CXI650NN - Heating Jandy - Free user manual and instructions
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| Product Type | Gas Pool Heater |
| Model | CXI650NN |
| Brand | Jandy |
| BTU Output | 650,000 BTU/h |
| Fuel Type | Natural Gas (convertible to Propane) |
| Dimensions (H x W x D) | 34.5 in x 34.5 in x 42.5 in |
| Weight | 240 lbs (108.9 kg) |
| Power Supply | 120 V, 60 Hz, 5 A |
| Ignition | Electronic (direct spark) |
| Temperature Control | Digital thermostat with LCD display |
| Heat Exchanger | Cupro-Nickel (corrosion resistant) |
| Water Flow | Minimum 30 GPM, maximum 120 GPM |
| Pressure Switch | Integrated for low water flow protection |
| Thermal Cutoff | Overheat protection (ECO) |
| Venting | Power vented (PVC or stainless steel) |
| Installation | Outdoor or indoor with proper ventilation |
| Efficiency | Up to 85% thermal efficiency |
| Warranty | Limited lifetime on heat exchanger, 5 years on parts |
| Maintenance | Clean filter basket and inspect burner annually |
| Safety Certifications | ANSI Z21.56, CSA 4.96 |
Frequently Asked Questions - CXI650NN Jandy
What type of gas does the Jandy CXI650NN use?
The Jandy CXI650NN is factory set for natural gas, but can be converted to propane using a conversion kit (sold separately).
How do I light the pool heater?
The heater features an electronic direct spark ignition. Simply set the thermostat to the desired temperature and the heater will ignite automatically when there is a call for heat. Ensure the gas valve and power are on.
What is the minimum water flow required?
The minimum water flow is 30 gallons per minute (GPM). If flow drops below this, the pressure switch will shut off the heater to prevent damage.
How often should I clean the filter?
You should clean the filter basket at least once a month during heavy use, or as needed. Clogged filters reduce water flow and can cause the heater to cycle off.
What does the error code 'HL' mean?
'HL' indicates a high limit switch activation (overheating). This can be caused by insufficient water flow, a dirty filter, or obstruction in the heat exchanger. Check and reset the switch after correcting the issue.
Can I install this heater indoors?
Yes, but you must provide proper combustion and ventilation air as per local codes. The heater is power vented, so it can be installed with PVC or stainless steel vent pipes.
What is the efficiency rating of the CXI650NN?
The heater has a thermal efficiency of up to 85%, meaning 85% of the gas energy is transferred to the pool water, while the rest is lost in combustion.
How do I winterize the heater?
To winterize, drain all water from the heat exchanger and remove the drain plugs. Blow out any remaining water with compressed air. Disconnect power and gas, and cover the heater.
The heater won't stay lit. What should I check?
Check for gas supply issues (low pressure), clogged filter, faulty thermistor, or air in the gas line. Also verify the pressure switch is functioning and not stuck.
What is the warranty coverage?
Jandy offers a limited lifetime warranty on the cupro-nickel heat exchanger and 5 years on all other parts. Labor coverage may vary by installer.
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USER MANUAL CXI650NN Jandy
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Product information
Brand : Jandy
Model : CXI650NN
Category : Heating