Grizzly G9956 Filter Capacity, Mounting Preparation, Eye Bolts, Step, Tools Needed

Filter Capacity

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

Mounting

Preparation

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.

-12-

•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.

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.

Model G9956 (Mfg. since 12/09)