Jandy LJ Installation And Operation Manual

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Page 3013. Subtract the first temperature reading (coldwater) from the second temperature reading(heated water). The difference between the tworeadings is the temperature rise. The tempera-ture rise should be within the range shown inTable 7.c. Turn off the power to the filter pump at thecircuit breaker.d. Remove thermometer and Pete's plug.e. Replace the drain plug.f. Turn on the power to the filter pump at thecircuit breaker.g. Return the pool temperature control to thedesired temperature. Repeatedly depress theMODE key until the indicator at the top ofthe display shows 'POOL SET'. Press theENTER key. Then use the UP and DOWNkeys to set the heater to the desiredtemperature. Press the ENTER key again.7.8 Adjusting the Manual Bypass ValveAfter the manual bypass valve is installed, usethe following procedures to adjust the bypass valve:1. Make sure the pool filter is clean.2. If the filter pump is on, turn it off by pressing thePUMP key and allow up to five minutes for thepump to shut down.3. Turn off the power supply to the heater at thecircuit breaker panel.4. Remove the drain plug located on the inlet/outletheader of the heater and replace it with a Pete'splug (see Figure 15).5. Insert a pocket thermometer (see Figure 15)through the Pete's plug into the header.6. Turn the circuit breaker on to supply the heaterwith power.7. Close manual bypass valve.8. Set the controller to 'OFF' by repeatedly depress-ing the SELECT key until the display shows thatthe heater is 'OFF'.9. Repeat steps 8 through 13 of the temperaturerise test (see Section 7.7).10. If the temperature rise is below the minimumstated in Table 7, open the manual bypass valveuntil temperature rise climbs between the min.and max. range for your size heater. If theminimum temperature rise stated in Table 7cannot be reached with the manual bypass fullyopen, then the gas supply volume is too low.14. If the temperature rise is below the minimumrange indicated, two possibilities arise:a. The supply gas volume is too low.b. The system's water flow exceeds 125 GPM(475 LPM), and requires a manual bypassvalve for proper operation. Install a manualbypass (see Figure 7) and proceedto Section 7.8.15. If the temperature rise is above the maximum,there is not enough water flowing through theheater. Check for clogging in the water filter orrestriction in the water pipes.CAUTIONOperating the heater with the temperature riseabove maximum or below the minimum candamage the heater and may void the warranty.ATTENTIONOpérer le chauffe-piscine au-dessus du niveaude température maximale ou sous le niveau detempérature minimale recommandée, peutendommager le chauffe-piscine et ainsi annulerla garantie.16. If the temperature rise is within the correctrange, complete the procedure as follows:a. Set the controller to 'OFF' by repeatedlydepressing the SELECT key until thedisplay shows that the heater is 'OFF'.b. Turn the filter pump off by pressing thePUMP key and allow up to five minutes forthe pump to shut down.Minimum Minimum MaximumSize GPM (LPM) °F (°C) °F (°C)125 20 (76) 27 (15) 36 (20)175 20 (76) 33 (19) 42 (24)250 25 (95) 33 (19) 42 (24)325 30 (114) 28 (16) 38 (21)400 30 (114) 30 (17) 39 (22)Table 7. Temperature Rise and Minimum Flow Rates