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OWNER’S MANUAL 

 

MODEL FS-GM20AS-A 

RETURN GRILLE MOUNT 

ELECTRONIC AIR CLEANER 

 

IMPORTANT:  PLEASE READ MANUAL BEFORE OPERATING UNIT 

 

 
 
 
 
 
 
 
 
 
 
 

Features

 

 

Lifetime Filter System never needs replacing 
Electronically removes dust, mites, pollen, pet dander, tobacco smoke, cooking smoke 
and grease, mold, fungi, bacteria, and more down to 0.01 micron 
Light Weight Aluminum Collecting Cells are durable and easy to maintain 
Plastic Intake Grille is easy to wipe clean 
Hinged, Swing Out Door allows easy access to filters 
Automatic interlock switch disconnects power when unit is opened 
Durable Scratch-Resistant powder coat paint finish resists abrasion 
Electronic Air Proving Switch allows for quick wiring, and cycles air cleaner on/off with system fan 
Indicator Light shows Air Cleaner is working properly at a glance 
Easily installs on the wall or ceiling in the main return duct of a central forced air heating/ 
cooling system 

Summary of Contents for FS-GM20AS-A

Page 1: ...cting Cells are durable and easy to maintain Plastic Intake Grille is easy to wipe clean Hinged Swing Out Door allows easy access to filters Automatic interlock switch disconnects power when unit is opened Durable Scratch Resistant powder coat paint finish resists abrasion Electronic Air Proving Switch allows for quick wiring and cycles air cleaner on off with system fan Indicator Light shows Air ...

Page 2: ...mospheric and household dust coal dust insecticide dust mites pollen mold spores fungi bacteria pet dander cooking smoke and grease tobacco smoke particles and more down to 0 01 micron 0 01 micron 1 2 540 000 of an inch BENEFITS Helps provide relief for allergy or asthma suffering Helps prevent damaging black dust from staining walls and furnishings reducing the amount of time and money spent clea...

Page 3: ... the enclosure Remove the five screws securing the electrical compartment cover The hole in wall or ceiling should be made to fit the Air Cleaner opening as closely as possible The opening should be framed to provide adequate support for the Air Cleaner Before mounting the Air Cleaner cover the framing and close the opening to within 1 4 in 63 cm of the dimension of the rear of the enclosure of th...

Page 4: ...etergent is available from your installer or dealer SERVICE Testing Air Proving Switch APS The APS sensor must protrude into the airstream to work effectively The sensor is very sensitive and operation may be affected by cold temperatures an air exchanger or a fresh air duct connected to the cold air return near the Air Cleaner The APS uses a Triac in its output circuit which affects the voltage s...

Page 5: ...urn off power to the Air Cleaner at the source 1 Remove the electrical compartment cover 2 Disconnect wiring from the LED HV1 HV2 and 24 V terminals 3 Remove the hex nut from the power board 4 Release the power board from the 3 plastic board spacers by pinching the end of the spacers and pulling the board out 5 Push new board onto spacers Make sure spacers click into place to hold down board 6 Scr...

Page 6: ...age should be reset with a high voltage meter as soon as possible 1 Remove electrical compartment cover 2 Turn the HV ADJ potentiometer fully counterclockwise Air Cleaner may arc or snap at this point 3 Turn the HV ADJ potentiometer clockwise slowly until the arcing and snapping stops 4 Replace electrical compartment cover Testing Cell For Bad Contact 1 Turn off power switch Open access door to Ai...

Page 7: ...nizing Wire Table 2 Specifications Ionizing Bar Spring Wire Fig 4 Schematic MODEL FS GM20AS A HOUSE SIZE n a AIR FLOW up to 2000 cfm DUCT SIZE 22 x 29 1 in CABINET DIMENSIONS 31 4 x 24 4 x 7 WEIGHT 38 lbs POWER 120 v 60 hz ...

Page 8: ...Fig 6 Exploded View Fig 5 Dimensions ...

Page 9: ...ry Ducts were not cleaned prior to installation of air cleaner Clean ducts Cell plate s are bent Remove cells and adjust to original spacing using needle nose pliers Voltage is too high Adjust high voltage potentiometer on power board clockwise Contacts on high voltage tray are broken or bent If possible pull up contacts with needle nose pliers or remove high voltage tray and replace contacts Arro...

Page 10: ...arts or replacement parts Such costs may be covered by a separate warranty provided by the dealer LIMITATIONS OF WARRANTY All implied warranties including implied warranties of merchantability are hereby limited in duration to the period for which the limited warranty is given The expressed warranties made in this warranty are exclusive and may not be altered enlarged or changed by any distributor...

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