Honeywell F90B User's Manual
Contents
1. The F90 Self Contained Electronic Air Cleaner is used where overhead air cleaning is required restaurants conference rooms lounges and offices The F90 provides its own air circulation and is used in any situation that requires the removal of contamination from an A ALLOW AT LEAST 16 INCHES 406 MILLIMETERS FROM FRONT enclosed area OF F90 TO WALL FOR INSTALLATION AND REMOVAL OF CELLS Z ALLOW AT LEAST 9 INCHES 229 MILLIMETERS FROM BACK The F90 is not explosion proof Do not use the F90 where OF F90 TO WALL EOP REMOVAL OF COVER dangerous levels of potentially explosive gases vapors or ies dusts are present in the cleaning area Fig 1 F90A installation dimensions in in mm 3 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER The F90 is equipped with two standard light emitting diodes LEDs and one optional LED ON LED Lights when the solid state power supply is powered and operating normally CHECK LED Lights if the F90 requires service or if the test button is pressed WASH LED if used Lights when cell washing is overdue To understand the operating sequence of the F90 refer to Fig 3 Determine Number of F90 Needed The sizing procedure determines the number of F90s needed for any application The correct number required for a particular application depends on type of contamination number of occupants volume of the room u2. Mounted into a ceiling joist using lag screws See Fig 8 e Mounted into a suspended ceiling using threaded steel rods See Fig 9 e Mounted into a ceiling joist or suspended ceiling using a transition plate accessory See Figs 10 and 11 e Mounted into a wall using the wall mounting hardware accessory See Fig 12 The F90 may also be mounted with lag bolts or threaded steel rods reaching down to the venturi plate However ensure the bolts or rods are short enough to avoid interfering with the cells Assure 1 1 2 threads are visible beyond the nut For F90 installation dimensions see Fig 7 Mounting the F90 Using Lag Screws Locate the ceiling joists See Fig 8 Drill four 5 16 in 8 mm pilot holes in the joists using the mounting template to locate holes Lift the F90 to the mounting location Mount the F90 using four 3 8 in x 3 in 10 mm x 76 mm lag screws and washers N Po NOTE Assure the washer size is larger than the 3 4 in 19 mm diameter of the keyhole or assure the mounting screws are secured in the small keyhole slot 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER 1 LOCATE WASH LED CUTOUT BEHIND 2 USE A KNIFE TO CUT A HOLE IN SWITCH COVER ASSEMBLY STICKER THE STICKER Pad gt INSERT LED INTO LENS FROM BACK SPUSE TED CENS NTO REAGE 4 OF THE SWITCH COVER ASSEMBLY 5 ATTACH NEW STICKE
3. 13 mm space between it and the height adjusting nut 4 Lift the F90 into position and locate the four studs 5 Raise the F90 so that the four studs pass through the keyhole openings 6 Slide the F90 horizontally so the studs are located at the slot end of each keyhole opening NOTE As viewed from the F90 or floor side the slot portion of each keyhole is above the surface of the top plate Position the F90 so the studs are located at the slot end of each keyhole When the securing nuts are tightened they should nest firmly in the sockets to prevent any lateral movement 68 0103 6 Revised 11 07 10 SELF CLINCHING PEM STUD 1 1 2 INCHES ry 38 mm 1 16 INCH 2mm x A s 7 8 INCH gt 16 x 16 INCH 7 16 INCH 406 X 406 mm 11 mm 19 x 19 INCH 483 X 483 mm JA SELF CLINCHING PEM STUDS 4 ON 16 INCH 406 mm CENTERS 1 1 2 INCHES 38 mm LONG As INCH 11 mm DIAMETER HOLES 4 ON 16 INCH 406 mm CENTERS M1532 Fig 10 Mounting F90 using 272577A Transition Plate 7 Tighten the securing nuts until the F90 top plate engages the height adjusting nuts Mounting the F90 Using the 118636C Wall Mounting Kit Accessory Two wall mounting brackets are used to support the F90 See Fig 11 The two brackets must be mounted on the wall with 16 in 406 mm for the F90A or 8 in 203 mm for the F90B between centers so that the lag bolts will align with the F90 mounting holes Fasten the b
4. TURN ON AIR CLEANER IS HOLD TEST BUTTON m PUSH TEST BUTTON LISTEN FOR SNAPPING WASH LED LIT sega ST BUTTON LISTEN FOR S DOWN DOES CHECK LED LIGHT CLEAN CELLS WIPING IONIZER TURN UNIT OFF OPEN COVER REMOVE WIRES INSPECT ACCESS PANEL DEFEAT INTERLOCK TURN CHECK FOR CELLS FOR AIR CLEANER ON CHECK FOR CORRECT VOLTAGE DAMAGED IONIZER INPUT VOLTAGE TO POWER SUPPLY CHECK TO ON LED CONTACTS BOARD TERMINALS P1 AND P2 DAMAGED REPLACE POWER REPLACE OR REPLACE SUPPLY AND LED REPAIR CELLS POWER A DRIVER BOARD SUPPLY CHECK WIRING BACK THROUGH SWITCH REPLACE LE INTERLOCK POWER CORD AIR CLEANER OK INSPECT CELLS FOR OUTLET AND CIRCUIT BREAKER BENT COLLECTOR PLATES BROKEN IONIZER DIRT O CORRECT WIRING DIRT ON CORRECT WIRING INSULATORS No DAMAGED IONIZER WITH OHMMETER OR COLLECTOR CHECK FOR SHORT BOREL CONTACT TABS CELL FRAME AND COLLECTOR TERMINAL CELL CELLFRAME AND SHORTED IONIZER TERMINAL REMOVE CELLS IS WASH LED LIT REPAIR OR REPLACE CELL S REPLACE CELLS TO USE THIS CHART 1 FOLLOW THE STEPS IN EXACT SEQUENTIAL ORDER 2 EACH TIME YOU ISOLATE AND FIX A PROBLEM GO BACK TO START 3 REPEAT ALL THE STEPS UNTIL THE AIR CLEANER CHECKS OUT OK O m F l o INFINITE RESISTANCE ELECTRONIC COMPONENTS ON POWER SUPPLY BOARDS ARE NOT FIELD REPLACEABLE ATTEMPTED SERVICE WILL DAMAGE BOARDS IF TROUBLESHOOTING INDICAT
5. Waxes Dishwasher Detergent Solution all types Steam Method not appropriate for cleaning prefilter 4 Carefully wipe ionizer wires to remove any remaining water deposits 5 Assure cells are completely dry before reinstalling in the air cleaner If cells are placed into the F90 while still wet the cells may short out and arc frequently Although the F90 will appear to be operating the cells may not be cleaning during the drying period F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER HIGH VELOCITY A DETERGENT SPRAY A gt NS Ci AN ip STEAM gt 15 Using high velocity water or steam to clean cells M677B Fig 6 Slide the cells into the channel guides until they touch the backstop of the F90 Assure the cell airflow arrow is pointing toward the fan In this position the ionizer wires are facing downward away from the fan 7 Slide the prefilters into the channel guides until they touch the back of the channels 8 Swing the cover up until it closes engaging the two latches See Fig 13 Replacing lonizer Wires Broken or bent ionizer wires can cause an electrical short to ground often resulting in visible arcing or sparking Do not use cells until broken wires are removed Cells can be used temporarily with one wire missing but replace the wire as soon as possible Replacement wires are supplied cut to length with eyelets on both sides for easy installation O
