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Related Manuals for AERA EVO-MODULAR Series
Summary of Contents for AERA EVO-MODULAR Series
- Page 1 EVO-MODULAR User’s Manual AIR HANDLING UNITS...
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Page 2: Table Of Contents
Contents Information ..........3 General Transport Installation ..........5 Installation and Assembly ........7 Installation of Components and Accessories ..13 Electrical Connection ..........18 Commissioning and Maintenance ......24... -
Page 3: General Information
Any modifications in the design and/ or installation of the AHU that are carried out without discussion with AERA and without advance written agreement will result in the loss of the right to any warranty claims and any claim for injury to personnel as a result of these modifications. - Page 4 Any wiring faults on motors will cause damage for which AERA cannot be held responsible. • The control package ( either bought from AERA as an accessory or sourced from a third party) must include frost protection routines and components to prevent freezing damage of internal components (coils, heat recovery devices, humidifiers, …)
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Page 5: Transport Installation
Transport Installation Storage and preventive maintenance In case of external storage, units must be protected from adverse weather conditions. With internal and external storage, the unit must also be protected against everyday damage. To avoid defects on the bearings, the fans and the motors must be manually turned every month. - Page 6 Transport Installation With larger units, the use of several forklift may be required. When rigging the unit by crane, follow these guidelines: 1. If lifting holes are provided on the unit base frame, sling spreader bars (see Figure 1, part 3). 2.
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Page 7: Installation And Assembly
The units must not be stacked with other components that are not part of the unit. This is only permissible if the necessary load-bearing capacity has been specially incorporated into the units delivered from AERA When connecting the duct it must be ensured that no foreign materials can enter the unit. If necessary, a suitable wire mesh guard can be installed by the third party at the opening on the discharge/intake side of the unit. - Page 8 Installation and Assembly Minimum clearances • In order to be able to remove fans, heat exchangers, droplet eliminators, etc. and also perform servicing and maintenance, a minimum clearance of one unit width must be maintained on the operating side. • A minimum clearance of 600 mm between the rear of the unit and the wall must be maintained if the internal dividing joint connectors cannot be used due to the unit configuration.
- Page 9 Installation and Assembly NOTE Particular care must be taken to ensure compliance with the precise dimensions of roof openings and to ensure that the foundation is level. Structure-borne sound attenuation In order to reduce the transfer of vibrations from the unit to the supporting structure, anti-vibration mounts and structure-borne sound attenuating mats must be installed.
- Page 10 Installation and Assembly Removing transportation lugs/device/locks • All transportation lugs/devices/locks marked yellow on and in the unit must be removed prior to assembly. • Remove the transportation locks on the fan. • The transportation lugs on the roof must be removed. •...
- Page 11 Installation and Assembly Installation of individual modules To assemble individual modules (dividing joint) proceed as follows: • Do not forget to attach the sealing seal between the two modules while assembling the modules. Once you have connected the modules, make sure you stick the two modules with silicone. Figure 6-3: Installing individual modules DAMAGE TO THE UNIT! Do not attach tensioning belts/hoisting devices to heat exchanger connections, condensate drains...
- Page 12 Installation and Assembly • If the rear of the unit is not accessible, screw the interior dividing joint connectors in the corner together. Fig. 6-6: Internal view NOTE An additional dividing joint connector is provided in the middle of the profile (internally) where the internal unit width or height is 1240 mm or more –...
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Page 13: Installation Of Components And Accessories
Installation of Components and Accessories Installation of Components and Accessories In line with the connection of heat exchangers, humidifiers etc., the coil connection may only be carried out by specialists with the necessary knowledge of relevant accident prevention regulations and other standard regulations relevant to health and safety in the workplace, based on their training and experience. - Page 14 Installation of Components and Accessories Note Description Symbol Values Effects in event of deviation Hydrogen ion 7.5 − 9 < 7 Corrosion These limiting values are only basic concentration > 9 Fouling information about the water quality Calcium and Hardness 4 −...
