AJ SSLFHFD-FFU-RF-MEA User manual

-These instructions cover fan filter unit models:
- SSLFHFD-FFU-RF-MEA (Motor/Electronics Accessible, room side access)
READ COMPLETELY AND SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE
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CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
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Critical operation conditions of the Fan Filter Unit
x
DO NOT TOUCH the HEPA filter media. Damage to filter media may void the filter warranty. The screen is to protect against accidental
contact with the filter. Never place objects on the filter. Always transport or lift the filter by its frame.
x
Prior to powering the unit, verify that it is wired to the correct power supply. The rating plate label located on the electrical box
shows the electrical data.
x
For replacement parts refer to the model number and serial number on the rating plate label located on the electrical box.
Replacement Part numbers
FFU-RP11 - 48 x 24 x 3.5" High-Flow HEPA filter
FFU-RP12 - 36 x 24 x 3.5" High FlowHEPA filter
FFU-RP13- 24 x 24 x 3.5" High Flow HEPA filter
FFU-RP14 - 14 x 14 x 3/8 Expanded aluminum pre-filter (2-ply)
FFU-RP21 - Variable speed motorized impeller (120 VAC)
FFU-RP22 -Variable speed motorized impeller (208, 240, 277 VAC)
FFU-RP31 - Main control board
FFU-RP32 - Airflow measure and display system
FFU-RP33 - Face control/display board (board only)
FFU-RP34 - 120 -- 24 VAC transformer
FFU-RP35 - 208/240 -- 24 VAC transformer
FFU-RP36 - 277 -- 24 VAC transformer
FFU-RP37 - Network power control circuit board
FFU-RP38 - PAO challenge system
FFU-RP39 - Safety shut-off switch
WHEN ORDERING REPLACEMENT PARTS, PLEASE INCLUDE UNIT MODEL & SERIAL NUMBER AND PO # IF AVAILABLE.
FPH-RP40 - Resetable fuse (8A up to 240 VAC)
FPH-RP41 - Fuse holder with fuse (5A @ 277 VAC)
FPH-RP42 - Cartridge fuse (5A @ 277 VAC)
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06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
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2 27 /
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DO NOT
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1:10
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CRITI-CLEAN ULTRA
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READ COMPLETELY AND SAVE THESE INSTRUCTIONS
WARNING - TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS,
ALLOW ONLY QUALIFIED TECHNICIANS TO INSTALL AND SERVICE THE UNIT. ALL
PERSONS SHOULD OBSERVE THE FOLLOWING:
a) Use this unit only in a manner intended by the manufacturer. If you have questions, contact the manufacturer.
b) Before servicing or cleaning unit, switch power off at the servicepanel and lock-out the service in accordance with OSHA (LOTO)
practices and procedures to prevent power from being accidentally switched on avoiding accidental electric shock and injury. When
the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.
x
Installation work and electrical wiring must be completed by qualified personnel in accordance with all applicable codes and
standards, to include fire-rated constructions.
x
When cutting or drilling into walls and ceilings, be careful not to damage electrical wiring and other hidden utilities.
x
If this unit is to be installed within close proximity to water, mark the unit in accordance with applicable codes and standards.
x
This unit is to be used only as intended by the manufacturer. If you have any questions regarding the use, installation, or
operation of this unit, contact the manufacturer:
AJ Manufacturing Co., Inc.
8701 Elmwood Avenue; Suite 400
Kansas City, MO 64132
Tel: [phone]
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06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
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3 27 /
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INSTALLATION CHECKLIST
This is to provide a general overview of what steps should be taken to achieve a successful installation of the fan
filter unit. These steps should be performed in the order listed. For more detail see applicable section in this instruction
manual. Read the entire manual before begining installation.
□
Prepare the installation site with appropriate power, data cabling, support structure, and openings as needed.
□
Unbox and inspect the fan filter unit.
□
Install the fan unit into the ceiling. Support its weight from structure above.
□
Connect ductwork to fan unit (if applicable).
□
Seal the fan filter unit to the ceiling using gasketing and caulking.
□
If the unit is to be ducted, set upstream air device to produce 0.0" W.C. static pressure at the fan unit inlet.
Use dampers if necessary if installing mutiple fan units on the same duct line.
□
Verify incoming power matches the rating plate then connect main power wiring.
