American Standard 3052OD.0 Serie Instructions D'installation Et Manuel Du Propriétaire page 17

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WHIRLPOOL IN-LINE HEATER
All whirlpool systems are deigned with an In-Line Heater Blank. The threads and union set on the
heater blank and heaters are specifically designed for our system. All other heaters and heater blanks
will not interchanges with our system.
The heaters are equipped with a preset pressure switch which will not allow the heater to turn on if
the pump is not running with water flowing through the whirlpool system. The heater includes an
exclusive High Limit Switch. This safety circuit will not false trip from the hot tap water. It will
turn off the heater is the thermostat fails. If your whirlpool is equipped with adjustable jets, or other
flow control systems, the pre-set pressure switch may not activate the heater. To assure proper heater
operation, all jets may need to fully open with the pump operating at or near maximum flow.
INSTALLATION OF THE IN-LINE HEATER
• Verify there is a dedicated 120 volt, 15 Amp Circuit with a GFCI outlet available.
• Located the Ready Heater Fitting on the walk-in bathtub.
• Loosen the union nuts and remove the Heater Ready Fitting.
• Verify the heater and union fitting threads are the same.
• Placed the ribbed side of the gasket to the union fitting.
• Insert the heater and slowly hand tighten the union nuts to a smug fit to insure proper alignment.
• Once the heater alignment is verified, give a 1/4 turn to each union nut to insure a good seal.
• Fill the tub with water and check for water leaks with and without the whirlpool pump running.
INLINE HEATER INSTALLATION
Union fitting
Heater blank
Motor
Heater
Rubber gasket
17
OWNER'S MANUAL
To dedicated
120V, 15AMP circuit
Align rubber gasket
ring with groove on
union fitting
754818-100 Rev. A

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