42CT Fan Coil Units Installation Operation Maintenance Manual
Code No: B.5.1.
Table of Contents General Information ............................................................................ 4 Unit Dimensions and Water Coil Connections ................................. 5 Installation, Commisisoning, Operation, Maintenance Safety Considerations..................................................................................... 8 Operating Limits....................................................................................10 Handling & Installation & Commissioning ............
1. GENERAL INFORMATION The fan coil units covered in this manual are suitable for indoor installation and ductable for horizontal concealed ceiling application. 1.1. Casing Along with the air plenum box with filter options. Rear return air plenum and bottom return air plenum options fabricated with a galvanised steel. 1.2. Coil Blue hydrophilic aluminium fan coil, with copper tube and aluminium fan.
2. UNIT DIMENSIONS AND WATER COIL CONNECTIONS Notes: • The piping connections drain pan outlet and control box can be located on the right hand side or left hand side facing the airflow in the field when needed. • Unit should be installed for horizontal discharge only. • All Dimensions are in mm.
Standard 2 pipe unit with rear plenum Standard 4 pipe unit with rear plenum * For the unit size 14, dimension is 54 mm ** For the unit size 14, dimension is 118,5 mm
Standard 2 pipe unit with bottom plenum Standard 4 pipe unit with bottom plenum * For the unit size 14, dimension is 54 mm ** For the unit size 14, dimension is 118,5 mm
3. INSTALLATION, COMMISSIONING, OPERATION, MAINTENANCE SAFETY CONSIDERATIONS It is essential that installation, operation and maintenance must be carried out by a qualified, trained and experienced technicians. For safety reasons, technicians are required to read this manuel carefully.
In order to avoid electric shock, fire or injury, stop the unit and disconnect the safety switch in case of abnormal events (such as smell of burning) and call Alarko Carrier Service for further instructions. Do not place containers filled with liquids or other objects onto the unit. Motor and fan must be disconnected to all power prior to opening access panels and servicing any maintenance operations or prior to handling any internal parts of the unit.
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5. HANDLING & INSTALLATION & COMMISSIONING • 42CT fan coil units are shipped individually packed in carton boxes. The units should never be stored and installed where they may be subjected to extreme conditions such as rain, snow, or extreme temperatures, direct sun, too close to heat sources , on humid positions with water hazard, e.g. laundry premises, full of dust, high frequency waves .The unit is for indoor installation.
5.2. Installation Drill four holes for the screw anchors close to the four side hooks. Hook the unit on the screw anchors in the ceiling with 10 screw. Adjust the screws to make certain the fan coil is horizontally leveled. Make certain there is enough space for maintenance and repair when installing the unit. (see below drawing) any rise in the condensate drain piping. Avoid slack on electrical connections. Avoid disconnecting water connections after installation.
5.3. Condensate drain Coil surface condensation formed during the cooling cycle is collected in a pan purposely placed under the coil and then drained out through a drain pipe fitted on the coil connection side. A simple flexibil tube which fits 19 mm is recommended. To facilitate correct condensate draining, make sure that the drain pipe is not bent or restricted and that it has the required slope (at least 2%) along its length. 5.4.
5.6. Electrical connections All field wiring and components must be installed by a licensed electrician and must comply with relevant local and national regulations. Check that the power supply corresponds to the nominal power supply stated on the unit nameplate. To avoid inter-disturbing within motors, do not connect two or more units into one control switch. For the unit power supply, it is recommended to use cables with a minimum size of 1.5 mm .
6. ELECTRICAL DATA Fan operation 230V/1ph/50Hz and values are given for units with standard filter.
42CT 2 Pipe 3 Rows Models 42CT 2 Pipe 4 Rows Models 42CT 4 Pipe 3+1 Rows Models
42CT 2 Pipe 3 Rows Models 42CT 2 Pipe 4 Rows Models 42CT 4 Pipe 3+1 Rows Models
7. COMMISSIONING The following procedures are designed as a guide to enable the units to be commissioned in accordance with the design requirements. Ensure that the unit is installed correctly and undamaged. Ensure that all unit sections are thoroughly clean and free from installation debris, that the filter is clean and free from dust. Ensure that all access panels and blanking plates are in position and secure.
7.3. Motor Fan Assembly Disconnect the power supply to the unit before carrying out any work on the unit. Remove the filter. Remove the fan access panel. Disconnect the fan assembly power supply cables (power and control wiring for variable-speed motor). The fan assembly and its panel are held in place by four screws. Remove these screws and slide the assembly down. Remove the fan motor assembly. Note: Be careful not to damage the fan impellers during the removal process to avoid unbalancing the fans.
7.4. Motor The motor is permanently lubricated, therefore no periodical maintenance is required. 7.5. Heat exchanger coil Isolate the electrical supply. Isolate flow and return pipework to both heating and cooling connections. Drain down coils. The coil should be inspected, at the same time as cleaning the filter, to ascertain if any solids or foreign matter has accumulated between the fins and that the coil connections are free from leaks.
7.7. Air Filter Take off the filter from the bottom or rear under the front panel or bottom. Unit with rear plenum Unit with bottom plenum Clean standart nylon filters with vacuum cleaner or water and soap solution. Rinse and allow them to dry before re-installation. Optional filters can be vacuum cleaned. Replace it every 6 months, shorten the period if necessary.
Order No: X0001, 09.2021 - Supersedes order No.: New The manufacturer reserves the right to make changes to the product specifications without notice.