□
Connect control wiring (if applicable).
□
Run the unit and/or upstream air device to flush out construction debris.
□
Install the pre-filter (if applicable).
□
Install the HEPA/ULPA filter.
□
Turn unit on and adjust airflow to design CFM.
□
Turn on the upstream airflow device.
□
Leak test the fan unit and filter per local codes and building procedures.
□
Calibrate airlow sensor, if equipped, to flow hood.
□
Install the perforated face screen.
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CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
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Hanger Tabs
Line Power
Knock Out
Main Control Board
Installation
The terminal unit is fully assembled from the factory with the exception
of the HEPA filter. Filter is shipped in a separate box.
Step 1 -- Carefully remove the unit from the shipping carton and inspect for
damage that may have occurred during shipping. If shipping damage is found,
do not install. Call the supplier to report damage.
Step 2 -- Wipe down unit to remove shipping dust and debris.
Step 3 -- Raise unit into position and secure using the hanger tabs. Alternately it can be secured
a framed opening through the frame if care is taken not to damage the knife edge and
all penetrations are sealed. Any gasket should be a closed-cell material approved for the
environmental conditions. Sealant used to seal the unit to the ceiling should be approved
for the application and conditions.
Step 4 -- A qualified technician should connect the unit to the appropriate power supply
per applicable codes and standards. Verify circuit and rating plate voltages
match. Refer to the wiring diagrams included in these instructions.
-FFU-RF-MEA units: the electrical box will be accessible from the room side.
SSLFHFD-FFU-120 --- 120 VAC SUPPLY,
2.8 FLA
SSLFHFD-FFU-208 --- 208 VAC SUPPLY,
2.6
FLA
SSLFHFD-FFU-240 --- 240 VAC SUPPLY, 2.3 FLA
SSLFHFD-FFU-277 --- 277 VAC SUPPLY, 1.9 FLA
Step 5 -- Blow out / clean entire duct system leading to unit to remove construction debris.
This is especially important for motor accessible units as they do not have a pre-filter.
Step 6 -- The unit should be run tested to maximum flow to verify ducts are clear and debris is
flushed. Control functions should be tested to verify setpoint can be changed and the fan
started and stopped in the intended manner.
Step 7 -- Install the HEPA filter per the “Removal and Replacement of the HEPA Filter
with Gel Seal” section.
NOTE: FOR DUCTED INSTALLATIONS, IT IS RECOMMENDED
THAT PRIMARY AIR BALANCING TO ACHIEVE 0.0"WC INLET
STATIC PRESSURE BE DONE BEFORE FAN FILTER UNIT IS
CONNECTED TO DUCT SYTEM.
NOTE: An additional disconnect should be added
by others per applicable codes and regulations.
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06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
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5 27 /
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A NOTE ABOUT VAV BOXES AND DUCTED APPLICATIONS
In applications where the fan filter unit will be installed downstream of variable airflow devices such as
VAV boxes, air valves, or variable air handlers, proper care in unit set-up needs to be taken.
In these applications the unit should not be programed to run as constant airflow when ordered with the Airflow Sensor.
Two variable controllers trying to reach their respective set point will continuously adjust. This will cause issues such as
surging, starving, and eventual shut down of the fan filter unit. In these applications the unit should be placed into
"open-loop" control by turning off the S1-1dip switch (see pict below). This will no longer keep constant airflow
automatically. It will also remove the dirty filter ramp-up feature and the HEPA-lert dirty filter indicator (if applicable) will
be set as a static timer of 4400 hours (about 6 months). The set point will now be a percentage of motor speed instead
of CFM but it will still display CFM during normal operation. The unit in this setting is still preferable to a PSC system due to
the energy efficiency of an ECM versus a PSC motor and all control options are still applicable.
DUCTED APPLICATIONS
If ordered with the Airflow Sensor option the condition immediately before the inlet can impact the CFM reading. Use
the "C" up and down arrows on the face control to calibrate the airflow sensor to match the balancer's flow hood to
insure accurate airflow control. This calibration is best done as near to the operating point as possible. Recalibration may
be required if the setpoint changes more than 25%. In extreme cases the inlet conditions may not be able to be
compensated for using the caliberation adjustment. In these cases CFM controlled opperation may have to be forfit
and the unit run in open-loop mode.
