Submittal Sheet

© February 2018 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
COMMERCIAL-GRADE
RESIDENTIAL COMBI BOILERS
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AOSRG45018
FEATURES:
95% AFUE
ENERGY STAR
®
QUALIFIED
AVAILABLE IN NATURAL GAS OR
PROPANE (LP)
UP TO 74% MORE SPACE HEATING
CAPACITY THAN COMPETITIVE
COMBI BOILERS
MODULATING BURNER WITH 10:1
TURNDOWN
POWER DIRECT VENT DESIGN
• 2” up to 60 equivalent feet on the 110 and
150 models only
• 3” up to 100 equivalent feet on all models
• Flexible venting with PVC (solid core),
Polypropylene, CPVC, and stainless steel.
INDUSTRY LEADING DHW DELIVERY
UP TO 4.8 GPM @ 77°F RISE
FIRE TUBE HEAT EXCHANGER
• Innovative design increases heat transfer
• Lower pressure drop than water tube
designs
MAXIMUM WORKING PRESSURE
• 150 PSI DHW
• 50 PSI Boiler
COMPLIES WITH LEAD FREE
STANDARDS
USER FRIENDLY CONTROLS
• Programming the combi boiler takes less
than two minutes and uses plain text rather
than number codes.
AIR HANDLER INTERLOCK
• Priority control for DHW
QUICKER DHW RESPONSE
• Advanced control technology prevents the
cold water sandwich often found with other
combi boilers.
ACCESSORIES
• Low Water Cut-off with Manual Reset and
Test
• Neutralizer Kit
• Isolation Valve Kit
• Concentric Termination
• Sidewall Vent Termination
• Product Preservers
®
Anti-Scale System
• Floor Stand
• Wireless Outdoor Sensor
• Natural Gas to LP Conversion Kit
WARRANTY
• 10-year limited warranty on heat exchanger
in residential applications
• 5-year limited warranty on all parts
PROLINE
®
XE HIGH EFFICIENCY
COMBI BOILERS
COMMERCIAL-GRADE RESIDENTIAL
INDOOR MODELS
Ultra-Low NOx combi boiler provides high efficiency space heating and domestic hot
water (DHW) in a compact footprint that’s easy to install and maintain.