YSM Air Handling Units YSM

Transcription

1 YSM Air Handling Units YSM

2 On the cover Integrated professional services designed for your unique business need. 2 We care about your business and understand that each business has its unique requirements. Our all-encompassing maintenance package is tailor-made to fit your every financial and technical need. It covers from planned routine equipment inspections and predictive maintenance routines to system performance checks and annual shutdowns.

3 YSM Air Handling Units YSM double skin air handling unit (AHU) can meet diversified requirements of high capacity air conditioning application. 40 standard unit sizes are available for choice, with air flow ranging from 1,200 ~ 99,180m 3 /h and up to 1000Pa maximum external static pressure. Simple and efficient design is based on 95mm Module (M). For quick and efficient solution, our selection program can select size and parameter, and to bring about optimization design. For special requirements, please contact our local office. YSM air handling unit uses special extruded aluminium profile posts which break the thermal bridge, reinforced plastic triaxial angle lug, flush fitting panels and doors, and has a smooth surface and attractive profile. All panels and doors can be easily assembled and disassembled due to unique lockable device achieved by a reliable PVC strip. Filters can meet diversified requirements due to a wide range of filtration classes and materials, and filter frames are withdrawable, which makes them easy to access for inspection and cleaning. Water coil is manufactured from copper tubes with aluminium fins. Heat source can be hot water, eletricity or steam. "Dry Drain Pan" design allows quick and easy drainage of condensate water. Combined Mixing Box 25mm or 50mm Double Skin Panel Optional Filter Chilled Water Coil Hot Water/Steam Coil or Electric Heating Forward or Backward Curved Centrifugal Fan Unit Base Frame Special Panel Locking Device Lifing Eyes Unique AL Profiled Frame Nomenclature YSM 25 M H H CC L Double Skin AL Extruded Post Central Station AHU Thickness of the panel is 25mm or 50mm Module of Length/Width/Height is 95mm (M) Height Module 5M Width Module 7M Left Hand (L) or Right Hand (R) Fan Arrangement Horizontal Discharge (H) or Top Discharge (V) Horizontal Type (H) or Vertical Type (V) 3

4 Design Features Industrial leading technology - Nano-TiO2 healthy air sterilizer (optional) Johnson Controls is committed to providing comfortable and healthy living and working environment for all our customers. Whilst caring and safeguarding the natural environment outside. With indoor air quality becoming a crucial global health concern, our unique Nano-TiO2 healthy air sterilization technology, can help remove almost all airborne germs and pathogens, ensuring healthy and fresh indoor air supplies. By oxidizing and decomposing the harmful substances in the air, YORK Nano-TiO2 healthy sterilization technology kills airborne germs, eliminates bad odors, and other harmful particles safely and efficiently. Biological pollutant - e.g. bacteria and germs Molds, fungi Inorganic gaseous pollutant - e.g. NOx, SOx Smoke and offensive odours Organic pollutant - volatile organic compounds (VOCs) e.g. formaldehyde, benzene Nano-TiO2 Disinfection Technology YORK Nano-light UV-A Emits UVA waveband for optimal germ-killing efficiency Harmful substances & pathogen in the air Bacteria, Viruses Mold, Fungi NOx, SOx Purified Air An environmentally safe and effective air purification solution When TiO2 is exposed to low-intensity ultraviolet rays (UV-A), a reaction occurs which generates hydroxyl radicals (OH) and super-oxide ions (O2.-). Hydroxyl radicals (OH) are very powerful oxidizing agents which quickly react to the carbon and hydrogen components of pollutants and decompose them into harmless carbon dioxide (CO2) and water (H2O). The YORK Nano-TiO2 photocatalytic process is highly efficient at generating free hydroxyl radicals (OH), which makes it highly effective in eliminating airborne pollutants such as microorganisms and volatileorganic compounds (VOCS). * This system was tested by the following reputable institutes and organizations: High efficiency in killing germs The Hong Kong Polytechnic University, Report No. P The Productivity Council of Hong Kong, Report No The Detection Centre of Microbiology, Guangzhou, PRC, Report No. FM0644 VOCs Odors Dust Nano-TiO2 Disinfection Technology Disinfection & TVOC removal efficiency over Bacteria level 6-8 hours Nano-TiO2 healthy air sterilization technology contains the following features: YORK is the first brand in the industry to apply Nano-grade TiO2 technology to fan coils, residential and commercial central air conditioners, and residential split units. Nano-grade TiO2 has been recognised in 125 countries and is patent-pending TiO2 photo-catalysis not only filters bacteria but also kills them The ultraviolet light (UVA) in Nano-TiO2 Healthy Air Sterilizer is designed to be durable, lasting up to 10,000 hours 4

