SOUND APPLICATION GUIDE

Transcription

1 SOUND APPLICATION GUIDE Vertical Stacked Water Source Heat Pump VPCS Models NEW RELEASE Form 1.-AG1 (8) LD9

2 FORM 1.-AG1 ISSUE DATE: 8// TABLE OF CONTENTS GUIDELINES AND EXAMPLES...3 Overview...3 Sound Power versus Sound Pressure...3 Sound Power Ratings - AHRI Standard Sound Pressure Metrics...4 Design Guidelines...5 Example Applications...6 Example Example Example Example Example Installation Guidelines...10 Final Comments References APPENDIX... AHRI-2 Sound Ratings - VPB Series, Vertical Stacked Water Source Heat Pump... LIST OF FIGURES FIGURE 1 - AHRI Standard 2 Sound Test Setups Example...4 FIGURE 2 - Relative Response of Sound Level Meter A-Weighted Function...5 FIGURE 3 - Noise Criteria Curves...5 FIGURE 4 - Example 1: Small Hotel Room, 3 sq-ft, 3/4-Ton Unit, Single Supply Grille...8 FIGURE 5 - Example 2: Large Hotel Room, 5 sq-ft, 1-Ton Unit, Two Supply Grilles...8 FIGURE 6 - Example 3: Small One Bedroom Apartment, 7 sq-ft, 1-1/2 Ton Unit, Dual Supply Grilles... 9 FIGURE 7 - Example 4: Two Bedroom Apartment, 800 sq-ft, 1-1/4 Ton Unit and 3/4-Ton Unit...9 FIGURE 8 - Example 5: Two Bedroom Apartment, 10 sq-ft, 2-Ton Unit...10 FIGURE 9 - Recommended Installation for Sound Sensitive Applications LIST OF TABLES TABLE 1 - Recommended Design Guidelines for WSHP Related Background Sound in Rooms...6 TABLE 2 - Typical NC Values for Example WSHP Installations...7 TABLE 3 - Ducted Discharge Configuration - Top, Standard Blower... TABLE 4 - Free Discharge Configuration - Single Front Grille, Standard Blower... TABLE 5 - Ducted Discharge Configuration - Top, Static Blower... TABLE 6 - Free Discharge Configuration - Single Front Grille, Static Blower... TABLE 7 - Ducted Discharge Configuration - Top, Standard Blower, Quiet Chassis... TABLE 8 - Free Discharge Configuration - Single Front Grille, Standard Blower, Quiet Chassis... TABLE 9 - Ducted Discharge Configuration - Top, Static Blower, Quiet Chassis... TABLE 10 - Free Discharge Configuration - Single Front Grille, Static Blower, Quiet Chassis... 2 JOHNSON CONTROLS

