The Rheem GT199PVN (Natural Gas) Power Vented tankless hot water heater is our heavy duty unit meant for homes or businesses with more than 3 bathrooms, large-volume demands for hot water, or hot water circulating systems, you should choose the GT-199 heavy-duty series water heater.

Tankless gas commercial water heaters by Rheem-Ruud are designed to fill the need wherever hot water is required. Typical installations include: restaurants, hotels, laundry mats and multiple family housing.

Extensive manifold capability up to 20 of the commercial tankless units can be linked in a manifold configuration to meet the hot water needs of larger commercial applications. Energy saving design fully modulating burners are designed to use only as much gas as needed to satisfy the hot water demand. Space saving design compact dimensions simplify installations and fit tight spaces where larger water heaters may not. Remote control digital display thermostat displays temperature, verifies operation and shows maintenance and error codes for easy service. Exclusive combustion monitoring device monitors the combustion process and turns off the fuel supply if incomplete or inadequate combustion is detected. Exclusive film wrap overheat limiter instantly detects any overheating in the heat exchanger and shuts down the unit if unsafe temperature is detected. Built-in electric power burner provides installation flexibility, allowing for horizontal or vertical vent terminations up to 47-1/2 feet (indoor model).

Efficiency these models have been tested according to DOE test procedures, and exceed the thermal efficiency and standby loss requirements of ASHRAE Standard 90.1b-2001 (Part of the Federally mandated Energy Policy Act (EPact)). Also exceeds energy efficiency codes of all states including California Energy Commission (CEC).Safety and construction these products are design certified by CSA:

The 4" Z-Flex Gas Vent Universal Appliance Adapter is required for venting this model.

Please Note: ***If the water heater is installed anywhere other than a single family dwelling, such as a commercial application, or in any system in which the water is recirculated, the applicable warranty periods will be limited to three (3) years.

Temperature Increase / Gallons Per Minute

• 140ºF Rise at 2.4 gpm
• 130ºF Rise at 2.6 gpm
• 120ºF Rise at 2.8 gpm
• 110ºF Rise at 3.0 gpm
• 100ºF Rise at 3.3 gpm
• 90ºF Rise at 3.7 gpm
• 80ºF Rise at 4.1 gpm
• 77ºF Rise at 4.3 gpm
• 70ºF Rise at 4.7 gpm
• 60ºF Rise at 5.5 gpm
• 50ºF Rise at 6.6 gpm
• 45ºF Rise at 7.4 gpm
• 35ºF Rise at 8.5 gpm

Warning: This water heater is not suitable for use in manufactured (mobile) homes!

Height: 25 3/8"

Width: 14 7/8"

Depth: 11 1/8"

Primary Specifications

• Model: GT199PVN
• 7.4 gpm at a 45ºF temperature rise (up to 8.5 gpm at 35ºF)
• Electronic ignition increases efficiency (no standing pilot light)
• A remote control thermostat is included with all models with 100ºF 180ºF setpoint range (factory set at 120ºF)
• Environmentally friendly Low NOx burner meets SCAQMD rule 1146 requirements
• UMC-117 remote control
• Warranty: 3-year limited warranty on parts (10 years on heat exchanger.)
• Rheem GT199PVN Heavy Duty Tankless Water Heater Indoor, Natural Gas
• Guardian OFW(TM) overheat film wrap
• Digital display on thermostat shows temperature setting and maintenance/error codes
• Built-in electric blower to force exhaust gas to the outside
• EZ-Link(TM) cable connects two like units to operate as one, doubling capacity
• Supplied w/ a 120 volt power cord
• Weight: 55 pounds
• Dimensions: 25 3/8"h x 14 7/8"w x 11 1/8"d

Technical Specifications:

• Power Vent Natural Gas
• 3/4" Water Connections
• 3/4" Gas Connection
• D.O.E. Annual Operating Cost$167 Nat / $246 LP
• Temp Range: 100° 180°F
• 19,000 199,000 BTU's is the
• 7.4 GPM Gas Water Heater
• 10-Year Limited Warranty on Heat Exchanger
• 3-Year Limited Warranty on Parts 
• Continuous hot water
• Energy saving design
• Compact, space saving design
• Intelligent electronic controls and sensors
• Self diagnostic program
• Digital display shows temperature setting and maintenance codes
• Exclusive sensing burner technology
• Exclusive film wrap overheat limiter
• Built-in electric blower
• Indoor units use Category III stainless steel vent
• Indoor models supplied with a 120 Volt power cord
• Low NOx emissions meet SCAQMD rule 1146 requirements
• Remote Control Included
• EZ-Link™ cable connects two like units to operate as one, doubling capacity – now available for high demand applications (cable not included)
• Dimensions: 25 3/8"H x 14 7/8"W x 11 1/8"D
• Weight: 55 lbs.
• Inlet Gas Pressure designed to operate at 8” w.c. liquid propane & must not exceed 14” w.c. for liquid propane
• A remote control thermostat is included with all models (100 F 140 F set point range) Requires 18 AWG, 2 conductor thermostat wire for remote control connection. Wire not included.

Venting:

• Diameter: 4 inch
• Material: Stainless Steel (AL29-4C) sealed
• Minimum length: 1 ft. if used with 90 degree elbow, wall thimble and exhaust vent hood.
• Maximum length: 47.6 ft. (10.5m) with one 90 degree elbow. Less 5 ft. for each additional 90 degree elbow (2.5 ft for each 45 degree elbow)

Minimum clearances for installation

• top 12"
• vent (indoor models only) 2"
• front 12"
• side 1/2"
• bottom 12"
• back 0"

Energy Requirements

• Ignition: Electric (120 V)
• Power: 19,000 199,900
• Energy Factor: .82

***Our Recommended Accessories:

• 4" Z-Flex Gas Vent Universal Appliance Adapter - Required for venting with 4" venting materials.
• BrassCraft 36" Long Stainless Steel Gas Connector w/ Pro Coating - Every gas water heater requires a gas connector and this model is our recommended top pick. We highly recommend this particular model for saving you time and money!  Also available in different lengths if required - simply call us toll free at 888-793-2665.
• Rheem Tankless Water Heater High Altitude Chip - Required if heater will be used above 3200 ft.
• Sioux Chief Gas Tankless Water Heater Connector Set - Required to connect all gas tankless water heaters to the corresponding water and gas lines. Includes pressure relief valve.
• RTG20040 - This cable connects two Rheem tankless gas water heaters to operate together as one unit for high demand applications.

You may download a product owner's manual below:

• Download Product Specification Sheet (PDF)

• Download Product Owner's Manual (PDF)

• Get Adobe Acrobat Reader

**Please note, Adobe Acrobat Reader is required to view pdf files

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Temporarily Backordered

This item ships UPS or FedEx ground. Delivery times related to these ship methods are usually between 2 and 5 business days once the product leaves the warehouse. We will email you tracking information once the product leaves our warehouse. UPS or FedEx ground deliveries do not require a signature and may be left at the ship to location. All deliveries will occur Monday through Friday.

UPS or FedEx ground deliveries do not include a guaranteed delivery date. Should you require a specific delivery date or expedited shipping please add the item to the shopping cart and view the shipping options drop down box. If the product is eligible for expedited shipping the shipping options and pricing will be listed. Please contact our customer service department with any questions related to shipping. (800) 297-6076, M-F, 8am to 5pm CST.