6. Description F90A F90A 120 Vac 60 Hz 220 230 240 Vac 50 Hz Cover Assembly includes inlet grille 1 Woodgrain with black trim 202927A 202927A Gray 202927B 202927B Inlet Grille 2 Woodgrain with black trim 202307 202307 Gray 202308 202308 Prefilter 20 x 12 1 2 202289 2 202289 2 Latch 4 Woodgrain with black trim 202619 2 202619 2 Gray 202620 2 202620 2 Heavy Duty Commercial Cell 4 1 2 x 12 1 2 x 20 FC37B1030 2 FC37B1030 2 6 Filter Rail pre and post filter 202300 4 202300 4 a Outlet Louvers Large Large 7 Woodgrain with black trim 202313 4 202313 4 Gray 202314 4 202314 4 fe sola state Power supe zp 2osa2rs o Fourposiiononroi switch 902 9032 Parts and Optional Accessories Not Illustrated Part Number Description F90A F90A 120 Vac 60 Hz 220 240 Vac 50 Hz Hard Wired Remote Control Assembly 190097B 190097B lonizer Wires package of 5 136434AA 136434AA Blank Plate for Discharge Grille 202613 202613 Ceiling Mount Kit 4074EAB 4074EAB Carbon Filter 1 2 x 20 x 12 1 2 inches 13 x 508 x 318 mm 202614 2 202614 2 Wall Mounting Kit blank plate provided 118636C 118636C 68 0103 6 Revised 11 07 22 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER Fig 26 F90A exploded view Part numbers are keyed to Parts List 68 0103 6 Revised 11 07 23 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER LIMITED
7. LIMITED TO ANY WARRANTIES OR MERCHANTABILITY WORKMANSHIP OR FITNESS FOR A PARTICULAR USE This warranty gives you specific legal rights and you may have other rights which vary from state to state How to make a warranty claim or have questions answered Should you have a warranty claim or questions about the warranty policy contact the distributor or dealer from which you purchased the product or the authorized warranty repair stations nearest your location NOTE Do not return any products or parts to the factory without a factory issued Return Warranty Good Label issued by Air Pure Systems In the event you or other persons have any questions concerning the use and care of this product of this warranty please call or write the factory Air Pure Systems 16873 Fish Point Rd SE Prior Lake MN 55372 1714 Phone 800 998 1919 Fax 800 221 3248 Air Pure Systems 16873 Fish Point Rd SE Prior Lake MN 55372 1714 Phone 800 998 1919 Fax 800 221 3248 68 0103 6 Revised 11 07 24 www cleanairfacility com
8. 30 cfm per person is required for bars and cocktail lounges EXAMPLE 3 Sizing by Air Changes per Hour and Room Volume A shop proprietor wants to use F90As to remove high levels of smoke from the air The shop is 25 x 40 feet 8 x 12 meters with a 15 feet 4 5 meters ceiling How many F90As are required Guideline In the absence of other information select the correct number of F90A units to provide between 10 and 20 air changes per hour depending on contaminant level The F90As should be located directly above or as close as possible to the source of contamination Solution F90As required Desired Air Circulation Minute F90A Capacity _ Calculate the volume of the room 25 x 40 x 15 feet 15 000 cubic feet 8 x 12 x 4 5 meters 432 cubic meters 2 Determine the volume of air to be circulated each hour Ten air changes per hour are used here on the assumption that the intent is to reduce but not completely eliminate smoke 15 000 cubic feet x 10 air changes hour 150 000 cubic feet hour 432 cubic meters x 10 air changes hour 4320 cubic meters hour 3 Determine the volume of air to be circulated each minute 150 000 cubic feet hour 2500 cubic feet minute cfm 4320 cubic feet hour 72 cubic meters minute m3 minute 60 minutes hour 60 minutes hour 4 F90A capacity HI setting is 1250 cfm 35 m3 minute Number of F90As Required 2500 cfm 2 F90As 72 ms minute 2 F90As 1250 cfm 35 m minute INSTALLATION
9. When Installing this Product A WARNING Explosion Hazard I f Can cause property damage severe injury or 1 Read these instructions carefully Failure to follow them death could damage the product or cause a hazardous condition 1 Do not install or use the F90 where there is any danger of gas vapor or dust explosion 2 Check the ratings given in the instructions and on the 2 Do not install or use the F90 if explosion proof product to assure the product is suitable for your fixtures are specified application f l Sharp Edges 3 Assure the installer is a trained experienced service Can cause personal injury technician an Wear protective gloves while handling the cells and 4 After installation is complete check out product prefilter to avoid cuts from the sharp metal edges operation as provided in these instructions 68 0103 6 Revised 11 07 collection plates and ionizer wires WARNING Must be installed by only a Honeywell trained installer F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER N CAUTION Do not connect the power supply until F90 is mounted If the F90 is powered before an electrical check be extremely careful to avoid electrical shock Also take care when working near the F90 moving parts Unpacking 1 All F90 components are packed in one box Slide the F90 out of the box and remove all packaging material e Carefully check all F90 components when unpacking e Check all pac
