/ Installation /
Control Panel
Caution
The control panel is suitable for outdoor mounting, and may be mounted on the tower, but not inside the tower. Wire the heaters to the panel. Wire the panel to the branch circuit supplying power to the heater.
The field supplied branch circuit disconnect switch and the branch circuit protective device (fusing or circuit breaker) shall be sized in accordance with the NEC/CEC rules for actual load. The total heater load can be calculated as shown below.
If the heater control panel is furnished with an optional disconnect, in- stallation of the panel in relationship to the heater element shall be in accordance with the NEC/CEC rules.
The main incoming conduit hub and the main power termination points are sized for total nameplate KW and voltage. The actual load for a particular installation may be less. Either compute the actual load on the heater control panel to determine the sum total KW of all the heaters connected to it or use the nameplate rating to determine the wire size required. To calculate amp draw for a particular installation use the following formulas:
KW x 1000 = Amperage for Single Phase Applications
| Voltage |
|
|
|
|
| or |
| KW x 1000 | = Amperage for Three Phase Applications | |
1.7312 x Voltage |
| ||
Should water be drained, either intentionally or accidentally, from the basin, the basin heater MUST be checked manually to insure the power source to the heating element is OFF. Although equipped with a low liquid level sensor probe, contaminants on or around the probe may cause false readings allowing the element to remain energized under low or no water conditions. Do not
IF THE UNIT IS ENERGIZED WHILE THE SENSOR PROBE IS NOT FULLY SUBMERGED IN WATER, COMBUSTION/FIRE MAY RESULT, WHICH COULD DAMAGE OR DESTROY THE TOWER AND MAY CAUSE DAMAGE TO PERSONS OR PROPERTY NEARBY.
6
