Amana VR8205 Upflow/Horizontal Furnaces, Bottom Return Filter Sizes, Furnace Mounted Filter Rack

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Minimum Recommended Filter Sizes

Qty. - Nominal Size, Inches (Sq. In. Surface Area)

Size_Air Flow

Disposable

Permanent

045_30

1 - 20 X 25 (500)

1 - 15 X 20 (300)

070_30

1 - 20 X 25 (500)

1 - 15 X 20 (300)

070_40

2 - 14 X 25 (350)

1 - 16 X 25 (400)

090_30

1 - 24 X 24 (576)

1 - 16 X 25 (400)

090_50

2 - 18 X 25 (450)

1 - 20 X 25 (500)

115_40

2 - 14 X 25 (350)

1 - 18 X 25 (450)

115_50

2 - 18 X 25 (450)

1 - 20 X 25 (500)

140_50

2 - 18 X 25 (450)

1 - 20 X 25 (500)

Figure 25

Upflow/Horizontal Furnaces

UPFLOW INSTALLATIONS

This furnace contains rails for installing 16 x 25 x 1 filters on each side of the interior furnace cabinet. A retainer is also included for bottom return. Refer to the chart below for filter sizes when using bottom return.

Bottom Return Air Filters

Size

Filter Size, Inches

Type

045, 070

14 X 25 X 1

P

90

16 X 25 X 1

P

115, 140

20 X 25 X 1

P

Figure 26

Bottom Return

Filter Sizes

The illustration below shows how the filter is retained over the bottom return air opening.

Guide dimples locate the side and bottom return cutout locations. Use a straight edge to scribe lines connecting the dimples. Cut out the opening on these lines. An undersized opening will cause reduced airflow. For bottom return connection, remove the bottom of the cabinet before setting the furnace on the raised platform or return air duct.

HORIZONTAL INSTALLATIONS

Filter(s) must be installed external to the furnace casing. Using a central return with filters installed in the duct behind the return air grille allows filters to be replaced by just removing the grille. This prevents having to go into the attic or crawl space when a filter has to be changed.

Refer to the preceding chart on Recommended Minimum Filter Sizes. (Figure 25)

COUNTERFLOW INSTALLATIONS

A filter rack is shipped with the furnace. To use this rack, proceed as follows:

Figure 28

Furnace Mounted Filter Rack

1.Center the filter rack over the plenum flange and push down firmly (Figure 28). Since the return air plenum will need to be attached later, do not screw the filter rack down.

2.Install the return air plenum on the furnace. For proper filter performance, the sides of the plenum must be at least as tall as dimension “A” shown in Figures 29 and 30.

Return Air

Figure 27

Filter Retainer

Optional

 

 

 

 

 

 

 

 

 

Access

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

"A"

Door

 

 

 

 

 

 

 

Min

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

One inch throwaway filters should be sized for a face velocity of 300 feet per minute or less (14 x 25 x 1 throwaway = 730 CFM max.; 16 x 25 x 1 throwaway = 830 CFM max.; 18 x 25 x 1 throwaway = 940 CFM max.; 20 x 25 x 1 throwaway = 1040 CFM max.) All other filters should be sized according to their manufacturer’s instructions.

For air delivery of less than 1800 CFM; use one side return or bottom return.

For air delivery of 1800 CFM or higher; use two side returns, or one side return plus bottom return.

Figure 29

Return Air Plenum Installation

NOTE: For easier filter inspection and replacement, the installer may wish to provide a removable panel in the front of the return air plenum.

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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 Check 3 Chimney Crown Condition Check 4 Debris in CleanoutTermination More Than 10 Feet From Ridge Wall or Parapet Check 5 Liner ConditionFIX 2 -CHANGE Venting Arrangements Check 7 Complete the InstallationCheck 6 Dilution AIR FIX 1 Liner TerminationGAS Piping VI. Gas PipingGas Inlet Through Furnace Bottom Side Upflow Upflow InstallationsGeneral Furnace Layout Gas Inlet Through Furnace Right SideGas Inlet Through Right Side Counterflow Counterflow InstallationsTanks and Piping Propane GAS Units Propane Gas Installation TypPropane GAS Piping Charts Checking GAS PipingJunction Box VIl. Electrical WiringTypical Field Wiring VAC Control Circuit Junction Box Left SideAIR Circulation Blower FAN Timing Heating Fan Off AdjustmentsLow Voltage TerminalsControl Module Line Voltage Connection for AccessoriesHeat Anticipator Setting VIlI. Circulating Air and FiltersFurnace Mounted Filter Rack Return Air Plenum InstallationUpflow/Horizontal Furnaces Bottom Return Filter SizesRefer to Abnormal Integrated Ignition Control Diagnostic Signal ChartTiming Chart for Normal Cooling Operation Light Signal Operation NumberIX. Sequence of Operation Integrated Ignition Control Start-Up, Adjustments, and ChecksCounterflow Furnaces Left To Right Installation Right To Left InstallationRollout Protection Device Abnormal Operation Integrated Ignition Control Auxiliary Limit ControlBurner BOX Auxiliary Limit Control FigureOperating Instructions Gas ValvesHoneywell Model VR-8205 White Rodgers Model 36E36 Robertshaw ModelMeasuring Inlet Gas Pressure Alternate Method White Rodgers Model 36E22High Limit Control AIR Filter Upflow Furnaces XI. MaintenanceFilter Removal AIR FilterFurnace mounted Filter Rack Counterflow General Information Cleaning of Burners Qualified Servicer onlyBurner Flame Burners

VR8205 specifications

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