VENTILATION AIR CONDITIONING HEATING AIR HANDLING UNITS TECHNICAL CATALOGUE

Transcription

1 VENTILATION AIR CONDITIONING HEATING 6 AIR HANDLING UNITS TECHNICAL CATALOGUE

2 AIR HANDLING UNITS CONTENTS AHU - AIR HANDLING UNITS DESCRIPTION ON TYPES OF SECTIONS HORIZONTAL VERSION - AHU - H Schemes, overall and joined dimensions DOUBLE-DECK VERSION - AHU-DD Schemes, overall and joined dimensions UNIT SECTIONS Schemes, overall and joined dimensions, weight THERMAL CHARACTERISTICS AERODYNAMIC CHARACTERISTICS RECOMMENDATION FOR INSTALLATION FUNCTIONAL SCHEMES FOR MANAGEMENT, CONTROL EQUIPMENT AND AUTOMATION 30

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4 AIR HANDLING UNITS AHU H / AHU-DD AHU AIR HANDLING UNITS Air handling units are modular built for indoor or outdoor installation. Intended to be build in general ventilation and airconditioning systems. Universal application: office buildings, stores, hotels and restaurants, swimming pools, industrial buildings, etc. Depending of the air flow, they could be separated in nine standard sizes from 6000 m³/h to m³/h. Model increased noise requirments regular mode industrial systems Modifications depending on the installations of air handling units: AHU H - horizontal version (air handling unit with mixing and intermediate coolant) (AHU 06 AHU 45H) AHU DD - double deck version with heat exchanger air-air (AHU 06 AHU 24) 3

5 AHU H / AHU-DD AIR HANDLING UNITS Description on types of sections Construction Supporting frame made of special aluminium profiles, connected with aluminium corners. Construction sides are closed with thermo and acoustic insulated panels. In thus structure (UU universal section) are incorporated all necessary elements for air treatment. Side panels Panels made of galvanized sheet steel with powder coating at their external side (RAL7035) and heat and acoustic insulated middle layer. Two versions of side panels are possible: Standard thickness of 25mm for model sizes from AHU 06 to AHU 20 Standard thickness of 50mm for model sizes from AHU 24 to AHU 45H On request - for outdoor installation with thickness 50mm (AHU06 AHU20) Insulation panels made of extruded polystyrene XPS type with density 32 kg/m³, thermal conductivity λ=0.039 W/m K and combustibility class M1. Upon request panels could be made of compressed mineral wool with density kg/m³, thermal conductivity λ=0.037 W/m K and combustibility class M0. The panels are fixed with self-tapping screws or metric bolts. Sides which should be opened for inspection and maintenance are performed as doors, equipped with knuckles and special locks. Revision covers could be fixed to the supporting frame with reamers upon request. Visual inspection is made through manhole incorporated in the panel. Sealing of the panels to the constructions is ensured by strips of self-adhesive cellular rubber. Description on types of sections ВU - Fan section The section consists of centrifugal fan with forward or backward curved impeller. The type of fan is selected depending to the specific requirements, according to the air flow and resistance of the installation: BDB - Belt-driven double inlet centrifugal fan with backward curved impeller, standard version (section 03.07) CBP - Belt-driven double inlet centrifugal fan with forward curved impeller (section 03.08) only for models AHU 06, AHU 09, AHU 12 BPF - Direct-driven single inlet centrifugal fan with backward curved impeller. The impellers made by Soler&Palau are statically and dynamically balanced. Mounted to the frame on anti-vibration mounts, equipped with flexible connection. This avoids the transmission of vibration to the casing. Fans are driven by electrical motor, using belt drive or directly incorporated to the fan. The belts which are used are type B or SPB. Belt pulleys are with fixing bush (hub). For easier belt tension motors are installed on a slider. All motors are three phase 400V/50Hz, protection class IP54, class F insulation and working mode S1 (continuous). Ambient temperature: - 30 C +40 C. Maximum working temperature +60 C and maximum altitude 1000m. 4

