Jacuzzi j-300 j-345 User Manual

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5. 

Add the spa water chemicals as recommended by your authorized 

Jacuzzi dealer. See Section 13.0 “Water Quality Maintenance” (page 36) 

for general guidance.

Never leave chemicals opened and accessible to anyone. Use 

chemicals according to the vendors instructions. Always store 

chemicals in a safe and/or locked location. Keep away from 

and out of reach of children.

!

6. 

Establish a stable sanitizer reading between 3.0-4.0 ppm chlorine or 2.0-

4.0 ppm bromine. To ensure healthy water conditions, always maintain 

a constant sanitizer reading within the levels recommended by the 

Association of Pool and Spa Professionals/USA printed on the inside 

cover of this manual. If sanitizer levels cannot be stabilized, perform the 

decontamination procedure steps 9-16 on pages 20-22. 

note: The “decontamination procedure” steps 9-16 should also be used 

after the spa has been “Winterized” (Section 12.7 page 35) or has been 

sitting without power for an extended period.

7. 

To warm spa water to a comfortable temperature, follow 

these steps:

The LED display on the control panel displays the 

• 

actual temperature of the spa water. Press either the 

COOLER ( ) or WARMER ( ) button once to display the “set” 

temperature for 5 seconds. If you want the water to heat to a different 

temperature, simply press COOLER ( ) or WARMER ( ) within 5 

seconds. The set temperature increases or decreases by one degree 

each time one of these buttons is pressed.

The heater will turn off when the temperature corresponding to the 

• 

thermostat setting is achieved.

The maximum water temperature setting for your spa is 104°F  

• 

(40°C) and the minimum setting is 65°F (18°C).

For North American spas connected to a 40 amp service, jets pump 

• 

#1 must be set to low speed and jets pump #2 must be turned off to 

operate the heater.

For Export spas connected to a 20 amp service, jets pump #1 must 

• 

be set to low speed and jets pump #2 must be turned off to operate 

the heater.

Setting the thermostat at maximum will not accelerate the heating 

• 

process. This will only result in a higher ultimate temperature.

The heater operates until the water reaches the programmed “set 

• 

temperature”, then turns off. The heater will reactivate after the 

water cools to approximately 1.5° below the set temperature.