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COMMERCIAL-GRADE
RESIDENTIAL GAS WATER HEATERS
PROLINE® MASTER ATMOSPHERIC VENT
COMMERCIAL-GRADE RESIDENTIAL
INTELLIGENT CONTROL LOGIC*
• The internal microprocessor provides
enhanced operating parameters and tighter
differentials for precise sensing and faster
heating response to optimize performance.
• Uses a thermopile to generate the power
needed to operate the electronic gas control
without requiring an external power source.
• The electronic gas control incorporates an
LED status indicator that monitors system
operation and service diagnostics.
• *Not available on 60,000 BTU input models
(GCRX-50 and GCRX-55).
GREEN CHOICE® GAS BURNER
• Patented eco-friendly burner design reduces
NOx emissions by up to 33% and complies
with Low-NOx emission requirements of less
than 40 ng/J.
DYNACLEAN™ DIFFUSER DIP TUBE
• Reduces lime and sediment buildup and
maximizes hot water output. Made from
long-lasting PEX cross-linked polymer.
COREGARD™ ANODE ROD
• Our anode rods have a stainless steel core
that extends the life of the anode rod
allowing superior tank protection far longer
than standard anode rods.
• ProLine® Master products have increased
anode protection with either longer, or
multiple anodes depending on model.
PUSH-BUTTON PIEZO IGNITOR
• Makes lighting the pilot fast and easy with
one-hand push-button spark ignition.
HEAT TRAP NIPPLES
• Factory-installed for faster installation.
BLUE DIAMOND® GLASS COATING
• Provides superior corrosion resistance
compared to industry standard glass lining.
• Blue Diamond® Glass coating blend is
formulated in the same lab that creates
the protection for our industry-leading
commercial product line.
ENHANCED-FLOW BRASS DRAIN
VALVE
• Our residential water heaters have a solid
brass, tamper resistant, enhanced-flow, ball
type, drain valve.
• Uses a standard female hose fitting that
allows for fast and easy draining during
maintenance.
• Designed for easy operation, this valve
includes an integral screwdriver slot that
features a 1/4 turn (open/close) radius, which
not only permits full straight-through water
flow but also a quick and positive shut off.
CODE COMPLIANCE
• Meets UBC, CEC and HUD National Codes.
• Meets the thermal efficiency and standby
loss requirements of the U. S. Department
of Energy and current edition of ASHRAE/
IES 90.1.
• Complies with the Federal Energy
Conservation Standards effective April 16,
2015, in accordance with the Energy Policy
and Conservation Act, (EPCA), as amended.
HIGH UNIFORM ENERGY FACTOR (UEF)
• Eco-Friendly non-CFC foam insulation,
external heat traps and specially designed
combustion chamber combine to produce
a high UEF for maximum savings on
operating costs.
CSA CERTIFIED AND ASME RATED T&P
RELIEF VALVE
MAXIMUM HYDROSTATIC WORKING
PRESSURE 150 PSI
DESIGN-CERTIFIED BY CSA
INTERNATIONAL
• Certified at 300 psi test pressure and 150
psi working pressure. Listed according to
ANSI Z21.10.1-CSA 4.1 standards governing
storage tank-type gas water heaters.
8-YEAR LIMITED TANK AND PARTS
WARRANTY
© May 2017 A. O. Smith Corporation. All rights reserved.
www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015
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AOSRG47104
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COMMERCIAL-GRADE
RESIDENTIAL GAS WATER HEATERS
Model
Number
Tall Models
HWR 40 40 38 80 0.66 40,000 36,000 42 61-3/4 58-1/4 20 12-1/4 8 52 N/A N/A 3 or 4 138
HWG 50 50 48 81 0.62 40,000 37,000 41 60-3/4 57-1/4 21 12-1/4 8 50 1/2 N/A N/A 3 or 4 148
HWR 50 50 48 84 0.62 40,000 37,000 43 60-3/4 57-1/4 22 12-1/4 8 50-1/2 N/A N/A 3 or 4 165
HWRT 50* 50 48 89 0.61 50,000 45,000 54 60-3/4 57-1/4 22 12-1/4 8 50-1/2 14-1/4 50-1/2 4 165
HWRX 55* 55 55 83 0.62 60,000 54,000 65 59-3/4 55-1/4 24 13-1/2 8 48 14-1/4 48 4 185
Short Models
HWRL 40 40 38 67 0.59 40,000 36,000 41 51-1/2 48 22 12 8 41-1/4 N/A N/A 3 or 4 135
HWRL 50 50 50 81 0.62 40,000 40,000 43 53-1/4 49-3/4 24 12 8 41-3/8 N/A N/A 3 or 4 177
Recovery capacities based on actual performance tests.
Water connection is 3/4” on all models
*For optional side-mounted recirculating taps, add “L” to the suffix (example: HWRT 50L).
All models approved for installation from sea level to 10,100 ft. elevation.
Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement.
Nominal
Gallon
Capacity
Rated
Storage
Volume
First
Hour
Rating
Gallon
FLAMMABLE VAPOR IGNITION RESISTANT
UEF
BTU
Input
Natural
Gas
BTU
Input
Propane
Gas
Recovery
90°F Rise
Gallon
Per Hour
Dimensions in Inches Approx.
A B C D E F *G *H
ANODE ROD
Draft
Hood
Shipping
(FVIR) WATER HEATERS
A. O. Smith FVIR design meets the American
National Standards Institute standards
(ANSIZ21.10.1-CSA 4.1) that deal with the
CONNECTION
HOT
accidental or unintended ignition of flammable
vapors, such as those emitted by gasoline.
Features a sealed combustion chamber with intake
air filter and a flame arrestor built into the water
heater base. In addition, a thermal cutoff (TCO)
E
C
COLD
CONNECTION
device, is designed to shut off gas flow to the
burner and pilot if poor combustion is detected.
Weight
(lbs)
T&P VALVE
1/2" GAS
F
H
A
B
CONNECTION
D
G
Maximum Hydrostatic Working Pressure: 150 PSI
For technical information call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
© May 2017 A. O. Smith Corporation. All rights reserved.
www.hotwater.com | 800-527-1953 Toll-Free USA
AOSRG47104
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