10. and the other has two hinge pins To properly install the cover connect the hinge pins to the hinges 2 Attach the hinge pins by lifting the cover above the hinge and lowering the pins into the hinges If the cover is properly attached it can hang below the F90 3 Carefully swing the opposite end of the cover upward and engage the latches See Fig 13 Assure the latches are connected properly Fig 13 Opening and closing F90 cover CHECKOUT Inspect The Installation Be sure the F90 U Is securely fastened to the ceiling or wall Does not interfere with normal occupant traffic Is properly oriented for good air circulation Cells are correctly oriented with air flow arrows pointing toward the fan LI Prefilters are properly installed below the cells Discharge louvers are securely installed U Cover is securely latched LJ SYSTEM light turns on when fan is running Fan stops and ON LED turns off when the cover is opened L Surfaces and the installation area are wiped clean Marked or nicked paint is retouched 68 0103 6 Revised 11 07 12 Check F90 Operation El Turn on power L Push the test button to assure the power supply is functioning at all three speeds L Use the manual switch on the F90 manual wall switch or remote transmitter to assure that the fan runs correctly at all three speed settings U Assure the ON LED lights when the fan is operating LJ Assure the WASH LED if used lights when
11. can be compensated for by bringing in more outdoor air to maintain low contaminant levels or tolerating a partially cleaned atmosphere Either may be acceptable to some users Regardless of the method used for calculation the architectural features lighting fixtures sprinkler system ducts and grilles in the room to be cleaned may influence the number of F90s required For ambient air cleaning establish a uniform airflow pattern throughout the entire space When there is a lack of mounting space fewer F90s than indicated may be installed More F90s may be required for oddly shaped rooms that do not have even airflow If any questions should arise consult your full service distributor Honeywell Commercial Air Products To calculate the number of F90s needed using occupant load refer to Example 2 page 6 To calculate the number of F90s needed using air changes per hour and room volume refer to Example 1 page 5 or Example 3 page 6 Choose Location Mount the F90 on the ceiling near the center of the room A 45 diagonal mounting prevents stale air build up in corners and may allow use of F90s at lower speeds See Fig 4 In larger rooms divide the area into sections and mount an F90 in the center of each section In rooms requiring varying levels of air cleaning concentrate F90s where air cleaning is required most See Fig 4 NOTE To assure even air distribution the F90 draws air into the bottom of the air cleaner an
12. 27 000 cubic feet 12 x 14 x 4 5 meters 756 cubic meters 2 Assuming seven air changes per hour with 27 000 cubic feet 756 cubic meters volume the graph below indicates three F90As are required 3 Clean outdoor air is also required to replenish oxygen and dilute gaseous contaminants 20 cfm per person is required for offices AIR CHANGES PER HOUR 25 20 BARS x 15 1 CAFETERIAS BOWLING LUNCHEONETTES CENTERS Y RESTAURANTS 10 Y 9a PLACES OF ag ASSEMBLY 4 75 y STORES 6g OFFICES 5 5 H Y 4 2 3 S 2 L j 10 000 20 000 30 000 40 000 50 000 60 000 70 000 283 567 850 1133 1416 1700 1983 ROOM VOLUME IN CUBIC FEET AND CUBIC METERS reer 5 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER Example 2 Sizing by Occupant Load A cocktail lounge averages 85 occupants How many F90As should be installed Solution F90As Required ASHRAE Recommended Air Circulation Minute F90A Capacity 1 ASHRAE recommended minimum air circulation is 30 cubic feet per minute cfm 0 85 m3 minute per person For 85 people the recommended air circulation would be 85 people x 30 cfm 0 85 m3 minute per person 2550 cfm 72 m3 minute 2 F90A capacity HI setting is 1250 cfm 35 m3 minute Number of F90A s Required 2550 cfm 2 F90A s 72 m3 minute 2 F90As 1250 cfm 35 m3 minute 3 Clean outdoor air is also required to replenish oxygen and dilute gaseous contaminants
13. Aim water straight on or at a very slight angle when rinsing collector plate side of cell This will minimize uneven spacing of collector plates caused by water pressure Steam method Be extremely careful when steam cleaning to avoid warping or bending the collector plates of the cell Remember that the cell will be hot after steam cleaning and be extremely careful to avoid burns Use only low pressure or wet steam NOTE Assure the steam pressure is less than 5 psi 35 kPa and steam temperature is less than 250 F 121 C Discolored Aluminum After cleaning the cell and prefilter occasionally look stained If the stain is black or very dark it is probably dirt residue This can lower the F90 efficiency Clean and rinse the cell and prefilter again If the stain is white it is detergent residue This lowers the F90 efficiency and can corrode the aluminum Rinse the cell and prefilter again If the stain is tan yellow or a thin film it is probably tobacco smoke or other airborne dirt Moderate discoloration does not affect the F90 efficiency Recleaning is not necessary Removing Specific Contaminants from the Cell The following list gives the appropriate cleaning procedure for types of contamination often found on cells and prefilters Cleaning procedures are listed in order of preference Be careful not to bend cell blades Reinstalling the Cell Prefilter and Activated Carbon Filter if Used 1 Wipe off surface dir
14. Do not use LED soap or acid base cleaners or solvents from lighting Assure the water temperature is between 150 F and 190 F 66 C and 88 C If using cold water detergent follow the The F90 needs servicing if it is damaged or if efficiency is instructions included with the detergent substandard if abnormal voltages are measured or if the CHECK LED lights NOTE Cold water detergent cleans less effectively than hot water detergent Opening the Cover and Removing the Cells and Prefilters CAUTION WEAR GLOVES A TO PROTECT ici HANDS FROM 1 Before servicing the F90 turn off power to DETERGENT the F90 When servicing the F90 stand on a stable work platform or ladder ae a LS o 1 Open the cover by pulling the two latches located on the front of the cover and swinging the cover down until it hangs See Fig 13 2 Remove the prefilter and the cell from the channel guides 3 Replace the activated carbon filter if used if it needs replacement Cleaning the Prefilter 1 Shake out or vacuum the accumulated contaminants from the prefilter If necessary soak the prefilter in alkaline detergent solution Do not soak the prefilter in an acid detergent solution or use high pressure water Fig 14 When cleaning cell agitate in detergent solution air or steam to clean the prefilter 3 Carefully wipe off ionizer wires before prerinsing NOTE Wash the cell before washing the prefilter
