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©
2005 Lennox Industries Inc.
Litho U.S.A.
Corp. 0527−L10
CB26UH
CBX26UH
Service Literature
CB26UH &CBX26UH Series
The CB26UH, and CBX26UH are high efficiency blower coils.
Several models are available in sizes ranging from 1-1/2
through 5 tons (5.3 through 17.6 kW). The CBX26UH is de-
signed for R−410A refrigerant and the CB26UH is designed for
R−22 refrigerant. The units are up flow / horizontal that can be
field converted to down flow applications. The units come with
a factory installed check and expansion valve for cooling or
heat pump applications.
CB26UH and CBX26UH series units are designed to be
matched with the 13SEER air conditioner and heat pump line,
but can be matched with other air conditioners or heat pumps
as noted in the rating information. See Engineering Handbook.
Electric heat, in several kW sizes, can be field installed in the
CB26UH and CBX26UH cabinets.
Information contained in this manual is intended for use by ex-
perienced HVAC service technicians only. All specifications are
subject to change. Procedures outlined in this manual are pre-
sented as a recommendation only and do not supersede or re-
place local or state codes.
IMPORTANT
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person-
al injury or loss of life. Installation and service must
be performed by a qualified installer or service
agency
.
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at discon-
nect switch(es). Unit may have multiple
power supplies.
Table of Contents
Specifications / Electrical Data
NO TAG
. . . . . .
Blower Data
Page 3
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I Application
Page 4
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II Unit Components
Page 5
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III Optional Electric Heat
Page 6
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IV Configuration Modification
Page 10
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V Start Up
Page 13
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VI Typical Operating Characteristics
Page 14
.
VII Maintenance
Page 14
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VIII Wiring Diagrams
Page 15
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