Installation Manual D-ML-IM 2-28-13 Linear Slot Ceiling Diffusers Aluminum • Modulinear Models: ML-37 • / ” Slot • Supply ML-38 • / ” Slot • Supply ML-39 • 1” Slot • Supply MLR-37 • / ” Slot • Return MLR-38 • / ” Slot • Return MLR-39 • 1” Slot • Return 1 3 1 3 2 4 2 4 Factory Cut Supply Factory Cut Return ML-37 MLR-37 ML-38 MLR-38 ML-39 MLR-39 Factory Spacer Factory Spacer Pattern Conrtoller Factory Cut Supply Factory Cut Return ML-37 Field Spacer ML-38 Field Spacer MLR-37 MLR-38 ML-
End Fabrication Field Assembled Corner Note: Mounting frame is used only on Frame & Border Types 3, 4, 6, 7A, 7B, 11. Side Rail Field Assembled Corner Temporary Gauge Alignment Strip Temporary Gauge End Frame (Factory Welded) 1. Determine size of duct opening. Duct width depends upon model, frame & border type and number of slot. See Duct Dimensions D’ table (Page 7). Duct length is as ordered. 2. First install end frames and field assembled corner pieces in ceiling opening.
Field Cutting Instructions Factory Cut Diffuser (Trimming) 1. Message length of diffuser to be cut. 2. Mark ML or MLR for cut. You can cut as much as 3” on each end for a maximum of 6”. Do not cut passed weld spacer. Factory Spacer 1 2 3. Insert 1/2” dowel into center of each pattern controller. Insert wood blocks or dowels on outside of pattern controller. Wood will support pattern controller when cutting through diffuser. 3" Max 4. Cut ML or MLR with circular saw.
Spring Clip - Attaching to Field Cut Diffuser To attach spring clip to field cut diffuser: 1. Start spring clip on side of blade support bar. 2. Use needle nose pliers or screwdriver to expand spring clip until it hooks over other side of blade support bar. 1 2 Hanger Bracket Mounting Instructions Field Cut Diffuser Only - All Frame & Border Types 1 1. Drill through top of blade support with 7/32” drill. Use hole in top of field spacer as guide for drill.
Pattern Controller Blade Settings Horizontal Left Horizontal Right Vertical Dampered Fully Dampered Horizontal Left Opposed One Way Opposed Unequal Flow Vertical & Horizontal (One Slot Dampered) Frame & Border Types, Dimensions Supply Model Return ML-37 S= /2” ML-38 ML-39 Model MLR-37 S=1/2” S= /4” MLR-38 S=3/4” S=1” MLR-39 S=1” 1 3 S S S S Border Type 1A Border Type 1B Border Type 2A With With Border Type 2B • Flange Border • Flange Border Both with • Screw Mounting •
Frame & Border Types, Dimensions (Continued) Frame & Border Type 3 Frame & Border Type 4 Frame & Border Type 6 With With With • Flush Border • Flange Border • Plaster & Tile Mounting Frame • Concealed Mounting • Concealed Mounting • Flush Border • Concealed Mounting D’+1 1/4 D’+1/2 D’=Duct Size D’=Duct Size D’=Duct Size 3 5/16" 3 5/16 1 15/16 1 7/8" 3 5/16 1 7/8 1 3/4 3/4" S O’=D’minus1/8" S 3/4" 1/2 1/8 1 1/8 3/4 O’=D’+3/4 S 3/4 O’=D’-1/8 Frame & Border Type 7A Border Type 9A
End Fabrication X End Border Y Open End Z End Cap D = Duct Size D = Duct Size C C D = Duct Size O O C O Overall Length for Various End Fabrications Frame and/or Border Type X X X Y X-X X Z X-Y C O Y X-Z C O C Y Y Z Y-Y O Z Z Y-Z Z-Z C O C O C O 1A, 1B, 9B D - 1 /8 D + /4 D - /16 D + /8 D + /8 D + /16 D D D + /16 D + /16 D + /8 D + 1/8 2A, 4, 7A, 16 D - 1 /8 D + /4 D - /16 D + /8 D + /8 D + /16 D D D + /16 D + /16 D + /8 D + 1/8 3, 6, 11 D
Accessories (Optional) Check Optional Miter Corner if provided No. of Slots MLF-37 • 1/2” Slot 1A, 1B 2A, 4, 7A 2B, 7B 3, 6, 11 9A 9B O D O D O D O D O D O D 1, 2 12 7/16 12 12 3/8 12 12 1/8 12 11 7/8 12 12 5/16 12 12 11/16 12 3-8 24 7/16 24 24 3/8 24 24 1/8 24 23 7/8 24 24 5/16 24 24 11/16 24 MLF-38 • 3/4” Slot MLF-39 • 1” Slot 12, 15 O 12 24 D 12 24 D = Duct Size O All dimensions are in inches.
