Lennox CB29M-21, Unit Information

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SPECIFICATIONS –CB29M
Model Number CB29M-21/26 CB29M-31 CB29M-41 CB29M-46 CB29M-51 CB29M-65
Net face area — ft.
2
(m
2
) 3.11 (0.29) 3.56 (0.33) 4.44 (0.41) 4.44 (0.41) 5.0 (0.46) 5.0 (0.46)
Tube outside diameter — in. (mm) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5)
Evaporator
Number of rows 2 2 2 3 3 3
Evaporator
Coil Fins per inch (fins per m) 14 (551) 14 (551) 14 (551) 12 (472) 12 (472) 12 (472)
Suct. (vapor) line conn.
– in. (mm) sweat
5/8 (16) 3/4 (19) 3/4 (19) 7/8 (22.2) 7/8 (22.2) 1-1/8 (28)
Liquid line conn. — in. (mm) sweat 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5)
Condensate drain connection (fpt) — in. (mm) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19)
Nominal cooling capacity — tons (kW)
1-5 – 2
(5.3 – 7.0)
2.5 (8.8) 3 (10.6) 3.5 (6.3) 4 (14.1) 5 (17.6)
Refrigerant HCFC-22
Blower wheel nominal diameter x width — in. (mm)
10 x 7
(254 x 178)
10 x 7
(254 x 178)
10 x 8
(254 x 203)
10 x 9
(254 x 229)
11-1/2 x 9
(292 x 229)
11-1/2 x 9
(292 x 229)
Blower motor output — hp (W) 1/5 (149) 1/3 (249) 1/3 (249) 1/2 (373) 3/4 (560) 3/4 (560)
Number and size of filters
in. (1) 15 x 20 x 1 (1) 20 x 20 x 1
Number and size of filters
mm (1) 381 x 508 x 25 (1) 508 x 508 x 25
Electrical characteristics (60hz) 208/230v–1ph
208/230v–1 ph
**460v–3 ph 208/230v–1 ph
208/230v – 1ph
**460v – 3 ph
***575v – 3 ph
Shipping weight — lbs. (kg) 1 package 121 (55) 123 (56) 156 (71) 160 (73) 181 (83) 181 (83)
Optional Accessories (Must Be Ordered Extra)
Side Return Unit Stand
(U Fl O l )
Catalog number 45K31 45K32
(Up-Flow Only)
Ship. wt. – lbs. (kg) 5 (2) 6 (3)
Wall Hanging Bracket Kit – Shipping weight – lbs.
(kg)
45K30 – 3 (1) (Up-Flow Only)
Down-Flow Combustible Base – Ship. wt. – lbs. (kg) 34J72 – 8 (4) 34J73 – 8 (4)
ECB29-2 5
*Output – Btuh (kW) 9,500 (2.8) 10,000 (2.9) - - - - - - - - - - - - - - - -
ECB29-2.5
A.F.U.E. 100% 100% - - - - - - - - - - - - - - - -
ECB29-5,
ECB29 5CB
*Output – Btuh (kW) 18,000 (5.3) 19,000 (5.6) 19,000 (5.5) 20,000 (5.8) 20,000 (5.8) - - - -
ECB29-5CB
A.F.U.E. 100% 100% 100% 100% 100% - - - -
ECB29-8,
ECB29 8CB
*Output – Btuh (kW) 28,000 (8.2) 29,000 (8.5) 29,000 (8.5) 30,000 (8.7) 30,000 (8.7) 31,000 (9.1)
ECB29-8CB
A.F.U.E. 100% 100% 100% 100% 100% 100%
ECB29-10,
ECB29 10CB
*Output – Btuh (kW) 35,000 (10.3) 36,000 (10.5) 36,000 (10.5) 37,000 (10.8) 37,000 (10.8) 37,500 (10.9)
El t i
ECB29-10CB
A.F.U.E.
100% 100% 100% 100% 100% 100%
Electric
Heat
C i
ECB29-12 5CB
*Output – Btuh (kW) - - - - 44,500 (13.0) 44,500 (13.0) 45,500 (13.3) 45,500 (13.3) 46,000 (13.5)
Capacity
(1 phase)
ECB29-12.5CB
A.F.U.E.
- - - - 100% 100% 100% 100% 100%
( p )
ECB29-15CB
*Output – Btuh (kW) - - - - 53,000 (15.5) 53,000 (15.5) 54,000 (15.8) 54,000 (15.8) 55,000 (16.1)
ECB29-15CB
A.F.U.E. - - - - 100% 100% 100% 100% 100%
ECB29-20CB
*Output – Btuh (kW) - - - - - - - - 70,000 (20.5) 71,000 (20.8) 71,000 (20.8) 72,000 (21.1)
ECB29-20CB
A.F.U.E. - - - - - - - - 100% 100% 100% 100%
ECB29-25CB
*Output – Btuh (kW) - - - - - - - - - - - - - - - - 88,000 (25.8) 89,000 (26.1)
ECB29-25CB
A.F.U.E. - - - - - - - - - - - - - - - - 100% 100%
ECB29-30CB
*Output – Btuh (kW) - - - - - - - - - - - - - - - - - - - - 106,000 (31.0)
ECB29-30CB
A.F.U.E. - - - - - - - - - - - - - - - - - - - - 100%
Annual Fuel Utilization Efficiency based on U.S. DOE test procedures and according to FTC labeling regulations.
CB29M-21/26 thru CB29-46 furnished with disposable frame type filter, CB29M-51 and CB29M-65 furnished with cleanable polyurethane frame type filter.
*Includes additional blower motor heat capacity.
**Blower motor is 460v single phase.
***Blower motor is 460v single phase. 575v electric heaters are shipped with step–down transformer for use with 460v units (CB29M-51 & CB29M-65 models only).