FA6 Evaporative Humidifier, technical manual
Contents
1. 120 140 90 100 160 180 200 95 120 140 85 15 20 30 40 50 60 70 pe 0 ri S 2 270 270 300 240 240 270 270 240 300 210 240 240 270 210 300 180 240 210 210 240 270 180 180 240 210 210 240 180 300 150 240 150 300 120 180 180 150 210 2 0 25 3 0 3 5 4 0 45 vms gt Dimensions weights and pump sizes FAG6 65 FA6 85 FA6 95 C 630 mm D 100 mm C 630 mm D 200 mm C 730 mm D 300 mm Dimensions Qty Pump size Weight Pump size Weight Pump size Weight mm cassettes kg kg A B Width Width Wet Dry Wet Dry Wet Dry Size 300mm 600mm 060 060 8 8 50 26 8 58 28 060 090 600 8 8 57 30 8 70 33 060 120 8 8 64 33 9 80 38 090 060 600 8 60 29 8 69 33 8 84 39 090 090 900 900 1 1 8 66 32 8 78 38 8 100 46 090 120 1200 8 73 35 8 91 43 9 116 53 120 060 600 8 76 35 8 88 41 9 106 48 120 090 1200 900 2 8 84 39 8 100 46 9 129 56 120 120 1200 8 92 42 8 115 52 9 148 64 150 090 900 8 103 48 8 124 56 9 159 67 150 120 1200 8 113 51 8 142 62 9 184 79 150 150 1500 1500 1 2 8 123 55 9 159 71 9 208 90 150 180 1800 8 134 60 9 178 79 9 237 102 150 210 2100 8 141 64 9 197 88 9 262 113 150 240 2400 8 150 68 9 212 95 10 286 123 180 090 900 8 118 50 8 142 61 9 185 76 180 120 1200 8 134 59 8 169 74 9 218 91 180 150 1800 1500 3 8 146 64 9 187 82 9 247 102. e Required air conditions FA6 Dosing system The FAGds Dosing System is further enhancement of the FA6cc that enables time controlled and or externally con trolled dosing of biocides into the humidifier tray The system is supplied with all the necessary parts required for connecting to the FAG Evaporative Humidifier Cooler excluding the bio cide with container FA6 UV sterilization system A recirculating water UV sterilization system kills harmful bacteria and viruses in water using UV light FA6cs Conductivity System Enables conductivity controlled bleed off The system reduces water consumption and is especially effective with stage con trolled humidifier coolers FA6 Dimensioning program A Windows based program is available to help quickly select the right sized FAG The program provides correct humidity data and other relevant information required for the installa tion in question The program can serve as a valuable supple ment to this catalogue Please contact your nearest sales office for additional information l Murders FAA standard humidifier selection file ina tans teshrice perife liygene file ZE E Fe n Cuatomer Sign A O E Thsign suming C Amnaaal cad i ates quality tect 12 Desin evapesation lure Tesiyngesheaien 18 Unit data Pliante ad a A muza ntr ilala aim i ala ALU cross sectia va er zus en Solecoed unl zizo afi
3. 0 5 2 4 5 4 0 3 6 3 3 3 0 2 8 2 5 2 2 2 0 1 8 16 Bea Res RR all 1 0 175 6 0 6 0 5 9 4 9 4 2 3 8 3 4 3 1 2 9 2 7 2 3 2 1 19 17 Be Bes eee ee WA Os 200 6 0 6 0 5 6 4 7 4 0 3 6 3 2 3 0 2 7 2 6 2 2 2 0 1 8 1 6 14 ile lil 1 0 E 0 9 250 6 0 6 0 5 2 4 3 3 7 3 3 3 0 2 7 2 5 Total hardness as mg l Ca 2 2 3 2 0 Pire 1 6 iy 1 3 1 1 1 0 ROR ROS es 300 6 0 6 0 4 8 4 0 3 5 3 1 2 8 2 5 2 3 2 2 1 9 1 7 1 5 PA 12 11 NERO ROI oe es 350 6 0 5 9 46 3 8 3 3 2 9 26 2 4 2 2 2 1 1 8 16 14 1 3 1 1 1 0 ROBII ROIs IRON ROSA 400 6 0 5 7 4 3 3 6 3 1 2 7 2 5 2 3 2 1 2 0 1 7 1 5 IRINEI BIRD 11 Oo LOS os oz ow 450 6 0 5 4 4 1 3 4 3 0 26 2 4 2 2 2 0 1 9 1 6 EER ee 1 0 RRO Oe LO Oz Ola 500 6 0 5 2 4 0 3 3 2 8 2 5 2 3 2 1 U8 1 8 1 6 e IZA ea 1 O8 O8 O7 G7 OG Cycles lt 2 Conductivity controlled bleed off not recommended The table shows the maximum recommended cycles of concen tration for different water qualities Cycles of concentration mineral concentration in humidifier water mineral concentra tion in supply water The cycle value is used to calculate the bleed off If the cycle rate is 2 or lower it is recommended that a
4. 19 of RY i SH 18 CAA 090 120 Wy 17 La J 120 090 16 Pa o 15 4 AY iN 060 120 N 4 X 090 090 A E AS aa 2X5 ALA 8 7 J 120 060 P 5 NI 4 060 090 5 KN Se o DI a I x 3 KA 2 X0 X1 090 060 i SKS S CKS i o 15 10 5 0 5 D g5 20 25 W 5 40 to tw 2 t Definition of humidification efficiency n n x x x x x 100 A 060 060 ANN N LAR NAS RINNAN r 20 25 3 0 35 40 45 Example The diagram shows if the selected humidifier is the FA6 85 090 120 equipped with a droplet separator Airflow q 2 8 m s Air velocity v 3 6 m s Pressure drop humidifier Ap85 92 Pa Pressure drop droplet separator Ap 22 Pa Humidification efficiency y 82 13 Charts for selection of Humidifier sizes Humidifier airflow range 4 10 m s Ap Pa 14 20 25 30 40 50 60 70 80 100 120 140 160 180 200 l 95 30 40 50 60 70 80 90 100 120 85 gt 65 VER WW an T PLA aj A 180 090 tt Humidifier airflow range 10 30 m s Ap Pa 25 20 Droplet separator recommended for air velocities above 3 5 m s 30 50 40 60 70 50 80 60 100 70 20 25 30 OP 80
