Lennox CB29M-41 User Manual

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

Lennox CB29M-41 Specifications

General

Brand	Lennox
Model	CB29M-41
Category	Air Conditioner
Language	English

Summary

Unit Information

Elite 10 CB29M and Elite 12 CB30M Series Units Including ECB29 Electric Heat

Overview of Elite blower coil units and their electric heat integration.

Blower Data - CB29M

CB29M-21/26 Blower Performance

Air volume and motor watts at various static pressures for CB29M-21/26.

CB29M-31 Blower Performance

Air volume and motor watts at various static pressures for CB29M-31.

CB29M-41 Blower Performance (208/230v)

Air volume and motor watts at various static pressures for CB29M-41.

CB29M-41 Blower Performance (460v – 1 ph)

Air volume and motor watts at various static pressures for CB29M-41 (460v).

CB29M-46 Blower Performance

Air volume and motor watts at various static pressures for CB29M-46.

CB29M-51 Blower Performance

Air volume and motor watts at various static pressures for CB29M-51.

CB29M-65 Blower Performance

Blower Data - CB30M

CB30M-21/26 Blower Performance

CB30M-31 Blower Performance

CB30M-41 Blower Performance (208/230v)

CB30M-41 Blower Performance (460v)

CB30M-46 Blower Performance

CB30M-51 Blower Performance

CB30M-65 Blower Performance

Unit Components

Control Box Components

Optional ECB29 Electric Heat

Matchups and Ratings

Electric Heat Components

Temperature Limits

Configuration Modifications

Start-Up and Operation

Preliminary and Seasonal Checks

Cooling Start-Up

Heating Start-Up

Safety Shutdown Procedures

Typical Operating Characteristics

Blower Operation and Adjustment

Blower Speed Taps

Maintenance

Filter Inspection and Replacement

Electrical System Checks

Wiring Diagrams and Sequence of Operations

208/230V Single Phase Sequence of Operation

Sequence of operations for CB29M/CB30M units in single-phase 208/230V configuration.

460V and 575V Three Phase Sequence of Operation

Sequence of operations for CB29M units in 460V/575V three-phase configuration.

ECB29-2.5, -5, -5CB, -8, -8CB 208/230V Single Phase Sequence of Operation

Detailed sequence of operations for specific ECB29 electric heat models in 208/230V single phase.

ECB29-10, -10CB 208/230V Single Phase Sequence of Operation

Detailed sequence of operations for ECB29-10 and -10CB electric heat in 208/230V single phase.

ECB29-12.5CB, -15CB 208/230V Single Phase Sequence of Operation

Detailed sequence of operations for ECB29-12.5CB and -15CB electric heat in 208/230V single phase.

ECB29-20CB 208/230V Single Phase Sequence of Operation

Detailed sequence of operations for ECB29-20CB electric heat in 208/230V single phase.

ECB29-25CB, -30CB 208/230V Single Phase Sequence of Operation

Detailed sequence of operations for ECB29-25CB and -30CB electric heat in 208/230V single phase.

ECB29-5, -8, -10, -15CB 208/230V Three Phase Sequence of Operation

Detailed sequence of operations for ECB29 electric heat in 208/230V three phase.

ECB29-20CB, -25CB 208/230V Three Phase Sequence of Operation

Detailed sequence of operations for ECB29-20CB and -25CB electric heat in 208/230V three phase.

ECB29-10, 15, 20, 25 – 460V and 575V Three Phase Sequence of Operation

Sequence of operations for ECB29 electric heat in 460V/575V three phase.