1. Introduction and Overview
This manual provides essential information for the safe and efficient operation of your Marey GA24CSALP Tankless Water Heater. This indoor unit is designed to provide continuous hot water for whole-house applications, offering a maximum flow rate of 7.5 Gallons Per Minute (GPM) and a heat output of 170,000 British Thermal Units (BTU) per hour. It features an LED touch screen for user control and a high-quality pure copper heat exchanger for efficient heat transfer and corrosion resistance. The unit is CSA certified, ensuring compliance with rigorous safety and performance standards.
Image 1.1: Front view of the Marey GA24CSALP Tankless Water Heater, showing the white casing and integrated LED display.
2. Safety Information
Read all instructions thoroughly before installation and operation. Failure to follow these instructions could result in property damage, personal injury, or death.
- Professional Installation: Installation of this appliance must be performed by a qualified and licensed professional in accordance with all local and national codes and regulations.
- Gas Type: This unit is designed for Liquid Propane (LP) gas only. Do not attempt to use with natural gas or any other fuel type.
- Ventilation: Ensure proper ventilation as specified in the installation instructions. Inadequate ventilation can lead to carbon monoxide poisoning.
- Elevation Restrictions: Not recommended for elevations above 2,000 feet (approximately 610 meters) due to potential performance issues.
- Overheat Protection: The unit includes multiple security layers, such as overheat protection, flame failure protection, and anti-freezing features. However, these are safety measures and do not replace proper installation and maintenance.
- Water Quality: The NSF certification ensures safe and clean water for your needs.
3. Product Features
- Efficient Performance: 170,000 BTU/hr capacity for high efficiency and durability.
- Smart Design: User-friendly LED touch screen for dynamic power adjustment.
- Endless Hot Water: Provides continuous hot water for up to 3-4 simultaneous use points.
- Certified Quality: CSA certified for safety, quality, and durability in the USA and Canada.
- Safety Features: Includes overheat, flame failure, and anti-freezing protection.
- Space-Saving: Compact wall-mounted design frees up storage space.
- Easy Venting: Standard 3-inch size exhaust venting simplifies installation.
- Copper Heat Exchanger: High-quality 99.95% pure copper heat exchanger for superior heat transfer and corrosion resistance, NSF certified.
Image 3.1: Detail of the LED touch screen, showing temperature display and control buttons.
Image 3.2: Illustration of the internal copper heat exchanger, highlighting its material and design for efficient heat transfer.
4. Setup and Installation
Installation of the Marey GA24CSALP Tankless Water Heater requires adherence to specific guidelines to ensure safe and optimal performance. It is imperative that installation is carried out by a certified professional.
4.1 Pre-Installation Checks
- Verify that the installation location is indoors and provides adequate space for the unit and required clearances.
- Confirm that the gas supply is Liquid Propane (LP) and that the pressure is within the specified range for the appliance.
- Ensure that the water supply lines are correctly sized and capable of delivering the required flow rate.
- Confirm that the elevation of the installation site is below 2,000 feet.
4.2 Mounting the Unit
The unit is designed for wall mounting. Securely fasten the heater to a sturdy wall structure using appropriate mounting hardware. Refer to the detailed installation diagram for precise measurements and mounting points.
Image 4.1: Back view of the Marey GA24CSALP, illustrating the mounting brackets and connection points.
4.3 Gas and Water Connections
- Connect the Liquid Propane gas line to the unit's gas inlet, ensuring all connections are sealed and leak-free.
- Connect the cold water inlet and hot water outlet lines. It is recommended to install isolation valves for future maintenance.
4.4 Venting
Install a 3-inch exhaust venting system according to local codes and manufacturer instructions. Proper venting is critical for safety and performance.
5. Operating Instructions
The Marey GA24CSALP Tankless Water Heater is designed for user-friendly operation via its LED touch screen.
5.1 Initial Startup
- Ensure all gas and water connections are secure and leak-free.
- Open the cold water supply valve to the unit.
- Purge air from the water lines by opening a hot water faucet in your home until water flows steadily.
- Open the gas supply valve to the unit.
- Plug the unit into a grounded electrical outlet. The LED display should illuminate.
5.2 Temperature Adjustment
Use the up and down arrows on the LED touch screen to set your desired hot water temperature. The maximum temperature setting is 149°F (65°C).
5.3 Flow Activation
The unit is flow-activated. Hot water will begin to flow once a hot water faucet is opened and the minimum flow rate is met. The heater will modulate its output based on demand to maintain the set temperature.
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of your tankless water heater. It is recommended to have a qualified professional perform annual inspections and maintenance.
- Flushing: Periodically flush the unit to remove mineral buildup, especially in areas with hard water. Refer to the detailed flushing procedure in the complete manual.
- Ventilation System Check: Inspect the exhaust venting system for any obstructions, leaks, or damage. Ensure proper airflow.
- Leak Detection: Regularly check all water and gas connections for any signs of leaks.
- Anti-Freezing: During cold weather, ensure the anti-freezing features are active and consider additional measures if the unit is installed in an unheated space.
7. Troubleshooting
This section addresses common issues you might encounter. For complex problems or if you are unsure, contact a qualified service technician.
7.1 Common Error Codes
- E1 Error: Often indicates ignition failure or gas supply issues. Check gas supply, ensure gas valve is open, and verify proper gas pressure.
- E8 Error: Typically points to exhaust vent restriction or combustion issues. Inspect the exhaust pipe for blockages or improper installation. Ensure adequate air intake.
7.2 No Hot Water / Inconsistent Temperature
- Check Gas Supply: Ensure the gas valve is fully open and there is sufficient gas pressure.
- Check Water Flow: Verify that the minimum flow rate is met. Low water pressure can prevent the unit from activating or maintaining temperature.
- Power Supply: Ensure the unit is properly plugged in and receiving power.
- Temperature Setting: Confirm the desired temperature is set correctly on the LED display.
If troubleshooting steps do not resolve the issue, contact Marey customer support or a professional technician.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | MAREY |
| Model Number | GA24CSALP |
| Product Dimensions (W x H) | 17.1" x 26.2" |
| Fuel Type | Liquid Propane (LP) |
| Maximum Flow Rate | 7.5 Gallons Per Minute (GPM) |
| Heat Output | 170,000 British Thermal Units (BTU) |
| Maximum Temperature | 149 Degrees Fahrenheit (65°C) |
| Voltage | 120 Volts |
| Wattage | 100 watts |
| Mounting Type | Wall |
| Certification | CSA |
| Item Weight | 40.8 pounds |
| UPC | 764177000941 |
Image 8.1: Product dimensions of the Marey GA24CSALP Tankless Water Heater.
9. Warranty and Support
9.1 Warranty Information
The Marey GA24CSALP Tankless Water Heater comes with a 5-year limited warranty on parts. This warranty covers manufacturing defects in materials and workmanship under normal use and service. It does not cover labor costs associated with repair or replacement.
9.2 Customer Support
For technical assistance, warranty claims, or further inquiries, please visit the official Marey website or contact their customer service department. Ensure you have your model number (GA24CSALP) and proof of purchase available when contacting support.