3 FORM 1.-AG1 ISSUE DATE: 8// GUIDELINES AND EXAMPLES OVERVIEW This guide presents information that will help engineers, architects, contractors, and others to develop Water Source Heat Pump (WSHP) designs that will provide acceptable background sound for building applications. It makes good business sense to design and verify background noise levels for new or repurposed building space. Building owners and developers understand that tenants and buyers are often willing to pay more for a space with premium background sound. The vertical stacked WSHP offers superior energy efficiency and comfort, but along with these benefits there can be some potential pitfalls with regard to noise and vibration. Unlike centralized heating and cooling systems, the WSHP brings the compressor and blower closer to the occupied space; thus, the building design, equipment selection, and system installation becomes more critical to achieving an acceptable background sound. The purpose of this guideline is not to reproduce a primer on acoustics. The fundamentals of acoustics are covered very well in two publications: Chapter 8 of the ASHRAE Fundamentals Handbook 1 and Shaffer 2. Sound metrics and criteria are discussed here only to the extent of evaluating WSHP applications. SOUND POWER VERSUS SOUND PRESSURE Sound power levels (L w ) in decibels (db) are typically used to rate sound produced by HVAC equipment. The sound power level is a characteristic of the sound source and only depends on the source design and operating conditions. The L w is the preferred metric to compare manufacturer s equipment. People hear sound pressure levels (L p ) in decibels (db). Any criteria for acceptable sound should be based on the L p metric. The sound pressure levels in a room depend on the sound power radiated into that room and the room characteristics. The sound radiated into the room depends on the sound source and any mechanical details such as how the unit is installed (concealed), duct, and GRD designs. The room characteristics that affect the sound pressure at the occupant include distance from the sources; the room size and shape; architectural finishes on the walls, ceiling and floor; and room furnishings. Unfortunately, sound power (Watts) and sound pressure (μpa) are both expressed in decibels (db), and the numbers are sometimes roughly the same. However, do not confuse the two metrics. The objective of this guide is to understand the relationship between sound power levels and pressure levels (L w - L p ) for a specific application. With this information, the sound at the occupant s ear can be estimated from the equipment manufacturer s sound ratings. SOUND POWER RATINGS - AHRI STANDARD 2 The Air-Conditioning,, and Refrigeration Institute (AHRI) has approved standards for rating the sound from HVAC equipment. This provides a level playing field for evaluating the sound from various equipment manufacturers. The standard that applies to WSHP equipment is AHRI Standard 2. This standard is available free from the AHRI website 3. The standard rates equipment in octave band sound power levels (L w ) for various sound components. The sound components that are tested will vary with the application. It is up to the manufacturer to decide how the equipment will be installed and used and to test the product in this configuration. To see an example, AHRI 2 sound test setups are shown in Figure 1 on page 4. Johnson Controls equipment is tested in an installed condition (concealed behind a gypsum wall), and the following sound components are tested: free-inlet (with standard acoustic panel), free-discharge (with grille) and ducted discharge. With these three basic sound components, the sound power radiated into the occupied space can be calculated. AHRI Standard 2 also requires a mapped sound rating approach. For WSHP equipment, that means that each sound component must be tested over a range of supply fan operating points so the sound can be accurately calculated at the user s design conditions. JOHNSON CONTROLS 3

4 GuideLines and Examples FORM 1.-AG1 ISSUE DATE: 8// NOTE: (a) reverberation room free-inlet, (b) sound intensity free-inlet, (c) reverberation room ducted-discharge, and (d) sound intensity ducteddischarge LD9 Figure 1 - AHRI STANDARD 2 SOUND TEST SETUPS EXAMPLE SOUND PRESSURE METRICS There are two commonly used metrics for evaluating the background sound in buildings: the A-weighted equivalent sound pressure level and the Noise Criteria (NC) rating. The A-weighted equivalent sound pressure level (Leq in db(a)) is a single number measure that weights the frequency content of sound to match that of human hearing (Figure 2 on page 5). This metric correlates well with our perception of steady sounds with no tonality. As such, it correlates well with annoyance from many types of noises from HVAC equipment to highway traffic noise that are pervasive in developed societies. The Leq in db(a) also averages the A-weighted sound pressure level over time, which is easily done with an integrating sound level meter. This metric is often used to enforce noise codes and to assess the impact or annoyance from noise sources. ASHRAE recently published performance measurement protocols for buildings 4. This best practice guide recommends Leq in db(a) be used to assess the extent of dissatisfaction with background noise in existing buildings. The A-weighted sound pressure level has limited value when diagnosing the cause of a noise complaint or for use as a design target because it provides no information on the frequency content of the sound. 4 JOHNSON CONTROLS

