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Lennox CB29M-31 User Manual

Lennox CB29M-31
44 pages
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Page 1
Corp. 9711–L7
CB29M
CB30M
Service Literature
ELITE 10 CB29M and ELITE 12 CB30M SERIES UNITS
INCLUDING ECB29 ELECTRIC HEAT
The Elite 10 CB29M and Elite 12 CB30M 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). Both the
CB29M and CB30M are multi-position (upflow, downflow
or horizontal) units. The units come with a factory
installed check and expansion valve for cooling or heat
pump applications.
CB29M series units are designed to be matched with the
10 SEER air conditioner and heat pump line, and the
CB30M series units are designed to be matched with the
12 and 13 SEER air conditioner and heat pump lines.
While these blower coil units are designed to be primarily
matched with these outdoor 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 CB29M and CB30M cabinets.
Information contained in this manual is intended for use
by experienced HVAC service technicians only. All specifi-
cations are subject to change. Procedures outlined in this
manual are presented as a recommendation only and do
not supersede or replace local or state codes.
CB29M CB30M

Table of Contents

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Lennox CB29M-31 Specifications

General IconGeneral
Tonnage2.5 Tons
Cooling Capacity30, 000 BTU/h
Refrigerant TypeR-410A
Operating Voltage208/230V
Phase1
Sound Level (Outdoor Unit)76 dB
SEER RatingUp to 14 SEER
Unit Weight180 lbs

Summary

Unit Components and Arrangement

Control Box Details

Explains the control box, wiring, and components.

Unit Specifications and Electrical Components

Electrical Components

Describes transformers, relays, breakers, and switches.

Blower and Coil Assembly

Blower Motor and Capacitor

Covers blower motor types, speeds, and capacitor ratings.

Electric Heat Specifications

Optional Electric Heat System

Electric Heat Circuit Protection

Configuration Modifications

Installation Configurations

Horizontal Discharge Setup

Operation and Maintenance

Operating Characteristics

Maintenance Procedures

Wiring Diagrams and Sequences of Operation

Single Phase Sequences of Operation

Explains heating/cooling sequences for single-phase units.

Three Phase Sequences of Operation

Three Phase Sequences of Operation

Explains heating/cooling sequences for three-phase units.

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