Jandy Legacy Pool Heater Manual

The Jandy Legacy Pool Heater is a high-efficiency gas pool heater designed for reliable performance and easy operation. Featuring electronic ignition, digital temperature control, corrosion-resistant components, and multiple safety systems. 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. Water Connections 7. Gas Connections 8. Electrical Connections 9. Operation 10. Maintenance 11. Troubleshooting

Features at a Glance

Key components: Digital control panel, Electronic ignition system, Copper heat exchanger, Corrosion-resistant cabinet, Multiple safety controls.

Feature	Description
Digital Control Panel	Easy temperature setting and status monitoring
Electronic Ignition	Reliable startup with no standing pilot
Copper Heat Exchanger	Efficient heat transfer and corrosion resistance
Safety Controls	High limit switch, pressure switch, flame sensor
Corrosion-Resistant Cabinet	Durable outdoor construction
Multiple Gas Options	Natural gas or propane models available
Water Pressure Gauge	Monitors system pressure
Thermal Regulator	Prevents cold water shock to heat exchanger
Stack Flue Damper	Improves efficiency and prevents heat loss
Service Indicator Lights	LED status indicators for troubleshooting

Installation

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

Location: Install at least 5 feet from pool edge; ensure proper clearance for service access.
Foundation: Use concrete pad or other stable, level surface.
Ventilation: Ensure adequate airflow; maintain clearances per local codes.
Water connections: Install unions and valves for easy service.

WARNING! Installation must comply with local codes. Gas connections must be performed by qualified technician.

First-Time Setup

Complete installation checks before initial startup.

Water system: Fill pool and purge air from system; check for leaks.
Gas system: Verify gas type matches heater; check for leaks with soap solution.
Electrical: Connect to proper voltage; ensure grounding.
Initial startup: Follow lighting instructions; set desired temperature.

CAUTION! Do not operate without water flow. Ensure all safety devices are functional.

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 PVC unions standard
Gas Connections: 3/4-inch or 1-inch NPT
Electrical: 120V AC, 60Hz
Temperature Range: 65°F to 104°F (18°C to 40°C)
Dimensions: Varies by model (typically 28"W x 32"H x 16"D)
Weight: 90-150 lbs depending on model

Controls and Settings

Digital control panel with temperature display and operation indicators.

Control Panel: POWER button, Temperature up/down buttons, Pool/Spa mode selector, Service indicator lights.

Temperature Control: Set desired pool temperature using up/down buttons. Mode Selection: Switch between Pool and Spa heating modes. Diagnostic Lights: Power (green), Heater On (yellow), Service (red). Safety Lock: Prevents unauthorized temperature changes.

Water Connections

Proper water flow is critical for safe operation.

Install heater after filter and before chemical feeder.
Use unions for easy service and replacement.
Install bypass valve for flow control and service.
Ensure proper flow rate (minimum 20 GPM, maximum 120 GPM).

Tip: Install isolation valves for easy winterization and maintenance.

Gas Connections

Gas supply must meet heater requirements.

Verify gas type (natural gas or propane).
Ensure adequate gas pressure (7" WC natural gas, 11" WC propane).
Use approved gas pipe and fittings.
Install sediment trap/drip leg in gas line.
Test for leaks before operation.

WARNING! Gas connections must be performed by qualified professional. Follow all local codes.

Electrical Connections

Proper electrical connection ensures safe operation.

Connect to 120V AC, 60Hz grounded outlet.
Use weatherproof electrical connections.
Follow National Electrical Code and local requirements.
Ensure proper grounding.

CAUTION! Disconnect power before servicing. Use GFCI protection for outdoor installations.

Operation

Normal heating operation procedures.

Ensure pool pump is running and water is flowing.
Press POWER button to turn on heater.
Set desired temperature using up/down buttons.
Heater will ignite automatically when call for heat is detected.
Monitor temperature display and indicator lights.
To shut down: Press POWER button or turn off pool pump.

WARNING! Never operate without water flow. Do not bypass safety controls.

Maintenance

Regular maintenance ensures long service life.

Monthly: Check water pressure gauge; clean filter basket.
Seasonal: Inspect burners and heat exchanger; clean as needed.
Annual: Professional inspection of gas and electrical systems.
Winterization: Drain heater completely if freezing temperatures expected.

CAUTION! Turn off gas and electrical power before performing maintenance.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Heater won't start	No power/water flow	Check circuit breaker; ensure pump is running; verify water flow.
No ignition	Gas supply/ignition	Check gas valve; verify ignition system; inspect flame sensor.
Heater cycles on/off	Water flow/thermostat	Check filter; clean skimmer baskets; verify proper flow rate.
Error codes displayed	System faults	Refer to service manual for specific error code diagnosis.
Poor heating performance	Heat exchanger/flow	Clean heat exchanger; check for scale buildup; verify flow rate.

Reset: Turn power off for 30 seconds, then restart.

Service: Contact authorized Jandy service technician for complex issues.