Print Back
Universal™ is a family of commercial gas water heaters that are designed to fit into tight retrofit applications.
Universal™ Commercial Gas Water Heaters
Unit of Measure
Items Universal™ Commercial Gas Water Heaters
G50-98
Universal™ Commercial Gas Water Heaters
Universal™ Commercial Gas Water Heaters
G75-125
Universal™ Commercial Gas Water Heaters
Universal™ Commercial Gas Water Heaters
G82-156
Universal™ Commercial Gas Water Heaters
Universal™ Commercial Gas Water Heaters
G76-180
Universal™ Commercial Gas Water Heaters
Universal™ Commercial Gas Water Heaters
G37-200
Universal™ Commercial Gas Water Heaters
Manufacturer N/A Rheem®
Capacity N/A 35 to 100 gal
Thermal Efficiency N/A 80 %
Input Power N/A 98000 BTU/hr N/A 125000 BTU/hr N/A 156000 BTU/hr N/A 180000 BTU/hr N/A 199900 BTU/hr
Recovery at 40 ºF Temperature Rise N/A 238 U.S. gal/h N/A 303 U.S. gal/h N/A 378 U.S. gal/h N/A 436 U.S. gal/h N/A 485 U.S. gal/h
Recovery at 22 ºC Temperature Rise N/A 899 L/h N/A 1147 L/h N/A 1432 L/h N/A 1652 L/h N/A 1834 L/h
Recovery at 50 ºF Temperature Rise N/A 190 U.S. gal/h N/A 242 U.S. gal/h N/A 303 U.S. gal/h N/A 349 U.S. gal/h N/A 388 U.S. gal/h
Recovery at 28 ºC Temperature Rise N/A 719 L/h N/A 918 L/h N/A 1145 L/h N/A 1321 L/h N/A 1468 L/h
Recovery at 60 ºF Temperature Rise N/A 158 U.S. gal/h N/A 202 U.S. gal/h N/A 252 U.S. gal/h N/A 291 U.S. gal/h N/A 323 U.S. gal/h
Recovery at 33 ºC Temperature Rise N/A 600 L/h N/A 765 L/h N/A 954 L/h N/A 1101 L/h N/A 1223 L/h
Recovery at 70 ºF Temperature Rise N/A 136 U.S. gal/h N/A 173 U.S. gal/h N/A 216 U.S. gal/h N/A 249 U.S. gal/h N/A 277 U.S. gal/h
Recovery at 39 ºC Temperature Rise N/A 514 L/h N/A 655 L/h N/A 818 L/h N/A 944 L/h N/A 1048 L/h
Recovery at 80 ºF Temperature Rise N/A 119 U.S. gal/h N/A 152 U.S. gal/h N/A 189 U.S. gal/h N/A 218 U.S. gal/h N/A 242 U.S. gal/h
Recovery at 45 ºC Temperature Rise N/A 450 L/h N/A 574 L/h N/A 716 L/h N/A 826 L/h N/A 917 L/h
Recovery at 90 ºF Temperature Rise N/A 106 U.S. gal/h N/A 135 U.S. gal/h N/A 168 U.S. gal/h N/A 194 U.S. gal/h N/A 215 U.S. gal/h
Recovery at 50 ºC Temperature Rise N/A 400 L/h N/A 510 L/h N/A 636 L/h N/A 734 L/h N/A 815 L/h
Recovery at 100 ºF Temperature Rise N/A 95 U.S. gal/h N/A 121 U.S. gal/h N/A 151 U.S. gal/h N/A 175 U.S. gal/h N/A 194 U.S. gal/h
Recovery at 56 ºC Temperature Rise N/A 360 L/h N/A 459 L/h N/A 573 L/h N/A 661 L/h N/A 734 L/h
Recovery at 110 ºF Temperature Rise N/A 86 U.S. gal/h N/A 110 U.S. gal/h N/A 138 U.S. gal/h N/A 159 U.S. gal/h N/A 176 U.S. gal/h
Recovery at 61 ºC Temperature Rise N/A 327 L/h N/A 417 L/h N/A 521 L/h N/A 601 L/h N/A 667 L/h
Recovery at 120 ºF Temperature Rise N/A 79 U.S. gal/h N/A 101 U.S. gal/h N/A 126 U.S. gal/h N/A 145 U.S. gal/h N/A 162 U.S. gal/h
Recovery at 67 ºC Temperature Rise N/A 300 L/h N/A 382 L/h N/A 477 L/h N/A 551 L/h N/A 611 L/h
Recovery at 130 ºF Temperature Rise N/A 73 U.S. gal/h N/A 93 U.S. gal/h N/A 116 U.S. gal/h N/A 134 U.S. gal/h N/A 149 U.S. gal/h
Recovery at 72 ºC Temperature Rise N/A 277 L/h N/A 353 L/h N/A 440 L/h N/A 508 L/h N/A 564 L/h
Recovery at 140 ºF Temperature Rise N/A 68 U.S. gal/h N/A 87 U.S. gal/h N/A 108 U.S. gal/h N/A 125 U.S. gal/h N/A 138 U.S. gal/h
