Electric Heat Data - Cbx40Uhv-042, Cbx40Uhv-048, And Cbx40Uhv-060 - Lennox CBX40UHV Series Installation And Service Procedure

ELECTRIC HEAT DATA - CBX40UHV-036 (Continued)
THREE PHASE ELECTRIC HEAT
Model Number
20 kW ECB40-20CB (35W01)
19 lbs. (2) 35A Circuit breaker
NOTE - Circuit 1 Minimum Circuit Ampacity includes the Blower Motor Full Load Amps.
1
Electric heater capacity only - does not include additional blower motor heat capacity.
2
Amps shown are for blower motor only.
3
Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Use wires suitable for at least 167°F.
4
Bold text indicates that the circuit breaker on "CB" circuit breaker models must be replaced with size noted. See Table on Page 6.
5
HACR type circuit breaker or fuse.

ELECTRIC HEAT DATA - CBX40UHV-042, CBX40UHV-048, AND CBX40UHV-060

SINGLE PHASE ELECTRIC HEAT
Model Number
ECB40-4 (55W89)
4 kW
Terminal Block
4 lbs.
ECB40-4CB (55W90)
35A Circuit breaker
ECB40-5 (34W87)
5 kW Terminal Block
4 lbs. ECB40-5CB (34W90)
35A Circuit breaker
ECB40-6 (34W88)
Terminal Block
6 kW
4 lbs. ECB40-6CB (34W91)
40A Circuit breaker
ECB40-8 (34W89)
8 kW Terminal Block
5 lbs. ECB40-8CB (34W92)
50A Circuit breaker
9 kW ECB40-9CB (34W93)
5 lbs. 60A Circuit breaker
ECB40-12.5CB (34W94)
12.5 kW
(1) 30A & (1) 45A Circuit
10 lbs.
breaker
ECB40-15CB (34W95)
15 kW
(1) 35A & (1) 60A Circuit
12 lbs.
breaker
20 kW ECB40-20CB (34W96)
19 lbs. (2) 60A Circuit breaker
ECB40-25CB (34W97)
25 kW
(1) 60A & (2) 45A Circuit
19 lbs.
breaker
CBX40UHV
No.
Volts kW
of
Input Input
Stages
208 15.0
220 16.8
2
230 18.4
240 20.0
No. of Volts kW
Stages Input Input
1 208 3.0
1 208 3.8
1 208 4.5
1 208 6.0
2 208 6.8
2 208 9.4
2 208 11.3
2 208 15.0
3 208 18.8
Page 29
2
Blower
1
Btuh
Motor Full
Input
Load Amps
51,200 5.6
57,300 5.6
62,700 5.6
68,200 5.6
CBX40UHV-042, CBX40UHV-048 and CBX40UHV-060
3
2
Blower
Circuit Ampacity
1
Btuh Motor Full
Input Load
Circuit
Amps
1
10,250 7.4 27
12,800 7.4 32
15,400 7.4 37
20,500 7.4 46
23,100 7.4 51
32,000 7.4 29
38,400 7.4 32
51,200 7.4 50
64,100 7.4 47
CBX40UHV-036
3 5
Minimum
Circuit Overcurrent
Ampacity
33 26 35
35 28 35
4
36 29 40
4
37 30 40
5
Minimum Maximum
Overcurrent Protection
Circuit Circuit Circuit Circuit
2 3 1
4
- - - - - - 30
- - - - - - 35
- - - - - - 40
- - - - - - 50
- - - - - - 60
38 - - - 30
45 - - - 35
4
50 - - - 50
4
38 38 50
Maximum
Protection
4
30
4
30
4
30
35
Circuit
2 3
- - - - - -
- - - - - -
- - - - - -
- - - - - -
- - - - - -
4
40 - - -
4
45 - - -
4
50 - - -
4 4
40 40