6
C2N Series Tankless Heater
Installation
5/3/2016
Bradley •
215-1821 Rev. B; ECN 16-17-005
Electric Installation
3
WARNING Failure to properly ground the unit(s) per the National Electric Code could result in injury
or death.
B
Using a hole punch, cut a hole the proper
size for conduit connection; large enough
for the wire size for each heater . The
connectors need to be rated NEMA4/4X
to ensure proper sealing of the enclosure .
A
Open enclosure door .
C
Run wires through the appropriate size
conduit .
D
Connect wires to the system terminal
block or fused disconnect inside the
enclosure .
E
Connect the ground wire to the stud
provided with the “Ground” label beneath it .
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.
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.
ELECTRICAL SPECIFICATIONS FOR HEATER (3 Phase)
Model
Voltage
Amps
kWatts
Min Wire
Size
C2N363/600D
600
35
36
6 AWG*
C2N503/600D
600
49
50
4 AWG*
C2N363/480D
480
43
36
6 AWG*
C2N503/480D
480
60
50
3 AWG*
C2N363/415D
415
38
27
6 AWG*
C2N503/415D
415
52
37
4 AWG*
C2N363/400D
400
36
25
6 AWG*
C2N503/400D
400
50
35
4 AWG*
C2N363/380D
380
33
23
8 AWG*
C2N503/380D
380
47
31
4 AWG*
* Based on the NEC Table 310 .15 for 75°C insulated copper wire @ 30°C
Ambient . Aluminum wire requires larger gauges .
WARNING Install product to rated line voltage in accordance to current local and national codes and
regulations.
Not all available (optional) voltages are listed in table.
