Hubbell Electric Heater Company A - Manual (Page 7)

7
FUSED LOW VOLTAGE TRANSFORMER
A fused low voltage transformer is supplied with all models
rated for 480-volts. This component is used to step down the
480-volt power supply to 240-volts for safety when working
with control circuits.
ON/OFF SWITCH
An illuminated on/off switch is provided for positive verification heater status.
OPTIONS
The following optional features may be included in your water heater. Reference included drawing
specific to your heater for further details.
Low Water Cut-Off
Used as a safety device, the electronic low water cut-off is
used to detect a low water situation and disengage the
operating coils in the magnetic contactor(s). Once the
condition is remedied, the low water cut-off switch is
automatically reset.
Dial Temperature and Pressure Gauge
A combination temperature (70° - 250° F) and pressure (0 –
200 psi) gauge with 2½-inch dial may be supplied for in-
line installation (shipped loose).