Lennox ML296UHV Series Unit Information

Page 1
UNIT INFORMATIONUNIT INFORMATION
Service Literature
©2016 Lennox Industries, Inc.
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WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause property damage,
personal injury or loss of life. Installation and service
must be performed by a licensed professional HVAC
installer (or equivalent), service agency or the gas
supplier.
CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal
injury. Take care while handling this equipment and
wear gloves and protective clothing.
ML296UHV(X) series units are 90% e󰀩ciency gas furnac-
es used for downow applications only, manufactured with
Lennox Duralok heat exchangers formed of aluminized
steel. ML296UHV(X) units are available in heating capac-
ities of 44,000 to 110,000 Btuh and cooling applications
up to 5 tons. Refer to Engineering Handbook for proper
sizing.
Units are factory equipped for use with natural gas. Kits
are available for conversion to LPG operation. ML296U-
HV(X) unit meets the California Nitrogen Oxides (NOx)
Standards and California Seasonal E󰀩ciency require-
ments. All units use a redundant gas valve to assure safe-
ty shut-o󰀨 as required by C.S.A.
All specications in this manual are subject to change.
Procedures outlined in this manual are presented as a
recommendation only and do not supersede or replace lo-
cal or state codes. In the absence of local or state codes,
the guidelines and procedures outlined in this manual (ex-
cept where noted) are recommendations only and do not
constitute code
TABLE OF CONTENTS
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
Blower Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
I Unit Components . . . . . . . . . . . . . . . . . . . . . . . . Page 9
II Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
III Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 43
IV Heating System Service Checks . . . . . . . . . Page 44
V Typical Operating Characteristics . . . . . . . . . Page 47
VI Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . Page 47
VII Wiring and Sequence of Operation . . . . . . Page 50
ML296UHV(X)
Corp 1903-L1
Revised 01/2022
ML296UHV(X) SERIES UNITS

Lennox ML296UHV Series Specifications

General

Brand	Lennox
Model	ML296UHV Series
Category	Furnace
Language	English