 78-13/16 72-5/16
26-1/4 30-5/8
66-3/8 3/4
1-1/2
38
1-1/2
38
1-1/2
38
640 lbs. 680 lbs.
mm
G100-400(A) inches
mm
2002
1837
68-1/2
1740
667
778
1686
61-3/4
1568
19
508
290 kgs.
308 kgs.
76
1930
30-1/4 32-1/4
1*
25*
23
584
1-1/2
38
2
51
2
51
770 lbs. 810 lbs.
768
819
203
349 kgs.
367 kgs.
*3/4" (19mm) for L.P. Models. Increase Height 3-5/8" (92mm) for NSF Models.
All Models Require a 120V Power Source/0.3 amps. (A) Suffix Indicates ASME Tank Construction Available.
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Universal Gas continued.
CLEARANCES TO COMBUSTIBLES
DIMENSIONAL DIAGRAM
MODEL
NUMBER
UNITS
SIDE
REAR
TOP
H
E
G50-98
inches
mm
2
51
2
2
51
2
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
12
305
OUTLET
INLET
TOP
TOP
G75-125
G82-156
G76-180
G37-200
G76-200
G91-200
inches
mm
51
51
inches
mm
2
51
2
2
51
2
inches
mm
51
51
inches
mm
2
51
2
2
51
2
OUTLET
REAR SIDE
T&P
OUTLET
FRONT SIDE
inches
mm
51
51
C
inches
mm
2
51
2
2
51
4
G100-200(A) inches
INLET
FRONT SIDE
mm
51
102
G72-250(A)
inches
mm
6
152
2
6
152
4
F B A
G100-250(A) inches
SYSTEM
SENTINEL
mm
G100-270(A) inches
mm
51
102
2
51
6
4
102
6
G72-300(A)
inches
mm
INLET
REAR SIDE
G
152
152
G85-300(A)
inches
mm
6
152
6
6
152
6
D
G100-310(A) inches
7"
mm
152
152
(178mm)
G65-360(A)
G65-400(A)
G85-400(A)
inches
mm
6
152
6
6
152
6
inches
mm
152
152
inches
mm
6
152
6
6
152
6
G100-400(A) inches
mm
152
152
Allow a minimum of 18" (457mm)
front clearance for servicing.
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Universal Gas continued.
Other Features:
• Insulation – sag and moisture proof fiberglass
insulation surrounds the storage tank to mini-
mize heat loss. In addition, heavy mineral wool
insulation surrounds the combustion chamber.
• Gas control system – Fully adjustable
thermostat from 100°F to 180°F, 24 volt
combination gas valve includes main gas
pressure regulation, On-Off manual valve,
120/24 volt transformer, and high limit
temperature cut-out.
• Anode rods – patented design utilizes multiple
magnesium rods to ensure long life and corro-
sion resistance.
• Stainless steel burners – Precision burners
of raised port design are formed from high
chromium stainless steel. Entire burner
assembly is built like a drawer which slides
out easily for quick inspection and simple
maintenance.
• Temperature and pressure relief valve –
AGA/ASME rated and factory installed.
• Hand-hole cleanout – for removal of lime/sedi-
ment deposits.
• Manual reset high limit – all ASME models are
factory equipped with a manual reset high limit
to meet the code requirements of many states.
• LED dIagnostics – On damper assembly for
easier service.
Recommended Specifications (for trade reference only)
Water heater(s) shall be UNIVERSAL model ________________, manufactured by RHEEM-RUUD,
having gas input of __________ Btu/hr. and a recovery rate of _____________ GPH at a 100°F tem-
perature rise when tested and certified at ____________ thermal efficiency. Water heater(s) shall have
a storage capacity of _________ gallons. Water heater(s) shall have the CSA seal of certification and
supplied with a factory installed AGA/ASME rated temperature and pressure relief valve. Tank(s) shall
be furnished with a tube bundle having a double coating of high temperature porcelain enamel and fur-
nished with magnesium anode rods rigidly supported. Water heater(s) shall meet or exceed the thermal
efficiency and standby loss requirements of ASHRAE. Tanks shall have a working pressure rating of
150 psi, and shall be completely factory assembled, including a pressure regulator properly adjusted for
operation on ___________ gas with stainless steel burners. Controls will be arranged for safety shutoff
in event of pilot failure. Water heater(s) with inputs less than 360,000 Btu/hr. shall have top, front and
rear side inlet/outlet water connections. Water heater(s) shall be covered by a three year limited
warranty against tank leaks.
• Add for ASME construction –
Water heater(s) shall be constructed in accordance with the requirements of the ASME Boiler and
Pressure Vessel Code, Section IV Part HLW.
Limited Warranty
This product features a three year limited warranty against tank leaks. Please refer to Commercial
Warranty Information brochure for complete warranty information.
C O M M E R C I A L
W A T E R H E A T E R S
In keeping with its policy of continuous progress and product improvement, Rheem-Ruud reserves the right to make changes without notice.
Rheem Canada Ltd./Ltée,128 Barton Street West, Hamilton, Ontario L8N 3P3
PRINTED IN U.S.A
05/06 WP
FORM NO. RR102C-1 Rev.16
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