- Page 15 Installation of Components and Accessories In addition, for air handling components that perform cooling function: • Insulate coil connections and pipes once the installation has been carried out to prevent the formation of condensation water. Condensate water that is formed accumulates in the stainless steel condensate tray and is drained via a drain spigot mounted on the condensate tray.
- Page 16 Installation of Components and Accessories Installation of humidifying equipment Refer to the accompanying documentation for information on assembly and installation. Also observe the German Drinking Water Act (Trinkwasserverordnung – TWVo). Recommended “Guide values for the quality of water circulating in the spray humidifier (air washer)”...
- Page 17 Installation of Components and Accessories The hydraulic seal in the siphon H must be greater than the maximum overpressure or underpressure (mm WC) in the unit (1 mm WC = 10 Pa). The dimensioning is performed using the equation below: Unit over-/underpressure(Pa) H(mmWC) = The height difference between the water drain and hydraulic seal must...
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Page 18: Electrical Connection
Electrical Connection Electrical Connection The electrical connection may only be carried out by specialists with the necessary know- ledge of relevant accident prevention regulations and other standard regulations relevant to health and safety in the workplace, based on their training and experience. Take protective measures! During installation and connection of the unit, additional protective measures must be taken into account when setting up low voltage equipment in accordance with the EC... - Page 19 Electrical Connection Motor protection Motor protection with PTC resistor sensors The AC motors contain between two and six PTC resistor sensors connected in series, depending on the motor size and type. The PTC resistor sensors are embedded in the windings of the motors in a way that optimises recording of the winding temperature. PTC resistor sensors are temperature-dependent semiconductor resistors.
- Page 20 Electrical Connection Extended motor protection In the case of a high start-up frequency, intermittent operation and switching rate, and to provide optimum protection against 2-phase running, we recommend that motors are protected by thermal overcurrent relays/motor circuit breakers, in addition to PTC resistors.
- Page 21 Electrical Connection Single-speed motor: 1500 rpm, voltage interchangeable Motor version: – up to 2.2 kW: 3 x 230 V with Δ connection, 3 x 400 V with Y connection – above 3 kW: 3 x 400 V with Δ connection, 3 x 690 V with Y connection 2-3 PTC resistor sensors, depending on the size of the motor...
- Page 22 Electrical Connection Three-speed motor: 750/1000/1500 rpm Dahlander and separate Speed 1: winding Y/Y/YY 750 rpm Motor version: 8/6/4 pole pole interchangeable Speed 1 and 3 with Y/YY Dahlander connection Speed 2: Speed 2 with Y connection, separate winding 1000 rpm 4-6 PTC resistor sensors, depending on the size of the motor Total resistance RK (20 °C) approx.
- Page 23 Electrical Connection Three-speed motor: 500/1000/1500 rpm Dahlander and separate Speed 1: winding Y/YY/Δ 500 rpm Only with motors from size 250, 45 kW Motor version: 12/6/4 pole pole interchangeable Speed 2: Speed 1 and 2 with Y/YY Dahlander connection 1000 rpm Speed 3 with Δ...
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Page 24: Commissioning And Maintenance
Commissioning and Maintenance Commissioning and Maintenance NOTE Data sheet and assembly instructions can be found on the inside of the equipment where this label appears. These documents must be removed prior to commissioning. Several subassemblies and components must be commissioned separately. The relevant steps are listed in the following chapter. - Page 25 Commissioning and Maintenance Basic cleaning and maintenance tasks ELECTRICAL HAZARD AND DANGER FROM ROTATING UNIT PARTS! OBSERVE PERSONAL PROTECTION MEASURES. In doing so, be sure to observe the safety information on page 24. • Remove excess dirt by wiping it off using a dry cloth or, if necessary, an industrial vacuum cleaner.
