Electrical Data; Controls - Carrier 42BHC Product Data

Electrical data

42BHC ELECTRIC HEATER DATA AVAILABILITY
kW
08 12
G
1 —
G G
2
G G
3
G G
4
G G
5
G G
6
G G
8
G
10 —
G
12 —
15 — —
16 — —
— —
20
— —
25
30 — —
35 — —
40 — —
LEGEND
G — Standard Offering
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)
VOLTAGE
V-PH-Hz
1 / 1 /
4 3
115-1-60 5.2 6.0
208-1-60 3.0 3.6
230-1-60 2.5 3.0
277-1-60 2.1 2.5
208-3-60 — —
230-3-60 — —
460-3-60 — —
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)†
42BHC UNIT SIZE
16 20 30
— — —
— — —
G
— —
G G
—
G G
—
G G G
G G G
G G G
G G G
G G G
G G G
G G
—
G
— —
G
— —
— — —
— — —
Nominal HP
1 / 3 / 1 1 1 / 2
2 4 2
8.6 13.3 14.4 — —
4.8 6.5 7.4 9.4 11.0
4.2 6.6 6.0 9.0 10.9
3.6 5.1 5.4 8.5 8.0
2.4 3.6 3.8 6.0 6.5
2.2 3.0 3.2 4.8 6.2
1.1 1.5 1.9 2.8 3.1
42BHC ELECTRIC HEATER DATA
kW
40
— 120 V
—
1
8.3
—
16.7
2
—
25.0
3
—
4 33.3
G
5 41.7
G
6 —
G
8 —
G
10 —
G
12 —
G
15 —
G
—
16
G
20 —
G
25 —
G
30 —
G
35 —
40 —
3
—
—
—
—
8.2
8.0
4.0
• 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.
FULL LOAD AMPS
Single-Phase
208 V 240 V 277 V 208 V
4.8 4.2 3.6 2.8
9.6 8.3 7.2 5.6
14.4 12.5 10.8 8.3
19.2 16.7 14.4 11.1
24.0 20.8 18.1 13.9
28.8 25.0 21.7 16.7
38.5 33.3 28.9 22.2
47.6 41.3 35.7 27.5
— — 43.3 33.3
— — — 41.6
— — — 44.4
— — — —
— — — —
— — — —
— — — —
— — — —
Three-Phase
240 V 480 V
2.4 1.2
4.8 2.4
7.2 3.6
9.6 4.8
12.0 6.0
14.4 7.2
19.2 9.6
23.8 11.9
28.9 14.4
36.1 18.0
38.5 19.2
47.9 23.9
— 30.1
— 36.1
— 42.1
— 48.0
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