Recovery at 78 ºC Temperature Rise N/A 257 L/h N/A 328 L/h N/A 409 L/h N/A 472 L/h N/A 524 L/h
Tank Capacity N/A 50 gal189 L N/A 75 gal284 L N/A 82 gal310 L N/A 76 gal288 L N/A 35 gal132 L
Temperature Rise N/A 100 ºF56 ºC
Maximum Delivery (5 Minutes) N/A 43 U.S. gal162 L N/A 63 U.S. gal237 L N/A 70 U.S. gal265 L N/A 68 U.S. gal256 L N/A 41 U.S. gal155 L
Maximum Delivery (10 Minutes) N/A 51 U.S. gal192 L N/A 73 U.S. gal275 L N/A 83 U.S. gal313 L N/A 82 U.S. gal311 L N/A 56 U.S. gal212 L
Maximum Delivery (15 Minutes) N/A 59 U.S. gal222 L N/A 83 U.S. gal313 L N/A 95 U.S. gal360 L N/A 97 U.S. gal367 L N/A 72 U.S. gal273 L
Maximum Delivery (20 Minutes) N/A 67 U.S. gal252 L N/A 93 U.S. gal352 L N/A 108 U.S. gal408 L N/A 111 U.S. gal422 L N/A 88 U.S. gal333 L
Maximum Delivery (30 Minutes) N/A 83 U.S. gal312 L N/A 113 U.S. gal428 L N/A 133 U.S. gal504 L N/A 140 U.S. gal532 L N/A 119 U.S. gal451 L
Maximum Delivery (45 Minutes) N/A 106 U.S. gal402 L N/A 143 U.S. gal543 L N/A 171 U.S. gal647 L N/A 184 U.S. gal697 L N/A 167 U.S. gal633 L
Maximum Delivery (60 Minutes) N/A 130 U.S. gal492 L N/A 174 U.S. gal658 L N/A 209 U.S. gal790 L N/A 228 U.S. gal862 L N/A 214 U.S. gal811 L
Maximum Delivery (120 Minutes) N/A 225 U.S. gal852 L N/A 295 U.S. gal1116 L N/A 360 U.S. gal1363 L N/A 402 U.S. gal1523 L N/A 403 U.S. gal1527 L
Maximum Delivery (180 Minutes) N/A 320 U.S. gal1212 L N/A 416 U.S. gal1575 L N/A 511 U.S. gal1935 L N/A 577 U.S. gal2183 L N/A 562 U.S. gal2130 L
Minimum to Recovery Contents N/A 32 N/A 37 N/A 33 N/A 26 N/A 11
Schematic N/A
Schematic Drawing for Universal™ Commercial Gas Water Heaters
Dimension A N/A 62-3/4 in1594 mm N/A 65-1/2 in1664 mm N/A 68-13/16 in1748 mm N/A 68-13/16 in1748 mm N/A 49-1/4 in1251 mm
Dimension B N/A 57-1/8 in1451 mm N/A 61 in1549 mm N/A 64 in1626 mm N/A 64 in1626 mm N/A 43-3/8 in1102 mm
Dimension C N/A 22-1/2 in667 mm N/A 26-1/4 in667 mm N/A 26-1/4 in667 mm N/A 26-1/4 in667 mm N/A 26-1/4 in667 mm
Dimension D N/A 22-5/8 in575 mm N/A 25 in635 mm N/A 25 in635 mm N/A 25 in635 mm N/A 25 in635 mm
Dimension E N/A 5 in127 mm N/A 5 in127 mm N/A 6 in152 mm N/A 6 in152 mm N/A 6 in152 mm
Dimension F N/A 50-1/2 in1283 mm N/A 56 in1422 mm N/A 58-5/8 in1489 mm N/A 58-5/8 in1489 mm N/A 37-5/8 in956 mm
Dimension G N/A 1/2 in13 mm N/A 3/4 in19 mm N/A 3/4 in19 mm N/A 3/4 in19 mm N/A 3/4 in19 mm
Dimension H N/A 15 in381 mm N/A 20 in508 mm N/A 20 in508 mm N/A 20 in508 mm N/A 20 in508 mm
Top Inlet/Outlet Water Connection N/A 1 in25 mm N/A 1-1/2 in38 mm N/A 1-1/2 in38 mm N/A 1-1/2 in38 mm N/A 1-1/2 in38 mm
Front Side Water Connection N/A 1-1/2 in38 mm
Rear Side Water Connection N/A 1-1/2 in38 mm
Standard Approximate Shipping Weight N/A 270 lb122 kg N/A 480 lb217 kg N/A 490 lb222 kg N/A 540 lb245 kg N/A 405 lb184 kg
ASME Approximate Shipping Weight N/A
Side N/A 2 in51 mm
Rear N/A 2 in51 mm
Top N/A 12 in305 mm
Style N/A Universal™
Size N/A C
Type N/A Liquid Propane Gas Natural Gas
Industry Standards N/A ANSI ASME Certified C.E.C. Listed CSA® Certified
Features and Benefits N/A 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 98,000-399,900 Btu/h and have maximum temperature setting of 180 degrees Fahrenheit.