- Page 26 Commissioning and Maintenance Unit part Interval Task (months) 1 month • Clean and refill existing siphons. Units for installation 3 months • Check casing for damage/firm seating. indoors • Check/renew seals on all service openings. • Check panels for damage and corrosion, renew corrosion protection and check function of door safety catch (on discharge side).
- Page 27 Commissioning and Maintenance Unit part Interval Task (months) 3 months • Check filter for soiling, damage and odours. Basic requirements for all • Clean filter section. filters 6 months • Check whether the maximum permissible pressure differential (see Guideline RLT 01, for example) or pressure differential specified by manufacturer has been exceeded;...
- Page 28 Commissioning and Maintenance Unit part Interval Task (months) 12 months • Check for tightness and for possible contamination on the air side. Cooler with/ without • If there is a risk of frost, also check the safety devices regularly, droplet or take appropriate precautionary measures such as draining the eliminator equipment or adding antifreeze.
- Page 29 Commissioning and Maintenance Unit part Interval Task (months) 3 months • Check tension of drive belt, re-tension as necessary. Rotary heat exchanger 12 months • Clean heat exchanger fins – wet cleaning may only be carried out if a tray has been installed – never clean the heat exchanger fins with high pressure water or steam.
- Page 30 Commissioning and Maintenance NOTE If the air contains oil or aggressive substances, cleaning should be carried out more regularly as the sealing materials are only resistant to oil for a limited period. The following maintenance steps must be carried out: •...
- Page 31 Commissioning and Maintenance Maintenance of units for installation outdoors (roof units, weatherproof) The following maintenance steps must be carried out: • You should initially perform all steps described under „Maintenance of units for installation indoors“ on page 29. • Check tightness of unit roof. •...
- Page 32 Commissioning and Maintenance Maintenance of belt-driven fan unit ELECTRICAL HAZARD AND DANGER FROM ROTATING UNIT PARTS! OBSERVE PERSONAL PROTECTION MEASURES. In doing so, be sure to observe the safety information on page 51. DAMAGE TO UNIT When the fan is at a standstill and the unit heater control valve (water, steam or refrigerant) is open, temperatures occur inside the unit that are roughly equivalent to the inlet temperature of the heating medium (normally around 90 °C).
- Page 33 Commissioning and Maintenance DAMAGE TO UNIT AND NOTE Always reduce the distance between the axes to the point where the V-belt can be placed in the grooves without using force. The application of force during installation using tyre levers, screwdrivers or similar tools is not permitted. If the V-belt pulleys have multiple grooves, all V-belts must be replaced.
- Page 34 Commissioning and Maintenance To install the V-belt pulley, proceed as follows: Hexagon-socket screws for securing pulley • Position the pulley and sleeve so that they engage with one another. Shaft Align both holes and screw in screws without tightening. Sleeve •...
- Page 35 Commissioning and Maintenance Commissioning of direct driven fan unit ELECTRICAL HAZARD AND DANGER FROM ROTATING UNIT PARTS! In doing so, be sure to observe the safety information on page 24. • Remove any installation residues and foreign substances that may be present in the impeller and intake area.
- Page 36 Commissioning and Maintenance Basic maintenance work to be carried out on all filters ELECTRICAL HAZARD AND DANGER FROM ROTATING UNIT PARTS! OBSERVE PERSONAL PROTECTION MEASURES. In doing so, be sure to observe the safety information on page 24. DANGER DUE TO COMBUSTIBLE SUBSTANCES! The filter material may be combustible and may easily catch fire.
- Page 37 Commissioning and Maintenance The following maintenance steps must be carried out: • Check filter and filter frame for soiling, corrosion and damage, renew as necessary. The final pressure differential of the bag filter varies and can be obtained from the relevant technical data (see filter type plate).
