Double skin service manual
Contents
1. 17 Steam humidifier myer reanna e 17 Sound attenuator eek AA sett deltas hee eter ape de eT ee ae TEES 17 Multizone Section da Mali hat anand Denier 17 Maintenance Instructions ieee cc KAKERA u s dag wey Sect eave Send wave AENA SrA 17 Lroubleshooting AA ae Ae ks te A a 18 Maintenance aster ee 20 CONTINUING RESEARCH RESULTS IN STEADY IMPROVEMENTS THEREFORE THESE SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE SAFETY INSTRUCTION NOTE This maintenance instruction describes all functions and advantages of the units and assure a safety operation of theclient user Technical use and handling responsibility is of client user The maintenance staff personnel must be trained technicians in operating air handling units refer to start up procedure Maintenance repair works by trained personnel only Function operation and maintenance to be done periodically as stated Should above instructions not followed up warranty will be void OBSERVE USER S ADVICE User information of this maintenance instruction and those given on units or components must be observed and adhered to Specifically those on transport installation start up restart and upkeep Specification of unit may not be altered Unauthorized modification may impair function safety and oper2. Water leakage behind the air washer 9 No humidification at washer 10 No humidification with steam humidifiers PROBABLE CAUSE drip eliminator does not work correctly nozzles dirty it spray water jet into the drip eliminator face velocity too low air washer humidifiers at lower fan speed this means face velocity too low pump does not run pump runs but no water or less water coming out refer to instructions of the respective manufacturers REMEDY clean eliminator fins check eliminator fins direction turn it if wrongly installed clean nozzles check air volume and set it correctly air washer operation only at nominal air volume change control respectively check main breaker check voltage on all motor phases check motor protective device check control clean nozzles clean filter element check water level of the resevoir check maximum limitation of humidity MAINTENANCE PROGRAM Maintained part Intervals of inspection maintenance Day Week Month Year To be carried Fan bearing maintenance free Motor bearing maintenance free V belt drive week of start up V belt drive 1x 1x inspection check of noises inspection check of noises retension of V belt retension of V belt Damper Volume flow control check function oil bearings clean slide rod Filter check rate of differential pressure drop a
3. filter differential pressure gauge is installed filter must be inspected weekly and clean or change as recommended by the manufacturer Aside from permanent Aluminum Cleanable Filter all other filter media are of throwaway type Filter of following sizes and quantities per unit model size are used Filter size and quantity Pre filter amp bag filter Quantity of filters Sizes Model No 24x12 inch 24x20 inch 24x24 inch 12x12 inch 36x12 inch 610x305 mm 610x508 mm 610x610 mm 305x305 mm 915x305 mm KW KWH 01 KW KWH 02 1 1 KW KWH 03 KW KWH 04 KW KWH 05 KW KWH 06 KW KWH 08 KW KWH 10 KW KWH 13 KW KWH 16 KW KWH 20 KW KWH 25 KW KWH 32 KW KWH 40 KW KWH 50 KW KWH 55 KW KWH 65 KW KWH 75 KW KWH 85 KW KWH 95 KW KWH 105 KW KWH 115 KW KWH 130 Alternate filters 4 4 HEATER SECTION HOT WATER HEATING COIL INSTALLATION Hot water inlet outlet should be connected to achieve a counter flow process in relation to the airflow Normally inlet of coil is on the bottom and outlet on the top on special requirements this can be reversed accordingly All piping connection should be stress or tension free In order to facilitate repair service and maintenance works the piping connections on heat exchangers must be easily removable or should be swivelled off after loosening Supply and return water flo
4. metallic bright and repaint with cold galvanizer 4 1 FAN SECTION ASSEMBLY Motor and fan are built together as one functional component on a commmon base frame internally isolated to the unit casing For power supply the local regulations to be followed Main voltage must comply with data given at motor name plate Thermal over current safety cut outs are to be provided by client the motor is not provided with protective device like thermistor protectors in the motor winding If thermal relay are used they are to be set in accordance to values shown on motor nameplate For maintenance and emergency function it is mandatory to shutdown the motor unit START UP After completion of all mechanical and electric power connection the correct rotation of fan motor to be checked Change the rotation by interchanging the 2 phases of power supply The maximum elongation of V belts occurs in the first operating hour Therefore it is highly recommended that after 30 minutes of full load operation the V belt tension should be checked MAINTENANCE Warning Prior to opening of any access maintenance panel unit to be shutdown Inspection of rotation can be done by opening the fan section access panel or through the sight glass Caution motor could be overloaded hold the access panel during inspection Inspection of rotation when door is closed only on unit sizes KW KWH 32 130 Warning Inspection inside the fan section cause high r
