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M A I N T E N A N C E I N S T R U C T I O N S Ductable Comfort Units 42NH - CLZ Heating capacity: 1 to 12 kW Cooling capacity: 0,6 to 9 kW...
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The illustrations in this document are for illustrative purposes only and not part of any offer for sale or contract. The manufacturer reserves the right to change the design at any time without notice.
1 - UNPACKING, CHECKING AND STORING THE UNIT Thank you for purchasing a CARRIER unit. We trust that this unit will give you complete satisfaction. To ensure correct operation, all connections (electrical, hydraulic, etc.) must be made in accordance with best industry practice and the regulations in force in the country of installation.
3 - DESCRIPTION OF THE UNIT (FIG. 1) a - Fan motor assembly access panel and filter - Electrics box b - Filter runner for assembly with return sleeve or - Condensate drain pan plenum k - Condensate drain pump c - Spigots - Condensate drainage d - Header couplings...
3 - DESCRIPTION OF THE UNIT (FIG. 1) 3.2 - Models The 42NH is available in 4 standard models: Base unit only : Metal sleeve on the discharge (optional) and optional metal sleeve on the intake Base unit + supply plenum : Supply plenum with collars for round ducts + metal sleeve optional on intake Base unit + supply plenums + linear return : Return and supply plenum with collars for round ducts U : Return and supply plenum with lateral collar for round ducts.
(fig. 3, b). Note: CARRIER strongly recommends the use of anti-vibration resilient mounts when securing the unit, in order to reduce the transmission of vibrations through the building structure during operation.
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For control valves equipped with electrothermal motors, the temperature of the air surrounding the thermo-actuators should not exceed 50°C. This is especially important for units installed in confined spaces (e.g. in suspended ceilings). CARRIER shall not be liable for damage to valves caused by faulty design of the hydraulic supply network or incorrect commissioning.
4 - INSTALLATION AND CONNECTIONS 4.4 - Condensate pump draining connection Use a flexible and/or rigid drain pipe for a minimum slope of 1 cm/m, with a constant gradient along its whole length and no low points. Install a siphon measuring at least 5 cm to prevent any discharge of unpleasant gases or odours. 4.5 - Connecting the condensate drain pump (option) As an option, the condensate drain pump can be supplied connected but not mounted on the unit Its technical specifications are as follows:...
4 - INSTALLATION AND CONNECTIONS 4.6 - Electrical connections ■ Disconnect the electrical supply to the unit before carrying out any work and wait at least 20 mins before working on or near the heating elements. Beware of the risk of burns. Only personnel qualified to work on electrical connections may carry out installation and maintenance work.
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4 - INSTALLATION AND CONNECTIONS An earth connection is compulsory. CARRIER shall not be liable for incidents resulting from faulty or non-existent earthing. Always follow the wiring diagram delivered with unit. To access the electrical terminal block: Disconnect the unit from the electrical power supply Use a Phillips screwdriver or a size 7 Allen key to undo the 2 screws securing the electrics box cover (Fig.
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4 - INSTALLATION AND CONNECTIONS Important: The unit's compliance with the above standards does not guarantee the compliance of the installation as a whole (several other factors not relating to the unit may be involved). As a result, the installer must observe the applicable recommendations in order to guarantee compliance. General safety instructions for units with electric elements: Connecting 42NH to an air flow circuit alters its performance.
42NH is equipped with a G3 filter (optional). We recommend replacing it annually. CARRIER recommends regular inspections of the filter's appearance in order to define the frequency with which it should be replaced, which varies depending on the premises and the operating conditions.
5 - SERVICING AND MAINTENANCE 5.3 - Fan motor assembly Periodically check the cleanliness of the impeller and the motor. If necessary, clean them using a vacuum cleaner, taking care not to damage them. The electric motor's bearings are lubricated for life and do not require specific maintenance. ■...
2009/125/EC (Eco Design) et règlement 327/2011/UE The Ecodesign for Energy-Related Products and Energy REGULATION (EC) No 1907/2006 (REACH) Information Regulations 2019, and following amendments UK REACH Regulations 2019 Importateur pour le Royaume-Uni : Toshiba Carrier UK Ltd, Porsham Close, Roborough, Plymouth, PL6 7DB...
All our units are tested and proven before leaving the factory. They are guaranteed against all manufacturing defects. CARRIER shall not be held liable for any type of corrosion. CARRIER's warranty does not cover damage resulting from incorrect electrical wiring, inadequate electrical or thermal protection or failure to use a filter.
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Order No.: EN7606669-00, 02.2022. Supersedes order No.: New. Manufactured by: Carrier SCS, Rte de Thil, 01122 Montluel, France. Manufacturer reserves the right to change any product specifications without notice. Printed in the European Union.
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