Table of Contents. Diffusers DIFFUSER PLENUM (OPTIONAL) CONTROL UNIT

Transcription

1 Diffusers Table of Contents Introduction In today s diverse building environment, we are seeing an expanding role of VV applications across many different market segments. While this is happening, it is necessary to make sure the VV systems and diffusers in particular are applied, installed, and operated correctly. The purpose of this section of the catalog is to show these issues that need to be considered when selecting and placing diffusers. Introduction D 3 Linear Slot Diffusers (LINR) D 4 djustable Flow Diffusers (FPF, VPF, BD, VPS) D Light Fixture Diffusers (LITE) D 6 Induction Diffusers (INDT, INDB, INCB, INSR) D 7 9 Perforated Diffusers (PERF) D 30 3 Mechanical Specifications D DIFFUSER PLENUM (OPTIONL) CONTROL UNIT VV-PRC008-EN D

2 Diffusers Introduction Diffusers The VariTrane line of variable-airvolume (VV) products has been an industry leader in performance and quality for many years. While most would associate the VariTrane name with VV terminal units, the diffuser product line has grown significantly over the years. Room ir Distribution When variable-flow cooling and constant-flow heating are combined in a zone, the zone air diffusers are usually selected at partial cooling load to ensure proper operation. Ceilingmounted linear slot diffusers are recommended since they perform well over a wide range of velocities. Cool air delivery takes advantage of the Coanda effect, whereby cool air discharged through a linear slot diffuser hugs the ceiling before descending, insuring proper operation over a wide range of flows without dumping. When delivering warm air with constant flow velocities, or warm/ cool air with variable flow velocities, the flow velocity must be high enough to ensure that the air reaches the floor. To prevent stratification, the warm air temperature should not be more than 0 F (6.7 C) above the zone air temperature. in the VariTrane line, an explanation of each type, and a short discussion of the proper application for each type. Linear Slot Diffuser (LINR) Linear slot diffusers are most commonly used in VV systems. This type of diffuser has a fixed vane inside, which means that the pattern is not adjustable. The fixed vane allows a wide range of flows through the diffuser without causing drafts. Lower flanges provide ceiling tile support as an integral part of the diffuser housing. Recommended Guidelines Linear Slot Diffusers Diffuser Placement The maximum recommended distance between diffusers is three diffuser lengths. For example, if the diffuser length is 4 feet (.9 m), the maximum separation distance would be 4 ft x 3 = ft (.9 m x 3 = m). The maximum recommended distance for diffusers from an exterior wall, with parallel flow to the wall is two diffuser lengths. For example, if the diffuser length is 4 feet (.9 m), the maximum distance from the exterior wall would be 4 ft x = 8 ft (.9 m x =.438 m). simple rule for better air circulation is to avoid placing supply air linear slot diffusers that allow airflows to collide at right angles. General Guidelines When beginning the placement and layout of diffusers, assume that each diffuser delivers only 75% to 80% of its SUPPLY IR DIFFUSERS NEVER DO THIS!! (PERPENDICULR IR FLOWS) RETURN IR DIFFUSER nominal airflow. If you start by using 00% of the nominal airflow, you will end up with high losses in performance, acoustical problems, and very little or no design flexibility. diffuser airflow rate is 50 cfm per linear foot (77.4 L/s per linear meter) of diffuser. Therefore, the recommended flow to use when designing is 50 cfm/ linear ft x 0.8 = 40 cfm/linear ft (77.4 L/s/ linear m x 0.8 = 6.9 L/s/linear m). The nominal airflow of a diffuser is determined by multiplying the diffuser length, the number of slots, and the airflow per linear foot. Using the airflow per linear foot calculated above, a 4 foot, -slot, -way diffuser should be designed to handle 4 linear ft x slots x 40 cfm/linear ft = 30 cfm (.9 m x slots x 6.9 L/s/linear m = 50.9 L/s). To maximize the effectiveness of ventilation with ceiling diffusers, throws should be kept as long as possible. For proper air circulation, try to maintain at least a 0 F (6.7 C) difference between the supply air and room temperature. This provides for optimum performance. Collision Velocities The collision velocity is the speed at which moving air meets a wall or another airflow In addition to choosing the correct diffuser type, the designer must properly size and place each diffuser in the zone to minimize noise and pressure drop while maximizing the throw and diffusion performance. VariTrane Diffuser Types The VariTrane line of diffusers contains a variety of different models. The following is a list of the diffuser types D VV-PRC008-EN