5. the optional siphon or P trap system design for KW KWH units Then terminate to the nearest drain Description design of siphon or P trap refer to page 5 START UP Caution Prior to charging of refrigerant the system must be leak tested vacuumed or dehydrated Only trained personnel should undertake this task Damage to enviroment Prior to start up of fan the siphon to be filled up with water After start of fan the height of siphon to be checked as no air may be drawn through or blown out 4 6 HEAT RECOVERY SYSTEM Please refer to manufacturer instructions 4 7 HUMIDIFIER SECTION AIR WASHER Please refer to manufacturer instructions STEAM HUMIDIFIER Please refer to manufacturer instructions 4 8 SOUND ATTENUATOR SECTION INSTALLATION Units are already equipped and splitter or baffles built in No further installation needed START UP Splitter or baffles surface to be checked for damages and can be repaired by pasting over with fiberglass mat MAINTENANCE Besides checking for physical damage and inspection of dust accumulation to splitter or baffle surface once a year no further special maintenance required Dust can be cleaned off by use of low pressure pressurized air or soft brush 4 9 MULTI ZONE SECTION For installation start up and maintenance please refer to item 4 1 to 4 5 5 MAINTENANCE INSTRUCTIONS FOR HYGIENIC UNITS Besides cleaning of all components and devices special attention must be given to the
6. with resin free oil 4 3 FILTER SECTION PRE FILTER AND BAG FILTER INSTALLATION Air filters are shipped loose packed in cartons to prevent damages dirt accumulation during transport and installation Remove maintenance panel and or open the access panel door of filter section Then on unit model up to KW KWH25 slide out the filter frame to install the air filters and fasten by spring clips Unit model KW KWH 32 and larger open the access panel door and maintenance personnel must walk in to install the air filter and fasten by spring clips When using manometer differential pressure gauge care should be taken for its horizontal alignment Fix connector to leaving air side and connector to entering air side The penetration through the unit panel should be air tight Measuring points to be located in such away that the air turbulence doesn t exist START UP After checking the air filters are undamaged and properly installed the filter differential gauge properly aligned refer to installation sheet All unit parts components are to be cleaned from any dust or coarse dirt Fill in the measuring liquid till zero position on the filter differential gauge After start up of fan and achieving the designed air volume note down the initial pressure drop MAINTENANCE When filter differential gauge indicates high level of pressure drop for final pressure drop refer to technical data sheet air filters to be cleaned or changed If no
7. SERVICE MANAUL Samil AIR CONDITIONERS DOUBLE SKIN AIR HANDLING UNITS KW amp KWH SERIES Contents Page Dalety INSUIUCTIONS A 2 General reMarksSs ain aa 2 Description of air handling UNIS o t e e a e 2 TRAansport INStalANON 2 Assembly Start Up amp Maintenance 6 a eed eT eet ese ae ead as 8 Fan SEGUON ane De hee ina oi ena eee 8 Airinlet Control Sections sieiacen 13 sc kai SRA Sea MR eRe A AL RA MRA RA ak 13 Filter SOCtOni 2 as cast a ein Ai te eR RA aod aati Senta 13 Pre tilter amp bag Tier ee taeda N canine ane tibia ieee a eee ee 13 Herter secho se uies 14 FOCWA aaa NT O E T E 14 Electric hoer een R E EE das See eee at eam aes E 15 15 Chilled Wate 15 Direct Expansion ei 16 Heat recovery 16 Humidifier Section ee hve agente eee 17 Ail WASNOD A