6 AIR HANDLING UNITS AHU H / AHU-DD Description on types of sections ТU - Thermal section Include heating and/or cooling section (heat exchanger), drop separator and drain tray. Types of sections (heat exchanger) that could be incorporated (section 02.05): Two-rows (2R) basically used in heating mode. Four-rows (4R) basically used in cooling mode. Six-rows (6R) and eight-rows (8R) could be produced upon request. Heat exchangers Water-air (heating and cooling) are tubular-plate type, made of copper pipes with strung on them aluminium fins with step 2.3mm. Good contact between pipes and fins is achieved by mechanical distension. Incorporated in the section by guides (rails), ensuring the sealing by air. Drop eliminator is a cassette of profiled blades, designed to retain the condensation after the cooling section. Made of special polymer profiles. Drain tray with ½ connection, is mounted at the bottom of the cooling section. Siphon must be ensured. He should be placed before condensation line is connected to the building installation. AFU - Air filter section Air filter section contains one or two consequently mounted air filters with different efficiency from lower to higher class from G2 to F9, according BDS EN 779 (section 02.03). For rough dust several air filter cassettes type AFC-V (class G3) or AFC-Z (class G4) are mounted together. The cassettes slide into the section through glides (rails) and are fixed with profiles and bolt connection. For fine purification filter wall made of several bad filters type AFC-B (class F6 F8). The cassettes are fixed to the filter wall through reamers. Air filter cassettes are disposable, they are consumables for the air handling units. In more specific the section could be completed with other type air filters: reusable metal filters, carbon or absolute filters, class H10 H13. 5

7 AHU H / AHU-DD AIR HANDLING UNITS Description on types of sections СМU - Mixing section Build of one or two universal sections, horizontally or vertically adjoined. Equipped with three dampers (PRJ multiple leaf damper, section 02.09): Outlet (exhaust air) Inlet (fresh air) Mixing mounted between both streams For smooth control is recommended damper with electric motor (actuator) and device for uniform signal control. RU-REC / RU-ROT Recuperative (heat recovery) section Recuperative heat exchanger Air-air incorporated in double deck construction: RU-REC with plate heat exchanger type REC-AL, efficiency 50-61% (section 02.07). RU-ROT with rotary regenerative heat exchanger type RRU, efficiency 67-80%. Heat exchanger section RU-REC is equipped with by-pass damper type PRJ (section 02.09) at the fresh air stream and drain tray at the exhaustion side. By-pass damper is used for defrosting of recuperator in winter and gave the possibility for working in free cooling mode during transitional seasons. The heat exchanger transfer heat only, from the warm to the cold air stream. Suitable for dehumidification of swimming pool installations. Section RU-ROT is provided with rotary aluminium recuparator with motor and control panel. The recuperator transfer heat and moisture between both streams. Suitable for air-conditioning installations at premises without large separation of moisture. Efficiency of heat exchangers depends on their type and specific parameters of the air. Calculated to each individual case. REC-AL ROT 6

8 AIR HANDLING UNITS AHU H / AHU-DD Description on types of sections SAU - Sound attenuators section Build in universal section baffles, placed parallel of the air stream. Baffles made of plates of fiber-glass, wrapped in glass material to prevent atomization, protected by a safety metal grid and frame of galvanized steel sheet. Standard version: SA 10/10 baffles with thickness D=100 mm and distance between baffles S=100 mm effective from 500 to 4000 Hz (middle range frequency). Section length L=1000mm On customers request: SA 10/6 baffles with thickness D=100 mm and distance between baffles S=60 mm effective in high range frequency. SA 20/12 baffles with thickness D=200 mm and distance between baffles S=120 mm effective in low range frequency. Different length of section and baffles: L=500, 1000, 1500 and 2000mm. Sound attenuating section could be replaced by duct mounted sound attenuator type DSA (section 02.01). InU / ExhU - Inlet / outlet sections Sections similar to those described above, equipped with one or more control valves (PJR) with build-in single-stage filter for inlet section or EK-N duct type electric heater. Supporting frame Made of aluminium corners and profiles of galvanized sheet steel with high 100mm. Mounted under each section of onestoreyed units. In double deck version for top row section supporting frame is not provided. To ease the transportation and installation in the supporting frame are provided openings for lift up with mechanization. Options and additional features In air handling units could be incorporated also: Fans with 2-speed motors Fans with direct-drive motors and inverter Heating section with working fluid steam Steam humidifier For outdoor installation: Sections with increased insulation thickness (50mm) for outdoor installation (AHU 06- AHU20) Additional roof covers to lead the rain water Protection guard for direct discharge with net or NJR Precast unit made of hot galvanized profile tube and adjustable in height Steps (feet) for installation on surface with inclination up to 5%. Management, control and automation: Anti-frost protection of water sections Torn belt signalization Dirty filter signalization Electric motor (actuator) for control valves (PJR, PJR-BP) 3-way valves with actuator for heating and cooling sections Automatic defrost of recuperative heat exchanger (REC) and possibility of working in free cooling mode Speed control of the rotary regenerative heat exchanger Air temperature and/or humidity remote tracking Electric board for control and automation 7

