WARNING

To prevent death or personal injury due to electric shock, disconnect electrical power.

1.Remove both doors from the furnace.

2.Remove and save the screws holding the junction box to the left side of the furnace.

3.Disconnect the hose from the pressure switch. Leave the other end attached to the induced draft blower.

4.Remove five wires entering junction box from split grommet in blower deck.

5.Swap locations of the two bushings in the junction box.

6.Rotate the junction box 180 degrees so the access panel continues to face forward. The open snap bush- ing should now be at the bottom.

7.Insert five wires into the split grommet on the right side of the blower deck.

8.Insert the five wires through the open bushing in the bottom of the junction box.

9.Attach the junction box to the right side of the furnace, using the screws removed in step 2.

10.Reconnect the hose to the pressure switch.

11.Check the location of the pressure hose and all wiring. Confirm that it will not be damaged by heat from the burners or by the rotation of the fan. Also confirm that wiring location will not interfere with filter removal or other maintenance.

After the junction box is in the desired location, use washers to connect field-supplied conduit to the junction box in accordance with NEC and local codes. Connect hot, neu- tral, and ground wires as shown in the furnace wiring diagram. The wires and ground screw are located in the furnace junction box.

Low voltage wiring may enter through the right or left side of the furnace (as viewed for an upflow installation - top or bottom for a horizontal installation). See Specification Sheet for hole locations. Run the thermostat wires through either grommet in the blower deck (Figure 21).

Low voltage wires may be connected to the terminal strip as shown in Figure 22.

IMPORTANT NOTE: To avoid possible equipment mal- function, route the low voltage wires to avoid interference with filter removal or other maintenance.

Low Voltage

Heating Fan

Terminals

 

Off Adjustments

 

2

 

 

 

 

1

 

 

 

 

 

ON

OFF

Style A

 

 

 

 

 

 

OR

 

 

Pins (4)

B2

 

 

 

 

 

B1

 

B3

 

 

 

 

Style B

 

 

 

 

Jumper

B4

 

Figure 22

Integrated Ignition Control

(Viewed in an Upflow Installation)

AIR CIRCULATION BLOWER FAN TIMING

All items in this section refer to the air circulation blower fan, not to the induced draft blower. The timing sequence for the induced draft blower is not adjustable.

When a call for cooling occurs, the circulation fan will come on. It will remain on for 45 seconds after the call for cooling ends. This fan timing is not adjustable.

During normal heating operation, the circulation fan will come on 37 seconds after the gas valve opens. This timing is not adjustable.

As shipped, the circulation fan will remain on for 90 seconds after the gas valve closes. If desired, this timing may be adjusted. The adjustment pins or switches are near the low voltage terminal strip (Figure 23).

 

Style A

 

 

 

 

 

 

Style B

60

2

 

 

 

 

 

 

 

 

 

 

 

 

B2

 

 

 

 

 

 

 

 

 

 

 

 

Second

1

 

 

 

 

 

 

 

 

 

B1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B3

Delay

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

90

2

 

 

 

 

 

 

 

 

 

 

 

 

B2

 

 

 

 

 

 

 

 

 

 

 

 

Second

1

 

 

 

 

 

 

 

 

 

B1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Delay

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120

2

 

 

 

 

 

 

 

 

 

 

 

 

B2

 

 

 

 

 

 

 

 

 

 

 

 

Second

1

 

 

 

 

 

 

 

 

 

B1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B3

Delay

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

180

2

 

 

 

 

 

 

 

 

 

 

 

 

B2

 

 

 

 

 

 

 

 

 

 

 

 

Second

1

 

 

 

 

 

 

 

 

 

B1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Delay

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Switches viewed in an upflow installation.

Figure 23

Heating Fan Off Adjustments

17

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Image 17
Amana VR8205 Heating Fan Off Adjustments, Low Voltage, Terminals, AIR Circulation Blower FAN Timing
Page 16 Page 18

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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