3 Diffusers Introduction stream. For exterior walls, the collision velocity should be between 00 and 50 feet per minute (FPM) (0.508 and 0.76 m/s). Do not exceed 50 FPM (0.76 m/s) on an exterior wall. For interior walls, the collision velocity should be between 50 and 75 FPM (0.54 and 0.38 m/s). Try not to exceed 75 FPM (0.38 m/s) for interior walls. The maximum recommended collision velocity between airflow streams should not exceed 50 FPM (0.76 m/s). The collision velocity between airflow streams is determined by the addition of both velocities at the point of collision. void collision of air velocities at right angles to each other by trying to maintain parallel flow. Following this guideline will allow one to maximize the "Coanda" effect and proper air diffusion in a zone. Experience indicates that mixed air after collision near the ceiling and below 50 FPM will produce comfort in the zone at the occupant's level. INTERIOR WLL 50 FPM MX. EXTERIOR WLL 75 FPM MX. 50 FPM MX. Return ir Slots Return air slots are placed perpendicular to supply air slots. This prevents supply air from bypassing the space, and allows for proper air circulation. With a suspended ceiling, low operating static pressure across the ceiling panels must be maintained. Failure to do so will cause the return air to be forced around the edges of the ceiling panels. When this happens, soiling of the panels will occur and the mechanical system can become choked for return air. space-to-plenum pressure drop of 0.0 to 0.03 inches of water is acceptable under most conditions. RETURN DIFFUSER SLOT PERPENDICULR SUPPLY DIFFUSER Fully djustable Pattern Flow (FPF) The FPF diffuser, a type of ceiling diffuser outlet, should be used with layin ceilings. The primary benefit of this kind of diffuser is that it provides the most flexibility of adjustment of the airflow pattern. The FPF diffuser provides adjustable vanes for horizontal or vertical throw. The dualvane option allows each slot to be adjusted for left, right, or vertical throw. Besides pattern adjustments, the vanes also provide airflow dampering. In addition, the vanes are adjustable from the face of the diffuser so changes to the pattern can be made after the diffuser is installed. Vane djustable Pattern Flow (VPF) The VPF diffuser is very similar to the FPF ceiling outlet diffusers. The primary difference is the design of the pattern adjustment vane. The VPF diffuser should be used with lay-in ceilings. The pattern is adjustable for horizontal left, horizontal right, or vertical throw. The pattern adjustment vane contains a felt seal on the end to reduce air leakage around the vane. The vanes are adjustable from the face of the diffuser, allowing the pattern to be easily changed after installation. Vane djustable Pattern Flow Special (VPS) The VPS diffuser is a special version of the VPF diffuser. The design of the vane is slightly different from the VPF model, but the VPS has the same functionality. The VPS has been popular in certain regions of the country. djustable ir Bar Diffuser (BD) The BD diffuser is another lay-in ceiling type of diffuser. The difference between the BD and the FPF or the VPF is that the BD has no adjustment vane. sliding air bar in the outlet of the diffuser makes the pattern adjustments. The pattern is adjustable for horizontal left, horizontal right, or vertical throw. Light Fixture Diffuser (LITE) The LITE diffuser should be installed on a suspended ceiling light fixture. This type of diffuser is quite popular with architects, because the number of ceiling penetrations can be reduced. The diffuser is available with an integral sliding volume damper and with or without pattern control vanes (some light fixtures already contain pattern control vanes). Both the volume damper and the pattern control vanes (if necessary) are adjustable with a screwdriver from the face of the diffuser without removing the light fixture doorframe. The pattern control vane allows for either horizontal or vertical throw. Induction Diffusers (INDT, INDB, INSR, INCB) Induction diffuser discharges air in a tight pattern along a ceiling. The discharged air then induces the room air into the air stream to effectively mix the streams. Induction diffusers are typically used in exterior zones that have unusually high heat loads or drafts. They are designed to be installed in suspended ceilings and have high induction horizontal airflow. The center down blow option provides a vertical air pattern for exterior walls or glass. Induction diffusers have adjustable blades for volume and direction control. INDT This type of induction diffuser contains a supply air outlet only. It will project air along a ceiling and provide mixing of the primary and room air streams. INDT This type of induction diffuser contains a standard supply air outlet along with down blow outlet. The down blow outlet will project a jet of primary air in a vertical direction while the standard outlet projects the induction jet. The down blow jet is often washed along an exterior glass window or aimed to combat something that is producing a draft in the space. INSR This type of induction diffuser contains a supply air outlet along with a separate return air inlet integrated into one device. This reduces the number of ceiling penetrations necessary. INCB This type of induction diffuser contains a standard supply air outlet, a down blow outlet, and a separate return air inlet integrated into one device. Perforated Diffuser (PERF) The PERF diffusers are designed for use with lay-in ceilings and provide the most economical option for air diffusion. The pre-assembled diffuser is made to lay in a 4" x 4" (0.60 m x 0.60 m) ceiling opening and is available with multiple round inlet connection sizes. Outlets are available with disc or adjustable deflector. The air is projected in a circular pattern from the diffuser. VV-PRC008-EN D 3

4 Linear Slot Model Number Description Linear Slot Diffusers The features of the Linear Slot Diffuser are described by the product categories shown in bold. Within each category the options available are listed. MODL Model VLSD Supply Diffuser VLRD Return Slot DSEQ Design Sequence Design Sequence TYPE Diffuser Type LINR Linear Diffuser LGTH Diffuser Length Diffuser Length '.5 Diffuser Length /' 4 Diffuser Length 4' 5 Diffuser Length 5' HGTH Diffuser Height LOW Low Height MED Medium Height HIGH High Height NONE For Return Slots WDTH Ceiling Tee Width 96 9/6" Ceiling Grid 56 5/6" Ceiling Grid SLOT Slot Configuration SW -Slot, -Way SW -Slot, -Way 3SW 3-Slot, -Way SW -Slot, -Way 4SW 4-Slot, -Way SDR -Slot, Direct Discharge 3SI 3-Slot, Way, Inlet on -Slot Side 3SI 3-Slot, Way, Inlet on -Slot Side SDR -Slot, Direct Discharge CEIL Ceiling Type TBR 5/6" T-Bar XT 5/6" T-Bar with Center Notch PLSR Plaster Ceiling T96 9/6" Narrow Faced Grid D96 9/6" Narrow Regressed Grid XN 9/6" Center Notch, Narrow Faced Grid XD 9/6" Center Notch, Narrow Regressed Grid SPLN Concealed Spline DMPR Damper Type FIRE Fire Damper BL Balancing Damper HNGR Hanger Holes WITH Hanger Holes D 4 VV-PRC008-EN

5 Linear Slot Ceiling Cross Reference CEILING SYSTEM CROSS REFERENCE (TYP. LL) ½ GRID TYPE 5/6"GRID STNDRD T-BR GRID (T-BR, xt) COMPNY/NME OR MODEL RMSTRONG PRELUDE SERIES CHICGO METLLIC 00/800 SERIES USG/DONN DX SERIES 5/6 ½ 9/6" GRID NRROW FCED GRID (T96, xn) RMSTRONG SUPRFINE CHICGO METLLIC TEMPR 4000 USG/DONN CENTRICITEE 9/6 ½ REVEL GRID NRROW FCED GRID (T96, xn) CHICGO METLLIC STYLINE 3700 (9/6") USG/DONN DX MERIDIN (9/6") 9/6 ½ REVEL GRID NRROW FCED GRID (T96, xn) CHICGO METLLIC STYLINE 3800 (3/4") 3/4 5/6 BOLT SLOT GRID (FINELINE TYPE) NRROW REGRESSED GRID (D96, xd) RMSTRONG SILHOUETTE (¾" HEIGHT) CHICGO METLLIC ULTRLINE 3500/3600 USG/DONN FINELINE ( 5/3" HEIGHT) GORDON INC. SIMPLICITY -SERIES 9/6 5/6 SCREW SLOT GRID (EXTRUDED LUMINUM) NRROW REGRESSED GRID (D96, xd) RMSTRONG TRIMLOK USG/DONN HIGHLINE GORDON INC. SIMPLICITY B-SERIES 9/6 NOTES:. T-BR HEIGHTS RNGE FROM ½" ¼". CHECK WITH FCTORY TO SSURE COMPTIBILITY BEFORE SPECIFYING DIFFUSERS FOR THESE TYPES OF GRIDS.. LL DIMENSIONS RE IN INCHES. VV-PRC008-EN D 5