9 AHU H / AHU-DD AIR HANDLING UNITS Horizontal version AHU-H Principle scheme 1. ВU - Fan section 2. ТU - Thermal section 3. AFU - Air filter section with two-stage cleaning 4. СМU - Mixing section Overall and joined dimentions Model Air flow V [m³/h] B H L 1 L 2 L 3 L 4.1 b=h c d e AHU AHU AHU AHU AHU AHU AHU 30H AHU 36H AHU 45H f Note: Special sizes and combinations on an individual project. Size L 1 depends on type and position of fan. Size L 2 is related to thermal section, consisting of COT+COX+ drop eliminator. Size L 3 is related to air filter section with two stages filter G3 and F8 For more information, please, see the corresponding sections in our catalogue. 8

10 AIR HANDLING UNITS AHU H / AHU-DD Horizontal version AHU-H Other possible combinations 1. ВU - Fan section 2. TU - Thermal section with build in AFC air filter 3. InU - Inlet section with AFC-V air filter 4. CMU - Mixing section 5. UU - Universal section 6. SAU - Sound attenuating section 7. ExhU - Outlet unit with duct-type electric heater EK-N. 8. BU - Fan section independent box 9. NJZ - External grille 9

11 AHU H / AHU-DD AIR HANDLING UNITS Double-deck version AHU-DD Principles schemes 1. BU - Fan section 2. TU - Thermal section 3. InU - Inlet section with AFC-V air filter 4. RU-REC - Recuperative section with plate heat exchanger 5. RU-ROT - Recuperative section with rotary regenerative heat exchanger 6. InU - Inlet section with two stages of cleaning Overall and joined dimentions Model Air flow V [m³/h] B Hdd H H 1 L 1 L 2 L 3 L 4.2 L 4.3 b h c AHU AHU AHU AHU AHU AHU Note: Special sizes and combinations on an individual project. Size L 1 depends on type and position of fan. Size L 2 is related to thermal section, consisting of COT+COX+ drop eliminator. Size L 3 is related to air filter section with air filter AFC-V G3 For more information, please, see the corresponding sections in our catalogue. d 10

12 AIR HANDLING UNITS AHU H / AHU-DD Double-deck version AHU-DD Other possible combination 1. BU Fan section 2. TU - Thermal section 3. InU - Inlet section with AFC-V air filter 4. RU-REC - Recuperative section with plate heat exchanger 5. RU-ROT - Recuperative section with rotary regenerative heat exchanger 6. SAU - Sound attenuating section 7. ExhU - Outlet unit with bag filter AFC-B 8. UU - Universal section 9. ExhU - Outlet unit with duct-type electric heater EK-N 10. NJZ - External grille 11