15. ES A POWER SUPPLY PROBLEM REPLACE THE ENTIRE POWER SUPPLY ASSEMBLY M1525B Fig 20 F90 electrical troubleshooting procedure 17 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER ELECTRONIC AIR CLEANER SECURING SCREWS 5 POWER BOX COVER l 2 POWER BOX COVER n SECURING SCREWS 5 amp NOTE SCREWS ONLY NEED TO BE LOOSENED NOT REMOVED Were Fig 21 Removing the F90 Power Box Assembly 68 0103 6 Revised 11 07 18 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER BLACK COLLECTOR CONTACT BOARD PERFORMANCE SWITCH YELLOW ON OFF 3 SPEED FAN SWITCH PUSH BUTTONS WIRING TERMINALS HI MED LO OFF POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A INTERLOCK SAFETY SWITCH BLACK O A lt on A REPLACE THE BLACK LEADS WHITE lt _ 2 OO GROUND GREEN L M6152 Fig 22 F90A 120 Vac model schematic diagram BLACK COLLECTOR CONTACT BOARD PERFORMANCE SWITCH ON OFF 3 SPEED FAN SWITCH PUSH BUTTONS WIRING TERMINALS POWER SUPPLY PROVIDE DISCONNECT MEANS at AND OVERLOAD PROTECTION AS REQUIRED MED A LEFT CELL AND CONTACT BOARD ON LO TWO CELL AIR CLEANER ONLY OFF A INTERLOCK SAFETY SWITCH Li BLACK A HOT Lo M11576 GROUND 1 Fig 23 F90A 120 Vac model schematic diagram 19 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER BLACK COLLEC
16. Honeywell F90A B Self Contained Commercial Electronic Air Cleaner APPLICATION The F90A B Self Contained Commercial Electronic Air Cleaners are ceiling mounted and remove airborne contaminants such as tobacco and cooking smoke dust pollen bacteria and larger viruses from the air circulated through the unit The Honeywell Trademark is used under license from Honeywell Intellectual Properties Inc by Air Pure Systems Honeywell International Inc makes no representations or warranties with respect to this product PRODUCT DATA FEATURES Removes up to 95 percent of the staining dirt from the air as measured by the Initial Dust Soot Method using atmospheric dust refer to the American Society of Heating Refrigerating and Air Conditioning Engineers ASHRAE Standard 52 76 Provides Coanda air distribution by drawing in dirty air from below cleaning it electronically and discharging the clean air in four directions parallel with the ceiling Three speed fan circulates up to 1250 cfm 35 m3 min for F90A and 550 cfm 15 5 m3 min for F90B Solid state power supply is self regulating maintains peak efficiency over a wide range of cell dirt loading conditions and provides nonlethal current levels Interlock switch prevents operation when the cover is open or the grille is not in place e Heavy duty commercial cells prefilter and grille are removable for cleaning Three position adjustable d
17. If the 4 Prerinse the cell in hot water before submerging prefilter is washed first lint residue from the prefilter in detergent will contaminate the wash water and deposit inside 5 Soak the cell in the solution for up to 15 minutes the cell Dispose of the wash water after each use Agitate the cell in the solution if necessary See Fig 14 6 Remove the cell from the detergent solution 7 Place the cell in another container of clear hot water 150 F to 190 F 66 C to 88 C for final rinsing Rinse the cells for five to ten minutes 8 Remove the cell from the rinse water Allow the cell to drain and dry before energizing Stand cell on one corner for optimum water drainage 13 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER 9 Carefully wipe ionizer wires to remove any remaining residue Check the collection plates of the cell for any detergent residue If any residue is remaining repeat the rinse and detergent soaking process until collector plates are clean Buildup can reduce the F90 efficiency 10 Cleaning the Cell Using High Velocity Water Pressure or Low Pressure Steam Alternate methods can be used to clean some contaminants from the F90 cell To prevent damage to prefilter do not use these methods to clean the prefilter See Fig 15 Water method Be careful to avoid damage to the cell If detergent is required use an alkaline base detergent Do not use an acid detergent
18. ONE YEAR WARRANTY Air Pure Systems warrants its air cleaner products to be free from defects in workmanship or materials under normal use and service for a period of one 1 year from the date of purchase by the originial end user If at anytime during the warranty period the product is defective or malfunctions Air Pure Systems through the distributor or dealer from which the product was purchased or through an authorized warranty repair station shall at Air Pure Systems option replace or repair the defective product or component This warranty does not cover removal or installation costs This warranty shall not apply if it is shown that the defect or malfunction was caused by damage which occurred during handling or shipment improper electrical connections improper use of the product or abuse Air Pure Systems sole responsibility shall be to repair or replace the product within the terms stated above AIR PURE SYSTEMS SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING DIRECTLY OR INDIRECTLY FROM ANY BREACH OF WARRANTY EXPRESS OR IMPLIED OR ANY OTHER FAILURE OF THIS PRODUCT Some states do not allow the exclusion or limitation or incidental or consequential damages so this limitation may not apply to you THE WARRANTIES SET FORTH HEREIN ARE EXCLUSIVE AND AIR PURE SYSTEMS EXPRESSLY DISCLAIMS ALL OTHER WARRANTIES WHETHER WRITTEN OR ORAL IMPLIED OR STATUTORY INCLUDING BUT NOT