6 Linear Slot Dimensional LINR LINR INLET BLNCING DMPER (OPTIONL) INTERNL INSULTION H NOMINL LENGTH W END BRCKET DETIL DIFFUSER HEIGHT H LOW MED HIGH INLET DIMETER 6" 8" 0" INLET DIMETERS RE BSED ON COMBINTION OF CEILING TYPE ND DIFFUSER LENGTH. SEE CHRT ON INLET VILBILITY. MODEL NUMBER SW SW SW 3SW 3SI 3SI 4SW DIFFUSER WIDTH W TILE FLNGE DETIL SW -SLOT -WY SW -SLOT -WY SW -SLOT -WY 3SW 3-SLOT -WY 3SI 3-SLOT -WY 3SI 3-SLOT -WY 4SW 4-SLOT -WY NOTES:. FIXED VNE PROVIDES DRFTLESS IR PTTERN OVER THE FULL RNGE OF FLOW. EXCELLENT FOR VRIBLE VOLUME.. LOWER FLNGES PROVIDE TILE SUPPORT S N INTEGRL PRT OF THE DIFFUSER HOUSING. 3. VILBLE IN NOMINL LENGTHS OF ',.5', 4', ND 5'. 4. MTERIL: 4-GGE GLVNNELED STEEL. 5. LL EXPOSED SURFCES HVE WHITE ENMEL FINISH. 6. LL DIMENSIONS RE IN INCHES. SDR -SLOT Direct Discharge SDR -SLOT Direct Discharge D 6 VV-PRC008-EN

7 Linear Slot Dimensional LINR LINR OPEN RETURNS NOMINL LENGTH END BRCKET DETIL 5 5 SW NOTES:. LOWER FLNGES PROVIDE TILE SUPPORT S N INTEGRL PRT OF THE DIFFUSER HOUSING.. VILBLE IN NOMINL LENGTHS OF ',.5', 4', ND 5'. 3. LL EXPOSED SURFCES HVE WHITE ENMEL FINISH. 4. RETURNS RE MDE OF 4-GGE GLVNNELED STEEL. 5. LL DIMENSIONS RE IN INCHES. VV-PRC008-EN D 7

8 Linear Slot Dimensional LINR ONE WY LINER SLOT DIFFUSER OR RETURN SLOT U.L. Listed Fusible Link Fire Damper 0-gage Steel SW SW 3SW -SLOT -SLOT 3-SLOT -WY -WY -WY TWO WY LINER SLOT DIFFUSER OR RETURN SLOT U.L. Listed Fusible Link Fire Damper 0-gage Steel SW -SLOT -WY 3SI 3-SLOT -WY 3SI 3-SLOT -WY 3SI 3-SLOT -WY 4SW 4-SLOT -WY Notes:. Spring loaded dampers blades are hinged and held open by 58 F (70 C) fusible links.. This drawing is for pictorial view only and not to be used for dimensional purposes. 3. The UL Reference R6700 VOLUME (-SLOT and -SLOT models only). D 8 VV-PRC008-EN

9 Linear Slot Dimensional LINR SLOT DIFFUSER SURFCE MOUNT FRMES FOR PLSTER CEILING CTUL 3 DIFFUSER + LENGTH W DIFFUSER WIDTH ¾ ¾ DIFFUSER CLIP MODEL DIFFUSER NUMBER SW SW 3SW 3SI FRME CEILING 3SI 4SW SECTION DETIL (INSTLLED) VV-PRC008-EN D 9

10 Linear Slot Inlet vailability Linear Slot Diffusers Inlet vailability 4" Length 30" Length 48" Length 60" Length Ceiling Type Slot rrangement Low Med High Low Med High Low Med High Low Med High 5/6" T-Bar -slot, -way 5" 5" 5" 5" 6" 6" 6" 6" Plaster -slot, -way 6" 6" 8" 8" 3-slot, -way 8" 8" 0" 0" -slot, -way 6" 6" 6" 6" 6" 6" 8"o* 8" 8" 8"o* 8" 8" 3-slot, -way 8" 8" 0" - 0" 4-slot, -way 8" 8" 0" 0" 5/6" T-Bar -slot, -way 6" 6" with Center -slot, -way 8" Notch 3-slot, -way 0" ( x T) -slot, -way 8"o* 8" 8" 3-slot, -way 0" 4-slot, -way 0" 9/6" Narrow -slot, -way 5" 5" 6" 6" 6" 6" Faced Grid or -slot, -way 6" 8" 8" 9/6" Narrow 3-slot, -way 8" 0" 0" Regressed Grid -slot, -way 6" 8" 0" 6" 8" 0" 6" 8" 0" 6" 8" 0" Or Concealed 3-slot, -way 0" 0" 0" 0" Spline 4-slot, -way 0" 0" 0" 0" 9/6" Center -slot, -way 6" 6" Notch Narrow -slot, -way 8" Faced Grid or 3-slot, -way 0" 9/6" Center -slot, -way 6" 8" 0" Notch Narrow 3-slot, -way 0" Regressed Grid 4-slot, way 0" Note: *O- Oval D 0 VV-PRC008-EN

11 Linear Slot Performance LINR Table - Style LINR Diffuser Performance Supply Slot Performance ' SW Cfm TSP Throw NC (0) (0) (0) 7 SW Cfm TSP Throw NC (0) (0) (0) 6 3 SW Cfm TSP Throw NC (0) (0) (0) 7 3SW Cfm TSP Throw NC (0) (0) (0) 6 3 3SW Cfm TSP Throw Throw NC (0) (0) (0) 6 3 4SW Cfm TSP Throw NC (0) (0) 9 36 Supply Slot Performance 4' SW Cfm TSP Throw NC (0) (0) (0) 6 3 SW Cfm TSP Throw NC (0) (0) SW Cfm TSP Throw NC (0) (0) (0) 6 3 3SW Cfm TSP Throw NC (0) (0) SW Cfm TSP Throw Throw NC (0) (0) SW Cfm TSP Throw NC (0) (0) Return Slot Performance ' SW Cfm SP SW Cfm SP Return Slot Performance.5' SW Cfm SP SW Cfm SP Return Slot Performance 4' SW Cfm SP SW Cfm SP Return Slot Performance 5' SW Cfm SP SW Cfm SP Supply Slot Performance.5' SW Cfm TSP Throw NC (0) (0) (0) 3 8 SW Cfm TSP Throw NC (0) (0) (0) 7 3 SW Cfm TSP Throw NC (0) (0) (0) 3 8 3SW Cfm SP Throw NC (0) (0) (0) SI Cfm SI TSP Throw Throw NC (0) (0) (0) SW Cfm TSP Throw Supply Slot Performance 5' SW Cfm TSP Throw NC (0) (0) SW Cfm TSP Throw NC (0) (0) SW Cfm TSP Throw NC (0) (0) SW Cfm TSP Throw NC (0) (0) SW Cfm TSP Throw Throw NC (0) (0) SW Cfm TSP Throw NC (0) (0) NC (0) (0) TSP - Static pressure readings in in. wg. Throw - Horizontal distance in feet to reach terminal velocity, VT, of 50 FPM. Throw and Throw indicates number of slots throwing each direction on 3-slot, -way diffuser. NC - one number evaluation of sound generation derived from sound power levels (re: 0- watts) less 0 db room absorption. (0) indicates less than 0 NC rating. Data shown is for one diffuser. dditional diffusers will tend to increase the NC value by perhaps db each, depending on size, air quantity and distance from other diffusers. Return applications will add + db to all values shown. Performance data is based on tests performed in accordance with DC 06 GRD-84 Test Code. VV-PRC008-EN D

