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Attention: Due to the risk of electrical shock a licensed electrician experienced in spa, baptismal and
pool heaters should install this unit is strict compliance with the National Electric Code and any state or
local laws in effect which may apply. For units intended for use in other than single family dwellings a
clearly labeled emergency switch shall be provided as part of the installation. The switch shall be readily
accesible to the occupants and shall be installed at least 5 feet (1.52m) away, adjacent to, and within sight
of the unit.
The EQAS System has been completely factory wired for proper operation and requires only field
connection to the branch circuits. Field wiring, power supply conductors and branch circuit protectors
must be installed by a qualified electrician on accordance with Article 680 of the National Electric Code
ANSI/NFPA No. 70-1981 and in accordance with local codes and/or utility requirements.
Operation of the heater is controlled primarily by the thermostat; however, a built in pressure switch is
incorporated to prevent the heater from activation if there is insufficient water pressure detected in the
heater. The pump is connected to a 4-pin connector on the bottom of the control box on the heater and
can be powered on and off remotely via a pneumatic air switch on the top of the control box.
CONNECTING POWER TO HEATER: Note that the heater is supplied with preinstalled/color coded
leads to simplify installation. Connect the wires to a GFCI protected power source as follows:
208V-240V/40A Operation:
Black = Line 1
Blue = Line 2
White = Neutral
Green/Bonding Lugs = Ground
120V/20A Operation:
Black = Line 1
Blue & White Connected = Neutral
Green/Bonding Lugs = Ground
CONNECTING/BONDING PUMP TO HEATER: A cord and plug has been provided on the pump
assembly to allow easy connection to the heater control box. Connect to the receptacle on the bottom the
control box and complete this step by using the solid #8 copper bonding wire to BOND the pump to the
heater assy utilizing the bonding lug on each component.
VERIFY PROPER OPERATION:
1. Fill the tank with water above the return fitting.
2. Turn the thermostat to its lowest setting
3. Apply power to the system - The heater should not come on, if it does immediately turn the power
off to the system and do not continue until this issue is corrected - See troubleshooting section Page
#10, correct and move to next step.
4. Connect the supplied air tubing to the air switch on the top of the heater control box and the other end
to the supplied air button. Pressing this air button will activate and deactivate the pump.
5. Activate the pump by pressing the air button, the pump should activate and water should now be
flowing out of the return fitting.
6. Once all the air has been evacuated from the plumbing you can safely turn the thermostat up, the
heater indicator light should illuminate indicating power is now applied to the heater.
7. Now press the air button to de-activate the pump and assure the heater shuts off when the pump does.
If the heater does not shut off then immediately reactivate the pump then proceed to the
troubleshooting section on page #8.
Wiring
8
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