S1-1
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06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
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6 27 /
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Face Frame
Pre-Filter
HEPA/ULPA Filter
Reverse Flow Fan Filter Unit Pre-filter
The unit ships with a frameless disposable pre-filter between the face and the HEPA filter.
*It is Not recommended that this filter be washed or re-used.
Replacement filters are available from AJ Manufacturing.
NOMINAL UNIT SIZE PART NUMBER
48 x 24 U4A1
24 x 24 U4A2
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06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
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7 27 /
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Face Frame
HEPA/ULPA Filter
Quarter-Turn Fasteners
Pre-Filter
Filter
Retainer
Clips
Removal and Replacement of the HEPA Filter with Gel Seal
WARNING!
Disconnect the unit from the electrical power source before attempting to service the unit.
WARNING!
The HEPA filter may be protected by an expanded metal screen. The screen prevents accidental contact with the filter media.
It is not meant to allow handling of the filter by the media. Handle the filter ONLY by the frame.
NOTE: The manufacturer recommends two people to remove and install the HEPA filter in the unit.
Step 1 -- Using a flat screwdriver, release the face frame by rotating the fasteners a 1/4-turn counter clock-wise.
Unhook the safety cables from the filter clips. Set the frame aside.
Step 2 -- Turn the unit off with the switch located on the face of the unit (round, black button).
Step 3 -- Disconnect the unit at the power source or at the service panel in accordance with OSHA (LOTO)
practices and procedures.
Step 4 -- USE TWO PEOPLE TO SUPPORT THE FILTER and rotate the swingarm filter clips off of the filter until
clip is clear of the filter.
Step 4 ALT (if stud style filter clips) -- Using a 7/16” nut-driver, evenly loosen the nuts holding the filter retaining
clips by working your way around the unit loosening the nuts a little at a time. To make installing the new
filter easier, loosen the nuts until flush with the end of the threaded stud. USE TWO PEOPLE TO SUPPORT
THE FILTER and rotate the filter clips toward the offset hole until clip is clear of the filter.
Step 5 -- Allow gravity to pull the filter away from the unit. If installing a new filter discard the filter in an
appropriate manner.
Step 6 -- Unpack the new filter and inspect for shipping damage. If damage is found, do not install in unit; call the
vendor for replacement arrangements.
Step 7 -- Using two people, raise the filter into place in between the filter guides (or threaded posts if stud style) assuring the seal edge is
approximately in the center of the gel channel.
Step 8 -- While supporting the filter by its frame, rotate the filter clips so that the clips are supporting the frame
and are at 90° to the frame. (ALT--Evenly tighten the nuts by working your way around the unit tightening the nuts
a little at a time. Stop tightening when the aluminum filter frame contacts the stainless steel housing frame of the unit.
DO NOT OVER TIGHTEN
). Wait at least 30 minutes before performing any challenge testing to allow the
gel to fully adhere to the unit.
Step 9 -- Inspect all gaskets and seals for integrity. Reconnect power and turn unit power on.
Step 10 -- Raise the face frame back into place, reattach the safety chains, and secure 1/4-turn fasteners.
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06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
SHT
8 27 /
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Motor Bracket
Screws (x4)
Motorized
Impeller
Motor Mount Plate
Screws (x8)
Removal and Installation of the Variable Speed Motor
(SSLFHFD-FFU-RF-MEA)
WARNING!
Disconnect the unit from the electrical power source before attempting to service the unit.
Step 1 -- Using a flat screwdriver, release the face frame by rotating the fasteners a 1/4-turn
counter clockwise. Unhook the safety cables from the filter clips. Set the frame aside.
Step 2 -- Turn the unit off with the black button located on the face of the unit next to the display.
Step 3 -- Disconnect the unit at the power source or at the service panel in accordance with
OSHA (LOTO) practices and procedures.
Step 4 -- Remove the HEPA filter and set aside. See sections 2 and 3 for instructions.
Step 5 -- If equipped with an Airflow Sensor, make note of the plug into the sensor. Cut any zip-
ties holding the wire to the sensor bracket. Unplug the wire and move out of the way.
Step 6 -- Support the weight of the fan assembly and use a 7/16" driver to remove the eight (8)
motor mount plate screws.
