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C2N Series Tankless Heater
3
Electric Installation
WARNING Install product to rated line voltage in accordance to current local and national codes and
regulations.
WARNING All Keltech heaters must be fused in accordance with National Electric Code (NEC) for the
full load amperage listed on the nameplate rating for each heater.
WARNING Failure to properly ground the unit(s) per the National Electric Code could result in injury
or death.
A
Open enclosure door .
NOTICE! Any option that requires field wiring
must be done with 600V cable per the
schematic that was shipped with the
heater.
NOTICE! Use a 4-core cable or multi-stranded
machine tool wire from an approved
isolating 3-pole switch or circuit
breaker.
NOTICE! Make sure the electrical cable is the
correct size to carry 100% of the full
load current. See table for proper
wire sizes.
Using a hole punch, cut a hole the proper
size for conduit connection; large enough
B
for the wire size for each heater . The
connectors need to be rated NEMA4/4X
to ensure proper sealing of the enclosure .
C
Run wires through the appropriate size
conduit .
Connect wires to the system terminal
D
block or fused disconnect inside the
enclosure .
E
Connect the ground wire to the stud
provided with the "Ground" label beneath it .
6
ELECTRICAL SPECIFICATIONS FOR HEATER (3 Phase)
Model
C2N363/600D
C2N503/600D
C2N363/480D
C2N503/480D
C2N363/415D
C2N503/415D
C2N363/400D
C2N503/400D
C2N363/380D
C2N503/380D
* Based on the NEC Table 310 .15 for 75°C insulated copper wire @ 30°C
Ambient . Aluminum wire requires larger gauges .
5/3/2016
Voltage
Amps
600
600
480
480
415
415
400
400
380
380
Not all available (optional) voltages are listed in table.
Bradley • 215-1821 Rev. B; ECN 16-17-005
Installation
Min Wire
kWatts
Size
35
36
6 AWG*
49
50
4 AWG*
43
36
6 AWG*
60
50
3 AWG*
38
27
6 AWG*
52
37
4 AWG*
36
25
6 AWG*
50
35
4 AWG*
33
23
8 AWG*
47
31
4 AWG*
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