5. Control system for max 6 steps can be supplied Number of steps depending on Humidifier size Control system for face and Bypass Control system for max 6 steps and two outputs for damper actuator can be supplied Number of steps depending on Humidifier size 11 BMS integration and improved hygiene In most cases water treatments are not necessary but in cases with poor water quality it can be necessary to add a water treatment FA6cc Clean Concept A bolt on enhancement for the FAG humidifier that enables circulating water models to operate at optimum hygiene levels The system incorporates a control panel with BMS connec tions electronic level control and automatic drainage of the reservoir The system has options for boicide dosing and con ductivity controlled bleed off FAGcc is designed to exceed cur rent legislation in relation to the control of bacteria in water systems in many countries e g ACOP L8 in the U K For more information please refer to the FAGcc technical manual Dimensioning How to select your FA6 Selection of the right FAG unit is easy with the advanced FAG Dimensioning Program The program is based on weather data collected over many years for almost all locations globally All you need to know are the following parameters e Air volume Duct dimensions or the cross section of the AHU e Design conditions location e Required control accuracy e Type of application Humidification Cooling
6. chart below Control properties A dew point system provides an almost constant Rh level in the room during the day regardless of the actual humidity of the ambient air The result in practice is a control accuracy of 1 2 percentage points RH Options The customer order models and accessories below have been described only briefly Please contact your local Munters office for additional infor mation Height The FAG is available in special heights in case it is necessary to utilize the maximum height of the air conditioning unit High temperature Direct water models can be adapted for high temperature applications 100 C Normally used in recirculation paint booths where high temperatures occur during the drying cycle Special cassette sets Each standard size FAG has a specific number of 300 mm or 600 mm wide cassettes For applications requiring close con trol two 300 mm cassettes may be used to replace a single 600 mm cassette Additional solenoid valve must then be installed for each cassette Pump motor and special electrical data The standard pump has a motor designed for 3 phase 400V 50 Hz operation or 3 phase 230V 50 Hz Motors for 3 phase operation using other voltages and or frequencies are available as are motors for 1 phase 230V 50 Hz and 120 V60 Hz operation Constant flow valves Specially designed constant flow valves for systems using di rect water are available If a humidifier is to be us
7. company for analysis data Based on tests performed and operating evaluations of various systems Munters has established the following recom mendations see page 18 17 Water consumption Direct water The total water consumption is a sum of the total number of running hours The table in page 17 specifies the maximum water consumption l min when water supply is on Circulating water model The total water consumption is the sum of the evaporated water E and the bleed offamount B The bleed off is the constant discharge flow that is necessary to maintain the mineral concentration in the circulating water at such a level that the service life of the FA6 humidification cooling pad is optimised Bleed off factor The bleed off factor B is obtained from the quality diagram below if the water quality is known A water analysis may be carried out but it is often simpler to ask the local water com pany for analysis data If the bleed off factor is above 2 it is recommended that a CaCO mg l 25 25 250 2 500 25 000 Ca2 mg l ae 1 0 10 100 1 000 10 000 Quality diagram for water Water quality Water from other sources If the supply water is not classified as drinking water from the mains the following additional concentration limits are recommended Cl x C lt 200 mg l SO x C lt 300 mg l Chlorides mg l CI Sulphates mg l SO re B
8. 1 41 0 54 1 95 l min Water from other sources If the supply water is not classified as drinking water from the mains the following additional concentration limits are recom mended Chlorides mg l CI Sulphates mg l SO i Bacteria rate CFU ml KBE ml Cl x C lt 200 mg l SO x C lt 300 mg l CFU ml x C lt 1000 Multiply the concentration by the cycle ratio C and compare to the recommended limit If the value is over the limit reduce the cycle rate When using softened water the total hardness can t be used for dimensioning the bleed off Instead use a conductivity limit of 1 000 uS cm to calculate the cycle ratio Supply conductivity x C lt 1 000 uS cm In poor water quality areas a blend of treated water and raw water can be used to lower the mineral content The water should be blended so that the conductivity gt 100 uS cm If the blended water is too clean it may leech the minerals out of the GLASdek cassettes and thereby seriously damage them Total water consumption T for direct supply water model FA6 65 FA6 85 FA6 95 Models l min l min l min 060 060 1 8 3 5 3 5 060 090 1 8 a5 3 5 060 120 1 8 3 5 3 5 090 060 2 8 6 3 6 3 090 090 2 8 6 3 6 3 090 120 2 8 6 3 6 3 120 060 3 5 8 0 8 0 120 090 3 5 8 0 8 0 120 120 35 8 0 8 0 150 090 4 5 10 0 10 0 150 120 4 5 10 0 10 0 150 150 4 5 10 0 10 0 150 180 6 3 10 0 12 0 150 210 8 0 12 0 15 0 150 240 8 0