12 djustable Flow Model Number Description djustable Flow Diffusers The features of the djustable Flow Diffuser are described by the product categories shown in bold. Within each category the options available are listed. FPF VPF MODL Model VLSD Supply Diffuser VLRD Return DSEQ Design Sequence Design Sequence TYPE Diffuser Type FPF Fully djustable Pattern Flow Diffuser VPF Vane djustable Pattern Flow Diffuser BD djustable ir Bar Diffuser VPS Vane djustable Pattern Flow Diffuser LGTH Diffuser Length Diffuser Length ' 3 Diffuser Length 3' 4 Diffuser Length 4' 5 Diffuser Length 5' Diffuser Length " 34 Diffuser Length 34" 46 Diffuser Length 46" 58 Diffuser Length 58" 4 Diffuser Length 3 3/4" 36 Diffuser Length 35 3/4" 48 Diffuser Length 47 3/4" 60 Diffuser Length 59 3/4" HGTH Diffuser Height LOW Low Height MED Medium Height HIGH High Height WDTH Ceiling Tee Width 9/6 Ceiling Grid 9/6" 56 Ceiling Grid 5/6" SLOT Slot Configuration SLT Slot SLT Slot 3SLT Slot 3 4SLT Slot 4 CEIL Ceiling Type TBR T-bar 5/6" T96 Narrow Faced T-bar 9/6" XT Center Notched Grid 5/6" XN Narrow Faced Center Notch 9/6" XD Narrow Regressed Cntr Notch 9/6" PLSR Plaster Ceiling D96 Narrow Regressed T-bar - 9/6" SPLN Concealed Spline DMPR Damper Type BL Balancing Damper DISW.5 /".75 3/4".0 ".5 /4".5 /".0 ".5 /4".5 /" STYL Diffuser Style NONE For VPF, BD, and VPS -slot one way -slot -way left or right 3 -slot -way with factory-installed T-bar 4 -slot -way left or right with factory-installed T-bar 5 -slot -way with factory-installed T-bars 6 -slot -way left or right with factory-installed T-bars -slot -way opposite -slot -way opposite left or right 3 -slot -way opposite with factory-installed T-bar 4 -slot -way opposite left or right with factory-installed T-bar 5 -slot -way opposite with factory-installed T-bars 6 -slot -way opposite left or right with factory-installed T-bars 7 -slot -way opposite with 3 factory-installed T-bars 8 -slot -way opposite left or right with 3 factory-installed T-bars 9 -slot -way opposite with factory-installed T-bars 33 3-slot -way 34 3-slot -way left or right 43 -slot -way opposite 44 4-slot -way opposite left or right D VV-PRC008-EN

13 djustable Flow Dimensional VPF VPF INLET DI +3 INLET DIMETER 6" 8" 0" HEIGHT LOW - 9" MED - " HIGH - 3" NOMINL LENGTH - ¼ NOMINL LENGTH INLET DMPER (OPTIONL) ½ INTERNL INSULTION 9 6 B B B CENTER T - BR STNDRD ON, 3, 4 SLOT T - BR CLIPS (OPTIONL) B SIDE T - BRS (OPTIONL) NOTES:. MTERIL: 4-GGE GLVNNELED STEEL. LL EXPOSED SURFCES PINTED FLT BLCK. T - BRS RE WHITE.. VILBLE IN NOMINL LENGTHS OF ', 3', 4', & 5'. 3. LUMINUM VNE WITH FELT SEL IS FULLY DJUSTBLE FROM THE FCE FOR LEFT, RIGHT, OR VERTICL THROW. 4. DESIGNED FOR VRIBLE OR CONSTNT VOLUME SYSTEMS. 5. MXIMUM PERFORMNCE ND FLEXIBILITY FOR INTERIOR OR PERIMETER PPLICTIONS IN VRIETY OF CEILING SYSTEMS. 6. LL DIMENSIONS RE IN INCHES SLOT WIDTH 3" 4 " " DIFFUSER WIDTH B -SLOT -SLOT 3-SLOT 4-SLOT 7" 5" 3 5" " " " " " 5" " 9" " VV-PRC008-EN D 3

14 djustable Flow Performance VPF Style VPF Diffuser Performance -Slot '.75 Cfm (k.05) TSP (Low) Throw NC (0) (0) (0) (0) Cfm (k.06) TSP (Low) Throw NC (0) (0) (0) Cfm (k.) TSP (Med) Throw NC (0) (0) (0) Slot 4'.75 Cfm (k.0) TSP (Low) Throw NC (0) (0) (0) Cfm (k.) TSP (Med) Throw NC (0) (0) (0) Cfm (k.) TSP (Med) Throw NC (0) (0) (0) Slot 5'.75 Cfm (k.) TSP (Med) Throw NC (0) (0) (0) Cfm (k.4) TSP (High) Throw NC (0) (0) Cfm (k.8) TSP (High) Throw NC (0) (0) (0) Slot '.75 Cfm (k.0) TSP (Low) Throw NC (0) (0) (0) Cfm (k.) TSP (Low) Throw NC (0) (0) (0) Cfm (k.) TSP (Med) Throw NC (0) (0) (0) Slot 4'.75 Cfm (k.9) TSP (Med) Throw NC (0) (0) (0) Cfm (k.) TSP (Med) Throw NC (0) (0) (0) D 4 -Slot 5'.75 Cfm (k.4) TSP (High) Throw NC (0) (0) (0) Cfm (k.8) TSP (High) Throw NC (0) (0) Slot '.75 Cfm (k.4) TSP (Med) Throw NC (0) (0) (0) Cfm (k.7) TSP (Med) Throw NC (0) (0) (0) Cfm (k.33) TSP (High) Throw NC (0) (0) (0) Slot 4'.75 Cfm (k.9) TSP (High) Throw NC (0) (0) (0) Cfm (k.34) TSP (High) Throw NC (0) (0) Slot '.75 Cfm (k.9) TSP (Med) Throw NC (0) (0) (0) Cfm (k.) TSP (Med) Throw NC (0) (0) (0) Cfm (k.44) TSP (High) Throw NC (0) (0) (0) (0) Slot 4'.75 Cfm (k.39) TSP (High) Throw NC (0) (0) (0) TSP - Total pressure readings in in. wg with horizontal throw. k - rea factor along with cfm is used to determine the average face velocity - Vk = cfm / k Throw - Horizontal distance in feet to reach terminal velocity, VT, of 50 FPM. NC - one number evaluation of sound generation derived from sound power levels ( re: 0- watts) less 0 db room absorption. (0) indicates less than 0 NC rating. Data shown is for one diffuser. dditional diffusers will tend to increase the NC value by perhaps db each, depending on size, air quantity and distance from other diffusers. Return applications will add + db to all values shown. Peformance data is based on tests performed in accordance with DC 06 GRD-84 Test Code. VV-PRC008-EN

