Specification

PRINTED IN U.S.A. 06/17 WP FORM NO. RR102C-12 Rev. 6
Water
INTEGRATED HOME COMFORT
Commercial Gas
Universal Ultra Low NOx Water Heaters
I N TEGR ATED AIR & WATER
INTEGRATED HOME COMFORT
Features & Benefits
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°F.
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 ultra 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.
Altitude Certifications
GNU100-200(A) models are certified up
to 5,200 feet above sea level. All other
models are certified up to 2,000 feet.
Patented Anode Rods
Anode design utilizes multiple
magnesium rods to ensure corrosion
resistance for a long tank life.
Warranty
3-Year limited tank warranty
See Commercial Warranty Certificate for
complete information.
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 instal
-
lations. Certified for 150 PSI maximum working
pressure (160 PSI for ASME models).
Optional Construction | ASME construction is
available on designated models.
Universal
™
ultra low NOx is a family of
commercial gas water heaters that are
designed to fit into tight retrofit applications
Rheem
Universal Ultra Low NOx
35 to 100-Gallon Capacities
125,000-399,900 Btu/h
Natural Gas
Top-Front-Rear Inlet/Outlet
Water Connections
(On Selected
Models)