Commercial Gas
INTEGRATED HOM E C O M F O RT
Water
Induced Draft Water Heaters
Universal™ Induced Draft commercial gas water heaters
are designed for easy installation in applications
requiring large quantities of hot water
Features & Benefits
The tighter the commercial retrofit,
the more you will appreciate how the
Universal’s compact size and multiple
water connections simplify installations.
Choose from 80% thermal efficiency
models that range from 250,000360,000 Btu/h and have maximum
temperature setting of 180 degrees
Fahrenheit.
Space Saver Design
Factory Installed
Draft ­Inducer
Provides an induced draft allowing
higher Btu's to be vented through a
6" vent.
Full-port, Full-flow Drain Valve
Factory installed brass drain valve
allows for faster draining and servicing.
Direct Spark-to-Pilot
Ignition System
The short height and narrow jacket
diameter, plus the top, front and rear
water inlets/outlets offer the ­ultimate in
installation flexibility.
Energy saving ignition that ignites pilot
only when there is a call for heat.
System
­Sentinel™ LED
Diagnostic
­System
Up to 5,200 feet for natural gas and
2,000 feet for LP.
Our exclusive
­diagnostic ­system,
with glowing LED
lights, verifies system
­operation s­ equence by sequence.
Altitude Certifications
Patented Anode Rods
Anode design utilizes multiple
­magnesium rods to ensure corrosion
resistance for a long tank life.
Warranty
3-Year limited tank warranty
Patented Technology
See Commercial Warranty Certificate for ­
complete information.
Universal’s proprietary steel formulation,
patented multi-flue design, combined
with two coats of porcelain enamel,
results in a superior heat exchanger
design.
Efficiency | All models tested according to ANSI test
procedures, and meet or exceed the thermal efficiency
and standby loss requirements of ASHRAE standard
(EPact). Also exceeds energy efficiency codes of all
states including California Energy Commission (CEC).
Stainless Steel Burners
Precision burners, raised port design,
are formed from high chromium stainless steel. Each burner assembly slides
out like a drawer for quick inspection
and maintenance.
Safety and Construction | Design certified by CSA:
For operation at 180 degrees; meets all safety and
construction requirement of ANSI Z21.10.3; as an
automatic storage or instantaneous water heater; as
an automatic circulating tank water heater; and for
operation on combustible floors and in alcove installations. Certified for 150 PSI maximum working
pressure (160 PSI for ASME models).
Rheem Induced Draft
100-Gallon Capacity
250,000-360,000 Btu/h
Natural and LP Gas
(On Selected
Models)
Optional Construction | ASME construction is
available on designated models. UL Sanitation (NSF5)
compliant models are available when equipped with
optional seal kit (Part No. AM35450).
(With
Optional
Leg Kit)
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PRINTED IN U.S.A. 03/15 WP FORM NO. RR102C-9 Rev. 4
Commercial Gas
INTEGRATED HOME C O M F O RT
Water
Induced Draft Water Heaters
RECOVERY CAPACITIES Recovery in U.S. Gallons/Hr. (GPH) and Liters/Hr. (LPH) at Various Temperature Rises.
MODEL
NUMBER
INPUT BTU/H
NATURAL & L.P.
THERMAL
EFFICIENCY
GD100-250(A)
250,000
80%
GD100-270(A)
270,000
80%
GD100-310(A)
310,000
80%
GD100-360(A)
360,000
80%
40°F
22°C
606
2294
655
2478
752
2845
873
3304
UNITS
GPH
LPH
GPH
LPH
GPH
LPH
GPH
LPH
50°F
28°C
485
1835
524
1982
601
2276
698
2643
60°F
33°C
404
1529
436
1652
501
1896
582
2202
70°F
39°C
346
1311
374
1416
429
1626
499
1888
80°F
45°C
303
1147
327
1239
376
1422
436
1652
90°F
50°C
269
1020
291
1101
334
1264
388
1468
100°F
56°C
242
918
262
991
301
1138
349
1321
110°F
61°C
220
834
238
901
273
1034
317
1201
120°F
67°C
202
765
218
826
251
948
291
1101
130°F
72°C
186
706
201
762
231
875
269
1016
140°F
78°C
173
655
187
708
215
813
249
944
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.
MAXIMUM DELIVERY In U.S. Gallons and Liters. (Includes useable storage and recovery for indicated times.)
MODEL
NUMBER
TANK CAPACITY
GALS.
LITERS
INPUT BTU/H
NAT. & L.P.