Space Saver Design
The short heights and narrow jacket diameters, plus the top, front and rear water inlets/outlets offer the ultimate in installation flexibility.

System Sentinel ™ LED Diagnostic System
Our exclusive diagnostic system, with glowing LED lights, verifies system operation sequence by sequence.

Patented Technology
Universal’s proprietary steel formulation, patented multi-flue design, combined with two coats of porcelain enamel, results in a superior heat exchanger design.

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.

Low Profile Automatic Flue Damper
Low profile damper minimizes overall product height. Heavy duty vent hood supports are designed to withstand the rigors of installation.

Full-port, Full-flow Drain Valve
Factory installed brass drain valve allows for faster draining and servicing.

Direct Spark-to-Pilot Ignition System
Energy saving ignition that ignites pilot only when there is a call for heat.

Altitude Certifications
Up to 5,000 feet for natural gas and 2,000 feet for LP; with high altitude certification kit, up to 8,000 feet.

Patented Anode Rods
Anode design utilizes multiple magnesium rods to ensure corrosion resistance for a long tank life.
General Information N/A 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).

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).

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).

CSA/ASME Rated T&P Valve
Factory installed relief valve

Insulation
Sag and moisture proof fiberglass insulation surrounds the storage tank and heavy mineral wool insulation surrounds the combustion chamber.

Hand-hole Cleanout
For easy removal of lime/sediment deposits.

Manual Reset High Limit
ASME models are factory equipped with manual reset high limit to meet the code requirements in many states.

Gas Control System
Thermostat adjusts from 100 to 180 degrees Fahrenheit, 24 volt combination gas valve includes main gas pressure regulation, on-off manual valve, 120/24 volt transformer and high limit temperature cut-out.
Warranty N/A
  • 3-Year limited Tank Warranty. Commercial Warranty Certificate for Complete Information.
Note N/A All Models Require a 120 V Power Source/0.3 amps