15 djustable Flow Dimensional VPS VPS Inlet Damper (Optional) " Insulation Length Inlet Diameter LENGTH " 34" 46" 58" 4" (3-3/4") 36" (35-3/4") 48" (47-3/4") 60" (59-3/4") INLET 6" 7" 8" 0" OVL 6" 7" 8" 0" OVL 3 " 6 3" 7" 8 7" 8 " 3" 6 3" 6 3" 6 3" 6 3" 6 3" 6 Open Return Supply Diffuser Notes:. Material: 4-gage galvannealed steel with exposed surfaces and pattern controller painted flat black.. Neck opening is located so that the bottom of inlet is above air pattern controller throughout the range of settings including vertical. 3. VPS diffusers are only available for 5/6" T-Bar and 5/6" center notched grid ceilings. 4. ll dimensions are in inches. VV-PRC008-EN D 5

16 djustable Flow Dimensional FPF FPF and SLOT B + INSULTION INLET DI +3 NOMINL LENGTH - ¼ NOMINL LENGTH DMPERS (OPTIONL) INLET DIMETER 6" 8" 0" HEIGHT LOW - 9.5" MED -.5" HIGH - 3.5" SLOT WIDTH OVERLL WIDTH B B ONE SLOT SUPPLY B ONE SLOT TWO SLOT " 3" " " " " " " " 3" " " 3" " " " " 3 3" 3" 3" T-CLIPS (OPTIONL) B TWO SLOT SUPPLY NOTES:. DJUSTBLE VNES FOR HORIZONTL OR VERTICL THROW. DUL VNE OPTION LLOWS ECH SLOT TO BE DJUSTED FOR LEFT, RIGHT OR VERTICL THROW ND DMPERING.. DIFFUSERS OVER 36" LONG HVE VNES MDE IN TWO SEPRTE PIECES TO LLOW SPLITTING IR FLOW SETTINGS WITHIN ECH SLOT. D B D + 3 ONE SLOT RETURN B TWO SLOT RETURN 3. VILBLE IN NOMINL LENGTHS FROM ', 3', 4', ND 5'. 4. MTERIL: 4-GGE GLVNNELED STEEL. 5. LL EXPOSED SURFCES PINTED FLT BLCK. FCTORY- INSTLLED T-BRS RE WHITE. 6. LL DIMENSIONS RE IN INCHES. SLOT WIDTH OVERLL WIDTH B OUTLET HEIGHT D ONE SLOT TWO SLOT " 3" " " " 3" " " " " " 3" " " " 3" " 3" 3" " " 3" " " " " " " " 3" 4 4 STYLES: ONE SLOT TWO SLOT D 6 VV-PRC008-EN

17 djustable Flow Dimensional FPF FPF 3 and 4 SLOT INLET DMPER (OPTIONL) INSULTION INLET DI + 3½ NOMINL LENGTH - ¼ INLET DIMETER HEIGHT ½ ½ 6" LOW - 9.5" 8" 0" MED -.5" HIGH - 3.5" B SIDE T-BRS (OPTIONL) CENTER T-BRS (STNDRD) NOTES:. VILBLE IN NOMINL LENGTHS FROM TO 5 FEET.. MTERIL: 4-GGE GLVNNELED STEEL. 3. LL EXPOSED SURFCES PINTED FLT BLCK. FCTORY-INSTLLED T-BRS RE WHITE. 4. LL DIMENSIONS RE IN INCHES. SLOT WIDTH OVERLL WIDTH B THREE SLOT FOUR SLOT 3" 3" 3" 4 " " " 4 4 5" " 3" 5" 5" 5" PTTERN CONFIGURTIONS SINGLE VNES LLOW ECH SLOT TO THROW IN ONE HORIZONTL DIRECTION OR VERTICL. SPECIFY THE NUMBER OF SLOTS TO THROW IN ECH DIRECTION. EX: (STYL 33) (STYL 43) DUL VNES LLOW ECH SLOT TO BE DJUSTED FOR RIGHT, LEFT OR VERTICL THROW. (STYL 34) (STYL 44) VV-PRC008-EN D 7

18 djustable Flow Performance FPF Style FPF Diffuser Performance -Slot '.5 Cfm TSP Throw NC (0) (0) Cfm TSP Throw NC (0) (0) Cfm TSP Throw NC (0) (0) (0) Cfm TSP Throw NC (0) (0) (0) Cfm TSP Throw NC (0) (0) (0) (0) Slot 4'.5 Cfm TSP Throw NC (0) (0) (0) Cfm TSP Throw NC (0) (0) Cfm TSP Throw NC (0) (0) Cfm TSP Throw NC (0) (0) Cfm TSP Throw NC (0) (0) (0) (0) (0) Slot 5'.50 Cfm TSP Throw NC (0) (0) (0) D 8 VV-PRC008-EN

19 djustable Flow Performance FPF Style FPF Diffuser Performance (con't.) -Slot '.5 Cfm TSP Throw NC (0) (0) (0) (0) Cfm TSP Throw NC (0) Cfm TSP Throw NC (0) Cfm TSP Throw NC (0) Cfm TSP Throw NC (0) (0) (0) (0) (0) Slot 4'.5 Cfm TSP Throw NC (0) (0) (0) Cfm TSP Throw NC (0) (0) Cfm TSP Throw NC (0) (0) Cfm TSP Throw NC (0) (0) (0) Cfm TSP Throw NC (0) (0) (0) (0) (0) (0) Slot 5'.50 Cfm TSP Throw NC (0) (0) (0) (0) (0) (0) (0) TSP - Total pressure readings in in. wg with horizontal throw. Throw - Horizontal distance in feet to reach terminal velocity, VT, of 50 FPM. NC - one number evaluation of sound generation derived from sound power levels ( re: 0- watts) less 8 db room absorption. (0) indicates less than 0 NC rating. Data shown is for one diffuser. dditional diffusers will tend to increase the NC value by perhaps db each, depending on size, air quantity and distance from other diffusers. Return applications will add + db to all values shown. Performance data is based on tests performed in accordance with DC 06 GRD-84 Test Code. VV-PRC008-EN D 9

