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6. Outer jacket must move during expansion or contraction. Ensure that no screws are located where the jacket overlaps the casing of the adjacent pipe and that it is loose enough to move as needed. 7. Alignment of the bead on the jacket with the bead on the adjacent pipe to ensure that the jacket stays in the proper location. 8. Note that the expansion joint will not support any weight in the vertical position. It should not be uniess both end of run, where an expansion joint is installed, are anchored as fixed points. FIG. 14 - EXPANSION JOINT LOCATION ~ICTCN ~90Y !~ OOD INSTALLATION PROCEDURE IS AS FOLLOWS: 1. Loosen draw screw at collar and slide collar toward flanged end of tube. Do not remove collar from tube. 2. Slide unflanged end of tube into the upstream piece of pipe. Pull flanged end of tube to the downstream piece of pipe and make up joint as outlined under PIPE AND FITTING ASSEMBLY on Page 3. 3. Apply a thin coat of sealant, about 1" (25) wide at the plain end of the pipe where tube siides into mating pipe section. Press sealant into any gap between the tube and the mating pipe section. Appiy sea~ant to flange of mating pipe (see Fig. 15). 4. Slide coliar into position against flange of mating pipe. Fili Flange band with sealant and instail flange band. 5. Tighten bolts on clamp collar to complete instailation. (For more positive seal, appiy sealant to clamp coliar siot and flared end of collar prior to Gghtening bolts). 6. Cut insulation to desired length and wrap inner pipe ensuring that it is covered completely before attaching half jackets. 7. Wrap two half jackets around joint with bead at the downstream end and punched edge that overlap the plain edge by approximately 3/4" (19). Note: For horizontal installations, the seams must be located at the top and bottom of the pipe. Coat unpunched edge of casing with P077 sealant to waterproof the casing. Instail self-drilling screws (supplied with jacket) at punched holed through both layers at overlap. Exercise care that haif jacket edges do not align with draw screws on flange bands, and that no screws are instalied in portion of jacket which is over casing of adjacent pieces of pipe (see Fig. i6). The screNrs shipped with the expansion joint are of the correct length to avoid penetrating the inner wall (flue) of the pipe. Do not use any other screws to attach the casing. VARIABLE LENGTN (IPiCVL) The function of the variable length is to make up odd lengths of pipe, which are not to be used for expansion compensation. The variable length is comprised of the following components: (1) a 3Y." (83) collar with a Flange at one end used to clamp the flange at the desired length; (2) a 30" {762) long tube flanged at one end, which fits into the 3Y4' (83) collar; (3) an outer jacket consisting of two half jacket assemblies; and (4) loose insulation blanket to fill space between the tube and casing. FIG. 16 - VARIABLE LEiVGTH CASING ASSEMBLY HALF JACKEi /~\ \\ ~ ~ ~ ~ ~ 1 ~- --------- - , - I - - ,- ~--~- ~- o- - / ~ / 3'~ A variable length can be installed at any flange to flange length from 4"-26" SCftEWS \~~~ "91 (102-660). if the flue is too long to fit into the adjacent section of pipe IINCLUDED) I without intertering with the flow path, it should be trimmed to the desired flange to flange length plus 4" (102). NOTES: 1. It is recommended that the pipe adjacent to the variable length is supported or guided to prevent sagging. 2. If a variabie length must be installed adjacent to a tee, elbow, wye or other fitting where tube can interfere with flow, the unflanged end of the tube should be away from the fitting and fitted into a pipe length in the manner described in the installafion procedure under Fig. 15. TAPERED INCREASER (IPICTI) Frequently, a diameter change is required in a Grease Duct instailation. To accomplish such a s¢e change, a tapered incFeaser may be used. The tapered increaser uses 5 inches of length per incremental diameter change. The maximum length for a tapered increaser is 30" (762) or 6 pipe s¢es. A tapered increaser is considered to have the same load strength as straight pipe (see Fig. 17). z ~ ~ D ~' ~ APPL. FIG. 15 - VARIABLE LENGTH FLUE ASSEMBLY ~ 30" 1762) OFi TRIM TO FIT ---~--~~