Hubbell ST - Manual (Page 12)

12
OPTIONS
The following optional features may be included in your water heater. Reference the drawing
specific to your heater for further details.
Single Solenoid Safety System
A single solenoid safety system closes the steam supply to the control valve should the temperature
in the tank reach the high limit set point. This option requires 120-volt, 5-amp electrical service.
Double Solenoid Safety System
A double solenoid safety system dumps over heated water in the storage tank to drain in addition to
closing the steam supply to the control valve. This option requires 120-volt, 5-amp electrical service.
Anticipator Control System
The anticipator control system forces incoming cold water over the control valve sensing bulb in
order to begin heating water immediately.
Skid Mounting
Optionally, the unit may be mounted on heavy duty all welded I-beams.
Circulating Pump Package
An intra-tank circulation pump package with On/Off switch to continuously circulate water within the
tank and thereby reduce stratification may be installed. An all bronze circulator pump.
Dial Temperature and Pressure Gauge
A combination temperature (70° - 250° F) and pressure (0 – 200 psi) gauge with 2½-inch dial may be
factory installed in the tank.