VI) COMBO HEATING

WARNING:

Keep the area around the heater clear and unobstructed.

This section serves as a guide for the installation and use of “Combo” heating systems utilizing a domestic water heater that has been specifically approved for such use. It is writ- ten for those knowledgeable in the required trades and pro- fessionals involved in the design and installation of Combo Heating Systems.

It is the responsibility of the installer/designer to follow all applicable codes to ensure the effectiveness and safety of the installation.

Read Before Proceeding

CAUTION:

Keep safety your first priority. Take all pre- cautions to avoid creating a fire, health or safety hazard.

The following requirements must be met for the installation of Combo Heating Systems:

1.All components used for the distribution of water in the heating loop must be suitable for potable water. These include all piping, fittings, solder and fluxes, pumps for circulation of water, valves, etc.

2.The water heater must not be connected to a hydronic heating system that has been used previously.

3.No boiler treatment chemicals of any kind shall be intro- duced into the system.

4.The Combo System components must be selected and sized to meet and maintain the total calculated demands for both domestic service hot water and space heating requirement. The sizing and installation must be per- formed in accordance with good engineering practice such as “ASHRAE Handbooks”, HRAI, “Hydronics Institute Manuals”, CSA B139-04, NFPA 31, ANSI Z223.1, CSA F280, National/Provincial Building Codes, CSA C22.1, ANSI/NFPA 70, CSA B51 and/or codes having jurisdiction.

5.The air handler (fan coil) and/or the circulating pump in a baseboard hydronic loop will require a dedicated 120V circuit. This must be provided and identified for this pur- pose.

6.All piping between the water heater and the air handler or hydronic baseboard loop must be adequately insulat- ed to reduce heat loss.

7.If the local jurisdiction requires a back-flow preventer in the cold water line, an expansion tank of adequate size must be installed.

8.“Combo” Heating Systems require higher water temper- atures than other applications. When the system is used to supply water for Combo Heating applications, a means, such as mixing valve, must be installed to tem- per the water in order to reduce scald hazard potential (see Figures 14, 15 & 16).

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GSW JWF507, JWF657 manual VI Combo Heating, Keep the area around the heater clear and unobstructed
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JWF657, JWF507 specifications

The GSW JWF657 and JWF507 are two prominent models in the GSW lineup, known for their innovative features, advanced technologies, and robust characteristics. These models have been designed to cater to a wide range of applications, making them popular choices among users looking for efficient performance and reliability.

Starting with the JWF657, this model boasts a high-capacity design, making it suitable for both residential and commercial use. One of its standout features is the energy-efficient motor that not only reduces power consumption but also enhances performance. The JWF657 includes a user-friendly control panel that allows for easy adjustments and settings, ensuring that users can operate the machine with minimal effort.

In terms of technology, the JWF657 integrates smart sensors that monitor operational parameters in real-time. This feature ensures that the equipment runs at optimal efficiency, reducing wear and tear while extending the lifespan of the product. Another noteworthy attribute is the noise reduction technology, which minimizes operational sound, making it ideal for environments where noise levels need to be kept to a minimum.

On the other hand, the JWF507 model is tailored for those who prioritize compactness without compromising performance. Its sleek design makes it a perfect fit for smaller spaces, while its powerful engine ensures that it can handle demanding tasks with ease. The JWF507 also includes advanced safety features such as automatic shut-off systems and overload protection, ensuring user safety and preventing equipment damage.

Both models are equipped with advanced filtering technologies that promote better air quality and energy conservation. They come with durable construction materials that can withstand harsh conditions, ensuring longevity and reliability. Additionally, routine maintenance is simplified with easy access points for cleaning and servicing.

In summary, the GSW JWF657 and JWF507 are engineered for excellence, combining innovative features with user-friendly designs to offer optimal performance. Whether you need high capacity or compact efficiency, these models stand out in the market for their reliability, safety features, and advanced technologies. Users can trust these products to deliver consistent results while being easy to maintain and operate.
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