Lennox CB29M-21, Unit Information

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TABLE 11– ELECTRIC HEAT DATA (3 PHASE) – CB30M–41, CB30M–51 & CB30M–65
Blower Coil
Model
Electric Heat kW,
Model Number
Number of Volts kW Btuh
Blower
Motor
{
Minimum Circuit
Model
Number
Model Number
& Shipping Weight
Steps Input Input Input
Motor
Amps
{
Ampacity
b
460v–3 ph
b
ECB29 10
440 8.4 28,700 1.1 15
10 kW
ECB29-10
(28K47)
12 lbs (5 kg)
3 steps
460 9.2 31,400 1.1 16
CB30M 41
12 lbs. (5 kg)
480 10.0 34,100 1.1 16
CB30M-41
ECB29 15
440 12.6 43,000 1.1 22
15 kW
ECB29-15
(28K48)
12 lbs (5 kg)
3 steps 460 13.8 47,000 1.1 23
12 lbs. (5 kg)
480 15.0 51,200 1.1 24
ECB29 10
440 8.4 28,700 1.3 16
10 kW
ECB29-10
(28K47)
12 lbs (5 kg)
3 steps
460 9.2 31,400 1.3 16
12 lbs. (5 kg)
480 10.0 34,100 1.3 17
ECB29 15
440 12.6 43,000 1.3 22
15 kW
ECB29-15
(28K48)
12 lbs (5 kg)
3 steps 460 13.8 47,000 1.3 23
CB30M 51
12 lbs. (5 kg)
480 15.0 51,200 1.3 24
CB30M-51
ECB29 20
440 16.8 57,300 1.3 29
20 kW
ECB29-20
(28K49)
18 lbs (8 kg)
3 steps
460 18.4 62,700 1.3 29
18 lbs. (8 kg)
480 20.0 68,200 1.3 32
ECB29 25
440 21.0 71,700 1.3 36
25 kW
ECB29-25
(28K50)
18 lbs (8 kg)
3 steps 460 23.0 78,300 1.3 38
18 lbs. (8 kg)
480 25.0 85,300 1.3 39
ECB29 10
440 8.4 28,700 1.3 16
10 kW
ECB29-10
(28K47)
12 lbs (5 kg)
3 steps
460 9.2 31,400 1.3 17
12 lbs. (5 kg)
480 10.0 34,100 1.3 17
ECB29 15
440 12.6 43,000 1.9 23
15 kW
ECB29-15
(28K48)
12 lbs (5 kg)
3 steps 460 13.8 47,000 1.9 24
CB30M 65
12 lbs. (5 kg)
480 15.0 51,200 1.9 25
CB30M-65
ECB29 20
440 16.8 57,300 1.9 30
20 kW
ECB29-20
(28K49)
18 lbs (8 kg)
3 steps 460 18.4 62,700 1.9 31
18 lbs. (8 kg)
480 20.0 68,200 1.9 32
ECB29 25
440 21.0 71,700 1.9 37
25 kW
ECB29-25
(28K50)
18 lbs (8 kg)
3 steps 460 23.0 78,300 1.9 39
18 lbs. (8 kg)
480 25.0 85,300 1.9 40
b
575v–3 ph
b
ECB29 20
550 16.8 57,300 1.3 24
20 kW
ECB29-20
(28K51)
18 lbs (8 kg)
3 steps 575 18.4 62,700
1.3
25
{
CB30M 51
18 lbs. (8 kg)
600 20.0 68,200 1.3 26
{
CB30M-51
ECB29 25
550 21.0 71,700 1.3 29
25 kW
ECB29-25
(28K52)
18 lbs (8 kg)
3 steps 575 23.0 78,300
1.3
31
18 lbs. (8 kg)
600 25.0 85,300 1.3 32
ECB29 20
550 16.8 57,300
1.9
24
20 kW
ECB29-20
(28K51)
18 lbs (8 kg)
3 steps 575 18.4 62,700
1.9
26
{
CB30M 65
18 lbs. (8 kg)
600 20.0 68,200 1.9 26
{
CB30M-65
ECB29 25
550 21.0 71,700
1.9
30
25 kW
ECB29-25
(28K52)
18 lbs (8 kg)
3 steps
575 23.0 78,300 1.9 31
18 lbs. (8 kg)
600 25.0 85,300
1.9
32
{
Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Use wires suitable for at least 167
°
F (75
_
C).
Electric heater capacity only — does not include additional blower motor heat capacity.
Minimum circuit ampacity for blower motor only.
ALL 575v ELECTRIC HEATERS ARE USED WITH 460v CB30M-51 & CB30M-65 MODEL BLOWER COIL UNITS – A 575v to 460v STEP-DOWN TRANS-
FORMER FOR THE BLOWER COIL UNIT IS FURNISHED WITH ALL 575v ELECTRIC HEATERS.
Blower motor is rated at 460v.