Electric Heat Data (1 Phase) – Cb29M–21/26 & Cb29M–31 - Lennox ELITE 10 CB29M Series Unit Information

TABLE 2– ELECTRIC HEAT DATA (1 PHASE) – CB29M–21/26 & CB29M–31
Electric Heat kW,
Blower Coil
Model Number
Model Number Model Number
& Shipping Weight
ECB29-2.5
2.5 kW 2 5 kW
4 lbs. (2 kg)
5 kW 5 kW
ECB29-5CB ECB29-5CB
4 lbs (2 kg) 4 lbs. (2 kg)
CB29M-21/26 CB29M-21/26
8 kW 8 kW ECB29-8CB ECB29-8CB
5 lbs. (2 kg) 5 lbs (2 kg)
ECB29-10 ECB29-10
10 kW 10 kW ECB29-10CB ECB29-10CB
5 lbs (2 kg) 5 lbs. (2 kg)
5 kW 5 kW
ECB29-5CB ECB29-5CB
4 lbs. (2 kg) 4 lbs (2 kg)
8 kW 8 kW ECB29-8CB ECB29-8CB
5 lbs. (2 kg) 5 lbs (2 kg)
ECB29-10 ECB29-10
CB29M-31 CB29M-31 10 kW 10 kW ECB29-10CB ECB29-10CB
5 lbs. (2 kg) 5 lbs (2 kg)
ECB29-12.5CB
12 5 kW 12.5 kW
10 lbs. (5 kg)
ECB29-15CB
15 kW 15 kW
10 lbs. (5 kg)
*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.
DMinimum circuit ampacity for blower motor only.
Number of
Steps Steps
b 208/230v–1 ph b
(28K30) (28K30) 1 step 1 step
ECB29-5 ECB29-5
(28K31)
1 step 1 step
(28K32)
ECB29-8 ECB29-8
(28K33)
2 steps 2 steps
(28K34)
(28K35)
2 steps 2 steps
(28K36)
ECB29-5 ECB29-5
(28K31)
1 step 1 step
(28K32)
ECB29-8 ECB29-8
(28K33)
2 steps 2 steps
(28K34)
(28K35)
2 steps 2 steps
(28K36)
(28K37) (28K37) 3 steps 3 steps
(28K38) (28K38) 3 steps 3 steps
Volts kW **Btuh
Input Input Input Input Input Input
208 1.9 6,400
220 2.1 7,200
230 2.3 7,800
240 2.5 8,500
208 3.8 12,800
220 4.2 14,300
230 4.6 15,700
240 5.0 17,100
208 6.0 20,500
220 6.7 22,900
230 7.3 25,100
240 8.0 27,300
208 7.5 25,600
220 8.4 28,700
230 9.2 31,400
240 10.0 34,100
208 3.8 12,800
220 4.2 14,300
230 4.6 15,700
240 5.0 17,100
208 6.0 20,500
220 6.7 22,900
230 7.3 25,100
240 8.0 27,300
208 7.5 25,600
220 8.4 28,700
230 9.2 31,400
240 10.0 34,100
208 9.4 32,000
220 10.5 35,800
230 11.5 39,200
240 12.5 42,600
208 11.3 38,400
220 12.6 43,000
230 13.5 47,000
240 15.0 51,200
Page 13
*Minimum
DBlower
Circuit Ampacity
Motor
Amps
Circuit 1 Circuit 2
1.5 13 – – – –
1.5 14 – – – –
1.5 14 – – – –
1.5 15 – – – –
1.5 25 – – – –
1.5 26 – – – –
1.5 27 – – – –
1.5 28 – – – –
1.5 38 – – – –
1.5 40 – – – –
1.5 42 – – – –
1.5 44 – – – –
1.5 47 – – – –
1.5 50 – – – –
1.5 52 – – – –
1.5 54 – – – –
2.4 26 – – – –
2.4 27 – – – –
2.4 28 – – – –
2.4 29 – – – –
2.4 39 – – – –
2.4 41 – – – –
2.4 43 – – – –
2.4 45 – – – –
2.4 48 – – – –
2.4 51 – – – –
2.4 53 – – – –
2.4 55 – – – –
2.4 22 38
2.4 23 40
2.4 24 42
2.4 25 44
2.4 26 45
2.4 27 48
2.4 28 49
2.4 29 52