5 FORM 1.-AG1 ISSUE DATE: 8// GuideLines and Examples Relative Response (db) Frequency (Hz) Room Sound Pressure Level (db ref. µ-pa) Octave Band Center Frequency (Hz) Room Lp NC- NC- NC- NC- NC- NC- NC- Figure 2 - RELATIVE RESPONSE OF SOUND LEVEL METER A-WEIGHTED FUNCTION Widely used and understood, the Noise Criteria (NC) rating method is a single number that rates octave band sound level spectra. For HVAC systems that do not have significant low frequency, or tonal sound, the NC rating correlates very well with occupant satisfaction. The method consists of a family of criterion curves extending from to 8000 Hz (Figure 3 on page 5). The criterion curves define the limits to octave band sound pressure levels that must not be exceeded to meet occupant acceptance in certain building spaces. For a given sound pressure level measurement, the octave bands are plotted and compared with the NC criterion by a tangency method. Figure 3 illustrates how octave band sound measurements are plotted and compared with the NC curves the highest penetration to an NC curve is the NC rating. Note that the NC curves are only defined in 5 db increments, but it has become customary practice to interpolate between the curves. The room L p plotted in Figure 3 is an NC. NOTE: Plotted L p is for VPCS- WSHP, cooling mode for Example 2. Figure 3 - NOISE CRITERIA CURVES NC curves are useful in diagnosing the cause of noise complaints because the NC curves represent fairly neutral or balance sound spectra. This diagnostic quality also makes the NC curves a useful design tool to assess the results of design phase calculations. This is also why the NC ratings are often referenced in building design guidelines and specifications. DESIGN GUIDELINES On some projects, there are regulatory requirements that limit building noise levels. These limits are written in local building codes required for occupancy permits or there may be indirect limits imposed through insurance companies or financial institutions for resale of the property. ASHRAE has established design guidelines for background sound in buildings for various types of rooms served by HVAC systems. Table 1 on page 6 summarizes design guidelines for indoor sound found in the ASHRAE Handbook 5 and the ASHRAE Performance Measurements Protocol document 4. The NC and dba guidelines are presented as a range, the maximum representing the maximum allowable, the median representing a reasonable design target, and a minimum representing a particularly sound critical application. Only those rooms typical of WSHP applications are listed here. JOHNSON CONTROLS 5

6 GuideLines and Examples FORM 1.-AG1 ISSUE DATE: 8// Table 1 - RECOMMENDED DESIGN GUIDELINES FOR WSHP RELATED BACKGROUND SOUND IN ROOMS ROOM TYPES/APPLICATIONS NC Leq (dba) Apartments & Condominiums Living areas Hotels/Motels Sleeping areas Executive and private offices Office Buildings Conference rooms Teleconference rooms Open-plan offices Hospitals & Clinics Private rooms Wards Schools Classrooms and libraries Chapter of the ASHRAE Application Handbook 5 provides further guidance on how to apply the recommended levels in Table 1. The acceptable noise level depends on the specific use of the space, so the number rating typically represents a range of ±5 db for the design target. For example, residential rooms are listed as NC-. This means that unless there are special circumstances, the background noise should be less than NC. Therefore, a good design target for residential applications is NC to. The Handbook also points out that there is not always a benefit to achieving the lower values, as some background noise maintains a minimum level of acoustic privacy between adjacent occupied spaces. This is particularly important for open-plan offices and some rooms in hospitals where private information is discussed. It should also be a design consideration in rooms where relaxation and sleep are important. A minimum level of background noise is important in these spaces to mask intruding noise from outside or adjacent rooms. In short, the design goal should be sound conditioning, not just noise control. EXAMPLE APPLICATIONS Five example WSHP applications are presented here to illustrate room NC values for various WSHP applications. The examples range from a small hotel room to two-bedroom apartments and condominiums. The examples serve to illustrate differences in room sound levels for various unit applications. As will be shown, the unit location in the building floorplan and the supply configuration can have a significant impact on the sound levels. Table 2 on page 7 shows typical db(a) sound pressure levels and NC values for five example vertical stacked WSHP installations. The NC values were calculated using the published Johnson Controls AHRI Standard 2 sound ratings and methods outlined in the ASHRAE Handbook 5. The calculation methods were verified by testing mock-ups for most unit sizes in the Johnson Controls laboratory in Ajax, Ontario. The test data for the VPCS premium efficiency model is presented in the appendix. The sound is calculated based on typical design and installation practices, and the actual results can vary more than 5 NC points (5 dba) depending on room size and shape, room finishes and furnishings, and the unit model and size. All sound values in Table 2 were calculated using the standard acoustic return-air panel and the standard blower option at low speed. The sound should always be evaluated at the unit s low speed because once the unit cools or heats the space to the desired temperature set point, the occupant will usually adjust the unit to the lowest speed. 6 JOHNSON CONTROLS

