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Related Manuals for Wolf AHU TE
Summary of Contents for Wolf AHU TE
- Page 1 Installation and maintenance instructions Air-handling unit AHU TE/AHUW TE (Translation of the original) WOLF GMBH / POSTFACH 1380 / D-84048 MAINBURG / TEL. +49.0.875174-0 / FAX +49.0.875174-1600 / www.WOLF.eu Art.-Nr.: 3064058_201610 Subject to technical modifications...
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Page 2: Table Of Contents
AHU TE AHUW TE Contents Standards ....................3 Function symbols..................4 Symbols /Safety instructions ...............5 Delivery / Handling ..................7 Installation instructions ................9 Power connection ..................22 Commissioning ..................24 Maintenance ....................28 Frost protection..................31 Shutdown / Fire ..................32 End-of-life disposal ..................32 Checklist ....................33 For type of device, serial number and order number, see type plate on the equipment. Order-related device specifications such as weights, dimensions, sound data, spare parts, energy data etc. -
Page 3: Standards
AHU TE AHUW TE Standards Standards The following standards and regulations apply to the AHU TE/AHUW TE series air- handling units: - Machine directive 2006/42/EU - Low voltage directive 2014/35/EU - EMC directive 2014/30/EU - Pressure vessel directive 97/23/EU - DIN EN ISO Safety of machinery;... -
Page 4: Function Symbols
AHU TE AHUW TE Function symbols Function symbols Fan section Fan section Bag filter section Heater section KGXD section KGX section Empty section Empty section with damper Empty section with Empty section with damper and tray tray Silencer section Humidifier section Heater section with Cooling section frost protection frame °C... - Page 5 AHU TE AHUW TE Symbols /Safety instructions General These installation and maintenance instructions apply only to WOLF AHU TE/AHUW TE series air-handling units. Each person tasked with installing, commissioning or maintaining the equipment must read through these instructions before commencing work. Compliance with these instructions is mandatory.
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Page 6: Symbols /Safety Instructions
AHUW TE Symbols /Safety instructions Intended Use Intended use of the Wolf air conditioning units is exclusively restricted to their use for ventilation purposes. The air conditioning units are to be used only for the transport and conditioning of normal air. This includes the filtering, heating, cooling, humidify- ing and dehumidifying of the air. Compliance with the instructions supplied with the... - Page 7 On no account may cladding panels be removed in order to lift the device, since the cladding panels are structurally integrated in the device's bracing system. No additional loads may be lifted together with the transport unit supplied by Wolf. 3064058_201610...
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Page 8: Delivery / Handling
(make adequate provision for the foundation height). It is advisable to install a waterproof foundation for units with humidifiers and/ or cooling coils installed above rooms containing moisture-sensitive equipment (e.g. IT rooms, etc.). Final location Always install AHU TE air-handling units in rooms where frost cannot occur. Note If the occurrence of frost at the final location cannot be ruled out, adopt suitable measures to prevent water-containing components from freezing. If an outside thermostat is installed ensure it is adequately insulated to prevent the air-handling unit from shutting down inadvertently (see frost protection measures, page 25). -
Page 9: Installation Instructions
Requires permanent securing against tipping over. Note Risk of tipping Base frame / foundation WOLF internal unit base frames (suitable only for internal installation) are always sup- plied loose (in advance). base Internal unit base frame Base frames delivered loose are knocked down for shipping and must be assembled, aligned and secured to the base on site in accordance with the instructions enclosed with the base frame. - Page 10 AHU TE AHUW TE Installation instructions Base frame / It is essential to ensure that the base on which the units and components are to be Note assembled and installed is level, horizontal and of adequate load-bearing capacity. foundation base The base frame must be horizontal, and the foundation must be level and horizontal AHU TE: (check with browning rod). To prevent the inspection doors from jamming, the lower base frame must make full- surface contact with the base;...
- Page 11 AHU TE AHUW TE Installation instructions WOLF base frames (including integrated drip strip) are either permanently fixed to the appliance or supplied loose. Base frames delivered loose are knocked down for shipping and must be assembled, aligned and secured to the base on site in accordance with the instructions enclosed with the base frame.
