39 HQ Airovision Air Handling Units Installation, operation and maintenance instructions
CONTENTS 1 - SAFETY CONSIDERATIONS ...............................................................................................................4 1.1 1.2 1.3 1.4 - 2 - TRANSPORT AND LIFTING INSTRUCTIONS ..................................................................................5 2.1 2.2 2.3 2.4 2.5 - 3 - CHECKLIST OF START-UP CHECK POINTS....................................................................................7 3.1 - Checklist of start-up check points .........................
CONTENTS (continued) 6 - MAINTENANCE AND OPERATING INSTRUCTIONS....................................................................16 6.1 6.2 - General ...................................................................……………………………………………………………………16 - Casing panels .........................................................…………………………………………………………………….16 6.2.1 - Inside installation ....................................................……………………………………………………………16 6.2.2 - Outside installation .......................
1 - SAFETY CONSIDERATIONS 1.1 - General The 39HQ air handling units (AHUs) has been designed and manufactured in accordance with the CE machine directive EN292. In order to guarantee safe operation and use of the unit, please carefully read and observe the instructions in this document and pay special attention to the warnings that apply to this unit.
Electrical voltage This pictogram indicates that there are electrical components behind this access cover, door or panel that may be dangerous for the user/installer. Only personnel qualified in accordance with NEN 3140 is permitted to carry out work on these components. The pictogram is attached to the access cover for the electric heater control box. Lifting and transport An instruction is attached to the AHU that describes the procedures that must be followed for lifting and transport.
2.3 - Roof edge protection during transport (outside installation) For offloading as well as hoisting lifting cables can be attached to the lifting bars. Evenly positioned spacer bars should be used between the lifting cables to prevent damage to the top of the unit and ensure that no excess pressure is applied to the side panels. For hoisting please ensure that the weight is evenly distributed.
3 - CHECKLIST OF START-UP CHECK POINTS 3.1 - Checklist of start-up check points The table below shows a general overview of the planning required to facilitate the installation of the AHU. The following pages give a more detailed description of the individual components. ! Caution ! Before starting up the AHU ensure that the components have the correct connection voltage and connect them in accordance with the regulations. The doors and access covers must be closed and the AHU must be earthed.
Electrical steam humidification Water humdifiers Fan COMPONENTS CHECK POINTS Connections and fittings Leakage Actuator/valve Check connection and operation Connections and fittings Leakage/operation Electrical components Check connection voltage Check connection and operation See documentation supplied See documentation supplied See documentation supplied Remove Spray humidifier Infrasonic humidifier Wet cell Transport protection brackets Fan housing and fan compartment Motor Drive belts Flexi
4 - START-UP INSTRUCTIONS 4.1.5 - AHU installation and connection 4.1 - Casing The floor in the room where the AHU is installed must be level and flat to prevent connection problems. Before the units are placed against or on top of each other, the sealing tape supplied must be attached between the casing sections. The label with the unit data, such as order number, position number etc. is ususally located on the acccess cover or door of the fan compartment. 4.1.
4.2 - Dampers - Check if the actuator motor is installed in accordance with the supplier’s instructions. - Check if the correct angle has been set. - Check if the dampers close properly. - Check if the damper can open to the required angle. - Check operation after the power has been restored following a power cut. Some dampers must be open, others must be closed. Manual operation - Ensure that the heater can supply heat to prevent frost formation when the fan is started.
4.5 - Coolers - Check the connections in accordance with the dimensional drawing. - Control the connections for leaks. - Check drain trap. If CHH standard siphon trap is used, check it has been correctly installed. Check if siphon cover and ball have been correctly installed. - Check if fins have been bent during transport. Correctly straighten the fins. - Check if the siphon has been correctly installed. Check if siphon cover and ball have been correctly installed. 4.
- Connect the humidifier in accordance with the instructions of the supplier. - The following warning pictogram is attached to the panel: hot surface. - Check the direction of rotation of the impeller. The direction is indicated on the casing by an arrow. - Separately measure the current draw of the electric motor for all phases. The current draw of all phases must be approximately the same and agree with the data on the name plate. Set the motor protection device to the nominal value.
5 - MAINTENANCE CHECKLIST 5.1 - Checklist for check points and maintenance intervals The checklist contains a general overview of the planning that facilitates the inspections and maintenance of the AHU. On the following pages there is a more detailed description of the individual components. ! Warning ! Remember to deenergise all components and to ensure that the fan has stopped rotating, before the doors and access covers are opened before inspections and maintenance take place.
Plate heat exchanger Direct steam humidification Electric steam humidification Spray humidifier Infrasonic humidifier Fan 14 Contamination, operation Contamination Operation Wear/voltage Electrical components Operation Fins Damper (if used) Contamination Sealing Bearings Servo Condensate pan Droplet eliminator Contamination Connections and fittings Leakage/operation Servo Operation Connections and fittings Leakage/operation Electrical components Operation Boiler Scaling on electrodes P
6 - MAINTENANCE AND OPERATING INSTRUCTIONS 6.6 - Dampers 6.1 - General All damper hinges are equipped with plastic bearing bushings, so that no lubrication is required. Remove excess contamination by cleaning it with compressed air. Clean aluminium parts with water and a mild household soap solution. Check adjusting bolts and linkage and if necessary tighten. Ensure that the damper blades run free of the casing and do not touch the flexible connection. The AHU(s) require little maintenance.
6.9.2 - Electric heaters 6.12 - Plate heat exchanger Check once a year for contamination, and if necessary clean with compressed air. Check the connections in the control box. Check the operation of the thermostat. Check the plate heat exchanger once a year for contamination and if necessary clean with compressed air against the direction of the air flow. If dampers are used, follow the instructions in section 6.6.
6.13.3 - Infrasonic humidifier - First carefully read the instructions from the supplier. The following points require extra attention. - Check the connections of the high-pressure pipes. - Ensure that the pipes do not rub against anything. - Check if the spray banks work well. - Check the operation of the pressostats and the pressure. - Check the water quality. - Check the contamination of the rinse filter. - Check the operating pressure weekly. Higher pressure indicates an increase in contamination. 6.
Carrier is participating in the Eurovent Certification Programme. Products are as listed in the Eurovent Directory of Certified Products. Carrier Holland Heating United Technologies House Guildford Road Leatherhead Surrey KT22 9UT United Kingdom Tel.: + 44 (0) 1372 220 230 Fax: + 44 (0) 1372 220 231 www.carrierhollandheating.com Manufactured by: Carrier Holland Heating, Waalwijk,Netherlands Manufacturer reserves the right to change any product specifications without notice.
