Noritz 9.8 GPM 199,900 BTU Commercial Propane Outdoor Tankless Water Heater (.82 UEF)

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Noritz

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Model

NC199-OD-LP

ID

237166

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Product Features
  • Outdoor Ready: Built for permanent outdoor installation.
  • Bottom Connections: Standard bottom water and gas connections.
  • Endless Hot Water: Delivers up to 9.8 GPM on demand.
  • High Efficiency: .82 UEF helps reduce propane costs.
  • Commercial Grade: Designed for continuous commercial operation.
  • 5-Year Warranty: Commercial heat exchanger coverage.

The Noritz NC199-OD-LP 9.8 GPM 199,900 BTU Commercial Propane Outdoor Tankless Water Heater is engineered to deliver dependable, continuous hot water for demanding commercial applications including restaurants, office buildings, salons, multi-family properties, and other light commercial facilities. Unlike traditional storage tank water heaters that can run out of hot water during periods of heavy demand, the NC199-OD-LP heats water only when needed, providing an endless supply of hot water while reducing standby energy loss.

Designed exclusively for outdoor installation, the NC199-OD-LP eliminates the need for indoor venting while delivering up to 199,900 BTU of propane heating power and a maximum flow rate of 9.8 gallons per minute. Its compact wall-mounted cabinet helps save valuable indoor space while commercial-grade construction, advanced temperature controls, and multi-unit capability make it an ideal solution for new construction and replacement commercial water heating applications.

Product Features:

  • 199,900 BTU Maximum Input: Provides powerful propane heating capacity for demanding commercial hot water applications.
  • Up to 9.8 GPM Flow Rate: Supplies continuous hot water to multiple fixtures simultaneously depending on incoming water temperature and required temperature rise.
  • Commercial Non-Condensing Design: Engineered for dependable commercial operation with a Uniform Energy Factor (UEF) of 0.82.
  • Outdoor Installation: Factory-built for outdoor installation, eliminating the need for indoor vent piping while helping simplify installation.
  • Commercial Copper Heat Exchanger: Heavy-duty copper heat exchanger is designed for long-lasting commercial durability.
  • Multi-System Capability: Compatible with optional Noritz Quick Connect and System Controller accessories for larger commercial installations.
  • Wide Temperature Adjustment: Adjustable temperature settings from 100°F to 185°F support a variety of commercial hot water applications.
  • Fully Modulating Burner: Automatically adjusts firing rate between approximately 16,000 and 199,900 BTU for consistent temperatures and improved efficiency.
  • Electronic Ignition: Eliminates the need for a standing pilot while improving efficiency and reliability.
  • Built-In Safety Features: Includes freeze protection, flame monitoring, overheat prevention, lightning protection, and self-diagnostic monitoring.

What Is an Isolation Valve Kit?

An isolation valve kit is recommended for tankless water heater installations. These valves allow the unit to be isolated from the plumbing system for flushing, descaling, maintenance, and servicing without shutting off water to the rest of the building.

Routine flushing helps remove mineral buildup inside the heat exchanger, maintaining efficiency and extending equipment life, especially in areas with hard water.

Short vs. Long Isolation Valve Kit

Only one isolation valve kit is required for the NC199-OD-LP depending on your installation layout.

  • IK-WV-200-5-TH-S Short Isolation Valve Kit: Ideal where installation space is limited.
  • IK-WV-200-5-TH-L Long Isolation Valve Kit: Provides additional clearance for easier servicing.

Both kits include 3/4" threaded isolation valves and a lead-free pressure relief valve.

Understanding Tankless Water Heater Sizing

Tankless water heaters are sized using flow rate (GPM) and temperature rise rather than tank capacity. Always size using your area's winter groundwater temperature since colder incoming water requires more heating.

For example, if your desired hot water temperature is 120°F and incoming groundwater is 50°F, the required temperature rise is:

120°F − 50°F = 70°F Temperature Rise

Consult the manufacturer's flow rate chart to determine expected hot water output at your required temperature rise.

Warranty

This product includes Noritz's commercial limited warranty featuring a 5-year heat exchanger warranty, 5-year parts warranty, and 1-year labor warranty for qualifying commercial installations. Always verify propane fuel supply, installation location, gas pressure, water quality, local plumbing codes, and required accessories before installation.


Commercial Outdoor Tankless Performance Powered by Propane

The Noritz NC199-OD-LP is a commercial-grade outdoor tankless water heater engineered to deliver dependable, high-volume hot water for businesses and commercial facilities where propane is the preferred fuel source. Producing up to 9.8 gallons per minute and featuring a maximum input of 199,900 BTU, this unit is designed to provide continuous hot water for demanding applications without the limitations of traditional storage tanks.