19. R TO SWITCH 6 REINSTALL SWITCH COVER ASSEMBLY COVER ASSEMBLY SCREWS A Fig 6 Installing the WASH LED 68 0103 6 Revised 11 07 8 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER F90A F90B 7 8 22 DIAMETER 29 1 4 743 gt Tm lt l 19 1 4 489 KNOCKOUT LATCHES 24 610 102 w 16 406 gt 610 16 29 1 4 743 FOWER 7 178 A t KEYHOLE A ALLOW AT LEAST 16 INCHES 406 MILLIMETERS FROM FRONT OF F90 TO WALL FOR INSTALLATION AND REMOVAL OF CELLS ALLOW AT LEAST 9 INCHES 229 MILLIMETERS FROM BACK OF F90 TO WALL FOR REMOVAL OF COVER 3 8 10 DIAMETER bk H 3 4 19 L t 3 8 10 DIAMETER M920 Fig 7 F90 installation dimensions in in mm WOODJOETS Mounting the F90 Using Threaded 16 INCH CENTERS Steel Rod Arrange two 2 x 4 supports as shown in Fig 9 Drill four 5 16 inch pilot holes through the supports using the mounting template to locate holes Mount the steel rods to the supports Lift the F90 to the mounting location Mount the F90 to the steel rods by attaching the nuts and washers sss DRILL 5 16 INCH 8 mm Z VILLLLLLLA ZZZZZZ lt lt lt Z N 5 1 2 140 mm 2 REMOVE CELLS AND FILTERS m F 5 8 INCH 19mm PLATE DIAMETER KEY HOLES PROVIDED IN AIR e aa CLEANER HOUSING LAG SCHEW AND WASHER M1533 Fig 8 Mounting the F90
20. RONIC AIR CLEANER Cleaning the F90 Cleaning the Cell Using Alkaline Base Detergent The F90 removes a variety of contaminants from the air As it cleans the air the F90 cells and prefilters become dirty lowering the cleaning efficiency To maintain the F90 WARN NG reliability and efficiency regularly clean in n rvi eliability and efficiency regularly clean inspect and service Hazardous Chemical the F90 cells and prefilters cy Can cause personal injury Wear rubber gloves eye protection and a rubber apron for protection from the strong cleaning chemicals Keep detergent solution out of reach of children Clean cells with an alkaline base detergent solution Soaking the cells in commercial or home electric dishwasher detergent powder or liquid works well Use the hottest water possible hotter than 160 F 71 C If soaking does not clean the cells use high velocity detergent spray or steam Full service distributors provide a regular cleaning service to commercial establishments 1 Use acontainer such as a laundry tub or plastic tank that is large enough to hold at least one cell 2 Mix the alkaline base detergent with hot water carefully The WASH LED if used lights when cell washing is following the instructions on the detergent package overdue When the WASH LED lights wash the cells and i EE sa S or cea Ha ana wipe the ionizer wires Frequent cell cleaning keeps WASH etergent either powder or liquid
21. SONNEL ONLY TO REDUCE RISK OF ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING OTHER THAN CONTAINED IN THE OPERATING MAKE SURE CELLS INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO ARE CLEAN DRY PROPERLY INSTALLED TURN AIR CLEANER OFF OPEN COVER REPLACE SWITCH CLOSE COVER OR ON LED OFF FAN OFF DEFEAT INTERLOCK CHECK FOR INPUT DEFEAT INTERLOCK VOLTAGE TO SWITCH TURN AIR CLEANER ON CHECK FAN ONT LED ON FAN OFF TURN AIR CLEANER OFF OPEN COVER Geo Hee ass REMOVE ACCESS PANEL DEFEAT INTER OGIK TURN AIR CLEANER ON JUMPER SWITCH OBSERVR ON LED ON LED OFF FAN ON CONTACTS FOR EACH ep IN TURN ADJUST REPAIR REPLACE LED ON FAN ON INTERLOCK SWITCH PUSH TEST BUTTON LISTEN FOR REPLACE CHECK WIRING BACK SNAPPING SOUND SWITCH THROUGH POWER CORD AND OUTLET TO CIRCUIT BREAKER OR FUSE CHECK INPUT VOLTAGE TO INTERLOCK SWITCH HOLD DOWN TEST CHECK INPUT BUTTON IS VOLTAGE TO LED JUMPER ORANGE TURN OFF POWER CHECK LED LIT NOYES WIRE TO WIRE FROM MAKE SURE FAN CORRECT WIRING SPEED CONTROL MOTOR ROTATES OR FUSING MODULE TO FREELY REPLACE REPLACE LED FAN MOTOR FAN MOTOR IF NECESSARY RELEASE TEST REPLACE POWER BUTTON IS SUPPLY AND LED CHECK LED LIT DRIVER BOARD REPLACE SPEED CONTROL MODULE TURN OFF AIR CLEANER SHORT TURN OFF POWER MAKE SURE FAN m IONIZER TO FRAME MOTOR ROTATES FREELY REPLACE IS WASH LED LIT EE WITH TEST LEAD FAN MOTOR IF NECESSARY
22. TOR RED IONIZER rage CONTACT BOARD PERFORMANCE SWITCH Leak BLACK F ON YELLOW Q Wire POWER SUPPLY RED WHITE WASH or NG RED Hite CHECK 5 aD CEE ORANGE TF WEITE A Pl WHITE OFF nt Te L I LO F MED HI WHITE A TERMINAL BOARD FOR POWER SUPPLY CONNECTIONS POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A BROWN LEAD MUST BE CONNECTED TO TOP TERMINAL ON TRANSFORMER A INTERLOCK SAFETY SWITCH A PROVIDES ON OFF INDICATION ON OFF 3 SPEED FAN SWITCH A A FAN A LEFT CELL AND CONTACT BOARD ON MOTOR TWO CELL AIR CLEANER ONLY BROWN L 230 Vac N BLUE O M11577 Fig 24 F90A 230 Vac model schematic diagram CE compliant model 68 0103 6 Revised 11 07 20 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER BLACK COLLECTOR POWER SUPPLY CONTACT BOARD PERFORMANCE SWITCH YELLOW ON OFF 3 SPEED FAN SWITCH PUSH BUTTONS WIRING TERMINALS BROWN H MED VIOLET o BLUE OFF POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A INTERLOCK SAFETY SWITCH L4 BLACK ORANGE HOT AA REPLACE THE BLACK LEADS 2 WHiTE GROUND GREEN M6156 Fig 25 F90B 120 Vac model schematic diagram 21 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER REPLACEMENT PARTS LIST EXPLODED VIEW See Fig 26 for exploded view Part Number
23. d discharges air in four directions as shown in Fig 5 This Coanda air flow pattern assures that the clean air is distributed to all parts of the space Also if possible mount the F90 to aid the air circulation already established in the room F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER 3 Fig 5 F90 Coanda air flow pattern Outdoor Air ASHRAE Standard 62 89 specifies that every commercial space be provided with fifteen cfm per occupant of outdoor air to replenish oxygen and dilute CO2 If other internal sources of gaseous contamination are present additional outside air is needed to dilute the contamination M923 DANCE FLOOR LOW SMOKING LEVEL AT STAGE AND DANCE FLOOR USE ONE F90 EXAMPLE An office requires 20 cfm per person because the standard estimates some smoking some copy machine operation etc The standard assumes outdoor air will be cleaned to less than 75 micrograms per cubic meter prior to introduction into the space ASHRAE Standard 62 89 states that supplemental air cleaning to M1528A control smoke or additional outside air must Fig 4 F90 mounting considerations be provided as required HEAVY SMOKING LEVEL AT TABLES AND BAR USE THREE F90s Example 1 Sizing by Air Changes per Hour and Room Volume An office measures 40 x 45 feet 12 x 14 meters with a 15 foot 4 5 meter ceiling How many F90As should be installed Solution 1 Find the room volume 40 x 45 x 15 feet
