III. ELECTRICAL HOOK-UP
WARNING
BEFORE BEGINNING ANY WORK ON THE ELECTRICAL INSTALLATION,
BE SURE THE SWITCH AT MAIN BREAKER PANEL IS “OFF” TO AVOID
ANY DANGER OF ELECTRICAL SHOCK.
“Series-two” heaters are manufactured to the following specifications:
This unit must have its own independent circuit, using 1 SET of UL listed 2 conductor and
ground core copper wire cable of the appropriate size protected by 1 independent
correctly rated Double Pole breaker. (208, 220, 240 V, see Figures 4 and 5).
Wire entry into the unit must be made through the hole provided in the flange on the backplate.
The “live” wires should be connected to the slots in the terminal block marked L1 and L2. The
ground lead must be connected to the slot marked GND.
GROUND MUST BE BROUGHT TO THE “GROUND” AT THE CIRCUIT BREAKER PANEL.
DANGER
FAILURE TO GROUND THE SYSTEM MAY RESULT IN DEATH OR SERIOUS INJURY.
* Units rated for 240 V can operate at 220 V or 208V with reduced output.
The output will vary in accordance with the following ratios:
208 volts 220 volts 240 volts
.75 .84 1.0
output ratio
volts
MODEL TYPE OUTPUT / kW VOLTAGE / V AMPERAGE
EX 120
11.5
*240 47.9 Amps
SPECIAL
O
N
O
N
O
F
F
O
F
F
1 independent
correctly rated Double pole
breaker (240/208 Volts)
Figure 4
Figure 5
6
Circuit Breaker Panel
