LX and LT Pool Heaters | Page 15 |
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13.Reinstall the adapter, with the PRV, into the plastic threaded hole and tighten it until the mark on the adapter is once again facing the same direction as the water connections on the header.
CAUTION
Do not use any pipe compound or pipe dope on the threads of the adapter or any part that comes in contact with the plastic headers.
These compounds may damage the header over a period of time.
DO NOT TIGHTEN WITH A WRENCH. Overtightening may crack the header. Route the discharge piping so that steam from the pipe does not endanger anyone near the heater. Refer to your local installation codes for more detailed information. The valve setting should be at or below the maximum working pressure of any component in the filter system. The working pressure of the LX heater is 75 psig.
2I-5. Automatic Chlorinators (Chemical Feeders)
A high concentration of chlorine (and many similar chemicals) in the pool heater can be very destructive. Heater damage caused by chemical concentration is not covered by the Waterpik Technologies Warranty. See Table 6 for guidelines on pool water chemistry.
IMPORTANT: If an automatic chlorinator is being used, equip the chlorinator with an anti- siphoning device so that chlorine will not siphon into the heater after the pump shuts off.
Wire an electric chlorinator so that it cannot operate unless the filter pump is running. If the chlorinator has an independent clock control, synchronize it with the filter clock.
Always install a chlorinator so that it introduces the chlorine downstream from the heater, and, if possible, below the level of the heater outlet fitting.
Table 6. Chemical Concentration Levels
Test | Recommended Level* |
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Free Chlorine or | 1.0 to 3.0 ppm |
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Total Bromine | 2.0 to 4.0 ppm |
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pH | 7.2 to 7.6 |
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Total Alkalinity (TA) | 100 to 150 ppm |
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Calcium Hardness (CH) | 200 to 400 ppm |
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Langelier Saturation Index (SI) | |
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Cyanuric Acid | 30 to 150 ppm |
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Total Dissolved Solids (TDS) | Less than 1500 ppm |
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Copper | 0 ppm |
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*As recommended by IPSA |
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2J. Start-up and Adjustment
2J-1. Normal Operation
The LX and LT heaters are capable of automatic operation based on a call for heat at preset temperatures and an operator selection between pool or spa settings. Additionally, the heater may be controlled by a remote unit to anticipate bather load, changes in temperature settings, or a variety of other demands that might be encountered. The heater has an internal safety system which allows operation in a variety of conditions and prevents operation when certain adverse conditions are encountered. The heater is capable of diagnosing problems within the safety controls scheme, enabling faster service and less down time in the event of a failure.
When the heater is powered, water is flowing through the heater, and the water temperature entering the heater is below the temprature control setting, the heater is ready to ignite. The combustion fan is powered and if airflow is proved adequate the igniter comes on 45 seconds into the call for heat. At 60 seconds into the call for heat, the gas valve opens and gas flows to the burners.
If ignition is unsuccessful, or if the flame fails
during normal operation, the ignition control shuts off the gas valve. It imposes a post purge and two more ignition cycles, and it shuts down the system if ignition is not achieved in three cycles.
To reset the model LX for another three cycles, press and release the mode button until the indicator on the LCD screen aligns with "OFF". Now press and release the button again until the indicator on the LCD screen aligns with the desired setting, either "POOL" or "SPA".
To reset the model LT press and release the mode button until the indicator lights for the "SPA" and "POOL" settings are off. Then press and release it again until the indicator light for the desired setting is back on.