13 AHU H / AHU-DD AIR HANDLING UNITS Unit sections BU - Fan section Possible schemes 12

14 AIR HANDLING UNITS AHU H / AHU-DD Unit sections BU - Fan section BU aaa / bc d / ( V / Hсв. ) example from p BU 16 / 32 R / (15500/700) 1. aaa Type and size of the fan ааа - fan type BDB (standard version) ааа А fan type CBP ааа B fan type BPF 2. bc scheme depending on the type and position of the fan (p ): 1c; 2c; 3c; 4c; 5c and 6c - position in section air handling unit (intermediate or ending) b1 fan posotion 90 b2 fan posotion 270 b3 fan posotion 0 3. d air stream direction according to the service side: R from left to right L from right to left 4. V [m³/h] air flow of the fan 5. Hсв. [Pa] necessary external pressure of the fan Overall and joined dimensions, weight Model Fan B H L 1.1 L 1.2 L 1.3 b h e f k N ел. [kw] c BU 06 BDB 355C BU 06A CBP 12/ BU 09 BDB 400C BU 09A CBP 15/ BU 12 BDB 450C BU 12A CBP 18/ BU 16 BDB 500C BU 20 BDB 560C BU 24 BDB 630C BU 30 BDB 710C BU 36 BDB 800T BU 45 BDB 900T BDB 1000T Model Fan B H L 1.4 N el. [kw] Weight Performance scheme c d BU 06B BPF , 62, 63 and BU 09B BPF , 62, 63 and BU 12B BPF , 62, 63 and BU 16B BPF , 62, 63 and BU 20B BPF , 62, 63 and BU 24B BPF , 62, 63 and BU 30B BPF , 62, 63 and BU 36B BPF , 62, 63 and BU 45B BPF , 62, 63 and Note: Dimensions c/d of the inlet / outlet flange (PJR) are valid for all fan sections TM total weight of fan section BU ** / 11(12) - R(L) Nominal power of three phase motor Nel. Aerodynamic and acoustic characteristics, see sections from up to

15 AHU H / AHU-DD AIR HANDLING UNITS Unit sections TU - Thermal section Thermal heating section with 2 or 4 rows water coil unit TU СOT *** / 2R - R(L) as standard TU СOT *** / 4R - R(L) Thermal cooling section with 2, 4, 6 or 8 rows water coil unit with drop eliminator and drain tray TU СOX *** / 2R / К - R(L) TU СOX *** / 4R / К - R(L) as standard TU СOX *** / 6(8)R / К - R(L) - upon request Thermal section with heat exchangers: heating unit: 2- or 4- rows, cooling unit: 2-, 4-, 6- or 8-rows with drop eliminator and drain tray TU *** / 2R / 2R / K - R(L) TU *** / 2R / 4R / K - R(L) as standard TU *** / 4R / 4R / K - R(L) TU *** / 4R / 6(8)R / K - R(L) Thermal section with heat exchangers: heating unit: 2- or 4-rows, cooling unit: 2-, 4-, 6- or 8-rows with drop eliminator and drain tray and air filter AFC-V (G3) TU *** / 2R / 2R / K/ F - R(L) TU *** / 2R / 4R / K / F - R(L) as standard TU *** / 4R / 4R / K / F - R(L) TU *** / 4R / 6(8)R / K / F - R(L) Overall and joined dimensions, weight Model B H L 2.1 L 2.2 L 2.3 L 2.4 Heat exchangers G weight [kg] COT (2R) / COX (4R) 2R 4R 2R 4R TМ TU *** /600 - *R 1¼" 1½" TU *** /800 - *R 1½" 2½" TU *** /800 - *R 1½" 2½" TU *** / *R 2" 2½" TU *** / *R 2" 3" TU *** / *R 2½" 3" TU *** / *R 2½" 4" TU *** / *R 2½" 4" TU *** / *R 2½" 4" Note: R(L) - Air direction from the supply side of water coil unit Weight of a single heat exchanger 2R or 4R TM total weight of TU ** / 2R / 4R / K - R(L) Technical characteristics, see p

