FloAire PCU Filtration - Manual (Page 5)

5
LISTINGS
This pollution control unit (PCU) is ETL listed to standard UL-710, CAN/ULC-S646, CAN/ULC-S647 when
installed in accordance with these installation instructions and National Fire Protection Association
Standard “NFPA 96, Standard for Ventilation Control and Fire Protection of Commercial Cooking
Operations.”
APPLICATION
The listed pollution control unit is suitable for use in commercial cooking installations for the removal of
smoke and grease laden vapors.
Grease duct installations require provisions for cleaning the interior of the duct. NFPA 96 cleanout
requirements are as follows:
1. A cleanout must be provided at each change of direction except where the entire length of duct
can be inspected and cleaned from either the hood or the discharge end.
2. On horizontal duct runs, at least one (1) 20” diameter opening must be provided. Where the
opening is smaller than 20” diameter, openings large enough to permit cleaning must be provided
at intervals of no more than 12’.
3. Openings in the duct must be at the side or the top, whichever is more accessible. When the
opening is on the side of the duct, the lower edge of the opening must be at least 1 ½” above the
bottom of the duct. For listed grease duct, this is accomplished by the use of the grease manifold
tee and cleanout cap.
4. On vertical duct runs where personnel entry is possible, access must be from the top of the riser.
Where entry is not possible, access must be provided at each floor.
NOTE: ACCESS REQUIREMENTS ARE SUBJECT TO CHANGE IN ACCORDANCE WITH LOCAL
CODE. LOCAL AUTHORITIES SHOULD BE CONSULTED FOR EXACT REQUIREMENTS. GREASE
DUCT MAY BE CONNECTED ONLY TO HOODS IN A SINGLE FIRE ZONE ON ONE FLOOR. DO
NOT CONNECT GREASE DUCTS TO ANY OTHER PART OF THE BUILDING VENTILATION OR
EXHAUST SYSTEM.
A grease fire can burn at extremely high temperatures. This system should be dismantled and inspected
after any exposure to a grease fire. Any section that is distorted or discolored should be replaced. All
joints in the system should be examined. Because the sealant expands to assure a positive seal in the
case of a fire, any sealant that has been exposed to high temperature must be replaced. This will ensure
that the system maintains its integrity against fire conditions in the future. The manufacturer of this PCU
cannot be responsible for grease duct systems that are not properly maintained or have been subjected
to one or more grease fires. Warranty and listing is void in a fire situation without consulting factory.
Grease duct systems size and capacity information may be obtained from the “ASHRAE Handbook –
Fundamentals” or from the “Air Pollution Engineering Manual” of the “US Environmental Protection
Agency.” Refer to the grease duct systems catalog for descriptions and dimensional data of parts.