Lennox GWB9

P/N# 14683450, Rev. B [09/08]
RETAIN THESE INSTRUCTIONS FOR
FUTURE REFERENCE
These instructions must be
afxed on or adjacent to the boiler.
WARNING
Improper installation, adjustment,
alteration, service, or maintenance can
cause injury or property damage. Refer
to this manual. For assistance or additional
information consult a qualied installer,
service agency, or the gas supplier.
GWB9
GAS-FIRED, DIRECT VENT,
CONDENSING, HOT WATER
BOIlER
INSTALLATION
INSTRUCTIONS
PRODUCT LITERATURE
Lennox Industries Inc.
Dallas, Texas

Lennox GWB9 Specifications

General

Model	GWB9
Efficiency	Up to 95% AFUE
Fuel Type	Natural Gas or Propane
Heat Exchanger Material	Stainless Steel
Ignition Type	Direct Spark Ignition
AFUE	Up to 95%
Type	Hot Water Boiler
Vent Type	Direct vent (sealed combustion)
Input (BTU/h)	40, 000
Output (BTU/h)	38, 000
Modulation	5:1