16 AIR HANDLING UNITS AHU H / AHU-DD Unit sections AFU - Air filter section Air filter section with single or double-stage cleaning with filter cassettes type AFC-V G3 (G4) and/or bag filters type AFC-B (F6 F8). AFU *** / G4 / HxL - R(L) AFU *** / G4+F8 / HxL - R(L) Other types filter sections upon request CMU - Mixing section CMU *** / HxL - R(L) Overall and joined dimensions, weight Model B H H1 L 3.1 L 3.2 L 4.1 c 1 d 1 e f AFU 06 CMU AFU 09 CMU AFU 12 CMU AFU 16 CMU AFU 20 CMU AFU 24 CMU AFU 30 CMU AFU 36 CMU AFU 45 CMU Note: PJR - multiple leaf damper and electric motor (actuator) in section H1 in double deck version AHU-DD, see p TМ tentative weight of sections with length L=1000mm TM [kg] 15

17 AHU H / AHU-DD AIR HANDLING UNITS Unit sections RU-REU / RU-ROT Recuperative ((heat recovery)) section RU-REC - Recuperative section with plate heat exchanger REC-AL, drain tray and by-pass damper PJR-BP for fresh air RU-REC ** - R(L) / L1(R1) RU-ROT - Recuperative section with rotary regenerative heat exchanger with motor RU-ROT ** - R(L) / L1(R1) Note: Air stream direction from the inspection side: fresh air: R from left to right L from right to left exhausted air: R1 from left to right L1 from right to left Overall and joined dimenstions, weight Model RU-REC RU-ROТ Air flow V B Hdd [m³/h] L 4.2 h A REC AL 0 MT L 4.3 N ROT EL. MT [m 2 ] [kg] [W] [kg] RU-** / RU-** / RU-** / RU-** / RU-** / RU-REC / RU-ROT Note: Heat exchanger must be protected with air filters at both streams RU-REC 06 with incorporated air filter AFC-Z Inlet section of plate heat exchanger А 0 (m²) Drive motor of the rotary regenerative heat exchanger is single-phase with nominal power Nel. MT - weight of the recuperative section Efficiency of the recuperators, see p

18 AIR HANDLING UNITS AHU H / AHU-DD Unit sections SAU - Sound attenuating section SAU ** -10/10 - HxL - R(L) standard version SAU ** -10/6 - HxL - R(L) SAU ** -20/12 - HxL - R(L) UU - Universal section UU ** / HxL - R(L) InU / ExhU - Inlet / outlet sections Inlet section with one or two dampers (PJR) InU *** / 1 - HxL - R(L) InU *** / 2 - HxL - R(L) Outlet section with one or two dampers (PJR) ExhU *** / 1 - HxL - R(L) ExhU *** / 2 - HxL - R(L) Overall and joined dimensions, weight Inlet section with air filter AFC-V G3 (G4) and one or two dampers (PJR) InU *** / 1(2) / F+(F) / HxL - R(L) Model B H H 1 L 5 L 6 L 7.1 L 7.2 SAU 06 InU/ ExhU SAU 09 InU/ ExhU SAU 12 InU/ ExhU SAU 16 InU/ ExhU SAU 20 InU/ ExhU SAU 24 InU/ ExhU SAU 30 InU/ ExhU SAU 36 InU/ ExhU SAU 45 InU/ ExhU Note: For double deck version AHU-DD height of the section is H or H1 MT - weight of the sound attenuating section SAU ** -10/10 - BxHxL=1000mm Dimensions of flange and dampers (PJR) have to be indicated in the order For weight of universal, inlet or outlet sections, please use approximate weight per meter (see р ) MT [kg] 17

