Supplemental instructions for gas water heaters installed in potable/space heating applications.

Local codes or plumbing authority requirements may vary from the instructions or diagrams provided in this manual and take precedent over these instructions.

Hot water

supply to

Combination Potable and Space Heating Application

 

house

Hot water

 

supply to

From HOT

heating

outlet on

unit

water heater

 

Tee fitting for vertical hot water supply lines.

Hot water

 

 

From HOT

 

 

outlet on

supply to

 

 

 

 

water heater

house

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hot water supply to heating unit

Tee fitting for horizontal hot water supply lines.

Tee fitting must be installed as shown. This ensures that any air in the water lines will be purged through the domestic water faucets and showers.

DANGER: When this system requires water for space heating at elevated temperatures (above 125°F [52°C.]), a mixing or tempering valve must be installed in the hot water supply line to the house in order to reduce the scald hazard potential.

DANGER: Any piping or components used in the installation of this water heater in a combination potable and space heating application must be suitable for use with drinking water.

DANGER: If this water heater is installed in an application intended to supply domestic hot water needs and hot water for space heating purposes, do not connect the heater to an existing heating unit or components of a heating system that have previously been used with a non drinking water system. Toxic chemicals such as those used for boiler treatment may be present and will contaminate the drinking water supply causing possible health risks. Never introduce toxic chemicals, such as those used for boiler treatment, into this system.

Typical Piping Diagram for Combination Potable/Space Heating Installation

Spring loaded check valve in heating unit hot water supply line and cold water return line (not supplied with water heater)

NOTE: This check valve is incorporated in some heating units. Refer to the installation instructions supplied with specific heating unit to determine if it is required.

Isolation valve in hot water supply line to heating unit (not supplied with water heater)

See diagrams above for proper pipe application for vertical or horizontal supply lines

Temperature and Pressure

Relief Valve

Gas line to water heater

Water Heater Jacket

Temperature and pressure relief valve discharge line

Combustion Air Inlet

Openings

Air vent

 

 

 

Domestic hot water supply

 

 

Heat Trap

6” Min.

Mixing or

 

tempering

 

valve (refer

 

to warning

 

above)

Shut-Off

 

 

Valve

 

Isolation valve in cold

 

water return line from

 

heating unit (not

 

supplied with water

 

heater)

Cold water return line from heating unit

Hot water supply line into heating unit

Drain valve

(not supplied with water heater)

Incoming cold water supply

Thermal Expansion Tank (if required-not supplied with water heater)

Heating unit

15

6” Air Gap

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Rheem PVR50-80 (NAT) warranty Combination Potable and Space Heating Application

PVR50-80 (NAT) specifications

The Rheem PVR50-80 (NAT) is a premium hot water system designed for households with high demands for hot water. Known for its reliability and efficiency, this model offers a perfect blend of innovative technology and user-friendly features, making it a great choice for both residential builders and homeowners.

One of the standout features of the Rheem PVR50-80 is its 5-star energy efficiency rating, which is made possible by the unit’s advanced heating technology. This system utilizes a gas-fired water heater with a robust 80-litre storage capacity, making it an excellent option for families with varying hot water needs. With a maximum temperature of 75 degrees Celsius, it provides ample hot water for showers, baths, and household chores, ensuring that your family will never run out.

Rheem has integrated various technologies into the PVR50-80 to enhance its performance and reliability. The unit features a reliable temperature control system that allows users to set the desired water temperature accurately. This ensures consistent temperature delivery while minimizing energy consumption and waste. Additionally, the model is equipped with a durable vitreous enamel tank, which is designed to prevent corrosion and enhance the lifespan of the water heater.

The Rheem PVR50-80 also comes with an electronic ignition system that ensures easy and safe start-up every time. This feature eliminates the need for continuous pilot lighting, leading to improved energy efficiency. Moreover, the heater includes a variety of safety features, such as a temperature-pressure relief valve, which provides peace of mind for homeowners.

Another notable characteristic of this hot water system is its compact design, allowing for flexible installation in various spaces, including tight spots in homes. The unit is compatible with both natural gas and LPG systems, making it versatile for different household setups.

Rheem stands out in the market not only for producing efficient and powerful water heaters but also for their focus on quality and durability. The PVR50-80 (NAT) is backed by an extensive warranty, reflecting the manufacturer’s confidence in its product quality.

In conclusion, the Rheem PVR50-80 (NAT) is a powerful, efficient, and reliable choice for any household that requires a steady supply of hot water. With its advanced features, durable construction, and user-friendly operation, it remains a popular option in the competitive market of hot water solutions.