Hubbell Electric Heater Company D - Manual (Page 7)

7
OUTER SHELL AND INSULATION
The tank is encapsulated in 2-inches of high-density fiberglass insulation. The protective shell is
constructed of galvaneel and is coated with a durable silver hammertone finish.
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 float type (316 stainless steel) 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. This type of low
water cut-off uses a 316 stainless steel
float.
Fused Low Voltage Transformer
A fused low voltage transformer may be supplied. This option
is provided only in 480-volt systems with low water cut-offs to
step down the voltage to 240-volt for safety when working with
control circuits. As an option, a transformer may be installed on
any unit to step down the voltage to 120-volts
Stainless Steel Outer Jacket
An optional stainless steel outer jacket may replace the standard
galvaneel jacket.
Optional Connections
Flanged inlet and outlet connections (150#)
Threaded inlet and outlet connections (1 ½”, 2” MNPT)
Sanitary Connections
NEMA 4 or NEMA 4X Electric Control Panel
A NEMA 4 control panel may be supplied to provide watertight construction for installation in “wet”
areas.