Purpose-built for outdoor installation, the NC199-OD-LP eliminates the need for indoor venting while helping preserve valuable mechanical room space. Its compact wall-mounted design allows for flexible exterior placement, making it an excellent solution for restaurants, offices, retail establishments, multi-unit properties, and other commercial environments where installation flexibility is essential.

The tankless design heats water only when demand is present, providing a continuous supply of hot water while reducing standby heat losses associated with conventional tank systems. With a Uniform Energy Factor (UEF) of 0.82, the NC199-OD-LP combines dependable commercial performance, efficient propane operation, and long-term reliability for businesses that depend on consistent hot water every day.


Why Choose the Noritz NC199-OD-LP Tankless Water Heater?

Commercial-Grade Hot Water Capacity

  • Delivers up to 9.8 GPM to support demanding commercial hot water applications.
  • 199,900 BTU maximum input provides dependable performance during peak operating hours.
  • Ideal for restaurants, salons, offices, lodging facilities, and light commercial buildings.

Outdoor Installation Flexibility

  • Designed specifically for exterior installation in commercial environments.
  • Eliminates the need for indoor venting and helps maximize usable interior space.
  • Compact wall-mounted design simplifies placement while maintaining service accessibility.

Continuous On-Demand Hot Water

  • Provides an uninterrupted supply of hot water without relying on stored reserves.
  • Supports multiple fixtures and commercial equipment operating simultaneously when properly sized.
  • Helps businesses maintain productivity without waiting for tank recovery.

Continuous On-Demand Hot Water

  • Provides an uninterrupted supply of hot water without relying on stored reserves.
  • Supports multiple fixtures and commercial equipment operating simultaneously when properly sized.
  • Helps businesses maintain productivity without waiting for tank recovery.

Built for Long-Term Commercial Reliability

  • Engineered for consistent performance in demanding business environments.
  • Space-saving wall-mounted design helps optimize equipment layouts.
  • Backed by Noritz commercial tankless technology for dependable, long-lasting operation.
More Information
Noritz 9.8 GPM 199,900 BTU Commercial Propane Outdoor Tankless Water Heater (.82 UEF)
FeatureSpec
SKUNC199-OD-LP
Weight (in lbs)54
Brand/ManufacturerNoritz
UPC817000013363
Additional InformationWiFi: Compatible
Heating BTUHigh: 199,900 | Low: 16,000
Heat Exchanger MaterialCopper
Venting TypeVentless
Electrical120V AC, 60Hz
Outlet Diameter3/4" NPT
Inlet Diameter3/4" NPT
ConnectionBottom
Temperature Control Range100°F - 185°F
Fuel TypePropane
Mounting TypeWall mounted
Height23.6"
Width13.8"
Depth9.4"
Flow Rate 70°F Temperature Rise4.8
Flow Rate 50°F Temperature Rise6.7
Flow Rate 30°F Temperature Rise9.8
Flow Rate9.8 GPM
Uniform Energy Factor (UEF)0.82
LocationOutdoor
Indoor / OutdoorOutdoor
Warranty5-year warranty on the heat exchanger, a 5-year warranty on defective parts, and a 1-year in-home labor warranty
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
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Customer Questions
Which installation type is best for my home?
The outdoor design is ideal for homes with suitable exterior installation locations. Because the unit is mounted outside, it can help conserve indoor space and simplify venting requirements. It is important to ensure the installation location meets local codes and manufacturer recommendations.
What should homeowners know about service access and maintenance location?
Outdoor installation requires consideration of technician access and surrounding clearances. The unit should be mounted where maintenance can be performed safely and efficiently. Proper placement helps simplify future service visits.
What types of commercial applications are this water heater best suited for?
This commercial tankless water heater is designed for applications that require consistent hot water delivery, such as restaurants, multifamily properties, office buildings, and light industrial facilities. The on-demand design helps eliminate standby heat loss associated with traditional storage tanks. Proper sizing should be based on peak demand requirements.
How can a tankless system help improve operational efficiency in commercial settings?
Tankless technology heats water only when needed, helping reduce unnecessary energy consumption. This can contribute to lower operating costs compared to systems that continuously maintain stored hot water. The compact design may also free up valuable mechanical room space. Consistent performance supports daily business operations.
What safety features are commonly built into these commercial tankless systems?
These systems include built-in safety controls such as flame detection, overheating protection, and gas flow monitoring. These features help ensure safe and reliable operation. Regular inspection ensures continued safety compliance.
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