8. ape near the profile edge on one of the section face area Sections are to be aligned on foundation or pedestal and to be pushed together up to 10 cm distance Now fix the gripping belt clamp around the section pull together up to 1 cm distance and align the section Finally fix all connecting screws quantity as per the fastener kit By use of gripping belt clamp pull section tight together and fix the connecting screws Unit installation Unit installation Panel design KYY Hygienic design Corner profile Comer profile Gap cover Seal Tape Tesamoll 19 X 6 mm Silicon sealant Seal Tape Tesamoll 19 6 mm Outdoor Installation Silicon sealant Gap cover Weatherhood Cover Detail of top weatherhood joint Top section Corner Profile Connecting side bar Bottom section Stacking of sections CASING START UP Prior to start up all maintenance panels are to be closed Check all maintenance panels and locks for proper closure Specifically for all maintenance on positive pressure side of fan ALIGNMENT OF PANELS DOORS Prior to final alignment the unit installation position to be checked and levelled INSPECTION Damages of outside unit panels casing to be cleaned from dirt then treated with primer and repaint with touch up paint For galvanized casing parts the damaged portion to be rust free
9. ation of unit OBSERVE SAFETY INSTRUCTIONS Following signs of safety on this maintenance manual must be observerd A Warning To prevent personnel injuries AN Caution To prevent damage to material and environment A Note Reminder for useful informations and advises 1 GENERAL REMARKS Congratulations You are now the owner of a double skin air handling unit by CLASSIC AIR CONDITIONERS This unit is designed and manufactured by adapting all aspects of air conditioning and static load force requirements Each unit needs a certain preventive maintenance to ensure continuous and safety operation This applies that your air handling unit need to be checked and serviced periodically For exact detailed informations please refer to this maintenance manual 2 DESCRIPTION OF AIR HANDLING UNITS CLASSIC AIR CONDITIONERS double skin air handling unit consist of standard sections They are assembled to various configurations as per the technical requirements by the client Generally the units are shipped in sections The casing consists of rigid galvanized sheet steel profile construction joint by glass reinforced polyamid corners Panels are of double skin design with non combustible rockwool or fiberglass insula tion according to DIN 4102 and NFPA 90A standards Thickness 30 mm 50 mm Panel design outside 0 75 mm thick dark gray coated inside 1 25 mm thick galvanized steel sheets 3 TRANSPORT INSTALLATION Warning keep a
10. belts and retension them if necessary Attention 1 When mounting V belt in shorter shafts distance do not force belts into grooves by screw drives or similar object 2 In case of multiple V belt drives replace always all belts at the same time Care should be taken to ensure that belts have the same length use matched sets only 3 Pulleys shall be properly align CHECK OF PULLEYS ALIGNMENT Max Range Y 0 01 max 1 4 When replacing V belts the same belt type profile should be used again EXPLOSION HAZARD 5 Warning For explosion hazardous plant application only electrically conductive V belts may be used Explosion hazard 6 Regular checking of belt tension and retensioning in intervals of about 800 operating hours ensure longer life of belts Abnormal heating excessive flapping of the belt between pulleys and noise are indication of insufficient belt tension Insufficient tension lead to slip and premature failure as well CHECK OF V BELT TENSION Correct belt tension can be determined as follows 1 Measure belt length upper length between pulleys or calculate it by the formula 2 According to table below determine power P by which the belt will be loaded as per the belt profile pitch diameter RPM of the small pulley as well as ratio of transmission At standstill pretension of belt shall have a deflection of 1 per 100 mm belt length between pulleys wh
11. en defelction power P arise at each belt Belt profile Pitch pulley Power P in kg to deflect V belt RPM of small pulley diameter dw 700 1450 2800 4000 Transmission 3 1 1 35 0 9 1 57 1 09 1 71 1 21 2 11 1 36 2 4 0 66 2 55 1 82 3 28 2 16 3 6 2 5 3 8 2 65 5 33 3 45 5 9 3 9 6 numbers of belts V BELT PULLEY WITH BUSHING ASSEMBLY OF PULLEY SA The pulleys machined surface must be cleaned and degreased Fit pulley and bushing together and align the fixing holes Grease bolts slightly screw them slightly into the thread holes of the bushing Slide pulley with bushing into the shaft align it and tighten bolts uniformly for tightening torque refer to torque schedule table on next page TORQUE SCHEDULE Bushing No Tightening Torque Numbers Size inch Length inch Nm 1 2 1 2 5 7 3 8 5 8 20 3 8 5 8 20 7 16 7 8 31 1 2 1 49 5 8 1 1 4 92 5 8 1 1 4 92 1 2 1 1 2 10 1108 1210 1610 2012 2517 3020 3030 3535 DISMANTLING OF PULLEY Remove the bolts Tighten one of bolt into pulley thread hole until pulley get loose from bushing Now remove pulley bushing by hand Don t use any tools ADJUSTABLE PITCH MOTOR PULLEY If drive is equipped with an adjustable motor pulley fan rom and air volume can be varied within the fan performance range Caution When adjusting motor pulley do not exceed
