3 Installation3.1 Installation Site Checklist3.1.1 Planning the Installation SiteSelect the best possible operation site by consideringthe following (see details on the following pages, and inthe Design Guide):• Ambient operating temperature• Installation method• Cooling• Position of the unit• Cable routing• Voltage and current supply from power source• Current rating within range• Fuse ratings if not using built-in fuses3.2 Equipment Pre-Installation Checklist• Before unpacking the adjustable frequency drive,examine the packaging for signs of damage. Ifthe unit is damaged, refuse delivery andimmediately contact the shipping company toclaim the damage.• Before unpacking the adjustable frequency drive,locate it as close as possible to the final instal-lation site• Compare the model number on the nameplate towhat was ordered to verify the proper equipment• Ensure each of the following are rated for thesame voltage:• Line power• Adjustable frequency drive• Motor• Ensure the output current rating is equal to orgreater than the motor full load current for peakmotor performance.• Motor size and adjustable frequencydrive power must match for properoverload protection.• If adjustable frequency drive rating isless than that of the motor, full motoroutput is impossible.3.3 Mechanical Installation3.3.1 Cooling and AirflowCoolingCooling can be obtained in different ways, by using thecooling ducts in the bottom and the top of the unit, bytaking air in and out the back of the unit or by combiningthe cooling possibilities.Back coolingThe backchannel air can also be ventilated in and out theback of a Rittal TS8 enclosure for frame size F18 LHD. Thisoffers a solution where the backchannel could take airfrom outside the facility and return the heat losses outsidethe facility thus reducing air-conditioning requirements.NOTICE!A door fan is required on the enclosure to remove theheat losses not contained in the backchannel of thedrive and any additional losses generated from othercomponents installed inside the enclosure. The totalrequired air flow must be calculated so that theappropriate fans can be selected. Some enclosuremanufacturers offer software for performing thecalculations (i.e., Rittal Therm software).Installation Instruction Manual16 Danfoss A/S © Rev. 2014-02-07 All rights reserved. MG37A22233