20 djustable Flow Dimensional BD BD INLET DI + 3½ NOMINL LENGTH INTERNL INSULTION INLET DMPER (OPTIONL) ½ INLET DIMETER HEIGHT 6" LOW 9.5" 8" MED.5" 0" HIGH 3.5" ½ ½ T-CLIPS (OPTIONL) NOTES:. SLIDING IR BR PROVIDES LEFT, RIGHT, OR VERTICL THROW.. DIFFUSERS OVER 36" IN LENGTH HVE TWO IR BRS PER SLOT TO LLOW SPLIT IR PTTERNS. B B T-BRS BY OTHERS 3. VILBLE IN NOMINL LENGTHS FROM ' TO 5'. NORML T-BR PPLICTION IS NORML LENGTH LESS ¼". 4. MTERIL: 4-GGE GLVNNELED STEEL. LL EXPOSED SURFCES PINTED BLCK. 5. ONLY VILBLE FOR 5/6" T-BR ND CENTER NOTCHED GRID (XT) CEILING ONLY. 6. LL DIMENSIONS RE IN INCHES. ONE SLOT TWO SLOT SLOT WIDTH OVERLL WIDTH B D 0 VV-PRC008-EN

21 djustable Flow Performance BD Style BD Diffuser Performance -Slot 4'.75 Cfm (Low) TSP Throw NC (0) Cfm (Med) TSP Throw NC Cfm (Med) TSP Throw NC (0) Cfm (Med) TSP Throw NC (0) (0) Cfm (Med) TSP Throw NC (0) Cfm (Med) TSP Throw NC (0) Cfm (Med) TSP Throw NC Slot 4'.75 Cfm (Med) TSP Throw NC Cfm (Med) TSP Throw NC Cfm (High) TSP Throw NC (0) Cfm (High) TSP Throw NC (0) UNIT LENGTH FCTORS Multiply 48" data by the following factors: Nominal Length TSP Throw NC 4" x 3.0 x.0 x.4 36" x.4 x.5 x. 60" x 0.8 x 0.9 x.0 TSP - Static pressure readings in in. wg. Throw - Horizontal distance in feet to reach terminal velocity, VT, of 50 FPM. NC - one number evaluation of sound generation derived from sound power levels ( re: 0- watts) less 0 db room absorption. (0) indicates less than 0 NC rating. Data shown is for one diffuser. dditional diffusers will tend to increase the NC value by perhaps db each, depending on size, air quantity and distance from other diffusers. Return applications will add + db to all values shown. Peformance data is based on tests performed in accordance with DC 06 GRD-84 Test Code. VV-PRC008-EN D

22 Light Fixture Model Number Description Light Fixture Diffusers MODL Model The features of the Light Fixture Diffuser are described by the product categories shown in bold. Within each category the options available are listed. VLSD - SNGL with Side Inlet VLSD Supply Diffuser VLRD Return Diffuser DSEQ Design Sequence Design Sequence TYPE Diffuser Type SNGL Single Side Diffuser DUL Dual Side Diffuser LGTH Diffuser Length Diffuser Length ' 3 Diffuser Length 3' 4 Diffuser Length 4' x Light Fixture Diffuser Size ' x ' 3x3 Light Fixture Diffuser Size 3' x 3' x4 Light Fixture Diffuser Size ' x 4' x4 Light Fixture Diffuser Size ' x 4' 4x4 Light Fixture Diffuser Size 4' x 4' INLT Inlet Size nd Location S5 5 Side Inlet S6 6 Side Inlet T5 5 Top Inlet T6 6 Top Inlet T7 7 Top Inlet T8 8 Top Inlet INSL Insulation NONE No Insulation On Diffuser INT Matte-Faced Internally Insulated EXT Foil-Faced Externally Insulated VLSD-Dual with Side Inlet VLSD-DUL with Top Inlet D VV-PRC008-EN

23 Light Fixture Dimensional VLSD SNGL VLSD SNGL MOUNTING BRCKET INTERNL INSULTION (OPTIONL) VOLUME DMPER CCESSIBLE THROUGH IR SLOT - 4' MODELS HVE TWO INDIVIDUL DMPERS IR PTTERN BR OMITTED WHEN LIGHT FIXTURE RIL IS FURNISHED WITH DEFLECTOR HOLD-DOWN TBS TO LIGN ND LOCK DIFFUSER TO LIGHT FIXTURE IR SLOT (SHIPPED FLT) INSULTION L NONE - STEEL UNINSULTED INT - STEEL WITH /" FOIL FCED EXTERNL INSULTION EXT - STEEL WITH /" FOIL FCED EXTERNL INSULTION INSL - NONE INSL - INT INSL - EXT NOTES:. DIFFUSERS RE VILBLE S SUPPLY UNITS FOR REGRESSED OR FLUSH IR HNDLING LIGHT DIFFUSERS.. MTERIL: GLVNNELED STEEL. EXPOSED SLOT RE PINTED FLT BLCK. 3. HEIGHT: 6¾" STNDRD. CEILING CLERNCE REQUIRED IS 7" PLUS MOUNT LIGHT IS REGRESSED BOVE CEILING LINE. (FOR SINGLE SIDE ONLY) 4. INLETS: 5" OR 6" OVL STNDRD ON SIDE ENTRY. DIFFUSER LENGTH 3 4 IR DIFFUSER LENGTH 0" 7" 40" 5. LL SUPPLY DIFFUSERS INCLUDE PLENUM, INSULTION (WHEN SPECIFIED) ND DUCT CONNECTION. 6. INSULTION IS U.L. LISTED ND MEETS NFP 90 ND U.L STNDRD DIFFUSER LENGTHS RE STTED. CTUL LENGTH WILL VRY WITH LIGHT MNUFCTURER. TO INSURE COMPTIBILITY, LIST LIGHT MNUFCTURER ND MODEL NUMBER. INLET S5-5" SIDE INLET S6-6" SIDE INLET 8. LL DIMENSIONS RE IN INCHES. VV-PRC008-EN D 3

24 Light Fixture Dimensional VLSD DUL VLSD DUL D 4 VV-PRC008-EN

25 Light Fixture Dimensional VRLD SNGL VRLD SNGL OPEN RETURNS MOUNTING BRCKET (SHIPPED FLT) 3 LENGTH INTERNL INSULTION (OPTIONL) VOLUME DMPER CCESSIBLE THROUGH IR SLOT - 4' MODELS HVE TWO INDIVIDUL DMPERS HOLD-DOWN TBS TO LIGN ND LOCK DIFFUSER TO LIGHT FIXTURE IR SLOT (SHIPPED FLT) INSULTION NONE - STEEL UNINSULTED INT - STEEL WITH ½" INTERNL MTTE FCED INSULTION INSL - NONE NOTES:. DIFFUSERS RE VILBLE S RETURN UNITS. FOR REGRESSED OR FLUSH IR HNDLING LIGHT DIFFUSERS.. MTERIL: GLVNNELED STEEL EXPOSED RE PINTED FLT BLCK. 3. INSULTION IS U.L. LISTED ND MEETS NFP 90 ND U.L HEIGHT: 3½" STNDRD. CEILING CLERNCE REQUIRED IS 3¾" PLUS MOUNT LIGHT IS REGRESSED BOVE CEILING LINE. 5. STNDRD DIFFUSER LENGTHS RE STTED. CTUL LENGTH WILL VRY WITH LIGHT MNUFCTURER. TO INSURE CMPTIBILITY, LIST LIGHT MNUFCTURER ND MODEL NUMBER. 6. LL DIMENSIONS RE IN INCHES. LENGTH 3 4 IR DIFFUSER LENGTH 0" 7" 40" VV-PRC008-EN D 5

