GENERAL INF
O
10 • Electric Tankless Water Heater
Four-Chamber Models (Single Phase)
For potable water heating only. Not for space heating.
NOTICE: Models sorted by
Voltage
, then by
Wattage per Element
.
Model
Recommended
Breaker Size
(Amps)
Voltage
Number of
Elements
Wattage per
Element (KW)
Current per
Breaker
(Amps)
Recommended
Wire Size
*
(AWG)
Element
Type
*4**-280-X5
70 amps each
(2 cirucits)
208
4
7
67.31
6
†
Single
*4**-180-E5
40 amps each
(2 circuits)
240
4
4.5
37.50
8
Single
*4**-220-E5
50 amps each
(2 circuits)
240
4
5.5
45.83
6
Single
*4**-240-E5
60 amps each
(2 circuits)
240
4
6
50.00
6
†
Single
*4**-280-E5
60 amps each
(2 circuits)
240
4
7
58.33
6
†
Single
*4**-320-E5
70 amps each
(2 circuits)
240
4
8
66.67
6
†
Single
*
All wiring/conductors must be rated for 90°C or greater.
† Maximum recommended wire size is #6 cu AWG.