19 AHU H / AHU-DD AIR HANDLING UNITS Thermal characteristics СОТ / СОХ - counter-flow, atmospheric pressure mmhg 2-rows section Heating mode Cooling mode Model V air m³/h Т air1 =-12 С, Т water1 =80 С; Т water2 =60 С Q heat [kw] Т air2 [ С] ΔP air [Pa] V water [m 3 /h] P water [kpa] Т air1 =33 С, φ=40%, Т water1 =7 С,Т water2 =12 С Q heat [kw] Т air2 [ С] ΔP air [Pa] V water [m 3 /h] 1000/600-2R /800-2R /800-2R /1000-2R /1000-2R /1200-2R /1400-2R /1600-2R /2000-2R P water [kpa] After recuperator Т air1 =+5 С, Т water1 =80 С; Т water2 = 60 С Т air1 =30 С, φ=45%, Т water1 =7 С,Т water2 =12 С 1000/600-2R /800-2R /800-2R /1000-2R /1000-2R /1200-2R /1400-2R /1600-2R /2000-2R rows section Heating mode Cooling mode Model V air m³/h Т air1 =-12 С, Т water1 =80 С; Т water2 =60 С Q heat [kw] Т air2 [ С] ΔP air [Pa] V water [m 3 /h] P water [kpa] Т air1 =33 С, φ=40%, Т water1 =7 С,Т water2 =12 С Q heat [kw] Т air2 [ С] ΔP air [Pa] V water [m 3 /h] 1000/600-4R /800-4R /800-4R /1000-4R /1000-4R /1200-4R /1400-4R /1600-4R /2000-4R P water [kpa] After recuperator Т air1 =+5 С, Т water1 =80 С; Т water2 = 60 С Т air1 =30 С, φ=45%, Т water1 =7 С,Т water2 =12 С 1000/600-4R /800-4R /800-4R /1000-4R /1000-4R /1200-4R /1400-4R /1600-4R /2000-4R For some specific cases with different inlet parameters, please, contact us. 18

20 AIR HANDLING UNITS AHU H / AHU-DD Efficiency of RU-REC / RU-ROT Initial conditions (parameters): Amounts of fresh and exhausted air are equal V S =V E [m³/h] Atmospheric pressure mmhg 940 hpa Т S1 (T вн. ) = -12 С - fresh air temperature φ S = 80% - fresh air humidity Т E1 (T пом. ) = +22 С - fresh air temperature φ S = 30% - exhausted air humidity RU-REC RU-ROT Model Model increased noise requirment regular mode industrial systems Note : E [%] - efficiency of fresh air For more specific cases and accurate determination of all parameters, please, contact us or use online software REC 01 on our website. 19

21 AHU H / AHU-DD AIR HANDLING UNITS Aerodynamic characteristics of fan BDB *** C BU ** BDB 355 BDB 400 BDB 450 BDB

22 AIR HANDLING UNITS AHU H / AHU-DD Aerodynamic characteristics of fan BDB *** C BU ** BDB 560 BDB 630 BDB 710 Note : For determination of sound level pressure on frequency bands - page For determination of the necessary motor power N EL. - page

23 AHU H / AHU-DD AIR HANDLING UNITS Aerodynamic characteristics of fan BDB *** T BU ** BDB 800 BDB 900 BDB 1000 Note : For determination of sound level pressure on frequency bands - page For determination of the necessary motor power N EL. - page

24 AIR HANDLING UNITS AHU H / AHU-DD Aerodynamic characteristics of fan CBP BU ** A CBP - 12/9 CBP - 15/11 CBP - 18/18 Note : For determination of sound level pressure on frequency bands - page For determination of the necessary motor power N EL. - page

25 AHU H / AHU-DD AIR HANDLING UNITS Aerodynamic characteristics of fan BPF BU ** BD 24

26 AIR HANDLING UNITS AHU H / AHU-DD Aerodynamic characteristics of fan BPF BU ** BD Note : For determination of sound level pressure on frequency bands - page For determination of the necessary motor power N EL. - page

27 AHU H / AHU-DD AIR HANDLING UNITS Aerodynamic characteristics of fan BPF BU ** BD Acoustic characteristics For all types of fans sound pressure level could be defined by the formula: Lw = Lw (A) + K, where: Lw (A) read from the graphics of each fan for specific air flow and pressure (page ) К [db] factor of correction for sound pressure level on frequency bands К [db] factor of correction for sound pressure level Size of section Fan Frequency bands [Hz] BU ** BDB **** BU 06A CBP 12/ BU 09A CBP 15/ BU 12A CBP 18/ BU 06B BU 09B BU 12B BPF 400 BPF 450 BPF 500 inlet outlet BU 16B BU 20B BU 24B BU 30B BU 36B BU 45B BPF 560 BPF 630 BPF 710 BPF 800 BPF 900 BPF 1000 inlet outlet inlet outlet