9. 15 0 18 0 180 090 6 3 12 0 12 0 180 120 6 3 12 0 12 0 180 150 6 3 12 0 12 0 180 180 8 0 12 0 15 0 180 210 8 0 15 0 18 0 180 240 10 0 15 0 210 120 6 3 15 0 15 0 210 150 6 3 15 0 15 0 210 180 8 0 15 0 18 0 210 210 10 0 15 0 210 240 12 0 18 0 240 120 8 0 15 0 15 0 240 150 8 0 15 0 15 0 240 180 10 0 15 0 240 210 12 0 18 0 240 240 12 0 240 270 15 0 270 120 10 0 18 0 18 0 270 150 10 0 18 0 18 0 270 180 10 0 18 0 270 210 12 0 270 240 15 0 270 270 15 0 300 120 10 0 18 0 18 0 300 150 10 0 18 0 300 180 12 0 18 0 300 210 15 0 300 240 18 0 300 270 18 0 300 300 Special design with increased draining capacity is required Pressure requirements at water supply connection point Pressure requirements Circulating Direct water water Required min pressure at 500 kPa 150 kPa connection point 5 0 bar 1 5 bar Permitted max pressure at 1 000 kPa 1 000 kPa connection point 10 0 bar 10 0 bar Circulating water model The total water consumption is the sum of evaporated water and the bleed off The bleed off is a constant discharge flow that is necessary to maintain the mineral concentration in the tray at such a level that the service life of the humidifier cas settes may be optimised The recommended amount of bleed off depends on the quality of the supply water If the water quality is not known a water analysis may be carried out but it is often simpler to ask the local water
10. 4 180 180 1800 8 158 70 9 210 92 10 281 118 180 210 2100 8 165 74 9 233 102 10 309 130 180 240 2400 8 177 79 9 250 109 10 338 142 210 120 1200 8 156 68 9 197 86 10 254 107 210 150 1500 8 169 74 9 219 96 10 288 121 210 180 2100 1800 1 3 8 184 81 9 245 108 10 328 138 210 210 2100 8 193 85 9 271 118 10 362 153 210 240 2400 8 206 91 9 292 128 11 395 167 240 120 1200 8 175 75 9 221 95 10 286 118 240 150 1500 8 191 82 9 246 106 10 325 134 240 180 2400 1800 4 8 206 89 9 276 119 11 370 153 240 210 2100 8 216 94 9 306 131 11 407 169 240 240 2400 8 232 101 9 329 141 11 446 185 240 270 2700 9 247 107 9 359 153 11 483 195 270 120 1200 8 197 84 9 250 107 10 323 133 270 150 1500 8 241 91 9 278 119 10 366 152 270 180 2700 1800 1 4 8 232 100 9 310 134 11 417 173 270 210 2100 8 244 106 9 345 148 11 461 192 270 240 2400 9 261 113 10 372 160 11 503 210 270 270 2700 9 277 120 10 405 174 11 554 231 300 120 1200 8 216 91 9 274 116 11 355 145 300 150 1500 8 235 99 9 304 129 11 403 164 300 180 1800 5 8 254 108 10 341 145 11 459 186 300 210 3000 2100 8 267 114 10 380 161 11 505 207 300 240 2400 9 286 122 10 408 173 11 554 227 300 270 2700 9 305 130 10 445 188 11 610 250 300 300 3000 9 336 141 10 462 222 11 638 309 Humidifier with height over 210 cm are delivered disassembled Upon request other sizes can be delivered disassembled 15 Water Quality Data Following page is based on F
11. A6 with Clean concept control Total alkalinity as mg l HCOs 10 20 30 40 50 60 70 80 90 100 125 150 175 200 250 300 350 400 450 500 10 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 5 5 5 0 44 3 9 3 5 3 2 3 0 2 8 20 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 5 3 4 7 4 2 3 9 3 3 3 0 2 7 2 5 2 3 2 1 30 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 5 6 5 2 45 40 3 6 3 3 2 9 2 5 2 3 2 1 19 1 8 40 6 0 6 0 6 0 6 0 6 0 6 0 5 9 5 4 5 0 47 41 3 6 3 3 3 0 2 6 2 3 2 1 1 9 1 7 1 6 50 6 0 6 0 6 0 6 0 6 0 6 0 5 5 5 0 4 6 4 3 3 7 3 3 3 0 2 7 2 4 2 1 1 9 1 7 1 6 LS 60 6 0 60 6 0 6 0 6 0 5 6 5 1 47 43 4 0 3 5 3 1 2 8 2 6 2 2 20 18 L6 RS 1 4 70 6 0 6 0 6 0 6 0 6 0 53 48 44 41 3 8 3 3 2 9 2 6 2 4 2 1 1 8 1 7 1 5 e 33 80 6 0 6 0 6 0 6 0 5 7 5 1 46 4 2 3 9 3 6 3 1 2 8 2 5 2 3 20 1 8 16 RRRS 155 90 6 0 6 0 6 0 6 0 5 5 4 8 44 4 0 3 7 3 5 3 0 2 6 2 4 2 2 1 9 1 7 1 5 S 12 100 6 0 6 0 6 0 6 0 5 2 46 4 2 3 8 3 6 3 3 2 9 2 5 2 3 2 1 1 8 1 6 EORR Ree 2 125 6 0 6 0 6 0 5 6 4 8 43 3 9 3 5 3 3 3 0 2 6 2 3 2 1 1 9 17 i iil 150 6 0 6 0 6
12. Evaporative Humidifier Cooler FA6 for AHU Technical manual SERATI i i t ia i I 4 i a gt A ti i g fi i f i 3 i i i f t i p t t i 5S izey Perie tut en Sote esti js Acad ES piper n firelor ddd HC MMA TGB 1711 06 10 pdf sos Rekamstudio Disclaimer Munters reserves the right to make alterations to specifications quantities dimensions etc for production or other reasons subsequent to publication The information contained herein has been prepared by qualified experts within Munters While we believe the information is accurate and complete we make no warranty or representation for any particular purposes The information is offered in good faith and with the understanding that any use of the units or accessories in breach of the directions and warnings in this document is at the sole discretion and risk of the user This manual has been prepared in English as original language Munters Europe AB 2010 Contents FA6 Evaporative humidifier Cooler Introduction Introduction Technology basics Standard sizes Simple to install Technical specification Design and operation Circulating water models Bleed off flow Control system On off control Step control Face and by pass control Dew point control Options BMS integration and improved hygiene FAG Clean Concept FAG Dosing System FAG UV sterlilization system FAGcs Conductivity System Dimensioning How to