- Page 12 A base frame or plinth (height approx. 305 mm) is always required for AHU TE or AHUW TE appliances with scrubber, because the scrubber bottom lies lower than the underside of the remaining appliance. The required height of the base frame depends on the type of scrubber and is specified separately in the course of the design calculations.
- Page 13 (take care not to damage the components). Remove the screws from the corners of the frame to permit removal of the frame. Undo screws AHU TE 21 - 380 AHU TE 450 - 1000 Immediately before assembling the vertical hollow sections with the floor and ceiling panels, seal the hollow sections with the sealant supplied. Otherwise the water tightness of the appliance cannot be guaranteed.
- Page 14 AHU TE AHUW TE Installation instructions Roof The weatherproofed AHUW TE version always has a fully installed roof made of zinc- plated sheet steel. Split units are delivered to site with the roof sections prefitted to the individual sections. If the interface at which two units are split does not line up with the pitch of the roof sections, the requisite single roof section is supplied loose and must be installed on site once the air-handling unit has been assembled and installed.
- Page 15 Connecting units All the small items required for assembly are packed inside a component with inspection door (preferably fan section), along with the accessories supplied loose. A label inscribed "Zubehör im Gerät" (Accessories inside) identifies the component in question. AHU TE 21-380 AHU TE 450-1000 Self-drilling/tapping screw Self-drilling/tapping screw 6.3 x 90 Mat. no. 3490238 6.3 x 120 Mat.
- Page 16 AHU TE AHUW TE Installation instructions Connecting units M8 screws are used to join the cubes unit. The frame sections are provided with fixing with screws elements at the appropriate points. Always ensure that the individual appliance parts are pushed firmly together before fitting the M8 screws. External appliance connection Tensioning straps may be used to make the assembly of the cube units easier. Position the appliance parts next to each other and close the gap between them with tensioning straps.
- Page 17 AHU TE AHUW TE Installation instructions Internal appliance connection The individual transport units can always be lifted and transported when units are joined internally. Variant 1 Fixing elements M8 screw When tightening screws and nuts, always counterhold with a second open-ended spanner.
- Page 18 AHU TE AHUW TE Installation instructions Piggyback units Piggyback units supplied with top and bottom units separated must be securely connected (air intake/exhaust air units on site (after the units have been positioned) and sealed tight on the whole perimeter stacked one on top of the other) against rainwater penetration by means of a permanently elastic seal (weatherproof version AHUW TE).
- Page 19 AHU TE AHUW TE Installation instructions Fan section Ensure that the fan shaft is horizontal in its bearings. If the shaft is not perfectly horizontal Note the ball bearing will suffer damage and service life will be substantially reduced. Transportation Remove the transportation locking devices from fans mounted on spring-loaded vibration locking devices dampers. Flexible connections Remove the transportation locking devices.
- Page 20 AHU TE AHUW TE Installation instructions Scrubber section When installing the scrubber take care not to permit dirt or other foreign matter to enter Note the scrubber, as otherwise the pump impeller will be obstructed and this will either significantly impair pump operation or result in its destruction. Given normal requirements, the water for the scrubber must comply at least with the...
- Page 21 Screws section Overlap Side panels (rain gutter externally) Versions AHU TE 21 - 210 AHU TE 270 - 380 AHU TE 450 - 600 AHU TE 680 AHU TE 680 - 1000 AHU TE 850 - 1000 3064058_201610...
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Page 22: Power Connection
AHU TE AHUW TE Power connection Power connection The power connection must only be carried out by trained, qualified electricians to a standard compliant with the applicable regulations (VDE, local power utility, etc.). If the intake air / exhaust air fan shuts down or fails, all control valves must automatically close and the DHW/cold water and scrubber pumps must switch off. Use only control valves that close when de-energised and antifreeze thermostats without disabled reset, as otherwise components will continue to operate even if the system shuts down. - Page 23 AHU TE AHUW TE Power connection Wiring for single speed Wiring for three speeds Motors up to 2.2 kW are generally started DOL, (2 separate windings, 1 as Dahlander pole changing circuit) from 3 kW as in star-delta formation. Wiring for fan drives 500/1000/1500 rpm or 500/1000 rpm Winding wiring diagram as Dahlander pole changing circuit.
