Titus FFD, FFDR, FFDRA User Manual
INSTALLATION & OPERATION MANUAL
Fan Filter Unit
FFD, FFDR, & FFDRA Models
INSTALLATION & OPERATION MANUAL
Table of Contents
Fan Filter Unit IOM
FFD, FFDR, FFDRA Models
Critical Operations of the Fan Filter Unit .......................................................................... 3
Warnings ................................................................................................................................. 3
Installation.............................................................................................................................4
ON/OFF Switch - Speed/Airflow Adjustment ....................................................................5
Troubleshooting.................................................................................................................6
Pre-filter Cleaning (foam) ..................................................................................................7
Service: Removal and Replacement of FFD Filters.............................................................8
Service: Removal and Replacement of Roomside Replaceable Filters ............................9
Service: FFD and FFDR Motor Removal and Installation .................................................10
Service: FFDRA Motor Removal and Installation .............................................................11
Unit Wiring Diagrams .......................................................................................................12
Unit Replacement Parts List ..............................................................................................13
Drawing - FFD Filter ..........................................................................................................14
Drawing - FFDR & FFDRAFilter .........................................................................................15
Testing...............................................................................................................................16
Installation & Operation
Fan Filter Unit IOM
FFD, FFDR, FFDRA Models
INSTALLATION & OPERATION MANUAL
Critical Operation Conditions of FFD, FFDR, & FFDRA models
1. Touching of the HEPA filter will damage it, voiding the warranty on the filter. The screen is only to protect against an
accidental ‘touch’ of the filter. Never place a hand or tool on the filter. Never lie filter face flat down on a surface always
have filter on its side to protect from damage.
2. Prior to powering the unit, verify voltage on label and that the unit has been wired into the correct voltage. The serial
number label on the top of the unit has the required voltage.
3. To insure you order the proper replacement parts or complete unit, record the part number and serial number. This
information is located on the serial number label, located adjacent to the electrical box. If you can’t locate the Sales Order
Number, please contact Titus for this information. Once obtained, record the information for reference.
Warning
TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
A. Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes and
standards, including fire-rated construction.
B. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
C. If this unit is to be installed over an area using liquid, such as water or chemical cleaning solutions, it must be marked as
appropriate for the application.
D. Use this unit only in the manner intended by the manufacturer. If you have any questions, contact the manufacturer.
E. Before servicing or cleaning the unit, switch power off at unit service panel and lock service panel to prevent power from
being switched on accidentally.
Installation & Operation
3
Fan Filter Unit IOM
FFD, FFDR, FFDRA Models
INSTALLATION & OPERATION MANUAL
Installation
Note: Titus fan filter units are completely assembled at the factory with the exception of the optional ¼”-20 eyebolts
that are used when hanging the unit from an engineered design support system and installation of the HEPA/ULPA filters
(eyebolts not included and can be ordered separately, p/n 222449-001).
Step 1. Carefully remove the unit from the shipping carton and inspect for any damage that may have occurred during
transportation (See Figure 1).
Note: When ordering FFDR and
FFDRA units, the HEPA filters may
be shipped separately to be installed
into units after the fan box has been
installed.
Figure 1: Unboxing
If using rigidly supported grid (usually 2” (50 mm) or wider), raise unit through ceiling and lower onto the gasketed grid.
Step 2.
If using a flexible grid (typically supported with wires), the unit must be secured to an engineered design support system
with s-hooks and chain. Screw the four eyebolts into the nutserts on the lid assembly before lifting into an overhead position
(see Figure 2) Note: Confirm fan dimensions to match T-grid dimensions.
EYEBOLT
FAN FILTER
UNIT
Figure 2: Hanger Supports
Step 3. Raise the unit and secure it into place using the chosen support system method suspended from a structural support
bracing.
Step 4. Have an electrician wire the unit to the appropriate voltage, according to the wiring diagram (page 17), and all national
and local electrical codes. All units are equipped with a three position terminal block for field onnection. Verify correct singlephase
power, before energizing units.
Step 5. Turn on the power using the two position rocker switch (ON/OFF) located on the electrical box. For FFDR and
FFDRA units, let the unit run for a few hours to purge off particulate (if filters are shipped loose) that may be adhered to
the inside of the unit before installing the filters. Do not run fan at full speed as this may cause overload condition.
Note: Your fan filter may have been shipped separate. Controls have been shipped separately.
Installation & Operation
4
INSTALLATION & OPERATION MANUAL
ON/OFF Switch - Speed/Airflow Adjustment
All units are equipped with a speed control enabling adjustment of airflow at any setting
within the recommended performance range. The speed control knob is located on the
side of the electrical box, adjacent to the on/off switch.
Fan Filter Unit IOM
FFD, FFDR, FFDRA Models
ON/OFF SwitchElectrical EntranceSpeed Control
Speed Control Adjustment
Airflow/speed is adjusted by rotating the knob (See figure above):
Clockwise Lowers the speed
Counter-Clockwise Increases the speed
Fully rotating the speed control knob to the left or counter-clockwise will turn the unit off.
Note : When turning the unit “ON” from the “OFF” position of the speed control, the fan
is at the highest speed. Turning the speed control knob clockwise will lower the airflow.
Optional Speed Control
For units equipped with a three-position rotary switch, it is located on the side of the
electrical box. (See figure below)
Recommended fan speed during initial start-up and operation is the “LOW” speed. As
airflow eventually decreases due to filter loading, fan speed may be increased by
moving the rocker switch to the top or “MEDIUM” position, and finally to the “HIGH”
position. Periodic airflow velocity readings (per IEST Reccommended Practices)
should be conducted to determine the filter condition and appropriate fan speed
setting.
ON/OFF SwitchElectrical Entrance3-Speed Switch
Installation & Operation
5
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