13. I 2 3 3 4 Air volume m s at 4 5 m s 120 7 3D 4 7 150 3 9 5 8 7 6 9 5 11 3 13 2 180 4 8 7i 9 3 11 6 13 8 16 0 210 8 1 10 7 13 3 15 9 18 5 240 9 4 12 4 15 4 18 4 21 4 24 4 270 10 5 13 8 17 2 20 5 23 9 272 300 11 8 15 5 19 3 23 0 26 7 30 5 34 2 Customized sizes on request are available contact your Munters contact person Technical specifications Connection points and access space requirements for service Supply air Humidified air Electrical connection point for pump Cold water connection female threaded coupling 1 2 18 mm Discharge pipe with a rubber socket for piping with dimen sion d 50 mm 2 Access for inspection and servicing ag pono O 4 Sound attenuation Pump size Voltage Frequency Power Rated ref p 9 V 10 Hz W current A B KTFI6 Pm 50 49 0 26 0 15 9 KTF51 RaR 50 75 0 38 0 22 10 KTF81 ae 50 140 0 71 0 41 11 KTF82 Paes o 50 60 220 0 95 0 55 Integral attenuation dB Octave band Hz 63 125 250 500 1 000 2 000 4 000 8 000 FA6 65 3 2 2 2 4 5 8 10 FAG 85 3 2 3 5 6 12 15 FA6 95 3 2 3 3 5 7 13 16 Sound level for FAG unit is not above 70 dB Maximum continuous operating temperature Electrical solenoid valve for step control Air Water vep Power GLASdek 200 C 40 C Frequency Hz V 10 Ww Mesh reinforce
14. Munters Phone 966 1 241 8808 Korea Munters Korea Co Ltd Phone 82 2 761 8701 Mexico Munters Mexico Phone 52 818 262 54 00 Russia Munters Europe AB Phone 7 812 448 5740 Singapore Munters Pte Ltd Phone 65 744 6828 South Africa and Sub Sahara Countries Munters Pty Ltd Phone 27 11 997 2000 Spain Munters Spain S A Phone 34 91 640 09 02 Sweden Munters Europe AB Phone 46 8 626 63 00 Thailand Munters Co Ltd Phone 66 2 645 2708 12 Turkey Munters Form End stri Sistemleri A Phone 90 322 231 13 38 United Kingdom Munters Ltd Phone 44 845 644 3980 USA Munters Corporation Fort Myers Phone 1 239 936 1555 Munters Corporation Mason Phone 1 888 335 0100 Vietnam Munters Vietnam Phone 84 8 825 6838 Export amp Other countries Munters Europe AB Phone 46 8 626 63 00 Munters AB 2010 GLASdek and FA6 are trademarks of Munters
15. acteria rate CFU ml KBE ml CFU ml x C lt 1000 Multiply the concentration by the cycle ratio C and compare to the recommended limit If the value is over the limit reduce the cycle rate When using softened water the total hardness can t be used for dimensioning the bleed off Instead use a conductivity limit of 1000 pS cm to calculate the cycle ratio Supply conductivity x C lt 1000 pS cm 18 direct water system is used instead of circulating water or the water supply should be treated to improve the water quality Example Airflow q 2 8 m s Average moisture content of supply air x 2 0 g kg Average moisture content of humidified air x 9 0 g kg Total hardness 100 mg l Ca Total alkalinity 100 mg l HCO Bleed off factor from table f 0 3 Calculate the average evaporation E qx 60x 1 2x x x 1 000 2 8 x 60 x 1 2 x 9 2 1 000 1 41 l min Calculate the bleed off B f x E 0 3 x 1 41 0 42 l min The total water consumption can be calculated T E B 1 41 0 42 1 83 l min CO mgl 0 1 0 01 General water hardness conversion table CaCO Water condition Hardness dH CaCO mg l Very soft 0 2 0 36 Soft 2 5 36 90 Normal 5 10 90 179 Hard 10 21 179 376 Very hard gt 21 gt 376 In poor water quality areas a blend of treated water and raw water can be used to lower the mineral content The water should be blended s
16. ation is kept at an acceptable level Before the humidifier can be started up the bleed off flow rate must be calculated and set in accor dance with the instructions on page 18 and in page 13 in FAG installation service manual Control systems There are four different Control systems available to control the humidity The FAG can be easily controlled to address even the most demanding conditions The choice of control method depends mainly on the applica tion and the desired accuracy of the system On Off 1 stage Stage Control 2 5 stages On off control Operation The humidity sensor GRh measures the relative humidity in the room or exhaust duct and switches all the cassettes either on or off to achieve a humidity level within the set lower and upper limit values The temperature sensor GT measures the temperature downstream of the supply air fan and controls the preheater to achieve the set value When humidity is required the humidifier pump starts and all the cassettes are supplied with water The RH level in the room rises relatively quickly to the set upper limit since all the cassettes are in operation The pump then stops and all the cas settes are taken out of operation The RH level in the room then falls reaching after some time the lower set value The pump will then start again stopping when the upper limit val ue has been reached The operating conditions of the system for varying ambien
17. d below e The frame cassette profiles pump bracket pump filter water distribution headers and bottom trough are manufac tured from stainless steel EN 1 4301 e The humidifier cassettes and droplet separator are of nonflammable glass fiber GLASdek e The water distribution has PVC tubing e The water distribution hoses are of mesh reinforced soft plastic with PVC couplings e The circulation pump impeller and pump housing are of plastic PPS e The constant flow valve is of brass e Discharge pipe is of polyethylene tubing 19 9 Munters Munters Europe AB HumiCool Division Isafjordsgatan 1 P O Box 1150 SE 164 26 Kista Sweden Phone 46 8 626 63 00 Fax 46 8 754 56 66 www munters com Australia Munters Pty Limited Phone 61 2 6025 6422 Brazil Munters Brasil Industria e Comercio Ltda Phone 55 41 3317 5050 Canada Munters Incorporated Phone 1 905 858 5894 China Munters Air Treatment Equipment Beijing Co Ltd Phone 86 10 80 481 121 Denmark Munters Turbovent Phone 45 9862 3311 Finland Munters Oy Phone 358 9 83 86 030 France Munters France S A Phone 33 1 34 11 57 50 Germany Munters Euroform GmbH Phone 49 241 89 00 0 India Munters India Phone 91 20 3052 2520 Indonesia Munters Phone 62 818 739 235 Italy Munters Italy S p A Chiusavecchia Phone 39 0183 52 11 Munters Italy S p A Mondovi Phone 39 0174 560 600 Japan Munters K K Phone 81 3 5970 0021 Kingdom of Saudi Arabia and Middle East Hawa