12. ible if all connections are dismantled Remove coil by sliding out from its guide rail Prior to start of heating period aside from cleaning it is recommended to check the freeze protection thermostat as well as water pressure level of system and air vents Caution Improperly vented coil and system interrupts circulation of water flow or insuficient quantity Freezing occurs at ambient temperature below zero ELECTRIC HEATER SECTION INSTALLATION Electric power is to be supplied according to wiring diagram on the terminal box of the heater or as per attached wiring diagram To protect the unit components against over heating and prevent fire the electric heater is equipped with over heat safety thermostat The overheat safety thermostat deenergized the heater on high temperature Furthermore it is mandatory to install airflow switch and optionally interlock the fan motor with the operation of the electric heater Meaning If fan motor shutdown for any reason the electric heater should be deenergized START UP Check all electric connection and function of safety devices MAINTENANCE Beside a periodic check of function no further maintenance work is required Warning Prior to opening of access door the unit to be switched off Personal Injury 4 5 COOLING SECTION COOLING COIL INSTALLATION Chilled water inlet outlet should be connected to achieved a counterflow process in relation to the airflow Normally inlet of coil is on t
13. isk of accident due to V belt and fan During inspection of fan motor following can be observed flapping of V belt wobbling of fan impeller bearing noise unbalance fan impeller MAINTENANCE REPAIR WORK FOR FAN MOTOR Warning If no lockable repair switch is provided switch off circuit breaker or remove fuses at switchboard Both provisions to be labeled at unit gt MOTOR Regarding bearings maintenance refer to manufacturer instructions Lubrication instructions normally are given on motor nameplate Bearings Generally only proven and low noise accuracy ball bearings are fitted with theoretical life time of minimum 200 000 operating hours The V belt and drive pulleys to be calculated accordingly Permissible bearing loads not to be exceeded V belt tension KW KWHO01 KW KWHO2 with motor saddle for tension of V belt KW KWHO3 KW KWH130 with parallel sliding rail for tension of V belt For tension of V belt safety screw of spindle at sliding rail see figure above to be loosened and spindle turned clockwise until recommended V belt tension is reached Caution Prior to start up all screws bolts to be checked and tighten Damage of material HIGH EFFICIENCY NARROW V BELTS Possible elongation of new V belt drives is about 80 in the first 15 hours of operation Therefore in the beginning deflection f shall only be approximate 70 of the calculated value After 50 hours of operation recheck V
14. ither remove the coil or clean in placed Now dismantled the drip eliminator if provided as well Cleaning can be now done by pressurized air or by spraying of water with detergent additives After cleaning the coil and drip eliminator if applicable then it has to be reassembled Attention Correct direction of drip eliminator fins vertical position Caution PVC drip eliminators are suitable up to air temperature of 80 C only Material damage If necessary drain pan can be cleaned separately as well After re assembly of integral parts they can be pushed into guide rail Caution Prior to start of cooling period heat exchanger to be checked for correct airflow and system pressure otherwise the full cooling capacity cannot achieved If cooling media is not mixed with glycol in winter freezing can happened if air temperature is below zero In this case either cooling not needed empty system coil and purge it with compressed air add ethylene glycol according to winter ambient air temperature Material damage EVAPORATOR SECTION INSTALLATION Installation of refrigerant connecting piping is to be in such way that service and maintenance are not obstructed We recommend to install fix the piping to top or if on maintenance side panel should be in between of webs unit profile only Make sure maintenance panels can be removed without cutting the pipes Connect a siphon or P trap to drain outlet of unit 40 mm dia We recommend