7 FORM 1.-AG1 ISSUE DATE: 8// GuideLines and Examples Table 2 - TYPICAL NC VALUES FOR EXAMPLE WSHP INSTALLATIONS 1 Small hotel room, 3 sq ft 3/4-ton unit in corner and single supply grille EXAMPLES MODEL-SIZE MODE NC Leq (dba) VPCS-09 Cooling 2 Luxury hotel room, 5 sq ft 1-ton unit in corner and top supply ducted to two grilles in soffit VPCS- Cooling 3 Small one-bedroom apartment, 7 sq ft 1-1/2 ton unit in corner living area and dual supply grilles to living area and bedroom Living-Kitchen x 11 x 8 Bedroom x 11 x 8 VPCS- VPCS- Cooling Cooling 4 Two bedroom apartment, 800 sq ft, two units 1-1/4 ton unit in corner of living area, top discharge ducted to living/kitchen and bedroom 2. Three supply grilles in living/kitchen space and one supply grille in bedroom 2. Living space x x 8 Bedroom 2 x 11 x 8 VPCS- VPCS- Cooling Cooling 3/4-ton unit in corner of master bedroom, front discharge grilled in bedroom and inlet in hallway. Bedroom 1 (master) x x 8 VPCS-09 Cooling 5 Two bedroom apartment, 10 sq ft, single unit 2-ton unit in corner of living area, top discharge ducted to all rooms. Two supply grilles in living space and one supply grille in each bedroom.. Living space x x 8 Bedroom 2 x 11 x 8 Bedroom 1 (master) x x 8 VPCS- VPCS- VPCS- Cooling Cooling Cooling JOHNSON CONTROLS 7

8 GuideLines and Examples Example 1 A typical 3-sq ft hotel room is shown in Figure 4 on page 8. A 3/4-ton vertical unit is located in the corner with a single supply grille. The inlet panel and supply grille is installed facing the short dimension of the room. The room finishes consist of concrete floor/ ceiling construction with medium carpet on the floor and 1/2-inch gypsum board with metal studs on all walls. The window has drapes covering approximately 5 linear ft. FORM 1.-AG1 ISSUE DATE: 8// inlet faces the short dimension of the room. The room has medium carpet on the floor and 1/2-inch gypsum board on all walls and ceiling. The window has drapes covering approximately 8 linear ft. Figure 5 - EXAMPLE 2: LARGE HOTEL ROOM, 5 SQ-FT, 1-TON UNIT, TWO SUPPLY GRILLES LD1 LD0 Figure 4 - EXAMPLE 1: SMALL HOTEL ROOM, 3 SQ-FT, 3/4-TON UNIT, SINGLE SUPPLY GRILLE The sound 6 feet from the unit is NC for the premium efficiency unit. When interpreting these results, the reader should understand that 6 feet from the unit is a worst case assumption of where the occupant will be in the room. For example, at feet from the unit, the NC values will be about 3 points less. This is one of the lowest cost installations and as might be expected, one of the noisiest. For these low cost installations, the unit should always be positioned as far from the occupant as possible. For a hotel room, the unit should be located as far from the bed as possible, and at minimum, the unit should be on the wall opposite the head of the bed. Example 2 Figure 5 on page 8 illustrates a 5-sq ft luxury hotel room with a larger 1-ton unit in the corner and the supply ducted to two grilles in a soffit along the long dimension of the room. All ducts are unlined. The unit The sound, calculated 8 feet from the unit, is NC for the premium efficiency unit. Just a short section of unlined duct can significantly reduce the discharge sound. However, the sound 8 feet from the unit is still dominated by the inlet, so little improvement in room sound is achieved. This installation could be improved significantly if the unit is placed in an insulated closet with the unit inlet facing 90 degrees from an architectural louver. This design concept is discussed further in the next section (see Figure 9 on page 11). Example 3 Figure 6 on page 9 illustrates a 7 sq-ft one bedroom apartment, with a 1-½ ton unit in the corner of the living area with dual supply grilles, one to living area and the other to the bedroom. The unit inlet faces the short dimension of the room. The living space has wooden floors and ½ gypsum board on the walls and ceiling. The bed room has medium carpet on the floor and ½ gypsum board on all walls and ceiling. The air from the bedroom is returned to the unit via an undercut door. Alternately, a through the wall transfer silencer can be used with grilles. Both rooms have drapes covering about 6 linear ft. The sound pressure 8 JOHNSON CONTROLS

