Daikin DCC Series Installation Instructions Manual

Also see for DCC Series: Installation instructions Service instructions Installation instructions Installation instructions Installation instructions

Contents

Daikin DCC Series Installation Instructions Manual Manual pdf 9 page image

9LOW VOLTAGE ENTRANCEDIMPLES MARK DRILL LOCATIONSHIGH VOLTAGE ENTRANCE10 3/16”26 ½”ELECTRICAL ENTRANCE LOCATIONSUnit is equipped with Single Point Power Block and Low VoltageBlock.L OW V OLTAGE C ONTROL W IRING1. A 24V thermostat must be installed for unit operation. Itmay be purchased with the unit or field -supplied.Thermostats may be programmable or electromechanicalas required.2. Locate thermostat or remote sensor in the conditionedspace where it will sense average temperature. Do notlocate the device where it may be directly exposed tosupply air, sunlight or other sources of heat. Followinstallation instructions packaged with the thermostat.3. Use #18 AWG wire for 24V control wiring runs notexceeding 75 feet. Use #16 AWG wire for 24V control wiringruns not exceeding 125 feet. Use #14 AWG wire for 24Vcontrol wiring runs not exceeding 200 feet. Low voltagewiring may be National Electrical Code (NEC) Class 2 wherepermitted by local codes.4. Route thermostat wires from sub-base terminals to theunit. Control wiring should enter through the duct panel(dimple marks entrance location). Connect thermostat andany accessory wiring to low voltage terminal block TB1 inthe main control box.NOTE: Field-supplied conduit may need to be installed dependingon unit/curb configuration. Use #18 AWG solid conductor wirewhenever connecting thermostat wires to terminals on sub-base.DO NOT use larger than #18 AWG wire. A transition to #18 AWGwire may be required before entering thermostat sub-base.NOTE: Refer to unit wiring diagrams for thermostat hookups.CIRCULATING AIR AND FILTERSD UCTWORKThe supply duct from the unit through a wall may be installed with-out clearance. However, minimum unit clearances must be main-tained (see “Clearances” section). The supply duct should be pro-vided with an access panel large enough to inspect the air cham-ber downstream of the heat exchanger. A cover should be tightlyattached to prevent air leaks.Ductwork dimensions are shown in the roof curb installationmanual.If desired, supply and return duct connections to the unit may bemade with flexible connections to reduce possible unit operatingsound transmission.CONDENSATE DRAIN CONNECTIONCONDENSATE D RAIN C ONNECTIONA 3/4” female NPT drain connection is supplied on the end of theunit and bottom of the drain pan for condensate piping. An exter-nal trap must be installed for proper condensate drainage.DRAINCONNECTIONUNIT 2" MINIMUMFLEXIBLETUBING-HOSEOR PIPE3" MINIMUMA POSITIVE LIQUIDSEAL IS REQUIREDDrain ConnectionInstall condensate drain trap as shown. Use 3/4” drain line andfittings or larger. Do not operate without trap.H ORIZONTAL D RAINDrainage of condensate directly onto the roof may be acceptable;refer to local code. It is recommended that a small drip pad of ei-ther stone, mortar, wood or metal be provided to prevent any pos-sible damage to the roof.CLEANINGDue to the fact that drain pans in any air conditioning unitwill have some moisture in them, algae and fungus willgrow due to airborne bacteria and spores. Periodic clean-ing is necessary to prevent this build-up from plugging thedrain.