24. e minor differences in performance can be expected if those conditions are changed MaG F90A odel F90A B Self Contained Commercial Electronic Air Cleaners rs aS Contains one or two FC37B heavy duty commercial cells a power supply assembly one or two prefilters cover with grille a power and speed control switch a performance selection switch a test button a three speed motor driven fan an interlock switch for the cover and grille a power cord and LED indication of system operation Color Available with gray finish or woodgrain with black trim Solid State Power Supply Assembly F90A 120 Vac 60 Hz 203361E F90A 220 240 Vac 50 Hz 203361J Electrical Ratings Voltage and Frequency specify when ordering 120 Vac 60 Hz 220 240 Vac 50 Hz Efficiency Up to 92 efficient as measured by the Initial Dust Spot Method using atmospheric dust according to the American Society of Heating Refrigeration and Air Conditioning Engineers ASHRAE Standard 52 76 Ambient Temperature Rating Shipping and Storage 20 F to 120 F 29 C to 49 C Operating The F90 is intended for use at ambient temperatures that usually are not higher than 90 F 32 C but for brief periods may be as high as 120 F 49 ORDERING INFORMATION If you have additional questions need further information or would like to comment on our products or services please write or phone 1 Yourlocal Honeywell Commercial Air Products Dist
25. ischarge louvers control the direction of discharged air Light emitting diodes LEDs indicate ON and CHECK WASH LED optional Test button shows presence of high voltage Available with gray finish or woodgrain with black trim Optional hard wired remote control assembly part number 190097B Optional carbon filters part number 202614 for ozone and odor control READ AND SAVE THESE INSTRUCTIONS Contents APPIICAtON cet u sauna hie ae 1 Fea DresS 2 secccc E ees seeesssbeaes decsvauae tage tend ence asa sah 1 Specifications u L see eve Na C ka eae tess saa 2 Ordering Information a 2 Planning the Installation uuu uuu u ua uu a suassuaa 3 Installation a E nancies CHECKOUT usa i m su apa simu mam a Simip us Adjustments Se IVIC6 s iu tasu hias Electrical Troubleshooting Replacement Parts List Exploded View 22 Limited One Year Warranty 24 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER SPECIFICATIONS Current and Power Consumption IMPORTANT F eee Current A Power W The specifications given in this publication do not include normal manufacturing tolerances Therefore a particular unit may not exactly match the listed F90A 120 specifications Also this product is tested and Vac 60 Hz calibrated under closely controlled conditions and som
26. kaging materials before discarding to assure no parts or papers are lost Use the mounting template marked on the outside of the box for easy installation 2 Pull the two latches located on the front of the F90 cover Swing the cover down and lift to disengage from the hinges 3 Remove the prefilter and cell from the channel guides 4 If installing the optional WASH LED remove the power supply switch plate To install the WASH LED see Fig 6 5 Remove the power box from the unit See Electrical Troubleshooting section for instructions Mounting A WARNING Heavy Equipment Can cause personal injury or equipment damage 1 If the ceiling is not reinforced properly the weight of the F90 could cause structural weakening and buckling The unit can fall presenting a danger to persons and equipment 2 When using the keyhole slots for mounting assure the washer diameter is larger than the keyhole diameter 3 4 in 19 mm or assure the mounting screws are secured in the small keyhole slot IMPORTANT 1 When mounting near walls allow at least 16 in 406 mm for cell installation and removal and 15 in 381 mm for cover installation and removal See Fig 7 2 Select a structurally strong part of the ceiling or wall for mounting Do not mount the F90 to a suspended ceiling to plaster or to wallboard If necessary construct strong framing to support the weight of the F90 The F90 can be mounted in any of four ways
27. m OSHA workplace regulations permit up to 0 100 ppm ozone concentration The F90 contributes 0 005 to 0 010 ppm of ozone to the indoor air The U S FDA and Health and Welfare Canada recommend that indoor ozone concentration should not exceed 0 050 ppm As a comparison the outdoor ozone level in major cities is sometimes higher than 0 100 ppm 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER If desired the ozone generated by the F90 can be reduced in one of two ways e Install the optional activated carbon filters e Open the cover and move the F90 performance switch to the LO setting Close the cover With the switch in LO the cleaning efficiency is reduced 5 to 15 percent depending on airflow NOTE The performance switch must be set solidly in either HI or LO position and not between or the F90 may not function properly See Fig 19 ELECTRICAL TROUBLESHOOTING A WARNING Electrical Shock Hazard Can cause personal injury or equipment damage 1 Electrical troubleshooting must be performed by only qualified personnel 2 The following procedures expose hazardous levels of electrical current Disconnect the power supply between checks and proceed carefully A COLLECTOR TERMINAL IONIZER TERMINAL COLLECTOR TERMINAL TWINS TL LN DO wt IONIZER CONTACT Tools And Equipment Troubleshooting the F90 requires Needlenose pliers for stri
