Lennox CB29M-65 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-65 Specifications

General

Product Type	Air Conditioner
Refrigerant Type	R-410A
Voltage	208/230V
Phase	1
Cooling Capacity	65000 BTU/h

Summary

CB29M SPECIFICATIONS

CB29M BLOWER PERFORMANCE DATA

CB29M-21/26, -31, -41 Performance (208/230v)

Air volume and motor watts at specific blower taps for CB29M-21/26, -31, and -41 units.

CB29M-41, -46 Performance (460v & 208/230v)

Blower performance data for CB29M-41 (460v) and -46 (208/230v) units.

CB29M-51 Performance (208/230v & 460v)

Blower performance data for CB29M-51 units at 208/230v and 460v.

CB30M SPECIFICATIONS

CB30M BLOWER PERFORMANCE DATA

CB30M-21/26, -31, -41 Performance (208/230v)

Air volume and motor watts at specific blower taps for CB30M-21/26, -31, and -41 units.

CB30M-41, -46 Performance (460v & 208/230v)

Blower performance data for CB30M-41 (460v) and -46 (208/230v) units.

CB30M-51, -65 Performance (460v & 208/230v)

Blower performance data for CB30M-51 and -65 units at various voltages.

OPTIONAL ELECTRIC HEAT (ECB29)

Electric Heat Components

Details on electric heat components like sequencers, relays, contactors, and limits.

CONFIGURATION MODIFICATIONS

START-UP AND OPERATION

Startup Procedures

Steps for performing preliminary checks, cooling start-up, and heating start-up.

MAINTENANCE

WIRING DIAGRAMS AND SEQUENCES OF OPERATION

208/230V Single Phase Sequence of Operation

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

460/575V Three Phase Sequence of Operation

Operational sequences for three-phase units with 460V and 575V power.

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

Step-by-step operation for specific single-phase electric heat configurations.

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

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

ECB29-20CB – 208/230V Single Phase Sequence

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

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

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

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