18. d plastic hose 50 C 50 C 1 phase 230 V AC 50 60 43 24 PVC pipes 50 C 50 C 24 V AC 50 60 15 Circulation pump ON 40 C 80 C Circulation pump OFF 79 C 80 C Drain capacity Bottom valve only 30 l min IP classes Overflow protection only 30 l min Pump 54 Bottom valve overflow protection 60 l min Saleacid salve 65 Stated drain capacity is valid when using 50mm drain pipes Drain valve 54 Design and operation Two different types of systems are available Circulating water or Direct water Circulating water FA6 units A circulating water system is recommended to most applica tions sizes to ensure low water consumption and low life cycle cost Circulating water models The tray is filled with cold water from the mains and the water level is maintained by the level switch and solenoid valve When there is a demand for humidification the pump starts and delivers water to the water distribution assembly where it is supplied to the water distribution header Each water distri bution header assembly supplies sufficient water to the humidi fier cassette The water then flows down through the corrugat ed surface of the humidifier cassette Some of the water is absorbed by the GLASdek media and the rest runs down into the bottom tray As the supply air passes through the me dia a proportion of the water absorbed by the media evapo rates on contact with the air to produce humidified air Direct wa
19. direct water system be used instead of circulating water or the supply water should be treated to improve the water quality The conversion table below can be used to convert local measuring units to fit the table Cycles lt 1 5 Direct water recommended Total hardness calcium hardness dH dH x 7 2 gt mg l Ca of f x 4 0 gt mg l Cat clark clark x 5 7 mg l Ca ppm CaCO ppm CaCO x 0 25 mg l Ca Total alkalinity carbonate hardness bicarbonate dH dH x 21 8 mg l HCO ppm CaCO ppm CaCO x 1 2 mg l HCO ppm NaOH ppm NaOH x 1 5 mg l HCO General Concentration mg l g m ppm Conductivity 1mS m 10 pS cm 10 uMHO The total water consumption T is the sum of the evaporated water quantity E and the bleed off quantity B When esti mating the evaporated water quantity use the average running conditions for the installation Example Airflow q 2 8 m s Average moisture content of supply air x 2 0 g kg Average moisture content of humidified air x 9 0 g kg 16 Cycles lt 1 Non usable water Total hardness Total alkalinity 80 mg l Ca 100 mg l HCO Cycles of concentration from table C 3 6 Calculate the average evaporation E qx 60x 1 2 x x x 1 000 2 8 x 60 x 1 2 x 9 2 1 000 1 41 l min Calculate the bleed off B E C 1 1 41 3 6 1 0 54 l min The total water consumption can be calculated T E B
20. dth rr 2400 te Zrculatig water sidiamm Frech socks mie Length mm Feigtmn zanu Direct water pinn finn sae on eficences gt pr Damper sytem Cre A Core Eyo oy ag flo _ p Cortiol stap lt Ei thon Pes 8 ho cf stop a m rarita a r Irepervior a de c Or y il velocity ERP fat Fiti exceecs mss gt Hasull al design condition paie stia CEACE FEPER Nnmteal made ep comtral Tigh a aaa Pretrat Su pal an Saad anit TA NS Ma ARa ra n t Unit weight wetldry kg Li pa face velocity mir Tub C 12 1 46a 22 0 Bessa te INI Suu I Ww I 55 5i x Selection of humidifier size Calculating humidified air properties Example Humidifier airflow range 0 5 4 m s Humidification efficiency n 82 Supply air winter t0 5 C and x0 2 0 g kg t Ot mm C X PX xX g kg The outside supply air is pre heated to tl 35 C and x1 2 0 g kg giving a wet bulb temperature of tw 14 6 C and a saturated air content of xw 10 4 g kg see psychrometric chart below The condition of the humidified air downstream of the humidifier can be calculated as l x2 xl n 100x xw x1 2 0 82 100x 10 4 2 0 8 9 g kg PP A o a 5 t2 tl n 100x tw t1 35 82 100x 14 6 35 18 3 C e lt 30 40 50 60 70 80 90 100 120 140 85 15 20 30 40 i 60 70 65 pam SIIS JNS 150 090 s B S amp IS
21. ed for indi Note however that it is not possible to achieve the set humidity for the room without pre cooling for conditions when the ambient air is above an imaginary line between the room dew point and the condition before the humidifier at design ambi ent air humidity Operating time Operation of the unit utilizes all of the humidifier cassettes as soon as a need for humidity exists Note A constant interval heat load is assumed for a constant room temperature If this is not the case a room temperature sensor should be added rect evaporative cooling utilizing direct water the constant flow valves can be designed for half the nominal flow Droplet separators Used to eliminate the risk of carry over due to high air veloci ties or turbulent airflow They are very easy to install and do not change the FA6 humidifier s space requirement Droplet separators are recommended for all installations with a face ve locity over 3 5 m s Total Emptying of water distribution according to VDI 6022 German requirements Direct water units can be ordered with a special designed dis tribution pipe The distribution pipe is equipped with motor ized drain valve for automatic drainage For total emptying of distribution pipes after shutdown External pump station For extra high service availability Munters can supply an exter nal pump station Contact your Munters Contact person for details Control system for step control