5 YSM Air Handling Unit Features Nature Elegance Designed with flush panels and doors, forming a smooth continuous surface, showing a clean and pleasant appearance with no fixings. High Intensity Casing Extruded 2mm thickness, AL profile joined reinforced plastic triaxial angle lug, forming the structural frame to house all internal components and able to comply with EN1886 class 2 mechanical strength. (under the design condition, the deflection is less than 4mm/m) Air Tightness Provided with a combination of hollow neoprene gaskets and PVC seals, to ensure air leakage rate not greater than 1%, and able to comply with EN1886 class B, and to be equivalent to GB/T clean air conditioning requirement. Better Heat Insulation Double skin construction is provided by "sandwich" type 25mm or 50mm thick panels comprising 0.5mm thick inner and outer galvanized steel skins and Zero ODP & Zero GWP polymerized polyurethane foam with 40kg/m 3 density, providing a thermal conductivity coefficient of Profile Triaxial angle lug W/m k. Thermal Bridge Free Design Patent structure of thermal bridge free design is applied in YSM series. New AL profile, reinforced plastic triaxial angle lug and specially designed door make heat insulation more efficient and appearance more beautiful, and thermal bridge factor is better than EN1886 class TB2. Durability Corrosion protection through Al profiles, high quality galvanized steel, absence of welding and use of special treated steel screws, nuts and bolts. Flexibility Designed to use standard components, based on international modular size, thereby giving complete application flexibility. "Dry Drain Pan" Design All segments requiring condensate water draining can have a special design - "condensate draining", and allows quick and easy drainage of condensate water. Easy Installation Clamps and bolts are used to joint segments on site reducing erection time. Unit with split segments shall be provided with gaskets and sealing material as well as connection clamps to permit quick and airtight assembly. Unit is mounted on a base frame made by thick galvanized steel, and ensure entire stability and permit easy lifting, handling and positioning on site. Easy Access An ingenious patent system, which using lockable AL profile and PVC tubular strip, ensures the fastening of all panels and their easy dismantling for good service and maintenance. Excellent Sound Reduction Double skin panel with high density polymerized polyurethane foam has excellent sound reduction performance, and reduce noise level of equipment room effectively. The parameters are as follow: Sandwich" panel of galvanized steel sheet or painted steel sheet Neoprene gasket Central Frequency Data HZ Sound Reduction 25mm db(a) Data 50mm db(a) AL reinforcement post PVC panel locking strip AL profiled post Panel fixing profile 5

6 Unit Air flow & Dimensions Coil face Air flow (m 3 /h) Dimensions (mm) Model area Coil face velocity 25mm Thickness 50mm Thickness (m 2 ) 2.0m/s 2.25m/s 2.5m/s 2.75m/s 3.0m/s 3.5m/s 4.0m/s 4.5m/s 5.0m/s H W H W Note: 1. The basic selection of YSM AHU is determined by air flow rate. If coil air face velocity is regarded as the key factor of selection, the following rules should be complied with: - Cooling coil - the maximum air face velocity is 2.5m/s - High latent heat (sensible heat factor less than 0.50) cooling coil- the maximum air face velocity is 2.4m/s - Cooling coil with droplet eliminator - the maximum air face velocity is 3m/s, the velocity of high latent heat cooling coil should be less than 3m/s - Heating coil - the maximum air velocity is 4m/s - Filter - the maximum air velocity is 3.5m/s If filter is the key factor of selection, we should first calculate the area of crossing section of filters, which is required to process the design air flow, then select height and width of an AHU model to ensure AHU is big enough to contain the filters. 2.The height H excludes the height 100mm of base frame and height of damper or flange at top. 3. The width W excludes the dimension of damper or flange at side, piping and humidifier pot etc. 4. The length will vary from segments application, and detailed length refers to segment specifications. 6

