Electric Heat Data - Cbx40Uhv-024 And Cbx40Uhv-030 - Lennox CBX40UHV Series Installation And Service Procedure

ELECTRIC HEAT DATA - CBX40UHV-024 AND CBX40UHV-030

SINGLE PHASE ELECTRIC HEAT
Model Number
2.5 kW ECB40-2.5 (34W86)
4 lbs. Terminal Block
ECB40-4 (55W89)
4 kW
Terminal Block
4 lbs.
ECB40-4CB (55W90)
30A Circuit breaker
ECB40-5 (34W87)
5 kW
Terminal Block
4 lbs.
ECB40-5CB (34W90)
35A Circuit breaker
EB40-6 (34W88)
6 kW Terminal Block
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.
ECB40-15CB (34W95)
15 kW
(1) 35A & (1) 60A Circuit
12 lbs.
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.
CBX40UHV
No.
Volts
of
Input
Stages
208
220
1
230
240
208
220
1
230
240
208
220
1
230
240
208
220
1
230
240
208
220
1
230
240
208
220
2
230
240
208
220
2
230
breaker
240
208
220
2
230
breaker
240
2
Blower
1
kW Btuh Motor
Input Input Full Load
Amps
1.9 6,400 4.0
2.1 7,200 4.0
2.3 7,800 4.0
2.5 8,500 4.0
3.0 10,250 4.0
3.4 11,450 4.0
3.7 12,550 4.0
4.0 13,650 4.0
3.8 12,800 4.0
4.2 14,300 4.0
4.6 15,700 4.0
5.0 17,100 4.0
4.5 15,400 4.0
5.0 17,100 4.0
5.5 18,800 4.0
6.0 20,500 4.0
6.0 20,500 4.0
6.7 22,900 4.0
7.3 25,100 4.0
8.0 27,300 4.0
6.8 23,100 4.0
7.6 25,800 4.0
8.3 28,200 4.0
9.0 30,700 4.0
9.4 32,000 4.0
10.5 35,800 4.0
11.5 39,200 4.0
12.5 42,600 4.0
11.3 38,400 4.0
12.6 43,000 4.0
13.8 47,000 4.0
15.0 51,200 4.0
Page 27
CBX40UHV-024
3
3 5
Minimum Maximum
Ampacity
Circuit Overcurrent
Ampacity Protection
1
17 20 - - -
17 20 - - -
18 20 - - -
18 20 - - -
4
23 25 23
4
24 25 24
4
25 25 25
26 30 26
4
28 30 28
4
29 30 29
4
30 30 30
31 35 31
4
32 35 32
4
33 35 33
4
35 35 35
37 40 37
4
41 45 41
4
43 45 43
4
45 45 45
47 50 47
4
46 50 46
4
48 50 48
50 60 50
52 60 52
- - - - - - 24
- - - - - - 25
- - - - - - 26
- - - - - - 27
- - - - - - 28
- - - - - - 29
- - - - - - 30
- - - - - - 31
CBX40UHV-030
5
Minimum Maximum
Circuit Overcurrent
Protection
Circuit Circuit
2 1 2
- - - - - - - - -
- - - - - - - - -
- - - - - - - - -
- - - - - - - - -
4
- - - 25 - - -
4
- - - 25 - - -
4
- - - 25 - - -
- - - 30 - - -
4
- - - 30 - - -
4
- - - 30 - - -
4
- - - 30 - - -
- - - 35 - - -
4
- - - 35 - - -
4
- - - 35 - - -
4
- - - 35 - - -
- - - 40 - - -
4
- - - 45 - - -
4
- - - 45 - - -
4
- - - 45 - - -
- - - 50 - - -
4
- - - 50 - - -
4
- - - 50 - - -
- - - 60 - - -
- - - 60 - - -
4 4
38 25 40
4 4
40 25 40
42 30 45
44 30 45
4 4
45 30 45
4 4
48 30 50
4 4
50 30 50
52 35 60