26 Light Fixture Performance VLSD Style LITE Diffuser Performance VLSD-SNGL Side inlet ' Cfm Throw-V Throw-H TSP-5" TSP-6" NC (0) (0) VLSD-SNGL Side inlet 3' Cfm Throw-V Throw-H TSP-5" TSP-6" NC (0) (0) (0) VLSD-SNGL Side inlet 4' Cfm Throw-V Throw-H TSP-5" TSP-6" NC (0) (0) (0) VLSD-DUL Top inlet CFM Throw-V Throw-H TSP-5" TSP-6" NC (0) (0) (0) VLSD-DUL Top inlet 3 CFM Throw-V Throw-H TSP-5" TSP-6" NC VLSD-DUL Top inlet 4 CFM Throw-V Throw-H TSP-5" TSP-6" NC (0) (0) VLSD-DUL Side Inlet ' Cfm Throw-V Throw-H TSP-5" TSP-6" NC (0) (0) (0) VLSD-DUL Side Inlet 3' Cfm Throw-V Throw-H TSP-5" TSP-6" NC (0) VLSD-DUL Side Inlet 4' Cfm Throw-V Throw-H TSP-5" TSP-6" NC (0) (0) (0) Projection - V and H are vertical and horizontal distance in feet to reach terminal velocities of 00 FPM and 50 FPM respectively. TSP - Static pressure drop in in. wg across the diffuser with dampers full open and horizontal air projection. NC - one number evaluation of sound generation derived from sound power levels ( re: 0- watts) less 8 db room absorption. (0) indicates less than 0 NC rating. Data shown is for one diffuser. dditional diffusers will tend to increase the NC value by perhaps db each, depending on size, air quantity and distance from other diffusers. Return applications will add + db to all values shown. Performance data is based on tests performed in accordance with DC 06 GRD-84 Test Code. D 6 VV-PRC008-EN

27 Induction Induction Diffusers The features of the Induction Diffuser are described by the product categories shown in bold. Within each category the options available are listed. Model Number Description MODL VLSD DSEQ TYPE INDT INDB INCB Model Supply Diffuser Design Sequence Design Sequence Diffuser Type Induction, Supply Only Induction, Down Blow, Supply Only Induction, Down Blow, Supply/Return Induction, Supply/Return Diffuser Length INSR LGTH Diffuser Length - ' 3 Diffuser Length - 3' 4 Diffuser Length - 4' 5 Diffuser Length - 5' CEIL Ceiling Type TBR Tbar - 5/6 XT Center Notch Grid - 5/6 PLSR Plaster Ceiling DMPR Damper Type BL Balancing Damper VV-PRC008-EN D 7

28 Induction INDT, INDB, INSR, INCB Dimensional INDT, INDB, INSR, INCB SUPPLY DIFFUSER SUPPLY DIFFUSER WITH DOWNBLOW B (INDT) (INDB) B B B SUPPLY/RETURN DIFFUSER SUPPLY/RETURN WITH DOWNBLOW B (INSR) (INCB) B B B SUPPLY DIFFUSER SUPPLY/RETURN DIFFUSER Internal insulation Internal insulation INLET SIZE DIFFUSER HEIGHT H = 6 = 6 Vane Detail (T-BR by other) Notes:. High induction horizontal air flow.. Center down blow option provides a veritcal air pattern for exterior walls or glass. djustable Blades for volume and direction control. 3. Supply/Return combination diffusers allow room air to be returned to ceiling plenum. 4. Nominal lengths of ', 3', 4', and 5'. ctual length is nominal minus /4 inch. 5. Material: 4-gage galvannealed steel. ll exposed surfaces painted flat black. 6. ll dimensions are in inches. D 8 VV-PRC008-EN

29 Induction Performance INDUCT Style INDUCT Diffuser Performance Supply Slot Performance INDT, INSR ' Cfm TSP Throw NC (0) (0) (0) (0) (0) 6 9 3' Cfm TSP Throw NC (0) (0) (0) ' Cfm TSP Throw NC (0) (0) ' Cfm TSP Throw NC (0) Supply Slot Performance with Down Blow INDB, INCB 3' Cfm TSP Throw H Throw V NC ' Cfm TSP Throw H Throw V NC (0) ' Cfm TSP Throw H Throw V NC (0) Return Slot Performance INSR, INCB Cfm/Ft Neg. SP TSP - Static pressure readings in in. wg. Throw - Horizontal distance in feet to reach terminal velocity, VT, of 50 FPM. Vertical throw values are based on standard " long down blow slot and 3/8" width setting. NC - one number evaluation of sound generation derived from sound power levels (re: 0- watts) less 8 db room absorption. (0) indicates less than 0 NC rating. Data shown is for one diffuser. dditional diffusers will tend to increase the NC value by perhaps db each, depending on size, air quantity and distance from other diffusers. Return applications will add + db to all valves shown. Performance data is based on tests performed in accordance with DC 06 GRD-84 Test Code. VV-PRC008-EN D 9

30 Perforated Model Number Description Perforated Diffusers The features of the Perforated Diffuser are described by the product categories shown in bold. Within each category the options available are listed. MODL VLSD VLRD DSEQ DEFL DJ DISC NONE TYPE PERF Model Supply Diffuser Return Diffuser Design Sequence Design Sequence Deflector djustable Deflector Disc Deflector No Deflector Diffuser Type Perforated Diffuser CEIL Ceiling Type TBR T-bar 5/6" T96 Narrow Faced Grid 9/6" D96 Narrow Regressed Grid 9/6" INLT Inlet Size nd Location 6 6" Round Inlet, Top 8 8" Round Inlet, Top 0 0" Round Inlet, Top " Round Inlet, Top 4 4" Round Inlet, Top DMPR Damper Type BFLY Butterfly Damper D 30 VV-PRC008-EN

