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EXIT CONE (IPICEC) The exit cone (Figure 43) is designed to produce addi6onal gas velocity at the Grease Duct exit to help disperse the effluent. The opening of the cone is based on a ratio of 0.8 times the nominal pipe diameter. Since the exit cone is an open top termination, provision for ~ainage is recommended. An exit cone may be used for either vertical or horizontal discharge. FIG. 43 - EXIT CONE APPLY SEALANT MITER CUT pPICMC) The miter cut is intended for use as a tertnination for a hor¢ontai discharge. It is designed to minim¢e the entry of rainwater when installed in the proper orientation. Note that the miter cut is a single wall part and requires a clearance of 18" (45~ to combus6bles. The miter cut is equipped with a birdsaeen at the short side of the miter (see Fig. 44). The miter must be installed so that the long side of miter is on the top of the pipe to afford protection from rain. FIG. 44 - MITER CUT (IPICMC) CLOSUflEBAND ! BIRD SCREEN THROUGH-PENETRATION FIRESTOP SYSTEM When peneh~ating a fire-resistance related floor or wall, a Through- Penetration Firestop System is used to retain the fire resistance rating on the floor or walls. Use only the model PICPPK (SEE Figure 45). 1. Determine flue size of Grease Duct. 2. A circular hole that is 10" (254) c~eater than flue size, or 2.0 inches greater than duct O.D., is required in the masonry floor or wall. 3. Center the Model IPIC Series 4G Grease Duct wifhin the hole. The duct is to be properly suppated to maintain iocation. 4. Insert 31/2"(89) wide ceramic fiber provided. The fiber must encircle the outer casing of the grease duct and fill the cavity within 1/2"(13) of the floor (wal~ surface, Pack the fibe~ within the cavity, if required. 5. On the downstream side of the floor or wall, closest to the appliance, apply the caulk provided, P082 3M Part Number CP25W6+, to a depth of 1/2" (13) deep around the duct. NOTE: THE OPENING BETWEEN THE GREASE DUCT AND THE FLOOR {WALL) MUST BE CLOSED. 6. Apply caulk to a depth of 1/2" {13)from the upstream side, filling the caviiy. 7. Install two (2) halves of protector plate to the upstream side of the 8oor (walR. Secure with masonry hardware. NOTE: THE PROTECTOR PLATE HALVES ARE DESIGNED TO FIT AROUND THE CASING AND OVERLAP EACH OTHER BY 1/2° {13). 8. Posi6on the closure band around the casing, making sure that be- tween the closure band and the casing is the six 12° (30~ wide ce- ramic fiber provided. Secure the closure band. NOTE: THE CLOSURE BAND AND CERAMIC FIBER IS DESIGNED TO BE TOUCHING THE PROTECTOR PLATES AFTER INSTALLATION (See Fig. 4~. FIG. 45 - 3 HOUR F, 3 HOUR T, THROUGH PENETRATION FIRESTOP Closure Band 1' Ceiamic oA35' 7nick InsulaUon . 304 Sloinless Steel (8 PCF) Concrete (ntho~s T i l (4 P Proleclor P1ote yp co ) loces IPICPP 0.035' Thkk ~ Aluminized SteN ~ 1/~' Min. ' . .. . .. ~ CP25W8 Caulk 1/2~ De" " t~p peap X 7 ihick 1" Ceromic 1l19U1Ot~0l~ (8 PCF) Flue Oio. + t0' MAINTENANCE Grease duct is required by NFPA 96 and many local building codes to be inspected and cleaned if necessary at specific intenrals. Metal-Fab Model IPIC Grease Duct must be inspected and cleaned in accordance with local requirements. It requires no additional intemal maintenance. Metal-Fab recommends that grease containers connected to drainage points be emptied and washed out daily or more often, if necessary. If needed, the drain nipples should be checked and cleaned whenever the containers are emptied. Where the duct is installed outside the building, the alumin¢ed steel outer casing must be primed and painted. The paint surface should be maintained regularly to prevent possble deterioration of the casing surface. The use of stainless steel outer casing negates the need for painting. AUTOMATIC CLEANING An automatic hot wateddetergent cleaning system can be integrated into the IPIC Grease Duct by utilizing any of the specialized parts such as the Noale Section (IPICNS). All of the specialized parts have standard 1 inch diameter NPT coupling capabilities making attachment easy. The typical water tempurature for automatic cleaning system is 160 Deg. F. and the entire duct system can be scrubbed down daily for the removal of grease and dirt depending on the application. Automatic cleaning sys- tems should be connected to the correct hardware so that the the residues from the process are direcby piped to crains and not g~ease traps. NOTE: When solid fuel fired cooking appliances are vented with Model IPIC Grease Duct, creosote and grease may buildup on the inner pipe wall. This mixture can result in an unusually severe duct fire. To minimize fire hazard, the duct should be inspected weekly and any residue removed by cleaning. Additional requirements for solid fuel fired cooking appliances are outlined in NFPA 96. 16