22. gh the media is up to 3 5 m s without the droplet separa tor DropSTOP and up to 4 5 m s with Dropstop Air flow range 0 5 34 m s Nominal humidification efficiency 65 85 and 95 Humidifier cassettes of non combustible GLASdek Designed with circulation or direct water systems With or without droplet separator DropSTOP Adapted for dew point stepped face and by pass control or On Off control Complete emptying of bottom tray Simple maintenance Comprehensive accessories available Technology basics The heart of FAG is a cassette made from inorganic non com bustible evaporative media GLASdek Water is supplied to the top of the GLASdek evaporative media via a distribution header The water flows down the corrugated surface of the media As the warm and dry air passes through the media it evaporates a proportion of the water and thus produces cold humidified air The rest of the water assists in washing the me dia and is drained back to the tray The energy that is needed for the evaporation is taken from the air itself The air that leaves the humidifier is therefore humidified and cooled simul taneously without any external energy supply for the evapora tion This is in essence the adiabatic cooling process It is very efficient and the consumption of energy is very low It also al lows the use of water straight from the tap with no need for water treatment i e demineralisation plants Minerals and po
23. llutants stay behind in the GLASdek evaporative media to be washed away with the discharge water keeping the total hu midification process pure Standard sizes Wide range of sizes FAG comes in a wide range of standard sizes that conform to all typical air handling unit dimensions The individual units cover air volumes from 0 5 34 m s For very large air volumes a combination of units is selected in order to achieve the desired size Non standard sizes are available upon request Selecting the optimal size is easy with the FA6 Dimensioning Program or your Munters contact per son can help you The principle of evaporative humidifictaion and cooling the adiabatic cooling process Simple to install The FAG is easy to install and easy to configure into both exist ing and new HVAC systems For installation you need to have access to electricity 400V 50 Hz and 230V 50 Hz as stan dard for pump and solenoid valves Pump for 230V 50 Hz or 120V 60 Hz and solenoid valves for 24V AC are available as option Water supply 1 10 bar and drainage 50 mm 2 Con nect to existing BMS control system or Munters can supply a new control system for the control of humidifier cooler Due to its high performance and compact design it is the ideal replacement for older less efficient humidifiers coolers A width B height cm cm 60 90 120 150 180 210 240 270 300 60 0 9 1 6 2 4 90
24. me for the cassettes is on average only half of what it is for the cassettes in a dew point system Control properties A Face and by pass system provides an almost constant RH level in the room during the day regardless of the actual hu midity of the ambient air The result in practice is a control accuracy of 1 2 percentage points RH Note however that it is not possible to achieve the set humidity for the room without pre cooling for conditions whereby the ambient air has a higher wet bulb temperature than the room s wetbulb temperature Operating time This method of operation will minimize starts and stops and increase the service life of the cassettes Furthermore the oper ating time for the cassettes is on average only half of what it is for the cassettes in a dew point system The system is highly cost effective compared with dew point regulation since there is no after heater nor shunt unit Dew point control Operation The dew point sensor GX measures the absolute humidity of the air from the humidifier and controls the pre heater to achieve the set value The temperature sensor GT measures the temperature of the supply air downstream of the inlet fan and controls the post heater to achieve the set value When humidity is required the humidifier pump starts and water is supplied to all the cassettes The operating characteristics of the system for varying am bient air humidity can be found in the ps