Step 7 -- Carefully lower the motor assembly and disconnect the 3-pin power plug and the 4-pin
data plug.
Step 8 -- Remove the assembly from the uni. Remove the nuts holding the motor brackets to the
motor plate.
Step 9 -- Use a 4mm hex driver to remove the four (4) screws holding the motor brackets to the
motor.
Step 10 -- Reverse above steps to reassemble the motor/fan/ring assembly into the unit.
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06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
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9 27 /
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High Voltage
Terminal Block
Main Power Switch
Transformer
Main Control
Board
Fuse
Face Display
Access to Electrical Components
(SSLFHFD-FFU-RF-MEA)
WARNING!
Disconnect the unit from the electrical power source before attempting to service the unit.
-- Turn the unit off with the main power switch located on the electrical box.
-- Disconnect the unit at the power source or at the service panel in accordance with OSHA (LOTO)
practices and procedures.
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06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
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10 27/
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Removal of Main Control Board
WARNING!
Disconnect the unit from the electrical power source before attempting to service the unit.
Step 1 -- Access the unit's electrical box per instructions based on the model you have. (See page 10)
Step 2 -- Remove the two screws holding the control board face plate to the fan filter unit.
Step 3 -- If applicable, disconnect the CAT5e cables from RJ45 jacks on the front of the board.
Step 4 -- Disconnect the motor (red 4-pin plug) and the face control board (red 5-pin plug) from the
main control board by pulling the plug straight out from the board.
Step 5 -- Using a small blade screwdriver, disconnect power supply wires from the control board terminal block.
Step 6 -- To install a new board, repeat above steps in reverse order.
CONTROL BOARD
FACE PLATE
FACE DISPLAY/CONTROL
BOARD PLUG
MOTOR PLUG
POWER TERMINAL
BLOCK
RJ45 JACKS
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SSLFHFD-FFU-RF-MEA
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11 27/
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FACE FRAME INSTALLED
FACE FRAME REMOVED
Status LED Indicators
- YELLOW -- Unit Off
- GREEN -- Unit Running
- RED -- Filter Dirty (Optional)
START/STOP Switch
Setpoint Control
Numeric Display
Calibration Control
Blue light indicates local setpoint
NOTE: ON/OFF SWITCH AND
DIGITAL CONTROL ARE HIDDEN
WHEN FACE FRAME IS IN PLACE.
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SSLFHFD-FFU-RF-MEA
REV # F
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12 27/
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Low Voltage Electrical Panel
Fuse
Main Power Switch
High Voltage Electrical Panel
FUSE
Each fan filter is equipped with an 8 Amp resettable or 5 Amp cartridge fuse
to protect the unit from electrical spikes. The fuse is located in the electrical box
accessible behind the filter.
NOTE: Before servicing fuse, cut power to the unit at the disconnect. Turning off the
main power switch will not disconnect power from the fuse.
The cartidge fuse can be removed by turning the fuse holder counterclockwise a 1/4-turn.
Remove the fuse from the fuse holder and discard. Insert new fuse and replace fuse holder.
NOTE : 277VAC units have a 5 A cartridge fuse. Others have a 8 A resettable fuse.
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SSLFHFD-FFU-RF-MEA
REV # F
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13 27/
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CONTROLS
The fan filter unit can be controlled through various inputs:
1. Local setpoint control (blue light behind S will be lit on face display)
- Adjust airflow from the face. When adjusting the setpoint will be displayed and the four decimal points will be lit to indicate sepoint.
- Local setpoint, no face display. If not equipped with a face display and locally controlled, the POT on the EC Motor Control Board is used.
- To toggle between local control and external control hold the Start/Stop button for 10 seconds. When released the blue light with change.
2. Individual unit wall mounted control (must be determined before ordering)
3. 0 - 10V/0 - 5V DC Control
4. 0 - 20mA/4 - 20mA Control
5. Full range of network controls including connection to BAS/BMS through MODBUS RTU RS485 control
- BACNet IP, BACNet MS/TP, & LONWorks available with additional hardware
Additionally, monitoring and control of the FFU can be done through closed loop control from sensors such as
pressure transducers, thermostats, partical counters, etc.
This manual will give basic information on how to connect controls and sensors to the unit. For more details refer
to the instructions included with the controller or sensors.
