Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | [email protected] | www.krueger-hvac.com
Installation, Operation, & Maintenance for CRFF-E Series
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Installation
The CRFF-E Series Critical Room Fan Filter Units are completely assembled at the factory with the exception of the
optional ¼” (0.64 cm)-20 eyebolts, which can be used when hanging the unit from an overhead structure.
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 CRFF-ARS and CRFF-ARSM units, the HEPA filters may be shipped separately to be
installed into units after the fan box has been installed.
Recommendation: Review mode settings at this time as specified for installation (see page
7
for controls).
2.
If using rigidly supported grid (usually 2” or wider), raise unit through ceiling and lower onto the gasketed grid. If
using a flexible grid (typically supported with wires) the unit must be secured to an overhead structure with
eyebolts, s-hooks and chain. Screw the four eyebolts into the nutserts on the lid assembly before lifting into an
overhead position (see Figure 2)
3.
Have an electrician wire the unit to the appropriate voltage (115V, 220V, 277V AC), according to the wiring
diagram and all national and local electric codes. All units are equipped with a three position terminal block for
field connection. Verify correct single phase power, before energizing units.
4.
Turn on the power using the two position rocker switch (ON/OFF) located on the electrical box. For the CRFF-
ARS and CRFF-ARSM units, let the unit fur for a few hours to purge off particulate (if filters are shipped loose)
that may adhere 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.
EYEBOLT
FAN FILTER
UNIT
FIGURE 1 - UNBOXING
FIGURE 2 - HANGAR SUPPORTS
Summary of Contents for CRFF-E
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