Samsung AC BNZDCH Series - Page 25

25
English
Installation
Power supply connections
If the air handler has been installed prior to installing the electric heaters or if an older unit is being replaced, the supply
power wires must be checked to make sure the wires are the proper sizes to handle the current load for the heaters. Refer
to table below for correct wire size. If the supply power wire size is incorrect, new wires will need to be installed. Follow the
instructions “Power supply wiring” on page 20 of these instructions for proper installation.
ELECTRICAL DATA
Indoor Unit
Model
Electric Heater Data
Minimum Circuit
Ampacity (MCA)
Maximum Overcurrent
Protection (MOCP)
Minimum Wire Size (AWG)
Short-Circuit
Current Rating
Circuit

kW
(208V)
kW
(230V)
Amps
208V
Amps
208V
Amps
230V
Amps
230V
208V 208V 230V 230V
208V
(3,4)
208V
(3,4)
230V
(3,4)
230V
(3,4)
Circuit 1 Circuit 2 
167°F
(75°C)
/
194°F
(90°C)
140°F
(60°C)
167°F
(75°C)
/
194°F
(90°C)
140°F
(60°C)
kA rms
symmetrical
V
maximum
Circuit
1
Circuit
2
Circuit
1
Circuit
2
Circuit
1
Circuit
2
Circuit
1
Circuit
2
Circuit
1
Circuit
2
Circuit
1
Circuit
2
SMALL CABINET-NOMINAL1.0, 1.5 & 2.0 TONS (0 To 5 Kw)
AC012BNZDCH 1 2.25 2.76 10.83 - 11.98 - 15.43 - 16.68 - 20.0 - 20.0 - #12 #12 - - N/A N/A
AC018BNZDCH
1 2.25 2.76 10.83 - 11.98 - 15.80 - 16.93 - 20.0 - 20.0 - #12 #12 - - N/A N/A
1 3.76 4.59 18.06 - 19.97 - 24.83 - 26.91 - 30.0 - 30.0 - #10 #10 - - N/A N/A
AC024BNZDCH
1 2.25 2.76 10.83 - 11.98 - 16.70 - 17.71 - 20.0 - 20.0 - #12 #12 - - N/A N/A
1 3.76 4.59 18.06 - 19.97 - 25.73 - 27.70 - 30.0 - 30.0 - #10 #10 - - N/A N/A
MEDIUM CABINET-NOMINAL 2.5, 3.0 TONS (0 To 10 Kw)
AC030BNZDCH
1 3.75 4.59 18.03 - 19.97 - 26.30 - 28.22 - 30.0 - 30.0 - #10 #10 - - N/A N/A
1
7. 5 0 9.18 36.06 - 39.93 - 48.83 - 53.17 - 50.0 - 60.0 - #6 #6 - - N/A N/A
AC036BNZDCH
1 3.76 4.59 18.06 - 19.97 - 27.99 - 29.65 - 30.0 - 30.0 - #10 #10 - - N/A N/A
1 7. 5 1 9.18 36.11 - 39.93 - 50.56 - 54.61 - 60.0 - 60.0 - #4 #4 - - N/A N/A
LARGE CABINET-NOMINAL 4.0, 4.5, 5.0, 6.0 TONS (0 To 20 Kw)
AC042BNZDCH
1 3.76 4.59 18.06 - 19.97 - 27.47 - 29.39 - 30.0 - 30.0 - #10 #10 - - N/A N/A
1
7. 5 1 9.18 36.11 - 39.93 - 50.04 - 54.35 - 60.0 - 60.0 - #4 #4 - - N/A N/A
AC048BNZDCH
1 3.76 4.59 18.06 - 19.97 - 28.74 - 30.30 - 30.0 - 35.0 - #10 #6 - - N/A N/A
1
7. 5 1 9.18 36.11 - 39.93 - 51.31 - 55.26 - 60.0 - 60.0 - #4 #4 - - N/A N/A
2
11.27 13.78 18.06 36.11 19.97 39.93 22.57 51.31 24.96 55.26 30.0 60.0 30.0 60.0 #10 #4 #10 #4 5 240
1. Rated Motor Amps (at DOE External Static Rating Point)
2. Fuse or HACR Breaker
3. Maximum Overcurrent Device, Overcurrent Protection Installed On Breaker Models Are Sized Per MCA
 To prevent damage, carefully insert the electric heating assembly through the rectangular opening in the front of the
discharge opening so the heat element support rod is seated into the hole on the back side of the discharge opening.
 After installing the electric heater, a one inch clearance must be maintained on all sides of the supply air duct and/or
plenum for a minimum of thirty six inches from the air handler discharge opening.
DB68-11271A-02_IM_CAC Universal AHU Indoor_AA_EN_.indd 25 2022-09-15 오전 9:53:20