NATURAL GAS CONNECTION

Refer to Figure 11 for the general layout at the furnace. The following rules apply:

1.Use black iron or steel pipe and fittings for the building piping.

2.Use pipe joint compound on male threads only. Pipe joint compound must be resistant to the action of the fuel used.

3.Use ground joint unions.

4.Install a drip leg to trap dirt and moisture before it can enter the gas valve. The drip leg must be a minimum of three inches long.

5.Use two pipe wrenches when making connection to the gas valve to keep it from turning. The orientation of the gas valve on the manifold must be the same as shipped from the factory.

6.Within six feet of the unit, install a manual cutoff valve between the meter and the unit. If a union is installed, the union must be downstream of the manual shutoff valve, between the shutoff valve and the furnace.

7.Tighten all joints securely.

8.The furnace must be connected to the building piping by one of the following:

•Rigid metallic pipe and fittings.

•Semirigid metallic tubing and metallic fittings. Alumi- num alloy tubing must not be used in exterior loca- tions.

•Listed gas appliance connectors, used in accor- dance with the terms of their listing, must be com- pletely in the same room as the furnace.

•The connectors or semirigid tubing must be pro- tected against physical and thermal damage when installed. Aluminum-alloy tubing and connectors must be coated to protect against external corrosion when in contact with masonry, plaster or insulation or are subject to repeated wettings by such liquids as water (except rain water), detergents or sewage.

Figure 11

General Furnace Layout

UPFLOW INSTALLATIONS

When the gas piping enters through the right side of the furnace, the installer must supply the following fittings (starting from the gas valve):

•90 degree elbow

•Close nipple

•90 degree elbow

•Straight pipe to reach the exterior of the furnace (Fig- ures 12 & 13).

Figure 12

Gas Inlet Through Furnace Right Side

A ground joint union, drip leg, and manual shutoff valve must also be supplied by the installer. In some cases, the installer may also need to supply a transition piece from 1/ 2" to another pipe size.

Figure 13

Gas Inlet Through Furnace Bottom Side

(Upflow)

13

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Page 13
Image 13
Amana VR8205 General Furnace Layout, Gas Inlet Through Furnace Right Side, Gas Inlet Through Furnace Bottom Side Upflow
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VR8205 specifications

The Amana VR8205 is a robust and innovative gas valve designed for use in a variety of heating applications, particularly in residential and commercial HVAC systems. This versatile valve offers a combination of advanced technologies and user-friendly features, making it a popular choice among HVAC professionals and system installers alike.

One of the key features of the Amana VR8205 is its two-stage operation, allowing for precise control of gas flow. The dual-stage design enables the valve to modulate the gas supply based on the heating demand, which enhances system efficiency and promotes better temperature regulation. This feature not only contributes to energy savings but also helps maintain a comfortable indoor environment.

Additionally, the VR8205 is equipped with a strong, durable body construction that ensures reliability and longevity. Designed to withstand harsh operating conditions, the valve’s materials are resistant to corrosion and wear, making it suitable for various applications. The robust design of the Amana VR8205 minimizes the likelihood of leaks or failures, providing peace of mind to both installers and end-users.

The valve operates on low voltage, typically requiring 24 volts, which makes it energy-efficient and compatible with most modern thermostatic control systems. This low-voltage operation also simplifies installation, as it reduces the complexity and requirements for the electrical setup.

Another noteworthy characteristic of the Amana VR8205 is its integrated safety features. It includes a combination of automatic and manual shut-off mechanisms, providing an added layer of safety in case of malfunctions. This ensures that the gas supply can be quickly halted in emergency situations, protecting both people and property.

Moreover, the Amana VR8205 is designed for easy maintenance, featuring simple access points for servicing and troubleshooting. This ease of maintenance is crucial for HVAC professionals, as it allows for quick adjustments and repairs, ultimately reducing downtime.

Lastly, the Amana VR8205 has a reputation for adaptability, being compatible with various heating appliances, including furnaces, boilers, and water heaters. Its versatility makes it an excellent solution for a wide range of heating applications, ensuring optimal performance across different systems.

In summary, the Amana VR8205 gas valve is characterized by its two-stage operation, durable construction, low-voltage functionality, integrated safety mechanisms, and ease of maintenance. These features combine to offer a reliable, efficient, and flexible solution for modern heating needs.
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