28 AIR HANDLING UNITS AHU H / AHU-DD Example: BDB 500 Air flow Dynamic pressure Fan speed Efficiency Air velocity Total pressure Absorbed power Sound pressure level Q=14760 m³/h Pd=62 Pa N=1900 min-1 η=78% V=10.07 m/s Pt=1515 Pa Wвен=8.0 kw Lw(A)=90.3 db(a) The necessary motor power is determined by the formula: N el = K 1 Wвен K 2, where: K 1 safety factor to overcome the starting torque K 2 efficiency (for V-belt transmissions K2=0.9) N еl = Absorbed power W [kw] < > 10.0 Safety factor K = kw -> 11.0 kw Sound pressure level [db] on frequency bands [Hz] Model Fan Lw(A) BU ** BDB 500Т 90.3 db Order designation - BU 16 / 33 R / (14760 / - ) (11,0kW) BU 16 - fan section type with fan BDB 500C, Nел=11.0kW / 380V 33 performance scheme (see page ); ending section; fan position 0 R air stream direction the inspection side from left to right m³/h - air flow 15500³/h and total pressure 1515 Pa (11.0kW) - absorbed power different from the nominal

29 AHU H / AHU-DD AIR HANDLING UNITS Recommendation for installation Air handling unit is mounted over a leveled building site (foundation or construction). The site should be sized for the specific camera. Sections are mounted one to another with sealing rubber between them. Connection between them is made with bolt connection. When connect the air handling unit to duct system, flexible connections should be used to prevent transmissions of noise and vibration. The supplying pipes for heating and cooling units should not prevent the unit maintenance. It is advisable to connect them through flexible pipe-connections. The indicated directions of inlet and outlet of water sections and counter-flow between water and air must be observed. To prevention of freezing of water coil unit is recommended at the inlet section (fresh air) to mount multiple leaf damper equipped with spring return actuator. Must be ensured siphon, placed before condensation line is connected to the building installation. To make a repair or maintenance of the unit, enough space in front of it must be ensured. The size of doors and entry of the technical room should be considered with the overall dimensions of the installed sections when mounted, repaired or maintained. Model B B 1 B 2 B 3 Minimum free area to access to the technical room B 4 H 2 H 3 AHU AHU AHU AHU AHU AHU AHU 30H AHU 36H AHU 45H B 1 maintenance and cleaning of air filters B 2 repair and replacement of fan B 3 repair and replacement of heat exchangers: COT; COX; REC or ROT B 4 minimum width of the door of technical room H 2 height when fan, water section COT/COX or recuperator REC is repaired H 3 minimum height when rotary heat exchanger ROT is repaired 28

30 AIR HANDLING UNITS AHU H / AHU-DD Order designation AHU-DD 16 - Air handling unit, type BU 16 / 32 R / (15500/700) Fan section with BDB 500C,air flow m³/h and external pressure 700Pa, position 270, direction R from left to right; N el. = 7.5kW/380V; ending section according scheme 32; 2. BU 16B / 62 L / (15500/550) Fan section with BPF 560, air flow m³/h and external pressure 550Pa, direction L from right to left; N el. = 7.5kW/380V; ending section according scheme 62 with outlet flange 1200/ TU 16 / 2R / 4R / K R Thermal section with 2-rows heating and 4-rows cooling heat exchanger, drop eliminator and drain tray. Direction from the supply side R from left to tight 4. InU 16 / 1 / F / 1050х L Inlet section with air filter and damper, height 1050mm and length 1000mm; direction L from right to left; multiple leaf damper with manual control PJR 1200/700+M; bag filters AFC-B (F7) (specify when ordering) 5. InU 16 / 1 / F+F / 1050x R Inlet section with two-stage cleaning and damper; height 1050mm and length 1115mmm, direction R from left to right, damper PJR 1200/700+A with spring return actuator; air filter AFC-V (G4), bag filter AFC-B (F7). Type of filters and actuator are specified when ordering 6. RU-REC 16 - R / L1 Recuperative section with plate heat exchanger type REC-Al, drain tray and bypass damper PJR-BP, direction of fresh air R from left to right and direction of exhausted air L 1 - from right to left Note : Fans total pressure, speed, absorbed power and belt drive are selected automatically. Actuator type is specified when ordering. Air filters types are specified when ordering. When ordering should be additionally specified control elements and automation, as well as other options and possibilities (see p ) The scheme is viewed from the inspection side Implementation of the order is proceed after co-ordination of scheme and technical parameters of the unit. 29

