Jandy Lite2 Pool Heater Manual

The Jandy Lite2 Pool Heater is a high-efficiency gas pool heater designed for residential swimming pools. It features electronic ignition, digital temperature control, easy-to-use operation, corrosion-resistant heat exchanger, built-in freeze protection, and compatibility with various pool sizes. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to Pool System 7. Operation 8. Maintenance 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital control panel, Electronic ignition system, Corrosion-resistant copper heat exchanger, Built-in freeze protection, Temperature display, Power switch.

Feature	Description
Digital Control Panel	Easy temperature setting and monitoring
Electronic Ignition	Energy-efficient spark ignition system
Copper Heat Exchanger	Corrosion-resistant for long lifespan
Freeze Protection	Automatic operation when temperatures drop below freezing
Temperature Display	LED display showing current and set temperatures
Power Switch	Main power control for heater operation
Gas Connection	Standard natural gas or propane connection
Water Connections	Standard 2-inch plumbing connections
Pressure Switch	Safety feature to ensure proper water flow
Thermal Regulator	Maintains consistent water temperature

Installation

Unpack and inspect contents. Place on level, stable surface near pool equipment.

Gas Connection: Connect to natural gas or propane supply line using approved piping.
Water Connections: Connect to pool filtration system using 2-inch PVC piping.
Electrical Connection: Connect to proper electrical supply (120V AC).
Venting: Ensure proper venting according to local codes and manufacturer specifications.

WARNING! Installation must be performed by qualified professional. Ensure proper clearances from combustible materials.

First-Time Setup

Power on heater; follow initial setup procedure.

Check water flow: Ensure pool pump is running and water is flowing through system.
Set temperature: Use control panel to set desired pool temperature.
Test ignition: Heater should ignite automatically when temperature is below set point.
Monitor operation: Verify heater maintains temperature and shuts off when reached.

CAUTION! Do not operate without proper water flow. Ensure all connections are secure before starting.

Specifications

Heater Type: Natural gas or propane pool heater
BTU Output: Various models from 150,000 to 400,000 BTU
Efficiency: Up to 85% thermal efficiency
Water Connections: 2-inch threaded connections
Electrical: 120V AC, 60Hz
Temperature Range: 65°F to 104°F (18°C to 40°C)
Dimensions: Varies by model (typically 24"W x 30"H x 16"D)
Weight: 85-120 lbs depending on model
Warranty: Limited lifetime on heat exchanger

Controls and Settings

Access controls via digital control panel on front of unit.

Control Panel: Power button, Temperature up/down buttons, Display screen, Mode selection.

Temperature Control: Set desired pool temperature using up/down buttons. Display: Shows current water temperature and set temperature. Mode Selection: Normal operation, Economy mode, Boost mode. Safety Features: High limit switch, Pressure switch, Flame sensor, Freeze protection.

Connecting to Pool System

Connect heater to existing pool filtration system.

Turn off pool pump and heater before connecting.
Install heater after filter and before chemical feeder in plumbing line.
Use proper unions for easy disconnection if needed.
Ensure water flow direction matches arrow on heater housing.

Tip: Install isolation valves for easy maintenance and service.

Operation

Automatic operation when pool temperature drops below set point.

Power On: Turn on main power switch.
Set Temperature: Use control panel to set desired pool temperature.
Automatic Operation: Heater will ignite when pool temperature drops 2-3 degrees below set point.
Monitoring: Display shows current water temperature and heater status.
Shutdown: Heater automatically shuts off when set temperature is reached.

WARNING! Never operate heater without proper water flow. Keep area around heater clear of debris.

Maintenance

Regular maintenance ensures optimal performance and longevity.

Monthly: Check for proper water flow and clean filter basket.
Seasonally: Inspect burners and heat exchanger for debris.
Annually: Professional inspection of gas connections and safety devices.
As needed: Clean exterior surfaces and ensure venting is clear.

Care & Cleaning

Turn off power before cleaning. Use mild detergent and soft cloth for exterior cleaning.

CAUTION! Do not use high-pressure water or harsh chemicals. Keep electrical components dry.

Regulatory Information

UL listed and certified to ANSI standards for pool heaters. Complies with all applicable safety standards. Copyright © 2025 Jandy Products; trademarks of Fluidra USA. For technical support, visit www.jandy.com or contact 1-800-227-1442.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Heater won't ignite	Gas supply/ignition	Check gas valve is open; verify proper gas pressure; check ignition system.
No water flow	Pump/filter issues	Ensure pool pump is running; clean filter; check for closed valves.
Error code displayed	System fault	Refer to error code chart in manual; reset system if safe.
Poor heating performance	Flow rate/thermostat	Check water flow rate; verify thermostat setting; inspect heat exchanger.
Heater cycles on/off frequently	Water flow/thermostat	Check for proper water flow; verify thermostat calibration.

Reset: Turn power off for 30 seconds then restart.

Service: 1-800-227-1442; www.jandy.com