- Page 24 AHU TE AHUW TE Commissioning Fan section As required by DIN/EN 1886, tools are necessary for opening the unit. Always wait for the fan to run down to a complete standstill before opening inspection doors. The partial vacuum inside the unit could draw in loose or slack parts when the door is opened, which could cause severe damage to the fan.
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Page 25: Commissioning
AHU TE AHUW TE Commissioning Frequent starting and stopping is to be avoided. In case of operation with a frequency converter, it must be checked that the ‘over modulation’ function on the frequency converter does not lead to an impermissible increase in the resonance vibration within the operating range (speed range). - Page 26 Closing the bypass damper means that the outside air is preheated. Opening the bypass damper provides a means of defrosting the plate-type heat exchanger if ice forms in winter. Electric heating coil To prevent overheating, ensure that the air flow rates comply with the minimum value specified below (figures are in m³/h): Appliance type AHU TE/AHUW TE 21/43 64/96 130/170 210/270 320/380 2200...
- Page 27 AHU TE AHUW TE Commissioning - Check the cold water temperature: min. cold water temperature +2 °C; if the evaporation temperature is < +2 °C there is a risk of ice forming on the heat exchanger fins which would obstruct or prevent the air flow. Antifreeze agents are hazardous to health. Always comply with the safety instructions issued by the manufacturer of the antifreeze used on site. Cooling coil Before filling the refrigerant system with refrigerant, take suitable measures to ensure (direct-expansion evaporator) that no traces of residual moisture remain in the pipework (e.g. evacuate or purge the pipework with dry nitrogen). Check evaporation temperature: min. evaporation temperature +2 °C; if the evaporation temperature is < +2 °C there is a risk of ice forming on the fins of the heat exchanger obstructing or preventing the air flow. The direct-expansion evaporator will be unable to achieve its rated performance unless Note the refrigerant used is the same as that on which the design was based (R22 or R134a).
- Page 28 AHU TE AHUW TE Maintenance Before undertaking maintenance work, always ensure that the system main isolator and the repair switch(es) are OFF and locked to prevent unintentional reactivation. Activation without the knowledge and consent of everyone working on or near the machine could expose them to risks due to rotating and moving parts.
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Page 29: Maintenance
AHU TE AHUW TE Maintenance Test forces (F) and deflection value (x) for narrow high performance vee-belts DIN 7753 Belt profile Effective diameter Force F of the small pulley (N / belt) (mm) 67 - 95 10 - 19 100 - 140 15 - 20 150 - 200 19 - 27 100 - 132... - Page 30 AHU TE AHUW TE Maintenance Heat exchanger Check periodically for contamination and clean as necessary. Clean the heat exchanger by: (heating coil / cooling coil / KGX) - Vacuum extraction - Blowing down with compressed air - Spraying with water or steam...
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Page 31: Frost Protection
Heat exchanger LPHW / MPHW heating coils, chilled water cooling coils, plate-type heat exchangers: - Always install AHU TE air-handling units in rooms free from the risk of frost. - Operate with commercially available antifreeze and frost stat. - When the heating system is shut down drain all water-retaining parts and use compressed air to blow out residual water. -
Page 32: End-Of-Life Disposal
UV radiation. If load-bearing metal and plastic components have aged, they must be transported using safe, modern Wolf lifting equipment. Metal and plastic components should be sorted and disposed of separately according to the local regulations. Electrical and electronic components must be disposed of as electrical waste. -
Page 33: Checklist
AHU TE AHUW TE Checklist Recommended checklist for hygienic operation and the maintenance of air-handling systems Activity Possible measure Months Outside air/expelled air apertures Chamber internals/appliance casing Check for contamination, damage and Clean and repair corrosion Air filter Check for excessive contamination and Change the air filters concerned if damage (leaks) the last change was not more than 6... - Page 34 AHU TE AHUW TE 3064058_201610...
- Page 35 AHU TE AHUW TE 3064058_201610...
- Page 36 Wolf GmbH Postfach 1380 • D-84048 Mainburg • Tel. +49-8751/74-0 • Fax +49-8751/741600 Internet: www.wolf-heiztechnik. AHU TE / AHUW TE 3064058_201610 Subject to technical modifications...