15. maintenance of filters A continuous monitoring of filters is imperative as well as replacement at maximum recommended final filter pressure drop Appearance and indication of defects shall be attended in due time Intervals of maintenance inspections should be in period stated under item maintenance intervals Cleanliness of plant Further they shall be depending on the experience of maintenance staff and ambient condition influence of the area where unit is installed Air Handling Unit Each filter stage should must have filter gauge for indication of filter differential pressure drop For clear and correct checking of filter condition each filter section shall be equipped with separate nameplate with indication of following filter class type of filter media size nos of filter inserts nominal air volume CFM L S m h initial pressure drop recommended final pressure drop date of last maintenance Plant room and size of unit shall be designed in such away the reliability and demands of hygienic conditions of whole installation are assure on high standard of government rules For quick and easy dismantling removal of unit components any piping system should be dismantled easily Air conditioning plant for Operating Room OR Shutdown is allowed for urgent maintenance or repair works only However the time should be limited to short period and must notify the hospital management General maintenance periods and works should be in accorda
16. maximum fan rpm and full load motor current Damage of motor Manufacturer has already set adjustable pulley to required pitch diameter according to unit technical data Variation of the air volumes can be made according to the following instructions Adjustable pitch pulley Increase pitch diameter Decrease pitch diameter ADJUSTMENT OF PITCH PULLEY DIAMETER When adjusting pitch diameter proceed as follows refer to example a Determine adjustment Adjustment max pitch dia new pitch dia 4 x regulation factor b Loosen adjustment bolt see figure c By closing adjustable pulley find out maximum pitch diameter After this open it to get the calculated RPM Adjustment should only be made in 1 4 turn d By doing so a thread hole in the idle pulley is then matched automatically with the flatening of the fixed pulley Turn in adjusting screw into this thread hole and tighten it strongly Adjustable pulley Profile SPZ SPA Outside dia Outside dia Pitch dia Regulation factor 84 62 80 1 64 95 73 91 1 64 78 96 1 64 90 1 45 76 1 64 88 1 64 97 1 64 1 54 1 54 1 54 1 54 EXAMPLE OF ADJUSTMENT Conditions Belt profile SPZ adjustable pulley 100 mm outside diameter maximum pitch diameter refer table above 96 mm regulating factor refer table above 1 64 new determined pitch Diameter 83 mm Requested Adjustment no of tur
17. nce to hospital organization rules for OR and agreed by hospital management FAN BREAKDOWN Note In case supply fan of overpressure system breakdown the exhaust fan shall be switched off automatically as well In case exhaust fan of underpressure system breakdown supply fan shall be switch off automatically as well In both cases electric interlock in control switch board is recommended POWER FAILURE Note Operation of plant besides cooling system must not suffer power failure Use of emergency power diesel generator recommended HYGIENIC INSPECTION Note All air conditioning plants units to be inspected periodically in view of hygienic application after start up Suggestion by hospital management FAILURE 2 Not enough air 3 Motor overloaded 4 No heating electrical heater 5 No heating 6 No cooling 7 Water leakage in the cooler section TROUBLESHOOTING PROBABLE CAUSE motor does not run motor running but V belt broken dampers are not open dirty filter check pressure drop indicator V belt slipping check whether flow controllers are set to full air volume fan turn in reverse direction air volume too high V belts pulleys wrongly installed no power at heating element power available at heater element but no heating no heating media valves do not open air in the heat exchanger no chilled water valves do not open air in the heat exchanger condensa
18. nd or replace filter at recommended final differential pressure drop Heater clean fins vent piping coil bleed prior start of heating season Cooler clean fins vent piping coil clean drip eliminator fins prior start of cooling period Washer start up Washer maintenance water hardness up to 4 DH 4 2 pH up to 87 DH 8 4 pH above 8 DH 8 4 pH appr 3 appr 6 x check pH value of water check accumulation of mud complete cleaning of water complete cleaning of water complete cleaning of water Attenuator 1x clean splitters or baffles Housing 1x mend damages and clean Legend Hygienic type DH German Hardness pH American Hardness x Number of time 20 observe regulation of local hygiene institute requirement
