Amana VR8205 White Rodgers Model 36E22, Measuring Inlet Gas Pressure Alternate Method

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Redundant

Solenoid

INLET

ON/Off

Switch

Inlet Pressure Tap

(Side of Valve)

 

 

WR

 

M

1

O

P

3

 

 

 

F

 

 

 

 

 

 

F

C

2

 

ON

Main Regulator

Adjust

Main

Solenoid

OUTLET

Outlet Pressure Tap

(Side of Valve)

Figure 39

White Rodgers Model 36E22

CHECK GAS INPUT AND PRESSURES

Gas supply pressure and manifold pressure with the burn- ers operating must be as specified on the rating plate.

CHECKING GAS PRESSURE

Gas inlet pressure should be checked and adjusted in accordance to the type of fuel being consumed.

With Power and Gas Off:

1.Honeywell Model VR8205, or White Rodgers Models 36E36 or 36E22, or Robertshaw Model 7222: Connect a water manometer or adequate gauge to the “inlet pressure tap” of the gas valve.

As an alternative method, inlet gas pressure can also be measured by removing the cap from the drip leg and installing a predrilled cap with a hose fitting (Figure 41).

With Power and Gas On:

2.Put furnace into heating cycle and turn on all other gas consuming appliances.

 

Inlet Gas Pressure

Natural

Min. 5.0" W.C., Max. 10.0" W.C.

Propane

Min. 11.0" W.C., Max. 14.0" W.C.

Inlet Gas Pressure Must Not Exceed the Maximum Value Shown.

Figure 40

Figure 41

Measuring Inlet Gas Pressure

(Alternate Method)

CHECK MANIFOLD PRESSURE

A tapped opening is provided in the gas valve to facilitate measurement of the manifold pressure. See the “Outlet Pressure Tap” in Figures 36, 37, 38, & 39. A “U Tube” manometer having a scale range from 0 to 12 inches of water should be used for this measurement. The manifold pressure must be measured with the burners operating .

To adjust the pressure regulator, remove the adjustment screw or cover on the gas valve. Turn out (counterclockwise) to decrease pressure, turn in (clockwise) to increase pres- sure. Only small variations in gas flow should be made by means of the pressure regulator adjustment. For natural gas, the manifold pressure must be between 3.2 and 3.8 inches water column (3.5 nominal). For propane gas, the manifold pressure must be between 9.7 and 10.3 inches water column (10.0 nominal). Any major changes in flow should be made by changing the size of the burner orifice.

CHECK GAS INPUT (NATURAL GAS ONLY)

To measure the gas input using the gas meter proceed as follows:

1.Turn off gas supply to all other appliances except the furnace.

If operating pressures differ from above, make necessary pressure regulator adjustments, check piping size, etc., and/or consult with local utility.

2.With the furnace operating, time the smallest dial on the meter for one complete revolution. If this is a 2 cubic foot dial, divide the seconds by 2; if it is a 1 cubic foot dial, use the seconds as is. This gives the seconds per cubic foot of gas being delivered to the furnace.

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Contents Table of Contents Installation InstructionsTo The Owner To The InstallerAdditional Safety Considerations Safety and Unit LocationIII. Air Requirements II. General InformationPage IV. Category I Venting Vertical Venting Specially Engineered InstallationsLouvers and Grilles Counterflow Rotated Induced Draft Blower Upflow Rotated Induced Draft BlowerMasonry Chimneys Blower AssemblyTypical Multiple Flue Clay Tile Chimney Termination 10 Feet Or Less From Ridge Wall or Parapet Checklist SummaryCheck 1 Proper Chimney Termination Termination More Than 10 Feet From Ridge Wall or Parapet Check 4 Debris in CleanoutCheck 5 Liner Condition Check 3 Chimney Crown ConditionCheck 6 Dilution AIR Check 7 Complete the InstallationFIX 1 Liner Termination FIX 2 -CHANGE Venting ArrangementsGAS Piping VI. Gas PipingGeneral Furnace Layout Upflow InstallationsGas Inlet Through Furnace Right Side Gas Inlet Through Furnace Bottom Side UpflowGas Inlet Through Right Side Counterflow Counterflow InstallationsPropane GAS Piping Charts Propane Gas Installation TypChecking GAS Piping Tanks and Piping Propane GAS UnitsTypical Field Wiring VAC Control Circuit VIl. Electrical WiringJunction Box Left Side Junction BoxLow Voltage Heating Fan Off AdjustmentsTerminals AIR Circulation Blower FAN TimingHeat Anticipator Setting Line Voltage Connection for AccessoriesVIlI. Circulating Air and Filters Control ModuleUpflow/Horizontal Furnaces Return Air Plenum InstallationBottom Return Filter Sizes Furnace Mounted Filter RackTiming Chart for Normal Cooling Operation Integrated Ignition Control Diagnostic Signal ChartLight Signal Operation Number Refer to AbnormalIX. Sequence of Operation Integrated Ignition Control Start-Up, Adjustments, and ChecksCounterflow Furnaces Left To Right Installation Right To Left InstallationRollout Protection Device Burner BOX Auxiliary Limit ControlAuxiliary Limit Control Figure Abnormal Operation Integrated Ignition ControlHoneywell Model VR-8205 White Rodgers Model 36E36 Gas ValvesRobertshaw Model Operating InstructionsMeasuring Inlet Gas Pressure Alternate Method White Rodgers Model 36E22High Limit Control Filter Removal XI. MaintenanceAIR Filter AIR Filter Upflow FurnacesFurnace mounted Filter Rack Counterflow Burner Flame Cleaning of Burners Qualified Servicer onlyBurners General Information

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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