9 FORM 1.-AG1 ISSUE DATE: 8// level was calculated 8 ft. and 6 ft. from the unit in the living area and bedroom, respectively. GuideLines and Examples Another 3/4-ton unit is located in a corner of master bedroom with a rear discharge grille to the bedroom and inlet in hallway. The master bedroom returns air to the unit via an undercut door or through the wall via a transfer silencer. The bedroom has medium carpet on the floor and 1/2-inch gypsum board on all walls and ceiling with drapes covering approximately 4 linear ft. The sound pressure level was calculated 6 ft from the supply grille. Figure 6 - EXAMPLE 3: SMALL ONE BEDROOM APARTMENT, 7 SQ-FT, 1-1/2 TON UNIT, DUAL SUPPLY GRILLES LD2 The sound calculated in the living area is NC for the premium efficiency unit, while the sound in the bedroom is NC for the premium efficiency unit. This is one of the lowest cost installations for an apartment and, as might be expected, one of the noisiest. Example 4 Figure 7 on page 9 illustrates an 800-sq ft two bedroom apartment with two WSHP units. A 1-1/4 ton unit is located in the corner of the living area with top discharge ducted to three grilles in the living/kitchen area and to one grille in bedroom 2. The ducts are unlined and located in soffits. The small bedroom returns air to the unit via an undercut door or through the wall via a transfer silencer. The living space has wooden floors and 1/2-inch gypsum board on the walls and ceiling. The bedroom has medium carpet on the floor and 1/2-inch gypsum board on all walls and ceiling. Both rooms have drapes covering approximately 6 linear ft. The sound pressure level was calculated 6 ft from the unit in the living area and 6 ft from supply grille in the bedroom. LD3 Figure 7 - EXAMPLE 4: TWO BEDROOM APARTMENT, 800 SQ-FT, 1-1/4 TON UNIT AND 3/4- TON UNIT The sound in the living area is NC for the premium efficiency unit. The sound is dominated by the unit inlet. The small bedroom sound is NC for the premium efficiency unit. The master bedroom sound is NC for the premium efficiency unit. A good option to reduce the sound in the master bedroom would be to use a few feet of acoustically lined duct to a grille. JOHNSON CONTROLS 9

