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FIG. 39 - ROOF FRAMING FOR VENTILATED THIMBLE ASSEMBLY OR ROOF SUPPORT ASSEMBLY '10+14' (366~' The roof opening is sized as a flat projection (see FIG. 39) to provide the correct clearance. The thimble is centered in the roof hole with the iwo pivo6ng brackets oriented parallel to the roof ridge and the hinged brackets running up and down the roof. The lxackets are secured to the roof with bolts, lag screws or wel~ing as appropriate. Leave the bolts of the sliding mount loose un61 fhe brackets are attached to the roof. Then 6ghten all bolts and nuts. Ir~stall the flashing centered on the thimble. Secure it to the roof and seal it to the roof inembrane as appropriate. NOTE: The flashing pitch is faed, specify required pitch rate with order. FIG. 40 illustrates details of the pitched roof penetra6on component installation. FIG. 40 - VARIASLE PITCH ROOF PENETRATION INSTALLATION PIPE O.D. STORM COLLAA PRCHED FLASHING VERTICAL OR LATERAL SUPPORT RING HINGED BRACKET PIVOTING BRACKET THIMBLE LATERAL SUPPORT RING FLASHING (IPICF) VARIABLE PITCH FLASHING iIPICVPF) AND STORM COLLAR (IPICSC) Flashings, both standard and pitched, are intended for installation on non-combustible roofs only. The flashing is non-ventilated and does not provide for any reduced clearance to combustibles. To instali the flashing, place it around the Grease Duct. Secure and seal it to the roof FIG. 41 FIG. 41 - INSTALLATION OF FLASHING AND . STORM COLLAR SEALqNT FLANGE BAND 5fORM COLLAR DO NOT RESTRlCT VERTICAL MOVEMENT TALL CONE OF FLANGE BAND \ FLASHING CUflB ~ 18 GA. PAN PLATE SUPPORT MAINTAIN AOEWATE STRUCTURAL FFIAME EXPANSION DISTANCE With the flashing in place, the storm collar is placed around the Grease Duct and sealed to the casing with P077 Grease Duct Sealant. The storm collar should not quite rest on the flashing when the Grease Duct is cold (1/4" gap beiween the collar and the top of the flashing). When a Grease Duct is installed with a flashing and collar rather than a ventilated thimble, the Grease Duct must be stabiiized by installiag either a full angle ring or a plate support just below the roof. If the Grease Duct height above the plate suppo~t or full angle ring exceeds the "B" dimension in Table 5, it must be guyed to avoid wind damage. CHIMNEY TERMINATIONS CLOSURE RING (IPICCR) The closure ring FIG. 42 is the simplest method of terminating a Grease Duct. lt provides protection of the annular space between the inner and outer walls and leaves the top of the Grease Duct open to the elements. A drain section (or tee with drain tee cap) should always be installed when a closure ring is used as a termina6on. The closure ring is installed on the inner wall and overlaps the outer wall. The joint at the inner wall should be sealed with P080 Grease Duct sealant. A closure ring may be used for either vertical or hor¢ontal discharge. APPLV SEALANT 15 FIG. 42 - TACK CLOSURE RIN~