19. ns Solution 96 83 Adjustment 1 98 2 turns open 4x 1 64 4 2 AIR INLET CONTROL SECTION DAMPERS INSTALLATION Electric connection of damper motor to be done in accordance to manufacturer instructions ADJUSTING TORQUE Nm Model No 1 Damper 2 Dampers 3 Dampers 1 Damper mixing box mixing box air tight KW KWH 01 1 8 1 8 2 9 3 0 KW KWH 02 2 1 2 1 3 2 3 4 KW KWH 03 2 2 2 2 3 3 3 5 KW KWH 04 2 5 2 6 3 9 3 8 KW KWH 05 2 5 2 6 3 9 3 8 KW KWH 06 3 3 5 2 7 8 6 2 KW KWH 08 3 3 5 2 7 8 6 2 KW KWH 10 4 0 5 5 8 3 6 9 KW KWH 13 4 0 5 5 8 3 6 9 KW KWH 16 6 0 8 0 12 0 9 9 KW KWH 20 6 0 8 0 12 0 9 9 KW KWH 25 7 5 12 0 18 0 14 4 KW KWH 32 7 5 12 0 18 0 14 4 KW KWH 40 10 0 13 0 20 0 18 4 KW KWH 50 10 0 13 0 20 0 18 4 KW KWH 55 9 7 19 3 16 6 KW KWH 65 10 9 21 8 18 8 KW KWH 75 11 9 23 8 20 0 KW KWH 85 12 9 25 8 21 2 KW KWH 95 14 5 29 0 23 8 KW KWH 105 23 8 40 4 KW KWH 115 25 0 41 8 KW KWH 130 27 1 45 9 Caution Never start fan when dampers are closed Fan motor must be interlocked with damper motor accordingly Damage of equipment MAINTENANCE Dampers are with plastic bearings Normally they don t require any maintenance However it is recommended to check periodically connecting rods bearings as well as crank arm fulcrums and if necessary to oil them In case of heavy dirt we recommend to clean by compressed air and lubricate
20. op and outlet on bottom All piping connection should be stress or tension free 15 In order to facilitate repair service and maintenance the piping connections on heat exchangers must be easily removable or should be swivelled off after loosening Supply and return water flow have to be closed by gate valves If cooling coil are not provided with purging and draining point the customer has to provide respectively Connect a drip siphon or P trap to the drain outlet connection 40 mm dia We recommend the optional siphon or P trap system design for KW KWH unit Then terminate to nearest floor drain Description design of siphon or P trap please refer to page 5 START UP Prior to start up check all connection for correct and tight assembly For flanges check and re tighten bolts If automatic air vents are not provided open all pipe ventilation devices prior to water filling of system After filling the system pressurize the same and check for leak Prior to start up of fan the siphon to be filled up with water After start of fan height of siphon to be checked as no air may be drawn through or blown out MAINTENANCE Essentially maintenance works after start up is performed to check tightness of system and components as well as cleanliness of coil Dirty coil reduces heat transfer efficiency At continuous operation cleaning of coil should be done every 6 months or at seasonal operation prior to start of cooling period For cleaning e
21. rea clear underneath the suspended loads don t pass below the suspended load Personal injury Caution protect air handling unit against impact shocks or being drop don t let unit rest corners or edges don t support the unit on corners only don t lift the unit on pipe stubout other than lifting points Damage of unit LIFTING BY forklift stacker trucks with squared timber LIFTING BY crane FOUNDATION Foundation for the air handling unit shall be 50 100 mm wider than the unit base dimension on each side Surface of foundation shall be levelled Height Design of Foundation shall consider Shipping weight of unit Height of condensate syphon or p trap Vibration isolation Solid sound conduction transmission absorption CONCRETE FOUNDATION Concrete foundation should withstand the vibration KW KWH unit Monolithic concreate foundation PEDESTAL FOUNDATION With the pedestal foundation construction the unit bottom panel profile should be supported The intermediate foundation pedestals should match the unit section joint connections Section joint KW KWH unit Strip foundation KW KWH unit Strip beam foundation POINT LOAD FOUNDATION At point load foundations the units bottom panel profile and sectional joints should be supported The intermediate foundation load points should match to unit sectional joint connec
22. te drain without siphon height of siphon too low no water in the siphon suction side dampers open only after start of fan so that the water is drawn out from the siphon drip eliminator does not prevent water carryover REMEDY check main breaker check voltage on all motor phases check motor protective devices check control check frost protection replace V belt check and open all dampers of unit and duct system replace or clean filter retension V belt drive check actuator electric power supply If damage change if motor out of order burnt out broken motor has to be changed interchange any of the 2 phases power supply to the motor adjust air volume V belt drive pulley check speed ratio and change drive check main breaker check control check overheat safety device check resistance of heater check hot water supply check hot water pump check control check operation of valves vent heat exchanger check chilled water supply check chilled water pumps check control check operation of the valve purge heat exchanger install siphon or P trap increase height of siphon observe maximum pressure losses fill siphon or P trap with water prior to start of cooling period change control in such a way that fan starts running only at open suction side dampers clean eliminator fins check eliminator fins direction turn it if wrongly installed FAILURE 8
