Noritz NR50ODLP Outdoor Tankless Water Heater User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Noritz NR50ODLP Outdoor Tankless Water Heater. This unit is designed to provide continuous hot water for outdoor applications. Please read this manual thoroughly before installation or operation.

Front view of the Noritz NR50ODLP Outdoor Tankless Water Heater, showing its compact, rectangular design with a white casing, top exhaust vent, and bottom connections for hot water, cold water, and gas.

Figure 1: Noritz NR50ODLP Outdoor Tankless Water Heater. This image displays the front of the tankless water heater, highlighting its compact form factor suitable for outdoor installation. Visible features include the exhaust vent at the top and the water and gas connections at the bottom.

2. Safety Information

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.

Ensure proper ventilation as specified in local codes and this manual.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
This appliance must be installed by a qualified professional in accordance with all local codes and regulations.
Always turn off the gas supply and electrical power to the unit before performing any service or maintenance.
Protect the unit from freezing temperatures, especially in outdoor installations.

3. Setup and Installation

The Noritz NR50ODLP is designed for outdoor installation. Proper setup is crucial for safe and efficient operation.

3.1 Pre-Installation Requirements

Location: Select an outdoor location that is protected from direct impact and allows for proper clearances.
Gas Supply: Ensure adequate liquid propane (LP) gas supply pressure and line sizing for the unit's maximum Btuh rating (120,000 Btuh).
Water Supply: Connect to cold water inlet and hot water outlet lines. Ensure proper water pressure.
Electrical Supply: The unit requires a 120 Volt electrical connection.
Valve Kit: An IK-WV-200-1-XX-LF valve kit is required for installation and is sold separately. This kit is available with threaded and sweated end connections.
Pipe Cover: A PC-1S pipe cover is a common companion item for aesthetic and protective purposes.

3.2 Mounting the Unit

Mount the unit securely to a vertical surface using appropriate fasteners. Ensure the unit is level. Refer to the detailed installation guide provided with the product for specific mounting instructions and dimensions (14"W x 25"H).

3.3 Connecting Utilities

Connect the cold water inlet to the designated port.
Connect the hot water outlet to the designated port.
Connect the liquid propane gas line to the gas inlet.
Connect the electrical supply to the unit's power terminal.
Verify all connections are secure and leak-free before proceeding.

4. Operating Instructions

The Noritz NR50ODLP tankless water heater operates automatically when hot water is demanded.

4.1 Initial Startup

Ensure all water and gas connections are properly made and checked for leaks.
Open the main water supply valve to the unit.
Purge air from the water lines by opening a hot water faucet in your home until water flows smoothly.
Turn on the gas supply to the unit.
Connect the unit to the electrical power supply.
The unit will perform a self-check. Once complete, it is ready for operation.

4.2 Normal Operation

To obtain hot water, simply open any hot water faucet. The unit will detect water flow and automatically ignite to heat the water.
The unit will continue to provide hot water as long as there is sufficient water flow and gas supply.
To stop hot water flow, close the faucet. The unit will automatically shut down.
The maximum flow rate is 5 Gallons Per Minute.

4.3 Temperature Adjustment

Refer to the unit's control panel or the full user manual for instructions on adjusting the desired hot water temperature.

5. Maintenance

Regular maintenance ensures the longevity and efficiency of your tankless water heater.

Annual Inspection: It is recommended to have a qualified technician inspect the unit annually.
Descaling: Depending on water hardness, the unit may require periodic descaling to remove mineral buildup in the heat exchanger. This process typically involves circulating a descaling solution through the unit.
Ventilation Check: Ensure the exhaust vent is clear of obstructions.
Freeze Protection: For outdoor units, ensure proper freeze protection measures are in place, especially in colder climates.
Cleaning: Keep the exterior of the unit clean and free of debris.

6. Troubleshooting

This section addresses common issues you might encounter. For complex problems, contact a qualified service technician.

Problem	Possible Cause	Solution
No hot water	No gas supply, no water flow, power outage, unit error code.	Check gas valve, open hot water faucet, check circuit breaker, refer to error codes in full manual.
Inconsistent hot water temperature	Low water flow, mineral buildup, fluctuating water pressure.	Ensure adequate flow, consider descaling, check water pressure regulator.
Unit not igniting	No gas, ignition failure, low water flow.	Verify gas supply, check for error codes, ensure minimum flow rate is met.
Water heater froze and burst	Inadequate freeze protection in cold weather.	Ensure proper insulation and freeze protection measures are active during freezing temperatures. This is a critical issue requiring professional repair or replacement.

7. Specifications

Brand: Noritz
Model: NR501-OD-LP
Product Dimensions: 14"W x 25"H
Item Weight: 33 pounds
Color: Liquid Propane (refers to fuel type, not unit color)
Voltage: 120 Volts
Maximum Flow Rate: 5 Gallons Per Minute
Maximum Btuh: 120,000 Btuh
Efficiency: High Efficiency
Mounting Type: Outdoor
Fuel Type: Liquid Propane
Certification: Energy Star
UPC: 817000012984

8. Warranty and Support

8.1 Warranty Information

The Noritz NR50ODLP Tankless Water Heater comes with the following warranty:

Heat Exchanger: 12 Years
Parts: 5 Years
Labor: 1 Year

Please retain your proof of purchase for warranty claims. Warranty terms and conditions may vary; refer to the official Noritz warranty document included with your product for complete details.

8.2 Customer Support

For technical assistance, troubleshooting beyond this manual, or warranty service, please contact Noritz customer support.

Noritz Official Website: www.noritz.com
Customer Service: Refer to the Noritz website for current contact information (phone numbers, email).

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Noritz NR501-OD-LP