7 Specifications Name Notation Sketch (< Air Flow Direction) Length (Module) (For reference only) Optional Air Inlet AI Damper located at front: L=5M Damper located at top or side: L=Dmp_L=5M~32M (Dmp_L is length module following air flow direction at side or top damper, determined by model and damper air flow rate) Damper arrangement Flange Manual damper Motorized damper without actuator Motorized damper with On-Off actuator Access door Moistureproof light Mixing Box Economizer MB EE L=Dmp_L=5M~32M (Dmp_L is max length module following air flow direction at side or top damper, will be determined by model and damper air flow rate) L=EA_Dmp_L +OA_Dmp_L=10M~36M (EA_Dmp_L is length module of exhaust air damper following air flow direction, OA_Dmp_L is length module of outdoor air damper following air flow direction,and it is determined by model and damper air flow rate) Damper arrangement Fresh air ratio Flange Manual damper Motorized damper without actuator Motorized damper with On-Off actuator Access door Moistureproof light Damper arrangement Exhaust air ratio Flange Manual damper Motorized damper without actuator Motorized damper with On-Off actuator Access door Moistureproof light Open Return Filter OF No occupy a separate segment G1/G3/G4/F5 Plate filter TiO2 Sterilizer Without filter (only offer plate filter frame) Spare filter Plate Filter PF L=2M G1/G3/G4/F5 Plate filter Dual plate combination filter Without filter (only offer plate filter frame) Spare filter Pressure difference gauge Bag Filter BF L=4M 300mm Bag filter: L=5M Plate filter+300mm Bag filter: L=6M 500mm Bag filter: L=7M Plate filter+500mm Bag filter: G1/G3/G4/F5 Plate filter; G3/G4/F5/F6/F7/F8 Bag filter 300/500mm Bag filter Single bag filter Plate and bag combination filter Without filter (only offer bag filter frame) Spare filter Pressure difference gauge Sub-HEPA HF L=4M F9/H10 Sub-HEPA filter Without filter Spare filter Pressure difference gauge Heating Coil HC L=3M 1R, 2R L=4M 3R, 4R Note: L is 4M when TPC is 2 at 2R heating coil 1~4R Heating coil Steel/copper header Piping direction 1~2R copper tube with aluminium fin 1~2R steel tube with aluminium fin Cooling Coil CC L=5M~11M 1. It is determined by coil row and combination mode 2. Evaporative humidifier, droplet eliminator installed in coil segment, and no occupy a separate segment 1~12R Cooling coil+1~4r Heating coil 1~12R Cooling coil+1~2r Steam coil Dual cooling coil Steel/copper header Piping direction Droplet eliminator 50/100/150/200mm Evaporative humidifier (EV) Humidifier brand 7