SIGNAL BEHAVIOUR
The Network CFM Setpoint is read and written directly in units of CFM.
External analog signals are scaled to a minimum and maximum airflow when in CFM control mode.
IE: 0-5VDC 2.5VDC=0.5 of full range. = 0.5*unit maximum CFM.
When operated from an external setpoint or network value 0-10% is reserved for local over-ride of the EC Moctor Control board POT so the unit can be
adjusted from the main control board. 10%-20% is reservered for the remote Off Signal.
INP1/ANA1 Input Control Function: % of Input Range
Range Units
ECM Control Pot
0-10%
Remote Off
10-20%
External Setpoint
20-100%
0-5 Volts 0 to 0.5 0.5 to 1.0 1.0 to 5.0
0-10 Volts 0 to 1.0 1.0 to 2.0 2.0 to 10.0
0-20 mA o to 2.0 2.0 to 4.0 2.0 to 20.0
4-20 mA 0 to 5.6 5.6 to 7.2 7.2 to 20.0
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SSLFHFD-FFU-RF-MEA
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14 27/
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NETWORKING
When networking the fan filter units either in a local area network (LAN) or connecting to
a BAS/BMS system, each unit is connected in a "straight-through" daisy-chain using Cat5e or
Cat6 network cables and the on-board RJ45 connectors.
If field cutting network cables, it is important for each end of the cable to be wired identically.
However, assembled network cable are available; field assembled cables are the leading
cause of problems in new systems.
ACC1001 control used
as an example. Other
controller options
available.
Power to the controller is
supplied through a wall
AC adapter supplied with
the controller.
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SSLFHFD-FFU-RF-MEA
REV # F
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15 27/
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1
2
3 4 5 6
7
10 9 8
1. RJ45 Dual Jacks
2. Modbus Address DIP Switches
3. S1-1 and S1-2 Configuration DIP Switches
4. STATUS LED
5. NET LED (network activity)
6. FAULT LED
7. Mulitmeter Common
8. Multimeter Setpoint as mVDC
9. Multimeter CFM as mVDC
10. Onboard Setpoint Potentiometer
M
K
L
J
H G F E D C B A
N
A. JPS: Bias input power, isolated
B. JP2: Accessory output voltages
C. JVDC: Selector for 10V regulated or unregulated
rectified and filtered bus voltage
D. J1: EC Motor Port
E. JVS-1: INP1 10V signal range selector
F. JP1: INP1 and INP2 analog/digital inputs
G. JVS-2: INP2 10V signal range selector
H. JLED: External FAULT output
J. JPUD2: INP2 digital input pull-up or 20mA signal
format selector
K. JPUD1: INP1 digital input pull-up or 20mA signal
format selector
L. JP420: 0-20mA or 4-20mA signal format selector
M. JFBS: TACH or Analog 2 feedback signal selector
N. Aux Board Port
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SSLFHFD-FFU-RF-MEA
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16 27/
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NETWORKING
DIP SWITCH SETTINGS
Each fan filter unit in a network must be set to a unique address between 1 and 247.
Addresses 248- 255 are declared reserved per MODBUS protocol. A DIP switch block
of eight switches are used for addressing. The control board supports Modbus Broadcast
Address Zero for single and multiple register write commands (Modbus Function Codes 6 and 16).
Address settings are checked by the board controller only at power-up,
so power must be cycled before any changes take effect.
Analog input setpoint modes preserve the ability to monitor and modify register
values using a suitable controller console or PLC.
Therefore, addressing may be relevant for configuration, monitoring and/or troubleshooting
even when units are intended to be used with analog setpoint input.
Address Selection
When adjusted to the ON position, each DIP switch pole represents a value as follows:
Calculate the address value of existing switch settings
by adding the values of each DIP switch pole in the ON
position, per the table at left.
Construct switch settings for a desired address value by
successively subtracting the largest pole value that is less
than the desired address value, repeating with each
remainder until the remainder is zero. An example is provided
below.