10 GuideLines and Examples Example 5 Figure 8 on page 10 illustrates a 10-sq ft two bedroom apartment with a single 2-ton unit in the corner of the living space. The top discharge is ducted to all rooms with two supply grilles in the living space and one supply grille in each of the bedrooms. The ducts are unlined and located in soffits. The bedrooms return air to the unit via an undercut door or through the wall via a transfer silencer. The living space has wooden floors and 1/2-inch gypsum board on the walls and ceiling. The bedrooms have medium carpet on the floor and 1/2-inch gypsum board on all walls and ceiling. Both rooms have drapes covering approximately 10 linear ft. The sound pressure level was calculated 6 ft from the unit in the living area and from the supply grilles in the bedrooms. Figure 8 - EXAMPLE 5: TWO BEDROOM APARTMENT, 10 SQ-FT, 2-TON UNIT LD4 The sound calculated in the living area is NC for the premium efficiency unit. The sound is controlled by the unit inlet. The two bedrooms are NC for the premium efficiency unit. INSTALLATION GUIDELINES Many noise problems with vertical WSHP units can be avoided by properly selecting, locating, and installing the components of the system. These details are discussed now. FORM 1.-AG1 ISSUE DATE: 8// Smaller units (3/4 to 1-1/4 tons) typically have the return and supply in the same room. The supply is usually a single or dual horizontal discharge with grille. The smaller units benefit most from the patent-pending isolated quiet chassis. The chassis isolation reduces the audible tones from the compressor, improving the sound quality of the unit inlet. The unit discharge sound is very sensitive to the unit airflow. So, the unit should be sized at the lowest blower speed the quietest operating condition. Larger units (1-1/2 to 3 tons) will typically have a top discharge ducted to a large room or to multiple rooms. As with the smaller size units, the discharge sound is very sensitive to the unit airflow. So, the unit should be sized at the lowest blower speed, and ducts should be sized for low flow. For top discharge duct connections, the duct should be connected to the unit via a flexible collar. Use square elbows and branch Ts without turning vanes. Good results can be achieved without acoustical lined ducts, but for very sound sensitive applications like bedrooms, use lined acoustic ducts. A 1-inch acoustical liner is recommended for the first 5 feet of duct. One should note that AHRI Standard 2 ducted discharge sound ratings are often much higher than free discharge sound ratings in the lower frequency bands because the end reflection loss from the test duct is added to the test results. However, the supply ductwork and grilles add this sound insertion loss and more back into the system. So, the sound radiated from the ducted supply grilles is usually much lower than that of the unit s free discharge. For all applications, the unit should be located as far as possible from the occupants, typically in the corner of the room. Units supplying multiple rooms should be located in closets, corridors, or entry areas that are less sound sensitive. In bedrooms, the unit should always be located farthest from where the bed would typically be located and on the wall opposite the head of the bed. Units are typically concealed behind a gypsum wall constructed with separate studs. Loose fiberglass insulation has little effect of the sound transmitted through wall and is not always necessary. Avoid screwing gypsum board directly to the unit. This will compromise the sound performance of the unit. Mount the unit on 1/2-inch thick vibration isolation pads to reduce transmission of vibration into the floor. Water lines should be connected via flexible, braided hose. All supply ducts should be connected with flexible couplings. 10 JOHNSON CONTROLS

11 FORM 1.-AG1 ISSUE DATE: 8// GuideLines and Examples For very sound sensitive applications, the unit can be installed in a small closet with the unit inlet facing 90 degrees away from a return air louver, as illustrated in Figure 9 on page 11. Adequate clearance around the unit is need for airflow, and a solid door or removable trim panel should be provided to allow access to the unit for filter changes and possible removal of the compressor chassis for servicing. Loose fiberglass insulation inside the closet is recommended for this installation. Architectural Louvers FINAL COMMENTS The above examples show that acceptable background sound for WSHP applications requires thoughtful design and installation practices, together with credible sound ratings from the equipment manufacturer. This is why Johnson Controls chooses to test and publish sound according to AHRI Standard 2. This guide is not a substitution for a qualified acoustical consultant or mechanical engineer. Design professionals can draw upon their experience with other projects and can usually recommend creative methods to further improve the room sound. Access to Unit LD5 Figure 9 - RECOMMENDED INSTALLATION FOR SOUND SENSITIVE APPLICATIONS REFERENCES 1. ASHRAE Fundamentals Handbook, Chapter 8, Sound and Vibration. ASHRAE, Atlanta, GA. 2. M. Schaffer, A Practical Guide to Noise and Vibration Control for HAVAC Systems. ASHRAE, Atlanta, GA (05). 3. Air-Conditioning,, and Refrigeration Institute (AHRI), Arlington, VA, 4. C. Eichelberger, IEQ/Acoustics, Performance Measurement Protocols for Commercial Buildings: Best Practices Guide, ASHRAE, Atlanta, GA, (). 5. ASHRAE Handbook, HVAC Applications, Chapter, Noise and Vibration Control. ASHRAE, Atlanta, GA. JOHNSON CONTROLS 11

