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Universal™ ultra low NOx is a family of commercial gas water heaters that are designed to fit into tight retrofit applications.
Unit of Measure

Specifications

Manufacturer

 N/A Rheem®

Tank Capacity

 N/A 91 gal

Input Power

 N/A 199900 BTU/hr

Thermal Efficiency

 N/A 82 %

Standard Approximate Shipping Weight

 N/A 600 lb

Voltage

 N/A 120 V

Current

 N/A 1.5 A

Working Pressure

 N/A 150 psi

Style

 N/A Universal™ Ultra-Low NOx

Size

 N/A C

Type

 N/A Natural Gas

Industry Standards

 N/A ANSI Z-21.10.3 - CSA 4.3 ASHRAE Standards 90.1b-2001 CSA® Certified

Maximum Recovery

Recovery at 40 ºF Temperature Rise

 N/A 485 gal/h

Recovery at 50 ºF Temperature Rise

 N/A 388 gal/h

Recovery at 60 ºF Temperature Rise

 N/A 323 gal/h

Recovery at 70 ºF Temperature Rise

 N/A 277 gal/h

Recovery at 80 ºF Temperature Rise

 N/A 242 gal/h

Recovery at 90 ºF Temperature Rise

 N/A 215 gal/h

Recovery at 100 ºF Temperature Rise

 N/A 194 gal/h

Recovery at 110 ºF Temperature Rise

 N/A 176 gal/h

Recovery at 120 ºF Temperature Rise

 N/A 162 gal/h

Recovery at 130 ºF Temperature Rise

 N/A 149 gal/h

Recovery at 140 ºF Temperature Rise

 N/A 138 gal/h

First Time Delivery

First Time Delivery at 100 ºF (5 Minutes)

 N/A 80 gal

First Time Delivery at 100 ºF (10 Minutes)

 N/A 96 gal

First Time Delivery at 100 ºF (15 Minutes)

 N/A 112 gal

First Time Delivery at 100 ºF (20 Minutes)

 N/A 128 gal

First Time Delivery at 100 ºF (30 Minutes)

 N/A 161 gal

First Time Delivery at 100 ºF (45 Minutes)

 N/A 209 gal

First Time Delivery at 100 ºF (60 Minutes)

 N/A 258 gal

First Time Delivery at 100 ºF (120 Minutes)

 N/A 451 gal

First Time Delivery at 100 ºF (180 Minutes)

 N/A 645 gal

Minimum to Recovery Contents

 N/A 28

Dimensions

Schematic

 N/A
Schematic Drawing for Universal™ Ultra-Low NOx is a Family of Commercial Gas Water Heaters

Dimension A

 N/A 76-5/16 in

Dimension B

 N/A 71-13/16 in

Dimension C

 N/A 26-1/4 in

Dimension D

 N/A 30-5/8 in

Dimension E

 N/A 6 in

Dimension F

 N/A 66-3/8 in

Dimension G

 N/A 3/4 in

Dimension H

 N/A 20 in

Top Inlet/Outlet Water Connection

 N/A 1-1/2 in

Front Side Water Connection

 N/A 1-1/2 in

Rear Side Water Connection

 N/A 1-1/2 in

Clearances to Combustibles

Side Clearance to Combustibles

 N/A 2 in

Rear Clearance to Combustibles

 N/A 2 in

Top Clearance to Combustibles

 N/A 12 in

Features and Benefits

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 ultra low NOx installations. Choose from 80% thermal efficiency models that range from 125,000-399,900 Btu/h and 82% thermal efficiency models that range from 199,900 - 270,000 Btu/h. All models have a maximum temperature setting of 180 ºF.

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.

Ultra Low NOx Burner
The power assist burner design incorporates stainless steel multi-port burner tubes for long term low NOx performance, less than 14 ng/J. A sight glass allows for burner observation. The entire design is removable and it is highly resistant to the effects of negative air pressure common in modern commercial buildings.

Base Rail Design
Provides for better handeling when moving and positioning unit.

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.

Patented Anode Rods
Anode design utilizes multiple magnesium rods to ensure corrosion resistance for a long tank life.

General Information

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 Z-21.10.3; 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.

Testing and Certifications

Testing and Certifications

 N/A Altitude Certifications
Universal ultra low NOx is certified up to 2,000 feet. High altitude certification for model GNU100-200(A) is 5,200 feet

Warranty

Warranty

 N/A
  • 3-Year Limited Tank Warranty.

Note

Note

 N/A Recovery ratings are based on thermal efficiencies obtained in a CSA certified laboratory.

Water heater(s) shall be constructed in accordance with the requirements of the ASME Boiler and Pressure Vessel Code, Section IV Part HLW.

Top-Front-Rear Inlet/Outlet Water Connections.