23. tions Section joint KW KWH unit Point load foundation KW KWH unit EF 10 Point load Pedestal H m foundation ISOLATED FOUNDATION The foundation frame of structural steel reinforced or steel base frame mounted on vibration isolators to prevent solid sound conduction transmission to the building structure Concrete pad below the vibration isolators serve as the housekeeping pad This foundation design prevents vibration and solid sound conduction transmission to sensitive areas Section joint KW KWH unit Steel base frame Isolator SOLID SOUND REDUCTION For prevention reduction of solid sound conduction transmission soft material to be used The deep soft material do have higher sound adsorption characteristic efficiency Mineralwool with sound absorption characteristic frequency between 20 30 Hz is ideal in many cases VIBRATION ISOLATION For selection of vibration isolator and aside from the weight of units foundation the air thrust load must be considered also The arrangement of equal vibration isolations must be symetric to the unit thrust point load Steel spring isolators needs additional solid sound silencer DRAIN HEIGHT FOUNDATION HEIGHT Connection of condensate drain pipe with siphon P trap to be done by client user Siphon P trap must not be under pressure Prior to start up and after a long period of shutdown operation siphon P trap m
24. ust be filled with water DESIGN OF SIPHON P TRAP Draw Thru Blow Thru h1 Unit not in operation Unit not in operation Unit in operation Unit in operation without condensate water without condensate water Unit in operation Unit in operation with condensate water with condensate water W h Ap mmWs d1 20mm h 1 AP mm Ws d1 20mm h ap mm Ws h1 20mm Note A p Total static pressure mm SERVICE ACCESS lt Air Direction B Unit width gt B 120 ty Cooling Coil removal maintenance area 4 ASSEMBLY START UP amp MAINTENANCE 4 0 UNIT SECTION INSTALLATION If you use a pedestal base please consider cross member beam in every section joints Changes to be agreed by the manufacturer For joining of sections the supplied Fastener Kit compose of screws washers and sealtape to be used SECTION ASSEMBLY KW series KWH series Fastener Kit Unit type KW KWH Quantity per joint each KW KWH01 13 KW KWH 16 50 KW KWH 55 130 Panel Thickness 30mm 1 Hexagonal screw M 8 x 80mm 2 Spring washer M 8 3 Cap nut hexagonal M 8 4 Self adhesive seal tape 5 Assembly clamp 6 Hexagonal screw M 6 x 20mm Panel Thickness 50mm 1 Hexagonal screw M 8 x 120mm 2 Spring washer M 8 3 Cap nut hexagonal M 8 4 Self adhesive seal tape 5 Assembly clamp 6 Hexagonal screw M 6 x 20mm SECTION ASSEMBLY Apply seal t
25. w have to be closed by gate valves If heat exchangers are not provided with purging and draining facilities the customer has to provide respectively To avoid damages by freezing to heat exchangers frost protection sensors are to be provided behind preheaters so that at temperatures below 41 5 C the heating pump is switched on heating valves are induced to open or outside air dampers to close The frost protection sensor should be equipped with a capillary sensor approximately 3 meter and 6 meter long and shall be braced over the coil face area Caution Frost dangers occurs to the lower tubes of coil first Brace capillary elements correspondingly Damage to coil However the type of frost protection is determined by client supplier of equipment START UP Prior to start up check all connection for correct and tight assembly For flanges check and re tighten bolts If automatic air vents was not provided open all pipe purging points prior to filling of the system After filling pressurize the system and check for leak MAINTENANCE Essentially maintenance works after start up is performed to check tightness of system and components as well as coil condition Dirty coil reduces efficiency At continuous operation cleaning of coil should be done every 6 months or at seasonal operation prior to start of heating period Cleaning can be done by use of pressurized air or by spraying water with detergent additives Removal of coil is poss
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