Lennox CB29M-51 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-51 Specifications

General

Product Type	Air Conditioner
Model Number	CB29M-51
Refrigerant Type	R-410A
Voltage	208/230V
Phase	1

Summary

Specifications

CB29M Specifications

Detailed specifications for the CB29M series units.

CB30M Specifications

Blower Data

CB29M Blower Performance Data

Air volume and motor watts at specific blower taps for CB29M.

CB30M Blower Performance Data

Air volume and motor watts at specific blower taps for CB30M.

Optional Electric Heat

Start-Up and Operation

Preliminary Checks and Seasonal Maintenance

Cooling and Heating Start-Up Procedures

Step-by-step guide for starting the unit in cooling and heating modes.

Typical Operating Characteristics

Blower Operation and Adjustment

Blower Speed Selection and Testing

Maintenance and Checks

Filter Maintenance and Replacement

Wiring Diagrams and Sequences of Operation

208/230V Single Phase Sequences

Step-by-step operation for single-phase units in heating and cooling.

460/575V Three Phase Sequences

Step-by-step operation for three-phase units.

Electric Heat Stage Sequences

Detailed sequence of operation for various electric heat stages.