GD100-250(A)
100
379
250,000
GD100-270(A)
100
379
270,000
GD100-310(A)
100
379
310,000
GD100-360(A)
100
246
360,000
TEMP.
RISE
100°F
37.7°C
100°F
37.7°C
100°F
37.7°C
100°F
37.7°C
5
Min.
90
341
92
348
95
360
99
375
UNITS
GAL.
LTR.
GAL.
LTR.
GAL.
LTR.
GAL.
LTR.
10
Min.
110
418
114
430
120
455
128
485
15
Min.
131
494
135
513
145
549
157
596
20
Min.
151
571
157
595
170
644
186
706
30
Min.
191
724
201
761
220
834
245
927
45
Min.
252
953
266
1008
295
1118
332
1258
60
Min.
312
1183
332
1256
371
1403
419
1588
120
Min.
555
2100
594
2247
671
2541
768
2911
180
Min.
797
3018
855
3238
972
3679
1117
4234
MIN. TO REC.
CONTENTS
25
23
20
17
DIMENSIONAL INFORMATION All Dimensions Shown in English and Metric.
MODEL
NUMBER
GD100-250(A)
GD100-270(A)
GD100-310(A)
GD100-360(A)
UNITS
inches
mm
inches
mm
inches
mm
inches
mm
A
73-1/2
1867
73-1/2
1867
73-1/2
1867
73-1/2
1867
B
66-3/4
1696
66-3/4
1696
66-3/4
1696
66-3/4
1696
C
30-1/4
768
30-1/4
768
30-1/4
768
30-1/4
768
D
23-1/4
591
23-1/4
591
23-1/4
591
23-1/4
591
E
F
6
152
6
152
6
152
6
152
57-1/2
1460
57-1/2
1460
57-1/2
1460
57-1/2
1460
G
3/4
19
3/4
19
3/4
19
3/4
19
All models require a 120V /3 amp power source. (A) suffix indicates ASME tank construction available.
H
E
OUTLET
TOP
Recommended Specifications
(for trade reference only)
H
23
584
23
584
23
584
23
584
WATER CONNECTIONS
TOP
FRONT
REAR
IN/OUT
SIDE
SIDE
1-1/2
2
2
38
51
51
1-1/2
2
2
38
51
51
1-1/2
2
2
38
51
51
1-1/2
2
2
38
51
51
CLEARANCES TO COMBUSTIBLES
INLET
TOP
MODEL
NUMBER
OUTLET
REAR SIDE
OUTLET
FRONT SIDE
Water heater(s) shall be Induced Draft model
________________, manufactured by Rheem, h
­ aving
gas input of __________ Btu/h and a recovery rate of
SYSTEM
SENTINEL
_____________ GPH at a 100°F temperature rise when
tested and certified at ____________ thermal efficiency.
G
Water heater(s) shall have a storage capacity of
7"
_________ gallons. Water heater(s) shall have the CSA
seal of certification and supplied with a factory installed
CSA/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 furnished 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 w
­ orking 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/h 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.
GD100-250(A)
T&P
C
GD100-270(A)
INLET
FRONT SIDE
INLET
REAR SIDE
(178mm)
F B A
D
APPROXIMATE
SHIPPING WEIGHT
STD.
ASME
795 lbs.
835 lbs.
360 kgs.
378 kgs.
795 lbs.
835 lbs.
360 kgs.
378 kgs.
795 lbs.
835 lbs.
360 kgs.
378 kgs.
795 lbs.
835 lbs.
360 kgs.
378 kgs.
GD100-310(A)
GD100-360(A)
UNITS
inches
mm
inches
mm
inches
mm
inches
mm
SIDE
1
25
1
25
1
25
1
25
REAR
1
25
1
25
1
25
1
25
TOP
12
305
12
305
12
305
12
305
Allow a minimum of 18" (457mm) front clearance for servicing.
When ordering ASME construction, place (A) after the
model number (for trade reference only)
Water heater(s) shall be constructed in accordance with the
­requirements of the ASME Boiler and Pressure Vessel Code,
Section IV Part HLW.
In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.
Rheem Water Heating • 101 Bell Road
Montgomery, Alabama 36117-4305 • www.rheem.com
Rheem Canada Ltd./Ltée • 125 Edgeware Road, Unit 1
Brampton, Ontario L6Y 0P5 • www.rheem.com
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PRINTED IN U.S.A. 03/15 WP FORM NO. RR102C-9 Rev. 4