12 GuideLines and Examples FORM 1.-AG1 ISSUE DATE: 8// THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS

13 FORM 1.-AG1 ISSUE DATE: 8// APPENDIX AHRI-2 SOUND RATINGS - VPB SERIES, VERTICAL STACKED WATER SOURCE HEAT PUMP Table 3 - DUCTED DISCHARGE CONFIGURATION - TOP, STANDARD BLOWER FREE INLET WITH ACOUSTIC PANEL re Octave Band Sound Power Level (db 1-pW) DUCTED DISCHARGE TOP re Octave Band Sound Power Level (db 1-pW) MODEL MODE FAN SPEED Cooling Cooling Cooling Cooling Cooling Cooling Cooling NOTES: Sound ratings in accordance with AHRI Standard 2-, Sound Rating of Ducted Air Moving and Conditioning Equipment Sound testing in accordance with AHRI Standard 2-, Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment. Water and air temperatures at ISO Standard 1-1 thermal rating points for cooling and heating modes. All test data at unit external static pressure of 0.1 iwg. Sound test data at other operating points and discharge configurations are available with the JCI selection program. JOHNSON CONTROLS

14 Appendix FORM 1.-AG1 ISSUE DATE: 8// AHRI-2 SOUND RATINGS - VPB SERIES, VERT STACKED WATER SOURCE HEAT PUMP (CONT D) Table 4 - FREE DISCHARGE CONFIGURATION - SINGLE FRONT GRILLE, STANDARD BLOWER FREE INLET WITH ACOUSTIC PANEL FREE DISCHARGE, FRONT WITH GRILLE DUCTED DISCHARGE TOP MODEL MODE FAN SPEED Cooling Cooling Cooling Cooling 8 6 Cooling Cooling Cooling NOTES: Sound ratings in accordance with AHRI Standard 2-, Sound Rating of Ducted Air Moving and Conditioning Equipment Sound testing in accordance with AHRI Standard 2-, Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment. Water and air temperatures at ISO Standard 1-1 thermal rating points for cooling and heating modes. All test data at unit external static pressure of 0.1 iwg. Sound test data at other operating points and discharge configurations are available with the JCI selection program. JOHNSON CONTROLS

15 FORM 1.-AG1 ISSUE DATE: 8// Appendix Table 5 - DUCTED DISCHARGE CONFIGURATION - TOP, HIGH STATIC BLOWER FREE INLET WITH ACOUSTIC PANEL re Octave Band Sound Power Level (db 1-pW) DUCTED DISCHARGE TOP re Octave Band Sound Power Level (db 1-pW) MODEL MODE FAN SPEED Cooling Cooling Cooling Cooling Cooling Cooling Cooling NOTES: Sound ratings in accordance with AHRI Standard 2-, Sound Rating of Ducted Air Moving and Conditioning Equipment Sound testing in accordance with AHRI Standard 2-, Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment. Water and air temperatures at ISO Standard 1-1 thermal rating points for cooling and heating modes. All test data at unit external static pressure of 0. iwg. Sound test data at other operating points and discharge configurations are available with the JCI selection program. JOHNSON CONTROLS

16 Appendix FORM 1.-AG1 ISSUE DATE: 8// AHRI-2 SOUND RATINGS - VPB SERIES, VERT STACKED WATER SOURCE HEAT PUMP (CONT D) Table 6 - FREE DISCHARGE CONFIGURATION - SINGLE FRONT GRILLE, HIGH STATIC BLOWER FREE INLET WITH ACOUSTIC PANEL FREE DISCHARGE, FRONT WITH GRILLE DUCTED DISCHARGE TOP MODEL MODE FAN SPEED Cooling Cooling Cooling Cooling 11 4 Cooling Cooling 11 Cooling 11 NOTES: Sound ratings in accordance with AHRI Standard 2-, Sound Rating of Ducted Air Moving and Conditioning Equipment Sound testing in accordance with AHRI Standard 2-, Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment. Water and air temperatures at ISO Standard 1-1 thermal rating points for cooling and heating modes. All test data at unit external static pressure of 0. iwg. Sound test data at other operating points and discharge configurations are available with the JCI selection program. JOHNSON CONTROLS