31 Perforated Dimensional PERF PERF BUTTERFLY DMPER (OPTIONL FOR VLSD ONLY) ½ 6 T-BRS DISC OR DJUSTBLE DEFLECTOR (FOR VLSD ONLY) 4" CENTERS DEFL DJ DISC DEFLECTOR (VLSD ONLY) DJUSTBLE DEFLECTOR (VLSD ONLY) NO DEFLECTOR (VLRD ONLY) INLT " TOP INLET 8" TOP INLET " TOP INLET 4" TOP INLET NOTES:. COMPLETELY SSEMBLED FOR ESY LY-IN INSTLLTION.. -GGE PERFORTED STEEL FCE WITH WHITE FINISH ND 5% OPEN RE GGE STEEL PLENUM WITH BLCK INTERIOR. THE FCE FOR LEFT, RIGHT, OR VERTICL THROW. 4. ROUND INLET SIZES 6" THROUGH 4". 5. VILBLE WITH DISC OR DJUSTBLE DEFLECTOR. 6. LL DIMENSIONS RE IN INCHES. VV-PRC008-EN D 3

32 Perforated Performance PERF Table - Style PERF Diffuser Performance 4 x 4 Nominal size Inlet Size 6 Cfm TSP Throw NC Cfm TSP Throw NC Cfm TSP Throw NC Cfm TSP Throw NC Cfm TSP Throw NC TSP - Total pressure readings in in. wg across diffuser. Throw - Horizontal distances in feet to reach terminal velocity, VT, of 50 FPM. NC - one number evaluation of sound generation derived from sound power levels (re: 0- watts) less 0 db room absorption. (0) indicates less than 0 NC rating. Data shown is for one diffuser. dditional diffusers will tend to increase the NC value by perhaps db each, depending on size, air quantity and distance from other diffusers. Return applications will add + db to all valves shown. Performance data is based on tests performed at Donco ir Products and ETL Laboratories in accordance with DC 06 GRD-84 Test Code. D 3 VV-PRC008-EN

33 Diffusers Mechanical Specifications MODEL VLSD and VLRD Supply and Return Diffusers. LINR. General Casing This diffuser is constructed of 4-gage galvannealed steel. Hanger holes on each end of the diffuser for installation are optional. Slot edges formed over; provide double thickness tile support as an integral part of the diffuser housing. ll exposed surfaces are finished with white enamel.. Insulation The interior surface of the diffuser casing is acousticallyand thermally-lined with ½-inch (3 mm).9 lb cu ft (30.4 kgs/cu m), R-Value of. density glass fiber with high-density facing. The insulation is UL listed and meets NFP-90 and UL 8 standards. 3. T-Bar Ceiling This diffuser is designed to install over the T of most standard exposed suspended ceilings. The end angle is provided to allow the slot to fit flush with the bottom of the T and ceiling tile. 4. x T-Bar Ceiling This diffuser is designed to install over the T of most standard exposed suspended ceilings. The notch is provided in the middle of the unit to allow the diffuser to set over the T located at the middle point. 5. Concealed Spline Ceiling The diffuser is designed to sit in the center of the module, parallel to the main ceiling support member. The ceiling tile rests on the edge of the discharge slot and the flange. t-bar insert is provided in the center of a two-way throw diffuser, when applicable. 6. Plaster Ceiling The diffuser is designed to sit into the opening in the plaster. The diffuser must be used in conjunction with a trim frame for a finished appearance. 7. Trim Frame The trim frame is extruded aluminum and designed to attach to the diffuser slot(s) with clips. The trim frame is finished with white enamel and is designed to set into the opening of a plaster ceiling for a finished appearance. 8. Fire Damper n integral fusible link, -gage factory installed fire damper. The fusible link has a melting point of 58 F (70 C). 9. Inlet Balancing Damper factory-provided and -installed single-blade damper, with a position-locating handle for balancing air. 0. Inlet The inlet connection is sized to fit standard, round, flexible ductwork.. gency Listing UL listed as environmental air terminal unit. Control #49X (- and -slot only). FPF, VPF, VPS, BD. General Casing This diffuser is constructed of 4-gage galvannealed steel. ll exposed surfaces of the diffuser are finished with flat black enamel. Factoryinstalled t-bars are finished with white enamel.. Insulation The interior surface of the supply diffuser casing is acoustically- and thermally-lined with ½-inch (3 mm).9 lb/cu ft (30.4 kg/cu m), R-Value of. density glass fiber with highdensity facing. The insulation is UL listed and meets NFP-90 and UL 8 standards. 3. T-Bar Ceiling This diffuser is designed to install over the T of most standard exposed suspended ceilings. The end angle is provided to allow the slot to fit flush with the bottom of the T and ceiling tile. 4. x T-Bar Ceiling This diffuser is designed to install over the T of most standard exposed suspended ceilings. The notch is provided in the middle of the unit to allow the diffuser to set over the T located at the middle point. 5. Plaster Ceiling The diffuser is designed to set into the opening in the plaster. The diffuser must be used in conjunction with a trim frame for a finished appearance. The trim frame is extruded aluminum with white finish. 6. Inlet Balancing Damper factory-provided and -installed single-blade damper, with a position-locating handle for balancing air. 7. Inlet The inlet connection is sized to fit standard, round, flexible ductwork. INDT. General Casing This diffuser is constructed of 4-gage galvannealed steel. Exposed surfaces are finished with flat black enamel.. Insulation The interior surface of the diffuser casing is acousticallyand thermally-lined with ½-inch (3 mm).9 lb cu ft (30.4 kgs/cu m), R-Value of. density glass fiber with high-density facing. The insulation is UL listed and meets NFP-90 and UL 8 standards. 3. T-Bar Ceiling This diffuser is designed to install over the T of most standard exposed suspended ceilings. 4. x T-Bar Ceiling This diffuser is designed to install over the T of most standard exposed suspended ceilings. The notch is provided in the middle of the unit to allow the diffuser to set over the T located at the middle point. 5. Plaster Ceiling The diffuser is designed to set into the opening in the plaster. The diffuser must be used in conjunction with a trim frame, for a finished appearance. The trim frame is extruded aluminum and designed to attach to the diffuser slot with clips. The trim frame is finished with white enamel. 6. Inlet Balancing Damper factory-provided and -installed single-blade damper, with a position-locating handle for balancing air. 7. Inlet The inlet connection is sized to fit standard, round, flexible ductwork. LITE. General Casing This diffuser is constructed of 4-gage galvannealed steel. Hold-down tabs on the diffuser ends are provided to align and lock the diffuser to the light air slot. Exposed slot area is painted flat black.. Insulation Optional. If used, the interior surface of the diffuser casing is acoustically and thermally lined with ½ inch (3 mm).9 lb cu ft (30.4 kgs/cu m), R-Value of. density glass fiber with highdensity facing. The insulation is UL listed and meets NFP-90 and UL 8 standards. The external insulation is foil-faced. 3. Dual Side Diffuser This diffuser is designed for dual-side installation on the light fixture. 4. Single Side Diffuser This diffuser is designed for single-side installation on the light fixture. side bracket is provided for extra support. 5. Inlet The inlet connection is sized to fit standard, round, flexible ductwork. VV-PRC008-EN D 33