Example: Desired address is 114
114 - 64 = 50 SW1-7 ON
50 - 32 = 18 SW1-6 ON
18 - 16 = 2 SW1-5 ON
2 - 2 = 0 SW1-2 ON
64+32+16+2 = 114
*See page 26 for more
examples
DIP Switch Pole Value
1 1
2 2
3 4
4 8
5 16
6 32
7 64
8 128
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SSLFHFD-FFU-RF-MEA
REV # F
SHT
17 27/
SCL
DO NOT
SCALE
1:10
STAINLESS STEEL
CRITI-CLEAN ULTRA
REVERSE FLOW - FAN FILTER UNITS

CONFIGURATION DIP SWITCHES S1-1 & S1-2
Open-Loop -- Fan filter unit is controlled by a controller, i.e. on-board potentiometer or
network controller.
Closed-Loop -- A sensor is used to maintain airflow, i.e. room pressure, roomtemp, or a
particle counter.
Analog Setpoint -- Unit is controlled with an analog contoller, i.e. on-board potentiometer or individual wall mounted
controller (must be determined before ordering)
Network Setpoint -- Unit is controlled with a networked controller, i.e. ACC1 or ACM7052 touchscreen controller
*Leave shunt out if using
a 0-20mA or 4-20mA sensor.
SENSOR SHUNT TABLES
Shunt Table for JP1 wiring block
Shunt Table for JP2 wiring block
NOTES:
- JP1 is for signal input
- JP2 is for output power
- connect COM/5V --> 5V power supplied
- connect COM/VSEL with 10V shunt -->
10V power supplied
- connect COM/VSEL with V.RFU shunt -->
Full wave rectified power supplied
(~33VDC)
- INP1 on JP1 wiring block is for monitoring only
- 0 - 10VDC
- 0 - 5VDC
- 0 - 20mA
- 4 - 20mA
- INP2 on JP1 wiring block is for closed-loop
feedbackor monitoring
- Controling airflow by room pressure
or particle counter
Switch
S1-1 S1-2
Control Loop Mode Setpoint Source
OFF Open-Loop Control Analog Setpoint
ON Closed-Loop Control Network Setpoint
Shunt JP420 JFBS JVS-1* JVS-2*
OUT 0 - 20mA ANALOG 0 - 5VDC 0 - 5VDC
IN 4 - 20mA N/A 0 - 10VDC 0 - 10VDC
Center Pin to... JPUD1:INP1 JPUD2:INP2
No connection ANALOG 5V or 10V ANALOG 5V or 10V
20mA ANALOG 20mA ANALOG 20mA
+5V PU DIGITAL 10kΩ pull-up TO 5V DIGITAL 10kΩ pull-up TO 5V
Center Pin to... JVDC
No Connection VSEL = no connection; open
10V VSEL = 10V regulated
V.RFU VSEL = DC filtered, unregulated, ~33VDC
DRAWING NAME
DRAWN CATEGORY
CHKD
APRVD
PRODUCT
SIZE
TAG QTY
BRS/SLG
06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
SHT
18 27/
SCL
DO NOT
SCALE
1:10
STAINLESS STEEL
CRITI-CLEAN ULTRA
REVERSE FLOW - FAN FILTER UNITS

AIRFLOW SENSOR WIRING
RED WIRE FROM SENSOR TO INP2
WHITE WIRE FROM SENSOR TO COM
BLACK WIRE FROM SENSOR TO 5V
SHUNT INP2 CFG FROM CENTER PIN TO +5V PU
Switch
S1-1 S1-2
Control Loop Mode Setpoint Source
OFF Open-Loop Control Analog Setpoint
ON Closed-Loop Control Network Setpoint
DRAWING NAME
DRAWN CATEGORY
CHKD
APRVD
PRODUCT
SIZE
TAG QTY
BRS/SLG
06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
SHT
19 27/
SCL
DO NOT
SCALE
1:10
STAINLESS STEEL
CRITI-CLEAN ULTRA
REVERSE FLOW - FAN FILTER UNITS

WIRING A REMOTE MOUNTED POT
TO CONTROL BOARD
DRAWING NAME
DRAWN CATEGORY
CHKD
APRVD
PRODUCT
SIZE
TAG QTY
BRS/SLG
06/13/22
CRITI-CLEAN ULTRA INSTALLATION MANUAL
SSLFHFD-FFU-RF-MEA
REV # F
SHT
20 27/
SCL
DO NOT
SCALE
1:10
STAINLESS STEEL
CRITI-CLEAN ULTRA
REVERSE FLOW - FAN FILTER UNITS