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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
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