28. nging ionizer wires and inserting edge connectors Test meter with 15 kVdc probe Troubleshooting Procedure The F90 troubleshooting charts quickly isolate F90 problems See Fig 20 If removing power box follow instructions below See Fig 21 For the F90 schematic diagrams see Fig 22 through 25 Removing The Power Box Open the power box and remove the power supply assembly as follows 1 Open the cover by pulling the two latches located on the front of the cover and swinging the cover down until it hangs See Fig 13 2 Remove the prefilter and the cell from the channel guide 3 Loosen the screws holding the power supply assembly cover plate and remove the cover plate See Fig 21 COLLECTOR CONTACT THE FRAME OF THE CELL SERVES AS GROUND M921A Fig 18 Checking cells for short circuits 3 Loosen two screws on inner wall of power supply assembly and three screws on the top of the assembly Slide the power supply assembly toward the center of the air cleaner and disconnect the two Molex connectors and the one quick disconnect See Fig 21 4 Remove the power supply assembly to a table or workbench 68 0103 6 Revised 11 07 16 mene AAN penro N vO M682 Fig 19 Setting performance switch in either Hl or LO F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER START ILILILILIL LLL WARNING A RISK OF ELECTRIC SHOCK THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PER
29. rackets to the wall studs with lag screws On masonry walls use appropriate screw anchors Wiring IMPORTANT All wiring must comply with local codes and ordinances Power Cord IMPORTANT Power supply cord must not be concealed above the ceiling or behind the walls The F90 120 Vac has a standard 3 prong plug on a 10 foot 3 meter power cord There must be a standard grounded outlet within 10 feet 3 meters of the F90 The F90 220 240 Vac power cord terminates in stripped leadwires for installation of a locally purchased plug Do not use an extension cord to power the F90 Keep the power cord out of the reach of building occupants Keep the power cord away from water Do not route the power cord near sharp objects that can damage the cord insulation F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER Permanent Wiring 1 2 Loosen the two screws and remove the plate covering the wiring compartment Remove the power cord e Cut the black and white wires of the power cord leaving six inches from the electrical connector Strip 1 2 in 12 mm insulation from the end of each wire e Cut the green wire flush with the electrical connector e Remove the power cord and strain relief bushing Install plug provided in the hole that contained the power cord Attach the conduit to the unit Run 3 strand no 14 wire through the conduit into the wiring compartment Wire the F90 using the wi
30. rder part no 136434AA To install 1 Hook the eyelet on one end of the wire over the spring connector on one end of the cell See Fig 17 Be careful to avoid damaging the spring connector or other parts of the cell 2 Hold the opposite eyelet with a needlenose pliers and stretch the wire the length of the cell Depress the opposite spring connector and hook the eyelet over it 3 Check the cell for short circuits using an ohmmeter See Fig 18 Check the resistance between the frame of the cell and both the ionizer and the collector contacts In each case the resistance should be infinite Modifying to Reduce Ozone Odor In normal operation the F90 generates a trace amount of ozone that is considerably under the limit prescribed by the U S Food and Drug Administration FDA During the first week or two of operation the amount may be higher because of sharp edges on some of the new high voltage metal parts Normal use dulls these edges in a short time 15 M1541 Fig 16 Reinstalling F90 cells REPLACING AN IONIZER WIRE SPRING CONNECTORS PRESS Gj AG EY LP Or oo NS f SO IONIZER WIRE NEEDLENOSE PLIERS M1540B A TWO EYELETS HOLD IONIZER WIRE TO CELL Fig 17 Installing new ionizer wire A person with an average sense of smell can detect the odor of ozone indoors in concentrations as low as 0 003 part per million pp
31. ributor 2 Air Pure Systems 16873 Fish Point Rd SE Prior Lake MN 55372 1714 Phone 800 998 1919 Fax 800 221 3248 www cleanairfacility com 68 0103 6 Revised 11 07 2 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER Shipping and Installation Weight lt 19 1 4 489 Heavy Duty GCommer ial Cell 9 2 Each 4 2 Each 4 1 2 386 Dimensions See Figs 1 and 2 Approvals Underwriters Laboratories Inc listed File No E30954 Guide No AGGZ 120 Vac units only Canadian Standards Association listed File No LR19060 120 Vac units only U S FCC Class B limits for RFI Computing Devices Rules Canadian EMI Standard Replacement Parts and Accessories See Parts List on page 22 A ALLOW AT LEAST 16 INCHES 406 MILLIMETERS FROM FRONT Hc 29 1 4 743 F OF F90B TO WALL FOR INSTALLATION AND REMOVAL OF CELLS 7 8 22 24 610 n A ALLOW AT LEAST 9 INCHES 229 MILLIMETERS FROM BACK DIAMETER 4 OF F90B TO WALL FOR REMOVAL OF COVER KNOCKOUT 102 w 16 406 gt M919 Fig 2 F90B installation dimensions in in mm PLANNING THE INSTALLATION A WARNING Explosion Hazard Can cause property damage severe injury or death 1 Do not install or use the F90 where there is any danger of gas vapor or dust explosion 2 Do not install or use the F90 if explosion proof electrical fixtures are specified Application and Operation
32. ring diagram shown in Fig 12 Assure the green wire is secured to the green grounding screw provided Reinstall the wiring compartment plate and tighten the screws BOLT AND WASHER MOUNT AS CLOSE TO CEILING AS POSSIBLE REMOVE CELLS AND FILTERS LAG SCREW BRACKETS TO NUT AND WASHER WALL STUDS A REPLACE REAR LOUVERS WITH BLANK PLATE ON F90 SIDE ADJACENT TO THE WALL M1536 Fig 11 Mounting F90 using 118638C Mounting Kit CONDUIT GREEN TO GROUND WHITE FROM F90 BLACK FROM F90 M1529 Fig 12 Wiring F90 Installing Activated Carbon Filters Cells and Prefilters 1 2 11 Insert the activated carbon filters if used into the channel guides closest to the fan Inspect the cells for broken ionizer wires and bent collector plates Moderately bent or warped collector plates can be bent back into shape Broken ionizer wires must be replaced for top efficiency as instructed on page 15 Insert the cells into the channel guides until they touch the back stop of the F90 Assure the cell airflow arrow is pointing toward the fan In this position the ionizer wires are facing downward away from the fan Insert the prefilters into the channel guides until they touch the back of the channels 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER Installing Cover 1 Before installing study the inside of the F90 cover One end has two latches