8 Specifications (Continued) Notation Sketch (< Air Length (Module) Name Flow Direction) (For reference only) Vertical Fan & Coil Electric Heater Humidifier Return Fan Supply Fan Empty Sound Attenuator Diffuser Air Outlet TiO2 Sterilizer VC EH HM RF SF ES AT DF AO TA L=7M~20M Determined by cooling coil and supply fan segment length L=3M L=5M Electrode humidifier(el) L=6M Dry steam humidifier(sh) L=6M High pressure spray humidifier(sp) L=6M~8M Electric heat humidifier L=7M~28M Determined by model, fan and motor specification L=7M~31M Determinde by model, fan and motor specification L=2M~10M Select it according to the requirement. L=5M, 7M, 9M, 11M, 13M, 15M Select it according to sound attenuator requirement. L=5M~7M Determinded by model. Damper located at front: L=5M Damper located on top or side_l=dmp_l=5m~32m (Dmp_L is length module following air flow direction, will be determinded by model and damper air flow rate) L=3M Optional Refer to cooling coil and supply fan segments Heating input power Manual/ electric switch for dry steam humidify Humidifier Brand Fan brand Motor Band Motor location Return air inlet location and type Access door Moistureproof light View port Fan brand Motor brand Fan discharge Motor location Access door Moistureproof light View port Access door Moistureproof light Flange Damper Access door Moistureproof light Damper arrangement Flange Manual damper Motorized damper without actuator Motorized damper with On-Off actuator Access door Moistureproof light Unit length calculation Overall length For 25mm unit: Overall length = Unit overall length module L No. x 95mm +split shipped No. x 58mm For 50mm unit: Overall length = Unit overall length module L No. x 95mm +split shipped No. x 108mm Delivery section length For 25mm unit: the delivery length of each split = L No. in each split x 95mm +58mm For 50mm unit: the delivery length of each split = L No. in each split x 95mm +108mm Note: Width module W not larger than 20M, maximum split length module L is 36M Width module W not less than 20M, maximum split length moduler L is 21M Height module H not less than 24M, unit is shipped by completely knock-down The length is only for your reference. Please contact Johnson Controls' local office for detailed dimension. 29 or or 54 Overall Length Overall unit height (without VC) = unit height module H No. x 95mm + 58mm (or 108mm) + 100mm Overall unit height (with VC) = unit height module H No. x 2 x 95mm + 58mm x 2 (or 108mm x 2)+100mm For example: one YSM50 unit with length module 28M, is divided into 2 segments, one is 12M, another is 16M Then overall length is 28 x x 108=2876mm Delivery length of each segment is 12 x = 1248mm, 16 x =1628mm Split principle Split at upstream of EE/RF/SF/ES/DF/AO, split at downstream of AI/MB/EE/BF/ES/DF. EE can be divided at upstream or downstream, and even can be divided in the middle. EE segment can be divided into two separate segments to deliver. If there is any segment next to downstream of RF or SF, RF or SF and segment at its downstream must be divided into two separate segments to deliver. If there is any segment (except OF) at upstream of VC, VC and segment at its upstream must be divided into two separate segments to deliver. If there are two CC segments, they must be divided into two separate segments to deliver. Any segment together with OF can't be divided. arrangement principle AI/MB/OF can be located in most upstream only AO/VC can be located in most downstream only. Diffuser segment can be only located next to downstream of RF or SF. SP of HM can't be choosed if HM is not next to downstream of CC or VC is next to downstream of HM. RF is necessity if EE is choosed. Besides, EE must be at downward air flow side of RF. SF or VC must be choosed if RF choosed, and SF or VC must be at downstream of RF. SF and VC can't be choosed in one unit. In order to facilitate maintenance, at least 5M maintenance space is needed next to upstream or downstream of PF/BF/HF/TA. There are spare upstream maintenance space in AI/MB/DF/EE/ES; And spare downstream maintenance space in EE/RF/SF/ES/AO; The length of ES with access door can't be less than 5M. At least G3 and above filter segment is needed before TiO2 sterilizer segment. 100mm 8

9 s Specifications & Illustration Air Inlet / Mixing Box / Air Outlet / Economizer Application Air inlet segment - it is linked with return air duct, and supply return air into air handling unit Mixing box - it can adjust the proportion of return air and outdoor air to satisfy the need of air conditioning environment. Air outlet segment - it is linked with supply air duct, and supply air to air conditioning systems. Economizer segment - it can adjust the proportion of return air, outdoor air and exhaust air to satisfy the needs of air conditioning environment. Damper arrangement and construction Damper is opposed blades, with motor driven or manual controlled link rod. Blades are made of galvanized steel sheet or AL, move smoothly in the opposite direction and lubrication free. Damper is equipped with 40mm drilled flange. Damper size Optional damper dimension module (Mdl_X, Mdl_Y) is matched with YSM module. For example, 7Mx9M damper can be positioned at the front of YSM0709 or above models. Mdl_X/Y is same as height module H or less than height module H-4 at height. Option manual 90 or electric driver Unit Width Module W 7M 9M 11M Mdl_X/Y 7 9, 5 W, W-4-2n Note: 1. If a damper located at the side of AHU, the width (Mdl_Y) will determine the length of AHU segment (Damper required to be installed in the casing which length module not less than width module of damper). To minimize the length size and cost of AHU, it is recommended to maximize the length of damper, rather than the width. 2. Because of high volume of return air, it is recommended to position the return air damper at the front of unit for the above reason. If no damper is needed, you can only choose flanged opening. 3. Please contact our local office for detailed damper dimension. Mdl_X/Y logic at width is as follow (n is number such as 0,1,2) Damper dimension Mdl_X/Y 05M 06M 07M 08M 09M 10M 11M 12M 13M 14M 15M 16M 17M 18M 19M 20M Damper Max Dimension(mm) Xmax Ymax Mdl_X/Y 21M 22M 23M 24M 25M 26M 27M 28M 29M 30M 31M 32M 33M 34M 35M 36M Damper Max Dimension(mm) Xmax Ymax Note 1. Damper dimension X can be subtracted multiplier of 190 from Xmax. Y can be subtracted multiplier of 100 from Ymax. 2. Damper dimension design is based on air velocity and pressure drop. Noise generation should be increased with air velocity increasing. As a rule of thumb, damper selected with air velocity less than 10m/s will not contribute any significant noise to AHU sound levels in general.6.5m/s is recomended to be used based on cost and performance. 9

