MicroMetl INSTALLATION INSTRUCTIONS / BAYCURB042A Roofcurbs & Concentric Transition/Adaptor Pkg. INSTRUCTIONS:

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1 MicroMetl INSTALLATION INSTRUCTIONS 0572 / BAYCURB042A Roofcurbs & Concentric Transition/Adaptor Pkg. MicroMetl accessories simplify and minimize installation procedures on rooftop applications. Read these instructions completely before beginning. These installation instructions pertain to the 0572 series roofcurbs, the corresponding concentric package, ducts and diffusers. Care must be exercised in locating the unit's roofcurb and roof opening. The HVAC system should cross enough roof supports to safely distribute the system's weight over the roof. END ILL.#1 INSTRUCTIONS: 1. Unpackage curb and locate all parts. 2. Bring together (1) curb side and (1) curb end. Insert tabs on curb end into slots on curb side. Press together until tab locks in place. It may be necessary to firmly step on top of curb end to lock tab in place. Repeat for all (4) corners. 3. If lifting curb after it has been assembled, hammer all corner tabs over to side. 4. Install (3) long supports on duct end of curb (see next page for dimensions). Now install (2) shorter duct support. 5. Install (2) deck pans on compressor end of curb. 6. Square up curb by measuring diagonally across curb corners. Set curb in place over roof opening. SIDE 7. Manufacture duct and drop onto curb. Install gasketing around top perimeter of curb and around top duct flanges. Pre-punched holes Screws Illustration #3 Support detail curb side support (3) Req'd. Illustration #4 MicroMetl Indianapolis MMC-HVAC MicroMetl 1675 WestCrane Way Sparks, NV Indianapolis, IN Sparks, Nevada Manufacturer reserves the right to discontinue, or change at any time, specifications, designs and prices without notice and without incurring obligations. Form No P Copyright MicroMetl Corporation All rights reserved.

2 0572 Roofcurbs Deck Pans (2) Blocked top corners C D E Supply H 1 1/ G F A B Long supports Roofcurb Specifications (in inches) M icrometl Part No. Trane Curb No. A B C D E F G H 0572A-014A BAYCURB042 A 0572A-018A N/ A 61.76" " 8.38" 16.70" A-024A N/ A " 18.88" Flex duct concentric packages adaptor 14 3/16" 24 3/4" 16 3/8" 21" Supply adaptor Relocate this support to accept supply adaptor. Flex Type Concentric package consists of Concentric Adaptor and Diffuser package MicroMetl 0572 Series roofcurbs. BAYCURB042 Concentric Adaptor / Diffuser Package P/N A A Description Flush mount diffuser and concentric adaptor Drop diffuser and concentric adaptor Optional Flex Duct package. 48" long sections. Diffuser package. Hanging clips. 23 3/4" 47 3/4" 2

3 ADJUSTABLE PITCH / ADJUSTABLE HEIGHT CURBS INSTRUCTIONS This MicroMetl Adjustable Pitch Curb is for roofs with pitches up to 1" in Unpackage roofcurb. Separate parts for top section, bottom section and decks / supports. 2. Bottom section: Assemble the (2) sides and (2) ends. The attachment flanges on the ends go to the inside of the sides. 14" 61.76" Top Section Use (2) 3/4" long tek screws in each corner to assemble. The screws are inserted from outside the curb inwards. 3. Top section: Assemble the (2) sides and (2) ends. The attachment flanges on the ends go to the inside of the sides. 61.5" Bottom 6.5" Use (3) 3/4" tek screws in each corner to assemble. The top screw will go into the wood nailer. The screws are inserted from inside the curb outward. Figure Install the deck pans and duct supports to the top of the top section. See Figure 2. Gasket the top 1 1/ perimeter and around the duct openings. 1 1/ 18.88" 16.70" 8.38" 14.55" Supply Figure 2 Top Section 25.18" Bottom Section 3

4 ADJUSTABLE PITCH / ADJUSTABLE HEIGHT CURBS (CONT.) 5. Locate the bottom section assembly over the roof openings. The roof opening sizes listed n the HVAC unit specifications are appropriate (unless using a hard duct type concentric diffuser package). Secure the bottom section to the roof. Pre-punched hole Top Section Roof 6. Slide the top section over the bottom section. Level the top section and prop-up in place. NOTE: This curb can be used on roofs with a pitch up to 1" in 1. If curb is pitched on the short side, the roof pitch can be even greater. Top Section Bottom Section Figure 3 7. Through the pre-punched holes along the bottom base of the top section, insert 3/4" tek screws. This will secure the top section to the bottom section. The pre-punched holes are 6" apart. It is important that you install the screws through every hole. 3/4" Tek Screw Bottom Section 8. Roof in the curb according to the local or other appropriate codes. 9. Manufacture the supply and return duct according to the dimensions shown in Table 2. Figure 4 Detail 4

5 Hard duct concentric instructions: 1. Follow roofcurb installation instructions. Do not install duct supports as they will not be used. Also, do not install deck pans until concentric adaptors have been installed. 2. Assemble the supply pan assembly, per ILL. 6. Install the supply pan assembly into the curb. Supply pan will set all the way at the bottom of the curb, see ILL. 7 & 9. Screw pan assembly to curb. 3. Assemble the return transition. NOTE: Insulation is on the inside. See ILL. 5. Install return transition into roofcurb, ILL. 8 & 9. Top of transition will hang from top of curb. 4. Duct kits may be field-cut to length, as required. 5. Secure return air duct to return air collar on diffuser. Secure supply air duct to supply air collar on diffuser 6. Hoist diffuser/duct assembly into position and support as shown in Fig. 3 (on page 4). Attach duct kit to transition assembly. Tape and caulk as required. See page 4 for hanging details. 7. Install gasketing on roofcurb and set unit in place. Hard duct type concentric packages Hard Duct Type Concentric Transition package (Includes both the return and supply air transitions, sheet metal duct kit and concentric diffuser grille). transition 14 5/8" RETURN TRANSITION ILL. 5 ILL. 7 Supply pan 37 3/16" 14" 8 11/16" 32 1/16" 37 3/16" Knock-down roofcurb 61 1/ Air duct 8 7/8" x 32 1/4" 42 5/8" 18 5/8" 16 1/4" IMPORTANT NOTE: To accommodate hard duct concentric package, roof opening must be 20" x 44". SUPPLY PAN ILL. 6 Insulated Sheet Metal Duct Kit Flush mount Concentric Diffuser Grille (part of 7903 series package) Drop Concentric Diffuser Grille (part of 7918 series package) 48" 23 3/4" 47 3/4" Supply Air duct 18 7/8" x 42 7/8" 47 3/4" 23 3/4" 5

6 Hard type duct package assembly & details 37 1/8" 14 5/8" Curb Deck pans Roof curb transition 61 17/3 Supply pan Roofcurb 5" 8 11/16" 5" 5 1/4" 32 1/16" 5 1/4" 18 5/8" 42 5/8" END VIEW ILL. 8 Supply air air SIDE VIEW ILL. 9 FLUSH MOUNT DIFFUSER / DUCT AND SUPPORT DETAIL (7903 package) Drop diffuser / duct and support detail (7918 package) Duct kit * Threaded rod * Tape seams * Bracket * Washer & nut * Drop diffuser grille * Field supplied BRACKET DETAIL MMC West MMC Indianapolis, IN Sparks, NV Manufacturer reserves the right to discontinue, or change at any time, specifications, designs and prices without notice and without incurring obligations. Form No P Copyright MicroMetl Corporation All rights reserved.