33. se of the room outdoor air quality 1 AIR CLEANER IS POWERED 2 FAN DRAWS CONTAMINATED AIR INTO THE BOTTOM OF THE F90 3 LARGE PARTICLES ARE CAUGHT IN THE PREFILTER SMALL PARTICLES PASS THROUGH THE PREFILTER 4 SMALL PARTICLES REMAINING IN THE AIR ENTER THE IONIZER SECTION IN THE IONIZER SECTION SMALL PARTICLES RECEIVE AN INTENSE ELECTRICAL CHARGE 5 THE SMALL CHARGED PARTICLES ENTER THE COLLECTING SECTION WHERE THEY ADHERE TO THE COLLECTOR PLATES OF OPPOSITE CHARGE CARBON FILTERS IF USED ABSORB ODORS AND OTHER GASEOUS CONTAMINANTS 6 CLEAN AIR PASSES THROUGH THE FAN AND IS DISCHARGED IN FOUR DIRECTIONS INTO THE ROOM PARALLEL TO THE CEILING TO CREATE A COANDA AIR FLOW PATTERN M1527A Fig 3 F90 operating sequence 68 0103 6 Revised 11 07 This sizing information in the following Examples 1 2 and 3 was generated using the ASHRAE Handbook of Fundamentals 1990 and the ASHRAE Standard 62 1989 Ventilation for Acceptable Indoor Quality These examples simplify the sizing procedure for most applications Use this information as a guide however keep in mind that the F90 has different capacities for each fan speed see Specifications section The number of air changes per hour determines the number of F90s needed More air changes per hour than indicated are unnecessary because the ASHRAE data from which these examples were constructed is conservative Fewer air changes per hour
34. t inside and outside of the grille and cover 2 Replace the activated carbon filters with new filters if needs replacement See Fig 16 3 Inspect the cells for broken ionizer wires and bent collector plates Bend moderately bent or warped collector plates back into shape Replace broken ionizer wires replaced for top efficiency as instructed on page 15 68 0103 6 Revised 11 07 14 Dwar Detergent Sa Carbon carbonblack soot lamp black graphite charcoal dust etc Cooking Oils Dishwasher Detergent Solution vegetable soybean peanut etc Steam Animal lard butter etc Dishwasher Detergent Solution High Pressure Water Dishwasher Detergent Solution Cotton Fibers Dishwasher Detergent Solution Dust silicon dioxie calcium carbonate and mineral type compounds Flour Dust Dishwasher Detergent Solution Mineral Oil petroleum base diesters and silicone Dishwasher Detergent Solution Dishwasher Detergent Solution High Pressure Water Paper Products Dishwasher Detergent Solution Paint Oil Base Dishwasher Detergent Solution Water Base Dishwasher Detergent Solution Dishwasher Detergent Solution Pine Tar Resins Steam Soaps Dishwasher Detergent Solution Sodium Chloride Dishwasher Detergent Solution Sugars Dishwasher Detergent Solution includes molasses etc Steam Diwas Detergent Son Tobacco Tars and Smoke Dishwasher Detergent Solution Dishwasher Detergent Son
35. the cells are removed grille is closed and F90 is turned on ADJUSTMENTS Louver Adjustment N CAUTION Do not operate air cleaner without the louvers installed The F90 plastic louvers can be repositioned to vary the airflow pattern Three positions are available Position 3 directs airflow along the ceiling Positions 2 and 1 direct airflow downward Use position 2 or 1 if ceiling staining is a problem or if beams or other obstacles disrupt airflow Louvers are shipped in position 1 Louvers can be adjusted as follows 1 Loosen screw by turning counterclockwise 2 1 2 turns Do not remove screw 2 Push louvers up to disengage bottom tabs and pull bottom of the louvers out slightly to desired position 3 Retighten the screw Assure that the tabs on the bottom of the louvers are positively engaged with the F90 frame SERVICE WARNING Sharp Edges Can cause personal injury Wear protective gloves and carefully handle the cells and prefilters to avoid cuts from the sharp metal edges collection plates and ionizer wires Steam Hot Water Strong Detergent Can cause personal injury Wear rubber gloves eye protection and rubber apron for protection from the strong cleaning chemicals and hot temperatures IMPORTANT The F90 and its components are susceptible to damage Be careful when working with them to avoid equipment damage Never use an acid base detergent to wash cells F90A B SELF CONTAINED COMMERCIAL ELECT
36. using lag screws in joist applications 9 68 0103 6 Revised 11 07 F90A B SELF CONTAINED COMMERCIAL ELECTRONIC AIR CLEANER 2 x 4 INCH 51 x 102 mm OR EQUIVALENT CROSS PIECE TO NUT AND WASHER SUPPORT AIR CLEANER TOP AND BOTTOM N NN ENN lt 1 4 INCH 6 mm DIAMETER THREADED ROD SUSPENDED CEILING 5 1 2 140 mm ee REMOVE CELLS AND FILTERS NUT AND WASHER VENTURI TOP AND BOTTOM PLATE M1534 Fig 9 Mounting the F90 using steel rods in suspended ceiling applications Mounting the F90A Using the 272577A Transition Plate Accessory The transition plate Fig 10 allows the F90 to be mounted by one person In the two step process the mounting plate is first secured directly to the ceiling joists Then the F90 is mounted to the transition plate Eight flanged locknuts four large four small and four 3 8 by 3 in 10 by 76 mm lag screws are provided with the transition plate The four large locknuts adjust the F90 height level the F90 and provide stops for the F90 top plate when tightened The four smaller locknuts secure the F90 to the ceiling joists 1 Screw a large height adjusting nut on each stud Assure that the large nut is screwed on with its flanged portion down 2 Position and level the height adjusting nuts so flanges are flush with the lag screw heads or the protruding threaded steel rods 3 Screw a small securing nut on each stud leaving a 1 2 in
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