10 s Specifications & Illustration (Continued) Filter Type Pre fileter, it includes plate type and bag type. The filtering material uses non-woven fabric or thermal bonding chemical fiber, filtration efficiency is G1~G4. Medium/high-medium filter, it includes plate type and bag type. The filtering material uses superfine fiber and adopts melt-blown fabric produced by up-to-date technology as the enhanced protective layer of filtering medium, filtration efficiency is F5~F8. Sub-HEPA filter uses densely folded superfine glass fibre, filtration efficiency is F9~H10. Activated carbon filter, made of multifarious organic chemical fiber and carbonized media, can be used to eliminate odors and low density gas-phase pollution source in the air. Filter Quantity Unit Unit Size Size "x12"(290x290) 290x "x20"(290x492) 290x "x24"(290x595) 290x Plate, bag 20"x12"(492x290) 20"x12" 492x Plate, bag type type filter 20"x20"(492x492) 492x492 - filter quantity quantity 20"x24"(492x595) 492x "x12"(595x290) 595x "x20"(595x492) 595x "x24"(595x595) 595x Unit Unit Size Size "x12"(290x290) 290x "x20"(290x492) 290x "x24"(290x595) 290x Plate, bag 20"x12"(492x290) 492x type Plate, filter bag type 20"x20"(492x492) 492x492 - filter quantity quantity 20"x24"(492x595) 492x "x12"(595x290) 595x "x20"(595x492) 595x "x24"(595x595) 595x Note: 1. Plate filters have same direction, as direction of 12"x20" and 20"x12", 12"x24" and 24"x12", 20"x24"and 24"x20" are the same. Bag filters have direction, and first dimension is the direction of bag height. 2. Plate and bag type filters have the same cross section area but different thickness. The thickness of plate type is 46mm, whereas 300mm or 500mm for bag type filter. 3. External positioned plate type filter can be side access and internal arranged filter can be front access. China, United States & Europe efficiency specification comparison China GB/T14295 U. S. ASHRAE Europe New specification Europe Old specification Premium efficiency 5μm Medium efficiency 1μm High-medium efficiency 1μm Sub-HEPA efficiency 0.5μm HEPA efficiency 0.5μm 80% > Efficiency 20% 70% > Efficiency 20% 99% > Efficiency 70% 99.9% > Efficiency 95% Efficiency 99.9% C2- C1 L5 L6 L7 L8 M9 M10 M11 M12 M13 M14 H12~H16 VH17 VH18 VH19 VH20 C4 G1 G2 G3 G4 F5 F6 F7 F8 F9 H10 H11 H12 H13 H14 V15V17 65% 80% 80%~90% >90% 40% 60% 90% 90% 85% 95% 99% 99.90% 99.95% % % EU1 EU2 EU3 EU4 EU5 EU6 EU7 EU8 EU9 EU10 EU11 EU12 EU13 EU14 10

