Grizzly G9956 - Manual (Page 11)

G9956 Heavy-Duty Hanging Air Filter -9-
• The double air filter must be supported by
joists when hanging. These joists should be
capable of supporting at least 150 lbs. DO
NOT attach the double air filter to sheet rock,
press board or paneling. These cannot sup-
port the filter and it may fall.
• To avoid hitting your head on the double air
filter, make sure there is enough clearance
between the unit and the ground (at least
seven feet). This is especially important in a
basement. If possible, position the air filter in
an area that has little or no foot traffic but still
offers easy access to the switch and filters.
-9- G9956 Heavy-Duty Double Air Filter
The G9956 Heavy-Duty Double Air Filter is
designed to recirculate the entire volume of air
in a 20' x 20' x 8' room approximately 26 times
in one hour. For the best filtering effect, the vol-
ume in a room should be recirculated at least 6-8
times every hour.
To calculate the recirculating rate for a given
volume:
Step 1. Calculate, how long it takes to circulate all
the volume of air in a room with the double air fil-
ter; where W = Width, L = Length and H = Height
of your room, in feet. The rate of air movement for
the air filter is 1400 cubic feet per minute.
W' x L' x H' = Minutes for circulating 1 time
1400
Step 2. Calculate how many times per hour the
volume is recirculated through the double air filter
by dividing 60 minutes by the amount of time it
takes to circulate the volume once. The result is
listed as times per hour.
Step 1: 20' x 20' x 8' = 5000 = 2.28 Minutes
1400 1400
Step 2: 60 = 26.3 Times per Hour
2.28
Filter Capacity
It is very important that the double air filter is
supported properly. Please use these guidelines
when preparing to mount the unit.
• For the sake of clarity, the surface where the
eyebolts attach will be called the top through-
out the manual.
• Make sure that an electrical outlet with a
properly grounded receptacle is available at
your location of choice.
Mounting
Preparation
Eye Bolts
Components and Hardware Needed Qty
Eye bolts ........................................................... 4
Hex Nuts
1 ⁄
4
"-20 ................................................. 4
Tools Needed
Wrench 12mm ...................................................1
To attach the eye bolts:
1. If the nuts are not already on the eye bolts,
thread one onto each eye.
2. Thread one eye bolt into each hole on the top
of the double air filter. Use as much of the
available thread as possible.
3. Tighten the nuts on each eye bolt until the
eyes will not move by hand. DO NOT over
tighten.