Nordic Nordic Hot Tubs, Instruction Manual

13 

If your Hot Tub is equipped with the Brett BL-60 controls, you can check the filtration 
duration time by pushing the program button and making sure at least 2 LED's on the 
bargraph display are illuminated.  Each LED represents 2 hours of filtration.  Press the 
UP or DOWN button to increase or decrease the filtration duration time, then press the 
program button again to set the duration time.  
 
If your Hot Tub is equipped with the Balboa Controls, press the UP or DOWN arrow.  
While the temperature is flashing, press the JET button.  The LED will read “

F4”

.  If you 

would like to increase or decrease the filtration duration, press the UP or DOWN arrow to 
the desired time, then press the JET button again to set the duration time.  The choices 
are: 

F2

 (2 hours), 

F4

 (4 hours), 

F6

 (6 hours), and 

FC

 (continuous filtration).  For 

example, the choice of 

F4

 will filter for 4 hours, twice a day.   

NOTE:  Your Hot Tub should filter for a minimum of 4 hours, twice a day for 
proper filtration.  If power is lost, your controls will reset back to the factory 
defaults. 

ADD START UP CHEMICALS 
 

On hand you should have an adequate supply of chemicals for your Hot Tub.  You should 
familiarize yourself with the necessary types and amounts of chemicals to maintain your 
water at clean and healthy levels.  Your dealer stocks the necessary chemicals and is a 
good source of information on chemicals and procedures. 
 

NOTE:  The importance of chemical balance in the Hot Tub can not be  
 

  over-emphasized. 

 
pH Balance

pH is a measure of water acidity.  On a scale of 0 to 14, 7.6 is the ideal point of balance.  
A measurement below 7.6 indicates that your water is more acidic.  

This water condition 

results in corrosion of the equipment's metal components.

  A measurement above 7.6 

indicates that your water is more alkaline.  

This water condition causes calcium 

deposits and scaling in the equipment and Hot Tub.  Both conditions are 
detrimental and can cause damage. 

 
NOTE:  Calcium deposits can also cause a restriction of air through your jets.  
Using “Spa Defender” from the initial use, will greatly reduce the chances of this 
occurring.  
 
 
Chlorine 

Chlorine must be used to remove bacteria and other organic matter from the water.  Little 
or no chlorine causes water to turn green and unhealthy.  Too much chlorine causes water 
to smell pungent, irritates the eyes and skin, and can cause damage to the heater tube on