Daikin IM 986-2 VHC Installation & Maintenance Manual

Contents

IM 986-2 / Page 11 of 48Pre-Installation Considerations1 To prevent damage to equipment, do not operatesupplementary heating and cooling during theconstruction period2. Inspect the carton for any specific tagging numbersindicated by the factory per a request from theinstalling contractor At this time the voltage, phaseand capacity should be checked against the plans3 Check the unit size against the plans to verify thatthe unit is being installed in the correct location4 Before installation, check the available dimensionsof the area where the unit is to be installed versusthe dimensions of the unit5 Note the location and routing of water piping,condensate drain piping, and electrical wiringThe locations of these items are clearly marked onsubmittal drawings6. The installing contractor will find it beneficialto confer with piping, sheet metal, and electricalforemen before installing any unitNote: Check the unit data plate for correct voltagewith the plans before installing the equipment.For Optimum Unit Performance and toHelp Minimize Noise and Vibration● Adhere to the "Critical Dimensions" for locations offraming and distances to the cabinet● Install a 1/4" thick vibration isolation pad under theentire footprint of the unit cabinet base● Be sure there are no kinks and that the stainlesssteel braided hoses do not come in contact with andvibrate on chassis and cause noise● Ensure there is no metal-to-metal contact betweenreturn air grille and cabinet and the dischargediffuser and the cabinet, use provided gaskets● Air balancing in ducted applications is critical forproper airflow at each diffuser.Figure 11: Typical Side by Side Unit InstallationWARNINGMake sure all electrical ground connections are made inaccordance with local code.The contractor shall cover the units to protect the machinesduring finishing of the building. This is critical while sprayingfireproofing material on bar joists, sandblasting, spray paintingand plastering.WARNINGNOTICETop air discharge units will require turning vanes and/or avolume damper for proper air flow and balancing, to mini-mize turbulence. These components must be field-installedand furnished in accordance with SMACNA guidelines.