11 Cooling and Heating Coil Cooling and heating coil are made of mechanically expanded copper tubes with aluminium fins. The coil is framed by galvanized steel. Steel or copper header has connector with male thread, drain and vent ports. Coil are tested under 30bar pressure. The maximum design working pressure is 15bar. Painted galvanized steel drain pan is "Dry Drain Pan", which can ensure complete drainage. Droplet eliminator can be provided as an option and to avoid condensate splash out of coil. (Eliminator should be installed when the coil velocity is between 2.5m/s and 3m/s) Optional steam coil uses thickened copper or steel tube with aluminium fin, and maximum design working pressure is 4bar. Water coil connection pipe sizes(mm) Rows TPC Tube High Row Rows Rows Rows Rows Rows Rows Rows Rows Note: 1. Coil header connector is male thread. Below is corresponding English unit diameter. Metric/mm 34mm 48mm 60mm 76mm 89mm English/inch 1" 1-1/2" 2" 2-1/2" 3" 2. Condensate connector is 48mm OD male thread pipe connector. 3. For model size of 2020 (including 2020) or above, the coils have two water-in and two water-out connection. 4. TPC: Tube quantity of each circuit, the formula as follows: Tube Highx Rows TPC= Circuits SQ Option Copper fin Water inlet/outlet flange connection Hydrophilic-coated Aluminium fin Water coil tube height list Model Tube High Steam coil connection pipe sizes(mm) Model Rows 1 Row 2 Rows Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower

12 s Specifications & Illustration (Continued) Cooling Capacity Table Inlet air DB/WB: 27 C/19.5 C Inlet air DB/WB:35 C/28 C Model Air flow 4 Rows 6 Rows 8 Rows 4 Rows 6 Rows 8 Rows m 3 /h Sensible Total Sensible Total Sensible Total Sensible Total Sensible Total Sensible Total heat kw heat kw heat kw heat kw heat kw heat kw heat kw heat kw heat kw heat kw heat kw heat kw Note: 1. Chilled water inlet and outlet temperature:7 C / 12 C, coil face velocity is 2.5m/s; 2. Cu tube and AL fin coil with 10FPI; 3. The above is only for reference. Different coil circuit will lead to different cooling capacity. Please contact our local office for detailed data 12

13 Heating Capacity Table Inlet air DB: 15 C Inlet air DB:-4 C Model Air flow Total heat kw Total heat kw m 3 /h 1 Rows 2 Rows 4 Rows 1 Rows 2 Rows 4 Rows Note: 1. Hot water inlet and outlet temperature:60 C / 50 C, coil face velocity is 2.5m/s; 2. Cu tube and AL fin coil with 12FPI; 3. The above is only for reference. Different coil circuit will lead to different heating capacity. Please contact our local office for detailed data. 13

14 s Specifications & Illustration (Continued) Electric Heating (Option) Eelectric heater comprises heating element, using low-temperature stainless steel tube with scrolll fins, and temperature protection switch, etc. Electric heating part is fixed on the frame. Electric control box is supplied and installed by the user. And its control must be interlocked with the fan. Feature 1-4 steps control, to satisfy multiple needs of heating power; Overheating protection, temperature protection switch, fixed inside, can shut off when overheating. SQ Option Electric heating control box Notice Connect the line according to the electric drawing, can't miss-connection and wrong-connection, Examination should be periodically executed to ensure the temperature protection switch operate normally and avoid protection invalidation when overheating. Ensure the fan has been turned on before running the electric heater, and the electric heater should be closed 5 minutes before the fan is shut down. Fan Fan segment can be equipped with a double width, double inlet, forward or backward curved blade centrifugal fan. Fan inlet cone is designed according to the requirement of aerodynamic performance, impeller has been statically and dynamically balanced. The bearings of small fan are pre-lubricated, sealed, and lubrication is free for lifetime. The bearings of large fan are thrust type, with self-adjusting journal and lubrication points in the housings. Fan driven device (V belt) is selected and installed by factory, it can meet the need of performance. Motor is TEFC type, class B or F insulation and IP54 or IP55 protection. Standard motor is 2/4/6 poles and single speed, with power supply of 380V-3PH-50Hz, 380~415V-3PH-50Hz or 230/380/460V-3PH-60Hz. Fan and motor are installed on an independent base frame, with spring vibration isolators. VSD motor is available for all series power supply. Converter, starter and VSD motor are standard options at 380V-3PH-50Hz. Please contact our local office about fan segment selection. SQ Option Two speed motor (2/4,4/8,4/6,6/8 poles) Fan arrangement Air Inlet Note: The air inlet direction of fan is shown as above. 14

