CXI750NN - Heating Jandy - Free user manual and instructions
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| Product Type | Gas Pool Heater |
| Model | CXI750NN |
| Brand | Jandy |
| Fuel Type | Natural Gas (NG) or Liquid Propane (LP) |
| Input Power | Approximately 725,000 BTU/hr |
| Efficiency | 82% Thermal Efficiency |
| Dimensions (W x H x D) | 30.5 cm x 86.4 cm x 91.4 cm (12 in x 34 in x 36 in) |
| Weight | Approximately 113 kg (250 lbs) |
| Power Supply | 120V AC, 60 Hz, 5A |
| Water Connections | 2-inch PVC union |
| Control System | Digital electronic thermostat with remote control capability |
| Ignition | Hot Surface Ignition |
| Safety Features | Flame roll-out safety switch, high-limit thermostat, pressure switch, and backflow prevention |
| Material | Stainless steel heat exchanger and cabinet |
| Maintenance | Clean burner orifices and heat exchanger tubes regularly; check anode rod annually |
| Repairability | Spare parts available; minimal tools required for most repairs |
| Certifications | ASME, ANSI, CSA, and UL listed |
Frequently Asked Questions - CXI750NN Jandy
What type of fuel does the Jandy CXI750NN use?
The Jandy CXI750NN can be configured for natural gas (NG) or liquid propane (LP). Check the model label or manual for specific orifice kit requirements.
How do I convert the heater from natural gas to propane?
You will need to replace the gas valve orifice and adjust the regulator. Refer to the conversion kit instructions in the manual. Improper conversion can cause hazardous operation.
What is the recommended maintenance schedule?
Inspect the heat exchanger and burner annually. Clean the filter and check the anode rod every season. For heavy use, more frequent cleaning may be needed.
Why does my heater not ignite?
First check the gas supply and ensure the pressure switch is functioning. Also verify that the thermostat is set above the pool temperature. If failure persists, inspect the hot surface igniter.
Can I install this heater indoors?
No, the CXI750NN is designed for outdoor installation only. It requires adequate combustion air and proper venting. Indoor installation may lead to carbon monoxide poisoning.
What is the maximum pool size this heater can handle?
With 725,000 BTU/hr input, it can efficiently heat pools up to 20,000 gallons, depending on desired temperature rise and climate conditions.
How do I clean the heat exchanger?
Turn off power and gas. Remove the top access panel. Use a brush or vacuum to clear soot or debris from the tubes. Avoid using water unless the exchanger is completely cool.
Where is the drain plug located?
The drain plug is on the lower front of the heater near the water inlet/outlet. Refer to your manual diagram for exact location.
What error code means?
The control panel displays error codes. For example, E01 indicates ignition failure, E02 indicates overheat. See the troubleshooting table in the manual for full list.
Is the Jandy CXI750NN compatible with saltwater pools?
Yes, the stainless steel heat exchanger is resistant to saltwater corrosion, but regular maintenance is recommended. Rinse the heater after exposure to salt spray.
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USER MANUAL CXI750NN Jandy
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Product information
Brand : Jandy
Model : CXI750NN
Category : Heating