- Page 38 Commissioning and Maintenance Maintenance of grease filter In doing so, be sure to observe the safety information on page 24. ELECTRICAL HAZARD AND DANGER FROM ROTATING UNIT PARTS! In doing so, be sure to observe the safety information on page 24. To carry out the maintenance, proceed as follows: The filter cells are made of aluminium wire weave and each air filter cell is equipped with an integrated grease collecting tray.
- Page 39 Commissioning and Maintenance Maintenance of heater section (LPHW) ELECTRICAL HAZARD, DANGER FROM ROTATING UNIT PARTS AND SHARP EDGES! OBSERVE PERSONAL PROTECTION MEASURES. In doing so, be sure to observe the safety information on page 24 and page 25. The following maintenance steps must be carried out: •...
- Page 40 Commissioning and Maintenance The following maintenance steps must be carried out: • Check for tightness and for possible contamination on the air side. • If there is a risk of frost, also check the safety devices regularly, or take appropriate precautionary measures such as draining the equipment or adding antifreeze.
- Page 41 Commissioning and Maintenance Cooler section Commissioning of cooler with/without droplet eliminator ELECTRICAL HAZARD, DANGER FROM ROTATING UNIT PARTS AND SHARP EDGES! OBSERVE PERSONAL PROTECTION MEASURES. In doing so, be sure to observe the safety information on page 24 and page 25. The following commissioning steps must be carried out: •...
- Page 42 Commissioning and Maintenance Further measures before the cold season • Drain cooler coil before the start of winter if necessary. As the system pipes in this case have relatively small diameters, it must always be assumed that some water will remain in the unit following normal drainage.
- Page 43 Commissioning and Maintenance The following maintenance steps must be carried out: • Clean and check evaporator/condenser as described at „Maintenance of heater section (LPHW)“ on page 66. • Make sure that all refrigeration components in direct evaporators (refrigerating machine, direct evaporator, distribution manifold, refrigerant lines, etc.) are working efficiently. Direct evaporator Heat pipe Commissioning of heat pipe...
- Page 44 Commissioning and Maintenance Liquid-coupled heat exchanger Commissioning of liquid-coupled heat exchanger See „Commissioning of heater section (LPHW)“ on page 65. Maintenance of liquid-coupled heat exchanger See „Maintenance of heater section (LPHW)“ on page 66. Plate heat exchanger Commissioning of plate heat exchanger ELECTRICAL HAZARD AND DANGER FROM ROTATING UNIT PARTS! In doing so, be sure to observe the safety information on page 24.
- Page 45 Commissioning and Maintenance Routing of airflow in plate heat exchangers Cold corner 1 = heat adsorbing Condensate 2 = heat absorbing The condensate migrates to The condensate migrates to The condensate migrates to The condensate migrates to the cold zone due to gravity the cold zone due to gravity the warm zone due to gravity the warm zone due to gravity...
- Page 46 Commissioning and Maintenance Rotary heat exchanger Commissioning of rotary heat exchanger ELECTRICAL HAZARD, DANGER FROM ROTATING UNIT PARTS AND SHARP EDGES! OBSERVE PERSONAL PROTECTION MEASURES. In doing so, be sure to observe the safety information on page 24 and page 25. The following commissioning steps must be carried out: •...
- Page 47 Commissioning and Maintenance Dampers and shut-off dampers Commissioning of dampers and shut-off dampers ELECTRICAL HAZARD AND DANGER FROM ROTATING UNIT PARTS! OBSERVE PERSONAL PROTECTION MEASURES. In doing so, be sure to observe the safety information on page 24. The following commissioning steps must be carried out: •...
- Page 48 EVO-MODULAR AIR HANDLING UNITS AERA AIR CONDITIONING & VENTILATION TECH. Sales Office Varyap Meridian, Grand Tower A Blok No:89 Ataşehir İSTANBUL aera.com.tr +90 216 504 76 86 +90 216 504 76 90 Factory 3. Cadde No:13 Pancar OSB, Torbalı - İzmir...