Installation Guide

6
Electrical Specifications by Model
MODELS
ECO 8
ECO11
ECO 18
ECO 24
ECO 27
ECO 36
ELEMENTS
1
2
2
3
3
4
VOLTAGE
240 V
240 V
240 V
240 V
240 V
240 V
MAX kW
8 kW
13 kW
18 kW
24 kW
27 kW
36 kW
kW PER ELEMENT
8 kW
6.5 kW
9 kW
8 kW
9 kW
9 KW
MAX AMPERAGE DRAW
33 AMPS
54 AMPS
75 AMPS
100 AMPS
112.5 AMPS
150 AMPS
REQUIRED BREAKERS
1 x 40 AMP
1 X 60 AMP
2 X 40 AMP
3 x 40 AMP
3 X 40 AMP
4 X 40 AMP
REQUIRED WIRE GAUGE
1 x 8 AWG
1 x 6 AWG
2 X 8 AWG
3 x 8 AWG
3 X 8 AWG
4 X 8 AWG
Wiring Diagram
Circuit Break #1 Circuit Breaker #2 Circuit Breaker #3 Circuit Breaker #4
208V Jumper Setting
When using 208V service for these units instead of 240V you must change the jumper setting to ensure proper
unit functionality. Using a 208V service will give you 75% capacity. There are two different types of control
boards: Thru Hole and Surface Mount. For assistance determining control board type, please visit
EcoSmartUS.com
Model
ECO 8
ECO 11
ECO 18
ECO 24
ECO 27
ECO 36
New Jumper Setting (Thru Hole)
8
8
5.5
5.5
5.5
7
New Jumper Setting (Surface Mount)
8
7
7
5.5
7
7
L1
BLACK
L1
RED
ECO 8 – ECO 11 requires 1
breaker and 1 set of wires
ECO 18 requires 2 sets of breakers and wires
ECO 24 – ECO 27 require 3 sets of breakers and wires
ECO 36 requires 4 sets of breakers and wires
L2
BLACK
L2
RED
L4
BLACK
L4
RED
L3
BLACK
L3
RED