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.

Safety 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 insures that any air in the water lines will be purged through the domestic water faucets and showers.

WARNING: When this system requires water for space heating at elevated temperatures (above 125°F.), 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.

WARNING: 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.

WARNING: 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.

Installation Instructions Operating Instructions

Typical Piping Diagram for Combination Potable/Space Heating Installation

Care

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

Air vent

Domestic hot water supply

Incoming cold water supply

and

NOTE: This 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

HOT

 

 

 

I L

ER

 

supply line to heating unit

F E

 

 

 

 

 

E V

L

(not supplied with water heater)

 

 

 

 

See diagrams above for proper

 

 

 

 

pipe application for vertical

 

 

 

 

or horizontal supply lines

 

 

 

 

Gas line to water heater

 

 

 

 

Gas water heater

 

 

 

 

Temperature and

 

 

 

 

pressure relief valve

 

 

 

 

discharge line

 

 

 

 

 

Mixing or tempering

 

valve (refer to

 

warning above)

 

Isolation valve in

 

cold water return

 

line from heating

COLD

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)

Heating unit

Cleaning Troubleshooting Tips Customer Service

6air gap

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Rheem HG Combination Potable and Space Heating Application, Cleaning Troubleshooting Tips Customer Service

HG specifications

Rheem HG is a groundbreaking water heating solution designed to meet the needs of modern households and commercial spaces. Known for its efficiency and reliability, the Rheem HG product line integrates advanced technologies and innovative features, making it a standout choice in the competitive water heater market.

One of the primary features of the Rheem HG series is its energy efficiency. With an impressive Energy Factor (EF) rating, these water heaters utilize cutting-edge heat pump technology to extract heat from the air, significantly reducing the amount of electricity required to heat water. This efficient operation not only leads to lower utility bills but also contributes to environmental sustainability.

The Rheem HG series is equipped with smart technology, allowing users to monitor and control their water heating system remotely. Through a user-friendly mobile app, homeowners can adjust temperature settings, receive maintenance alerts, and track energy usage, ensuring optimal performance and peace of mind. This connectivity feature exemplifies Rheem’s commitment to integrating the latest smart home technologies into its products.

In addition to energy efficiency and smart features, Rheem HG is designed with durability in mind. Built with high-quality materials, these water heaters are resistant to corrosion and have extended warranties that reflect their reliability. The innovative construction also includes advanced insulation, which minimizes heat loss, ensuring that hot water is readily available whenever needed.

Another significant characteristic of the Rheem HG series is its versatility. Available in various sizes and capacities, these water heaters can accommodate the hot water demands of different households, from small apartments to larger homes. The flexibility in installation options, including both indoor and outdoor configurations, makes it easier for homeowners to find a solution that fits their specific requirements.

Safety features are paramount in the design of the Rheem HG series. Equipped with advanced leak detection systems, automatic shut-off mechanisms, and enhanced temperature control, these water heaters prioritize the safety of users while delivering consistent performance.

In summary, Rheem HG represents a fusion of energy efficiency, modern technology, durability, versatility, and safety. With its commitment to innovation and sustainability, Rheem continues to be a leader in the water heating industry, providing solutions that cater to the evolving needs of today’s consumers. Choosing a Rheem HG water heater not only guarantees high performance but also supports a greener future.