21
42BHC ELECTRIC HEATER DATA AVAILABILITY
42BHC ELECTRIC HEATER DATA
LEGEND
NOTES:
1. Stages available:
Single phase:1-4 kW, 1 stage only
5-12 kW, 1 stage or 2 stage
Three phase:1-12 kW, 1 stage only
15-20 kW, 1 or 2 stage
25-40 kW, 1, 2 or 3 stage
2. Electric Heating Capacities (Btuh) = Heater kW x 3413
3. Electric Heater Amperage for Single-phase Power = (Heater kW x 1000)/Applied Voltage Electric Heater Amperage for Three-phase Power = (Heater kW x 1000)/(Applied Voltage x 1.73).
MOTOR PERFORMANCE DATA (AMPS)
NOTES:
1. Motor Full Load Amps refer to National Electric Code (NEC) Amps;
actual motor nameplate amps may vary.
2. NEC data extrapolated for 277 v.
3. Motors are open drip proof, ball bearing, single speed, 1750 rpm
rated at continuous duty, 40° C (104° F) ambient with reversible
rotation.
Controls
Standard control features
• 4 in. x 4 in. junction box
Note that the motor leads are wired to the 4 in. x 4 in.
junction box which is mounted on the external panel.
Motor control options
• Interlocking disconnect switch*
• 24-v class 2 transformer (40 va)†
• 8-pole control terminal strip
• Motor power fusing*
• Motor control contactor**
Motor and electric heat control options
NOTE: Electric heat option requires same voltage as motor
and must include the control option. These control features
are standard with electric heat options and control option.
• Interlocking disconnect switch*
• Heater power fusing*
• 24-v class 2 transformer (40 va)†
• 8-pole control terminal strip
• Auto reset temperature limit switch
• Manual reset backup temperature limit switch
• Airflow safety switch
• 80/20 heater element wire
• Motor power fusing*
• Motor control contactor**
• Agency listed for 0-in. clearance
Electric heat options:
• Single-phase, single-stage or 2-stage heat
• Three-phase, single-stage, 2- or 3-stage heat
*Complies with NEC’s fused disconnect requirement.
†No control fusing necessary.
**Complies with NEC’s requirement for a motor starter with internal
heating elements when used with the factory’s standard motors with
integral thermal overload protection.
kW
42BHC UNIT SIZE
08
12
16
20
30
40
1
●
—
—
—
—
—
2
●
●
—
—
—
—
3
●
●
●
—
—
—
4
●
●
●
●
—
—
5
●
●
●
●
—
—
6
●
●
●
●
●
●
8
●
●
●
●
●
●
10
—
●
●
●
●
●
12
—
●
●
●
●
●
15
—
—
●
●
●
●
16
—
—
●
●
●
●
20
—
—
—
●
●
●
25
—
—
—
—
●
●
30
—
—
—
—
●
●
35
—
—
—
—
—
●
40
—
—
—
—
—
●
kW
FULL LOAD AMPS
Single-Phase
Three-Phase
120 V
208 V
240 V
277 V
208 V
240 V
480 V
1
8.3
4.8
4.2
3.6
2.8
2.4
1.2
2
16.7
9.6
8.3
7.2
5.6
4.8
2.4
3
25.0
14.4
12.5
10.8
8.3
7.2
3.6
4
33.3
19.2
16.7
14.4
11.1
9.6
4.8
5
41.7
24.0
20.8
18.1
13.9
12.0
6.0
6
—
28.8
25.0
21.7
16.7
14.4
7.2
8
—
38.5
33.3
28.9
22.2
19.2
9.6
10
—
47.6
41.3
35.7
27.5
23.8
11.9
12
—
—
—
43.3
33.3
28.9
14.4
15
—
—
—
—
41.6
36.1
18.0
16
—
—
—
—
44.4
38.5
19.2
20
—
—
—
—
—
47.9
23.9
25
—
—
—
—
—
—
30.1
30
—
—
—
—
—
—
36.1
35
—
—
—
—
—
—
42.1
40
—
—
—
—
—
—
48.0
●
—
Standard Offering
VOLTAGE
V-PH-Hz
Nominal HP
1
/
4
1
/
3
1
/
2
3
/
4
1
1
1
/
2
2
3
115-1-60
5.2
6.0
8.6
13.3
14.4
—
—
—
208-1-60
3.0
3.6
4.8
6.5
7.4
9.4
11.0
—
230-1-60
2.5
3.0
4.2
6.6
6.0
9.0
10.9
—
277-1-60
2.1
2.5
3.6
5.1
5.4
8.5
8.0
—
208-3-60
—
—
2.4
3.6
3.8
6.0
6.5
8.2
230-3-60
—
—
2.2
3.0
3.2
4.8
6.2
8.0
460-3-60
—
—
1.1
1.5
1.9
2.8
3.1
4.0
Electrical data
