A. O. Smith BLN-80 User Manual
Commercial Gas Water Heaters
CONSERVATIONIST® ULTRA-LOW NOX
CONSERVATIONIST® ULTRA-LOW NOX
FEATURES
The BLN-80 commercial gas water heater meets California Air Quality Management
District Requirements for NOx emissions of 14 ng/j or 20 ppm. This model is
equipped with a pre-wired, factory-mounted blower. This blower provides more
efficient control of heat and helps ensure an adequate supply of make-up air. Prior
to ignition, the control proves a working draft.
FACTORY-INSTALLED BLOWER
Q Control proves draft prior to ignition
Q No draft hood or barometric damper required
Q Blower is factory-mounted with a 6-foot power cord: requires 120V, 3 amp or less
electrical system connection
INTELLI-VENT™ GAS CONTROL
Q Equipped with nearly indestructible silicon nitride hot surface ignitor
Q Advanced electronics for precise control of water temperature
Q Easy-to-understand system diagnostics
RATED AS CATEGORY I APPLIANCE
Q Category I appliance: uses standard metal, single-wall or “B” type vent
Q May be common vented with other Category I appliances
Q Vent connects directly to blower outlet
FULLY AUTOMATIC CONTROL SYSTEM
Q Auto-reset gas shutoff device prevents excessive water temperature
Q Adjustable thermostat with 120°F - 180°F range
Q Gas pressure regulator
GLASSLINED TANK
Q Exclusive CoreGard™ anode rods with stainless steel core provides additional
corrosion protection
HANDHOLE CLEANOUT
Q Allows easy access to tank interior for cleaning
CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE
BLN-80
MAXIMUM HYDROSTATIC WORKING PRESSURE: 150 PSI
80% THERMAL EFFICIENCY
CODES AND STANDARDS
Q Design-certified according to ANSI Z21.10.3-CSA 4.3 standards governing storage-type
water heaters
Q California Energy Commission
Q Meets the thermal efficiency and standby loss requirements of the U.S. Department of
Energy and current edition of ASHRAE/IESNA 90.1
Q Design-certified by Underwriters Laboratories
Q Certified for use on combustible flooring
Q Complies with SCAQMD Rule 1146.2 and other Air Quality Management Districts with
similar requirements of 14 ng/j or 20 ppm
THREE YEAR LIMITED TANK AND ONE YEAR LIMITED PARTS WARRANTY
Q For complete warranty information, consult written warranty or contact A. O. Smith.
OPTIONS
OPTIONAL LEG KIT TO MEET NSF STANDARD 5
QbPart #9006645005)
Intelli -Vent™ is a registered tradem ark of Emerson Electric Company
March 2013R
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AOSCG10801
Commercial Gas Water Heaters
TOP VIEW
*INSTALL IN ACCORDANCE WITH LOCAL CODES
Dimensions in Inches/centimeters
Model Units A B C D E F G H J K L M
BLN-80
INCHES
65-7/8 57-7/8 30-15/16 25-1/4 15-1/2 4 15-3/8 16 2-1/4 1 1/2 12-1/4
CM
167.22 145.23 78.58 64.14 38.6 10.2 40.0 40.6 5.71 NPT NPT 31.1
Recovery Capacities (based on 80% thermal efficiency)
Approximate
Model
Capacity
Gallons Litres Btu/Hr. kW/Hr.
BLN-80 74 280 75,100 22
Input Rating
Type
of
Gas
GPH
LPH
30°F/
17°C
243
920
40°F/
23°C
182
688
50°F/
28°C
145
549
60°F/
33°C
122
460
Temperature Rise
70°F/
80°F/
39°C
44°C
104
91
392
344
90°F/
50°C
81
306
100°F/
56°C
73
277
110°F/
61°C
66
251
120°F/
67°C
60
228
130°F/
72°C
56
213
Gas and Electrical Characteristics
Model
Type of Gas Inches W.C. kPa Volts/Hz Amperes
BLN-80 Natural 4.0 1.12 120/60 <5
Natural gas water heater(s) shall be A. O. Smith BLN ________________ or equal, with a storage capacity of __________ gallons, an input rating of ________BTUs per hour, a
recovery rating of ______GPH at 100°F rise and a maximum hydrostatic working pressure of ________ psi. Water heaters(s) shall be supplied with a factory-installed blower
and 6-foot power cord; control will prove draft prior to ignition. Glasslined water heater(s) shall also be protected against electrolytic corrosion by a factory-installed
A. O. Smith CoreGard™ anode rod. In addition, water heater(s) shall be equipped with: 1) An Intelli-Vent™ gas control system with silicon nitride hot surface ignitor,
advanced electronics for precise control of water temperature, and easy-to-understand system diagnostics. 2) An auto-reset gas shutoff device, a gas pressure regulator, CSA
Certified and ASME rated T&P relief valve. 3) Certification by Underwriters Laboratories under Volume III tests for commercial water heaters for delivery of 180°F water. 4)
Design certification according to ANSI Z21.10.3 - CSA 4.3 standards governing storage-type water heaters. 5) Meets the thermal efficiency and standby loss requirements of
the U.S. Department of Energy and current edition of ASHRAE/IESNA 90.1 and meets Ultra-low NOx emissions of 14 ng/j or 20 ppm. 6) Have a 3-year limited tank and 1-year
limited parts warranty against corrosion as outlined in the written warranty.
Manifold Pressure Electrical Characteristics
SUGGESTED SPECIFICATION
140°F/
78°C
52
199
For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
www.hotwater.com
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AOSCG10801
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