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2017 Lennox Industries Inc.
Corp. 1701-L3
Service Literature
May 2017
CBA27UHE
Elite
®
Series CBA27UHE Units
IT IS HIGHLY RECOMMENDED IF THE AIR HANDLER IS INSTALLED IN A
UNCONDITIONED SPACE THAT A CIRCUIT BREAKER COVER (ORDERED
SEPARATELY) IS USED. ORDER LENNOX CATALOG # 82W01.
CIRCUIT BREAKER
OPENING
CIRCUIT BREAKER
COVER
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause personal injury, loss of life, or
damage to property.
Installation and service must be performed by a licensed
professional installer (or equivalent) or a service agency.
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 pro
tective clothing.
Table of Contents
Specifications / Electrical Data Page 2......
Blower Data Page 4......................
Parts Arrangement Page 6................
I Application Page 7......................
II Unit Components Page 7................
III Optional Electric Heat Page 9...........
IV Start Up Page 28.......................
V Typical Operating Characteristics Page 28..
VI Maintenance Page 29...................
VII Wiring Diagrams and Sequence
of Operations Page 32..................
The Elite CBA27UHE units are high efficiency blower coils
featuring an all-aluminum coil. Several models are avail
able in sizes ranging from 1‐1/2 through 5 tons (5.3 through
17.6 kW). The CBA27UHE is an upflow horizontal unit de
signed for HCFC-410A refrigerant. See unit installation in
structions for more detail. A kit is available for downflow ap
plications. CBA27UHE units come with a factory-installed
check / expansion valve for cooling or heat pump applica
tions.
CBA27UHE series units are designed to be matched with 14
SEER air conditioner or heat pump units. While these blower
coil units are designed to be primarily matched with these out
door units, they may be matched with other air conditioners or
heat pumps as noted in the rating information.
ECB29 electric heat, in several voltages and kW sizes, can be
field installed in the CBA27UHE 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: Special procedures are required for clean
ing the aluminum coil in this unit. See page 29 in this manual
for information.
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