User Manual

8
STANDARD PRESSURE
REDUCING VALVE
A pressure reducing valve with built-in bypass is supplied with the unit. This valve is shipped
separately for in-line installation. The standard PRV has internal ¾” female
NPT threading and is adjustable from 10psi to 70 psi and is preset to 25psi. The set
screw located at the top of the diaphragm adjusts the pressure, turn clockwise to
increase the pressure and counter-clockwise to decrease the pressure. Pressure
reducing valves for the J3 and J4 models are optional.
OPTIONAL EQUIPMENT (not available on J4 Models)
Slide Brackets
Available for the J6 Model only, these brackets allow for mounting the booster heater under a
counter. See slide bracket diagram on page 9 for details.
Brass Pressure Reducing Valve
The optional brass pressure reducing valve with built-in bypass is shipped separately for
in-line installation. The inlet connection is supplied with a ¾” union by sweat connection.
The outlet is ¾” female NPT. The ¾” NPT valve is adjustable from 25psi-75psi (approx.
17psi to 67psi including pressure drop through the valve). The brass PRV is preset to 50psi
and must be adjusted to 25psi. The set screw located at the top of the diaphragm adjusts the
pressure, turn clockwise to increase the pressure and counter-clockwise to decrease the
pressure. Pressure reducing valves for the J3 and J4 models are optional.
Dielectric Unions
Dielectric unions are provided for the inlet and outlet nipples to isolate stray ground currents
to reduce the possibility of galvanic corrosion. (Optional on the J3 and J4 Models).
Shock Absorber
The optional shock absorber can be installed between the booster and the dishwasher
to reduce the harmful pressures resulting from quick closing dishwasher solenoid valves.
Legs
In lieu of the standard black plastic legs,
o
ptional adjustable legs are available in
stainless steel, die-cast nickel plated, and
floor mount stainless steel. All optional legs
are adjustable height type. Floor Mount Nickel Plated Stainless Steel
Security Package
For prison and other secure facilities a tamper resistant package is available. All external screws are
spader type requiring a spader wrench for removal.
Alternate Voltage
Other voltages are available, including 277V single-phase, and 380V, 415V, and 440V three-phase.
Consult the factory for details.
Water Treatment System
The optional water treatment system provides superior mineral scale prevention and
corrosion control by feeding a special blend of scale control compounds into the warm
water stream before the heater. The in-line system includes a clear cartridge housing to
allow an operator to view the cartridge and determine when it needs replacement without
the need to open the system.
XB1 Expansion Board
An optional expansion board to the control board can be used to for additional circuit firing when
more than two circuits are required and/or as an auxiliary high or low temperature alarm/relay. On
models with three contactors the XB1 is supplied as standard.
Remote Alarm Plug Adapter
An optional plug adapter is available to provide a remote fault alarm signal
through the J4 connector on the control board. See page 12 for installation
details.