31 AHU H / AHU-DD AIR HANDLING UNITS Functional schemes for management, control equipment and automation AHU- H Air handling unit with self-dependent exhaust fan Exhaust air Premises Fresh air Air handling unit with mixing section and pre-heating exchanger water-air Exhaust air Premises Fresh air Units BS - supply fan BЕ - exhaust fan Control equipment and automation elements: DA1 - fresh air damper actuator DA2 - exhausted air damper actuator DA3 - air damper actuator - mixing section DPS1 - differential pressure switch - rough filter for fresh air DPS2 - differential pressure switch - fine filter for fresh air DPS3 - differential pressure switch - filter for exhaust air DPSB1 - differential pressure switch - torn belt of the supply fan DPSB2 - differential pressure switch - torn belt of the exhaust fan FP/FP1 - frost protection of water heating sections COT or COT1 TP1 - temperature probe managing VAH1 TP - temperature probe managing VAH or VAC HP - humidity probe COT1 pre-heating water exchanger COT water heating section COX water cooling section VAH1-3-way valve actuator for pre-heating exchanger VAH - 3-way valve actuator - heating VAC - 3-way valve actuator - cooling FIS - frequency inverter control of the supply fan FIE - frequency inverter control of the exhaust air PZ - positioner - unified control signal CP11 circulation pump - heating (pre-heating exchanger COT1) CP1 circulation pump - heating CP2 circulation pump - cooling 30

32 AIR HANDLING UNITS AHU H / AHU-DD Functional schemes for management, control equipment and automation AHU-DD Air handling unit with plate heat exchanger air-air Fresh air Premises Exhaust air Air handling unit with rotary regenerative heat exchanger air-air Exhaust air Premises Fresh air Units BS - supply fan BЕ - exhaust fan Control equipment and automation elements: DA1 - fresh air damper actuator DA2 - exhausted air damper actuator DA3 - by-pass damper actuator DPS1 - differential pressure switch - rough filter for fresh air DPS2 - differential pressure switch - fine filter for fresh air DPS3 - differential pressure switch - air filter for exhausted air DPSB1 - differential pressure switch - torn belt of the supply fan DPSB2 - differential pressure switch - torn belt of the exhaust fan DPSBP - pressure switch managing DA3 (defrosting REC- AL - winter mode FP - frost protection of water section COT REC - plate heat exchanger ROT - rotary regenerative heat exchanger COT water heating section COX water cooling section TP - temperature probe managing VAH/VAC TP1 - temperature probe managing DA3 (by-pass damper REC-AL - free cooling ) VAH - 3-way valve actuator - heating VAC - 3-way valve actuator - cooling FIS - frequency inverter control of the supply fan FIE - frequency inverter control of the exhaust fan FIR - frequency inverter control of rotary regenerative heat exchanger CP1 circulation pump - heating CP2 circulation pump - cooling 31

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34 Ruse Vratsa Gorna Oriahovitsa Shumen Varna Sofia Gabrovo Kazanlak Sliven Burgas Pernik Stara Zagora Blagoevgrad Plovdiv Haskovo Petrich Smolian Office of Tangra Distributor of Tangra Head office 174, Europa Blvd Sofia, Bulgaria Tel.: ( ) ; Tel.: ( ) ; Fax: ( ) Office Varna West Industrial Range behind printing house Varna - East Tel.: ( ) varna@tangra.bg Office Burgas 6, Transportna Str. Tel.: ( ) bourgas@tangra.bg