25. o that the conductivity gt 100 pS cm If the blended water is too clean it may leech the minerals out of the GLASdek cassettes and thereby seriously damage them Ordering key FAG6 EE WWW HHH XX X X a Code for humidification efficiency 65 65 85 85 95 95 Code for width cm See page 20 Code for height cm See page 20 Code for water system C Circulating water D Direct water CS Face and bypass 1 5 no of steps Code for droplet separator 0 Without 1 With Code for service and pipe connection side L Left R Right e g FA6 85 120 090 C1 0 L Design standards approvals FAG humidifier Cooler is manufactured in accordance with the following Harmonized European standards and technical specifications e EN 60204 1 edition 3 Safety of machinery electrical equipment of machines e EN 61000 6 3 edition 1 Electromagnetic compability EMC Emissions standard for Residential commercial and light industrial environments e EN61000 6 3 A11 Electromagnetic compability EMC Emissions standard for Residential commercial and light industrial environments e EN61000 6 1 Electromagnetic compability EMC Emissions standard for Residential commercial and light industrial environments It agrees with the limitations that have been stipulated for machines with the most important health and safety requirements of Machinery Directive 2006 42 EG and furthermore 2004 108 EC with guideline fo
26. old Water D Discharge Water 6 Reservoir Drain Valve 7 Bleed off Drain 8 Water Distribution 1 Humidifier Cassette Assembly 2 Water Distribution Header 9 Bleed off Control Valve Assembly 10 Pump 3 Water Distribution Hose 11 Discharge Pipe 4 Level switch 12 Overflow Outlet 5 Water inlet solenoid valve 13 Pressure reduction Bleed off flow Regular cold water from city mains contains a certain amount of minerals and salts the concentration of which varies from place to place During evaporation pure water is released to the air The minerals and salts remain in the water and are re turned to the water reservoir The concentration in the reser voir water therefore becomes higher than the supply water If the mineral concentration especially calcium becomes too high scale deposits may form on the surface of the media until they finally clog the humidifier To combat the problem a pro C Mains Cold Water D Discharge Water 4 Mains Water Connection 5 Constant Flow Valve 6 Water Distribution Assembly 7 Discharge Pipe 8 Overflow Outlet 1 Humidifier Cassette 2 Water Distribution Header Assembly 3 Water Distribution Hose portion of the reservoir water must be drained and replaced with fresh water The water that is drained off through the bleed off valve via the bleed off hose to the discharge pipe is called the bleed off flow The bleed off flow rate is regulated using the bleed off valve so that the mineral concentr
27. r Electromagnetic compability Humidifier cassette The glass fiber material GLASdek used for the humidifier cassette has been fire tested and classified as non combustible material according to the test standard ISO 1182 The glass fiber Comments Humidifiers with height over 210 cm are delivered disassembled Upon request other size can be delivered disassembled The standard delivery does not include water filter or water trap these parts can be ordered as accessories When the number of steps 1 no solenoid valve is included for step control In the case of more steps than one the number of solenoid valves depends on the number of cassettes in the humidifier Your contact person at Munters will be able to furnish you with full details TS Left Right Service and pipe connection side and certifications material GLASdek used for the droplet separator cassette has been fire tested and classified as nonflammable material class 1 according to BS 476 part 7 M1 according to the French CSTB and class T1 according to JISA 1322 Japan This corresponds to NordTestFire 004 class 1 and the German DIN 4102 part 1 class B1 in accordance with Svensk Standard Swedish Standard SS28418 Selection of materials The major standard components of the Munters FA6 humidi fier and their materials of construction are liste
28. select your FAG Size selection program Dimensioning example Charts for Humidifier sizing Dimensions weight and pump sizes Water quality data Table and example Water from other sources Total water consumption for direct supply water model table Pressure requirements at water supply connection point without CC unit Water consumption Direct water model Circulating water model Bleed off factor Example Water quality Water from other sources General water hardness conversion table Ordering key Design standards approvals and certifications O AN N AYN HR A 10 10 11 11 12 12 13 14 15 16 16 16 16 17 18 18 19 19 FA6 Evaporative humidifier cooler Warm and Dry air Cold and Humid air Circulating water system Introduction The Munters evaporative FA6 humidifier cooler has been spe cially designed for integration into air handling units within both residential and industrial buildings The design is com pact and sizes conform to all typical air handling units AHU The standard product line encompasses a wide range of sizes options for multistage control integrated droplet separator and three nominal humidity efficiencies of 65 85 95 There are also two different models for either direct water or circulating water The airflow range is between 0 5 and 34 m s The external dimensions of the smallest humidifier are 0 6 x 0 6 m the largest 3x3 m The recommended air velocity throu
