708619-0 S3BN AC Commercial II.indd - Nordyne

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the job site. Ensure coil fins are straight and, ifnecessary, comb fins to remove flattened andbent fins.Preferred Location of the Outdoor Unit atJob Site — Conduct a survey of the job site todetermine the optimum location for mounting theoutdoor unit. Overhead obstructions, poorly ventilatedareas, and areas subject to accumulationof debris should be avoided. The outdoor unitshould be installed no closer than 18 inches fromthe outside walls of the facility and in an area freefrom overhead obstructions to ensure unrestrictedairflow through the outdoor unit.Facility Prerequisites — Electrical power mustbe supplied to the equipment. Electrical powersupplied must be adequate for proper operationof the equipment. The system must be wired andprovided with circuit protection in accordance withlocal building codes and the National ElectricalCode.Minimum Circuit Ampacity — Electrical wiringto the equipment must be compatible and incompliance with the minimum circuit ampacitylisted on the outdoor unit data label.Maximum Fuse/Circuit Breaker Size — Circuitprotection for the outdoor unit must be compatiblewith the maximum fuse/circuit breaker size listedon the outdoor unit data label.4. INSTALLING THE OUTDOORUNITSlab Mount — The site selected for a slab mountinstallation requires a stable foundation and onenot subject to erosion. The slab should be leveland anchored (if necessary) prior to placing theequipment on the slab.Cantilever Mount — The cantilever mountshould be designed with adequate safety factorto support the weight of the equipment, and forloads subjected to the mount during operation.Installed equipment should be adequately securedto the cantilever mount and levelled priorto operation of the equipment.Roof Mount — The method of mounting shouldbe designed so as not to overload roof structuresnor transmit noise to the interior of the structure.Refrigerant and electrical line should be routedthrough suitably waterproofed openings to preventwater leaking into the structure.WARNING:To avoid the risk of property damageor personal injury, it is the rigger’sresponsibility to ensure thatwhatever means are used to hoistthe unit are safe and adequate.5. INSTALLING THE INDOOR UNITThe indoor section should be installed beforeproceeding with routing of refrigerant piping.Consult the installation instructions of the indoorunit (i.e.: air handler, furnace, etc.) for detailsregarding installation.6. CONNECTING REFRIGERANTTUBING BETWEEN THEINDOOR AND OUTDOOR UNITGeneral — Once outdoor and indoor unit placementhas been determined, route refrigeranttubing between the equipment in accordance withsound installation practices. Refrigerant tubingshould be routed in a manner that minimizes thelength of tubing and the number of bends in thetubing. Refrigerant tubing should be supported ina manner that the tubing will not vibrate or abradeduring system operation. Tubing should be keptclean of foreign debris during installation. Everyeffort should be made by the installer to ensurethat the fi eld installed refrigerant containingcomponents of the system have been installedin accordance with these instructions and soundinstallation practices so as to insure reliablesystem operation and longevity. The maximumrecommended interconnecting refrigerant linelength is 75 feet, and the vertical elevation differencebetween the indoor and outdoor sectionsshould not exceed 20 feet.Optional Equipment — Optional equipment(e.g.: liquid line solenoid valves, twinning kit,low ambient,etc.) should be installed in strictaccordance with the manufacturer’s installationinstructions.4
7. MAKING ELECTRICALCONNECTIONSWARNING:Turn off all electrical power at themain circuit box before wiringelectrical power to the outdoorunit. Failure to comply may causesevere personnel injury or death.Wiring Diagram/Schematic — A wiring diagram/schematicis located on the inside coverof the electrical box of the outdoor unit. Theinstaller should become familiar with the wiringdiagram/schematic before making any electricalconnections to the outdoor unit.Outdoor Unit Connections — The outdoorunit requires both power and control circuitelectrical connections. Refer to the unit wiringdiagram/schematic for identification and locationof outdoor unit field wiring interfaces.Supply Control Circuit Wiring — The outdoorunit is equipped with a 24 V<strong>AC</strong> Class ll transformerfor low voltage circuit control. Control circuit wiringmust comply with the current provisions of the“National Electrical Code” (ANSI C1.) and withapplicable local codes having jurisdiction. Whenusing two air handlers, a twinning kit (917453) isrequired for proper low voltage control wiring.Units are shipped factory wired for 240 or 460 voltoperation (see unit data label for proper incomingfi eld wiring). For 208 volt operation, removethe lead from the transformer terminal marked240V (on 208-230 models only) and connect it tothe terminal marked 208V. For maximum circuitampacity and maximum overcurrent protection,see the unit rating plate.Thermostat Connections — Thermostat connectionsshould be made in accordance with theinstructions supplied with the thermostat, andwith the instructions supplied with the indoorequipment.WARNING:To avoid the risk of electricalshock, personal injury, or death,disconnect all electrical powerto the unit before performing anymaintenance or service.WARNING:The unit cabinet must have anuninterrupted or unbroken electricalground to minimize personalinjury if an electrical fault shouldoccur. This ground may consist ofelectrical wire or approved conduitwhen installed in accordance withexisting national or local codes.Electrical Power Wiring:General — Electrical power wiring must bemade in accordance with all applicable localcodes and ordinances, and with the currentrevision of the National Electric Code NFPA 70or in Canada CSA C.22.1 Canadian ElectricalCode Part 1. If any of the original wire as suppliedwith the unit must be replaced, it must bereplaced with material of the same gauge andtemperature rating.Line Voltage — Before proceeding with the electricalconnections, make certain that the voltage,frequency and phase of the supply source arethe same as those specifi ed on the unit ratingplate. Also verify that the service provided by theutility is suffi cient to handle the additional loadimposed by this equipment.This unit must be electrically grounded in accordancewith local codes or, in the absence oflocal codes, with the National Electrical Code(ANSI/NFPA 70) or the CSA C22.1 ElectricalCode.See the unit wiring label for proper high and lowvoltage wiring. Make all electrical connectionsin accordance with all applicable codes andordinances.5
Page 1 and 2: Outdoor Air ConditionerUser’s Inf
Page 3: CAUTION:Do not over-oil, or oil mot
Page 7 and 8: After allowing the unit to run for
Page 9 and 10: Refrigerant Charging Charts40037535
Page 11 and 12: PHYSICAL AND ELECTRICAL SPECIFICATI

708619-0 S3BN AC Commercial II.indd - Nordyne

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