15 Sound Attenuator (Option) Sound attenuator uses galvanized steel as frame, non-hygroscopic and anticorrosive superfine fiber glass as inner lining acoustic absorbent, with perforated skin as protective cover of lining material. Standard length of sound attenuator segment is ranging from 5M,7M,9M,11M,13M,15M with 6 kinds of different length. Sound attenuator segment parameter Noise reduction db(a) Model Sound attenuator segment length 5M 7M 9M 11M 13M 15M Note: 1. Noise reduction in above table is sound pressure level, and it applies to the condition when the maximun face velocity of sound attenuator segment is less than 4m/s. 2. When sound attenuator segment is located in the return air side of the unit, noise reduction will reduce 3 db(a). 15

16 s Specifications & Illustration (Continued) Humidifier (Option) Type Dry steam humidifier, it consists of chamber, control valve and nozzle etc., with advantage of compact size, light weight and easy installation. High pressure spray humidifier, it has stainless steel water distributor and nozzles, single row or double rows spray. High pressure water is supplied by pump, removable dirt separator can also be equipped. Electrode humidifier, it consists of humidifier host and steam distributor with high control precision, and it can provide steam humidification without steam source. Evaporative humidifier, with advantage of high saturation efficiency, space saving, cleanness, safety and reliability. Electric heater humidifier,it consists of humidifier box and controller with high control precision, and it can provide steam humidification without steam source. Dry steam humidifier Humidifier is selected according to control method, steam pressure supply, required humidfication load and unit width dimension. High pressure spray humidifier Under the following operating conditions, select suitable humidifier model according to the required humidifying load and technical parameter table: Water supply: City water, purified water or similar water supply; Pressure of water supply: 1~3.5Kg/cm2 Temperature of water supply: 5~40 C Inlet air on velocity: 1~2.5m/s Inlet air on temperature: 20~60 C Electrode humidifier Humidifier is selected according to required humidfication load and unit width dimension. Electric heat humidifier Humidifier is selected according to humidification load. Evaporative humidifier performance Humidifying capacity to fresh air (kg/h) Humidifying capacity to mixed air (kg/h) Model Evaporative humidifier thickness Evaporative humidifier thickness 50mm 100mm 150mm 200mm 50mm 100mm 150mm 200mm Note: 1. Evaporative humidifier includes four kinds of thickness: 50mm, 100mm, 150mm, 200mm, and their humidifying efficiency are 40%,60%,75%,85% respectively. 2. The fresh air inlet condition: DB28 C. 10%RH, air velocity is less than 3.0m/s. 3. The mixed air inlet condition (fresh air ratio 20-30%): DB28 C. 25%RH, air velocity is less than 3.0m/s. 4. Humidifying capacity in table is maximum capacity and based on 3m/s air velocity. Humidifying capacity will reduce a little when air velocity is less than 3m/s. 16

17 Unit Weight Empty Weight Per Length Module kg/m Damper Filter Evaporative Humidifier Sound Attenuator Model Casing 25mm Casing 50mm Droplet of MB Eliminator 5 OF PF BF HF M M M M M M M M mm mm mm mm M M M M M M Note: 1. The weight of total empty segment = Empty Weight Per Length Module (kg/m) x Unit Length Module 2. The above data is estimated. Accurate data can be selected from Yorkworks. 17

18 Unit Weight (kg) Standard 1/2" Coil Weight Model 1 Rows 2 Rows 3 Rows 4 Rows 5 Rows 6 Rows 8 Rows 10 Rows 12 Rows 8FPI 10FPI 12FPI 8FPI 10FPI 12FPI 8FPI 10FPI 12FPI 8FPI 10FPI 12FPI 8FPI 10FPI 12FPI 8FPI 10FPI 12FPI 8FPI 10FPI 12FPI 8FPI 10FPI 12FPI 8FPI 10FPI 12FPI Note: The above data is based on dry condition. 18