Carrier AIRSTREAM 42BHE, Installation, Start-Up And Service Instructions Manual, Page: 5 / 12

5
Step 7 — Make Electrical Connections —
Refer to
the unit rating plate for supply voltage, motor and heater am-
perage, and required circuit ampacities. (See Tables 2 - 4.) The
unit wiring diagram shows all factory and field wiring. Most of
the unit motors are dual voltage that are factory wired for a
specified voltage. The motors should be checked to ensure that
they are wired for the correct voltage and rotation.
Units equipped with factory-installed motor controls and
disconnect will comply with NEC requirements for disconnect,
motor controller and motor overload protection. Separate dis-
connect and motor starter are not required to comply with NEC
requirements.
All field wiring should be done in accordance with all appli-
cable local and national codes. Any factory wiring modifica-
tions without factory authorization will void all factory warran-
ties and nullify any agency listings.
The manufacturer assumes no responsibility for any dam-
age and/or injuries resulting from improperly installed or wired
components.
Install fan switches, thermostats and other accessories in
accordance with accessory manufacturer’s instructions and ap-
plicable wiring diagram.
Table 2 — 42BHE,BVE ELECTRIC HEATER DATA
AVAILABILITY
LEGEND
NOTES:
1. Stages available:
a. Single phase: 1 to 12 kW, 1 stage only
3 to 12 kW, 1 stage or 2 stage
b. Three phase: 1 to 39.9 kW, 1 stage only
4 to 39.9 kW, 1 or 2 stage
12 to 39.9 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 Amp. for 3-phase Power = (Heater kW x 1000)/
(Applied Voltage x 1.73).
Table 3 — 42BHE,BVE ELECTRIC HEATER DATA
Table 4 — MOTOR PERFORMANCE DATA (FULL
LOAD 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, 104 F ambient with reversible
rotation.
4. 5HP motors available only on size 40 units.
SERVICE SWITCHES: — The service switch is an On/Off
switch on incoming power supply to unit. Proper amperage
load must be determined before switch can be selected. The
range of the fused or non-fused service switch is 0 to 40
amps.
Amp Load =
[Motor amps + Heater amps (if required)] x 1.20.
kW
42BHE UNIT SIZE
06 08 10 12 16 20 30 40
1.0
● ●
— — — — — —
1.5
● ● ● ●
— — — —
2.0
● ● ● ●
— — — —
2.5
● ● ● ● ●
— — —
3.0
● ● ● ● ●
— — —
3.5
● ● ● ● ● ●
— —
4.0
● ● ● ● ● ●
— —
4.5
● ● ● ● ● ●
— —
5.0
● ● ● ● ● ●
— —
6.0
● ● ● ● ● ● ● ●
7.0 —
● ● ● ● ● ● ●
8.0 —
● ● ● ● ● ● ●
9.9 — —
● ● ● ● ● ●
12.0 — — —
● ● ● ● ●
14.0 — — — —
● ● ● ●
15.0 — — — —
● ● ● ●
16.0 — — — —
● ● ● ●
18.0 — — — — —
● ● ●
19.9 — — — — —
● ● ●
25.0 — — — — — —
● ●
30.0 — — — — — —
● ●
35.0 — — — — — — —
●
39.9 — — — — — — —
●
●
— Standard Offering
— — Not Offered
kW
FULL LOAD AMPS
Single-Phase Three-Phase
115 V 208 V 240 V 277 V 208 V 240 V 480 V
1.0 8.3 4.8 4.2 3.6 2.8 2.4 1.2
1.5 12.5 7.2 6.3 5.4 4.2 3.6 1.8
2.0 16.7 9.6 8.3 7.2 5.6 4.8 2.4
2.5 20.8 12.0 10.4 9.0 6.9 6.0 3.0
3.0 25.0 14.4 12.5 10.8 8.3 7.2 3.6
3.5 29.2 16.8 14.6 12.6 9.7 8.4 4.2
4.0 33.3 19.2 16.7 14.4 11.1 9.6 4.8
4.5 37.5 21.6 18.8 16.2 12.5 10.8 5.4
5.0 — 24.0 20.8 18.1 13.9 12.0 6.0
6.0 — 28.8 25.0 21.7 16.7 14.4 7.2
7.0 — 33.7 29.2 25.3 19.4 16.8 8.4
8.0 — 38.5 33.3 28.9 22.2 19.2 9.6
9.9 — — — 35.7 27.5 23.8 11.9
12.0 — — — 43.3 33.3 28.9 14.4
14.0 — — — — 38.9 33.7 16.8
15.0 — — — — 41.6 36.1 18.0
16.0 — — — — — 38.5 19.2
18.0 — — — — — — 21.7
19.9 — — — — — — 23.9
25.0 — — — — — — 30.1
30.0 — — — — — — 36.1
35.0 — — — — — — 42.1
39.9 — — — — — — 48.0
VOLTAGE
V-Ph-Hz
Nominal HP
1 /
4
1 /
3
1 /
2
3 /
4
1 1 1 /
2
2 3 5
115-1-60 5.2 6.0 8.6 13.3 14.4 — — — —
208-1-60 3.0 3.6 4.8 6.6 7.4 9.4 11.0 — —
230-1-60 2.5 3.0 4.2 5.1 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 14.0
230-3-60 — — 2.2 3.0 3.2 4.8 6.2 8.0 13.2
460-3-60 — — 1.1 1.5 1.9 2.8 3.1 4.0 6.6