29. t air humidity can be found in the ps chart Face and By pass On Off control system accuracy typical 5 10 relative humidity RH Stage Control controlling the individual cassettes accuracy typical 3 5 RH Face and By pass the infinitely variable for very exact accura cy 1 2 RH Dew point Control measures the absolute humidity of the air from the humidifier and controls the pre heater and re heater to achieve the set value accuracy 1 2 RH Dew point Control Control properties An on off control system provides an RH level in the room during the day that varies between the set maximum and mini mum values independent of the humidity of the ambient air The system starts and stops several times a day regardless of the actual humidity of the ambient air The result in practice is a control accuracy of 5 10 percentage points RH Operating time Since the humidifier is greatly over engineered for most of the year the start and stop frequency will be high The tighter the set tolerances start and stop difference the higher the start and stop frequency In times of highly humid ambient air the on interval for the humidifier is shorter than the off interval When the humidity of ambient air is low these conditions are reversed Step control Operation The humidity sensor GRh measures the relative humidity in the room or exhaust duct and opens the necessary solenoid valves to achieve a h
30. ter FAG units Direct water systems are commonly used when the water quali ty is too poor for circulating systems or when the humidifiers annual operation time is short Direct water system are not available in all sizes see chart on page 17 Direct water supply models The direct water model does not have a water pump therefore it is essential that the mains cold water supply connected to the unit has adequate pressure and flow rate for the humidifier being installed Mains cold water is supplied to the unit and is fed to the water distribution header via a constant flow valve The constant flow valve ensures that the correct flow rate is supplied to the water distribution header of each cassette The water flows downward through the corrugated surface of the humidifier cassette Some of the water is absorbed by the GLASdek media and the rest runs down into the bottom tray As the supply air passes through the humidifier a propor tion of the water absorbed by the media evaporates on contact with the air to produce humidified air The water that reaches the bottom tray is discharged directly to the wastewater system through the discharge pipe Design and operation Circulating 2 2 1 i 3 3 7 9 10 8 a 7 5 p PE E 43 42 D lt pq Direct 2 2 1 j 5 7 1 3 3 C A gt 5 Function diagram C Mains C
31. the cassette situated downstream of the face damper When the face damper is fully open and there is a continued demand for humidification one of the solenoid valves is opened and the face and by pass dampers return to their origi nal positions Should additional humidity continue to be required the face damper gradually opens and the by pass damper closes to a corresponding degree When the face damper has opened completely the next solenoid opens and the face and by pass dampers again return to their original positions This sequence is repeated until all the solenoid valves have opened The operating conditions of the system for varying ambi ent air humidity can be found in the ps chart 10 Control properties A system using step control provides RH level in the room during the day that varies between the set maximum and mini mum values depending on the actual humidity of the ambient air Four steps normally provide a control accuracy of 3 5 percentage points RH The tighter the tolerances for set maxi mum and minimum values the more steps are required Operating time A defined step relates to a certain humidity interval of the am bient air During the spring therefore only one cassette is in operation During the winter four cassettes are in operation Please see the diagram This method of operation will mini mize starts and stops And this will increase the service life of the cassettes Furthermore the operating ti
32. umidity level within the set lower and up per limit values The temperature sensor GT a mean value type measures the temperature downstream of the supply air fan and controls the preheater to maintain the set value When humidity is required the humidifier pump starts and the cassettes without solenoid valves are supplied with water The dimensions of these cassettes are chosen so that the RH level in the room rises to just under the upper set limit value If the humidity of the ambient air drops the RH level in the room falls The relative humidity sensor GRh opens the first solenoid valve when the level has reached the lower limit value The size of the cassette for this solenoid has been chosen so that the RH level now rises again to just under the upper set limit value This sequence is repeated until all the solenoid valves are open The operating conditions of the system for varying ambi ent air humidity can be found in the ps chart Face and by pass control Operation The humidity sensor GRh measures the relative humidity in the room or exhaust duct and opens the necessary number of solenoid valves as well as the face damper or gradually closes the by pass damper to maintain the set value The temperature sensor GT a mean value type measures the temperature downstream of the supply air fan and controls the preheater to maintain the set value When humidity is required the humidifier pump starts supplying
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