17 FORM 1.-AG1 ISSUE DATE: 8// Appendix Table 7 - DUCTED DISCHARGE CONFIGURATION - TOP, STANDARD BLOWER, QUIET CHASSIS FREE INLET WITH ACOUSTIC PANEL re Octave Band Sound Power Level (db 1-pW) DUCTED DISCHARGE TOP re Octave Band Sound Power Level (db 1-pW) MODEL MODE FAN SPEED Cooling Cooling Cooling Cooling Cooling Cooling Cooling NOTES: Sound ratings in accordance with AHRI Standard 2-, Sound Rating of Ducted Air Moving and Conditioning Equipment Sound testing in accordance with AHRI Standard 2-, Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment. Water and air temperatures at ISO Standard 1-1 thermal rating points for cooling and heating modes. All test data at unit external static pressure of 0.1 iwg. Sound test data at other operating points and discharge configurations are available with the JCI selection program. JOHNSON CONTROLS

18 Appendix FORM 1.-AG1 ISSUE DATE: 8// AHRI-2 SOUND RATINGS - VPB SERIES, VERT STACKED WATER SOURCE HEAT PUMP (CONT D) Table 8 - FREE DISCHARGE CONFIGURATION - SINGLE FRONT GRILLE, STANDARD BLOWER, QUIET CHASSIS FREE INLET WITH ACOUSTIC PANEL FREE DISCHARGE, FRONT WITH GRILLE DUCTED DISCHARGE TOP MODEL MODE FAN SPEED Cooling Cooling Cooling Cooling 8 6 Cooling Cooling Cooling NOTES: Sound ratings in accordance with AHRI Standard 2-, Sound Rating of Ducted Air Moving and Conditioning Equipment Sound testing in accordance with AHRI Standard 2-, Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment. Water and air temperatures at ISO Standard 1-1 thermal rating points for cooling and heating modes. All test data at unit external static pressure of 0.0 iwg. Sound test data at other operating points and discharge configurations are available with the JCI selection program. JOHNSON CONTROLS

19 FORM 1.-AG1 ISSUE DATE: 8// Appendix Table 9 - DUCTED DISCHARGE CONFIGURATION - TOP, HIGH STATIC BLOWER, QUIET CHASSIS FREE INLET WITH ACOUSTIC PANEL re Octave Band Sound Power Level (db 1-pW) DUCTED DISCHARGE TOP re Octave Band Sound Power Level (db 1-pW) MODEL MODE FAN SPEED Cooling Cooling Cooling Cooling Cooling Cooling Cooling NOTES: Sound ratings in accordance with AHRI Standard 2-, Sound Rating of Ducted Air Moving and Conditioning Equipment Sound testing in accordance with AHRI Standard 2-, Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment. Water and air temperatures at ISO Standard 1-1 thermal rating points for cooling and heating modes. All test data at unit external static pressure of 0. iwg. Sound test data at other operating points and discharge configurations are available with the JCI selection program. JOHNSON CONTROLS

20 Appendix FORM 1.-AG1 ISSUE DATE: 8// AHRI-2 SOUND RATINGS - VPB SERIES, VERT STACKED WATER SOURCE HEAT PUMP (CONT D) Table 10 - FREE DISCHARGE CONFIGURATION - SINGLE FRONT GRILLE, HIGH STATIC BLOWER, QUIET CHASSIS FREE INLET WITH ACOUSTIC PANEL FREE DISCHARGE, FRONT WITH GRILLE DUCTED DISCHARGE TOP MODEL MODE FAN SPEED Cooling Cooling Cooling Cooling 11 4 Cooling Cooling 11 Cooling 11 NOTES: Sound ratings in accordance with AHRI Standard 2-, Sound Rating of Ducted Air Moving and Conditioning Equipment Sound testing in accordance with AHRI Standard 2-, Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment. Water and air temperatures at ISO Standard 1-1 thermal rating points for cooling and heating modes. All test data at unit external static pressure of 0. iwg. Sound test data at other operating points and discharge configurations are available with the JCI selection program. JOHNSON CONTROLS

21 FORM 1.-AG1 ISSUE DATE: 8// NOTES JOHNSON CONTROLS

22 P.O. Box, York, Pennsylvania USA 5- Copyright by Johnson Controls Form 1.-AG1 (8) Issue Date: August, New Release Subject to change without notice. Printed in USA ALL RIGHTS RESERVED