York SUNLINE MagnaDRY DR180 Installation Manual

Also see for SUNLINE MagnaDRY DR 180: Submittal data sheet Installation manual

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York SUNLINE MagnaDRY DR180 Installation Manual Manual pdf 22 page image

127915-YIM-A-040522 Unitary Products GroupTHERMOSTATThe room thermostat should be located on an insidewall approximately 56 inches above the floor where itwill not be subject to drafts, sun exposure or heat fromelectrical fixtures or appliances. Follow the manufac-turer's instructions enclosed with the thermostat forgeneral installation procedure. A minimum of sevencolor-coded insulated wires (#18 AWG) should be usedto connect the thermostat to the unit.POWER AND CONTROL WIRINGField wiring to the unit must conform to provisions ofthe National Electrical Code, ANSI / NFPA No. 70 (inU.S.A.), current Canadian Electrical Code C22.1 (inCanada) and/or local ordinances. The unit must beelectrically grounded in accordance with NEC and CEC(as specified above) and/or local codes. Voltage toler-ances, which must be maintained at the compressorterminals, during starting and running conditions, areindicated on the unit Rating Plate and the Unit Applica-tion Data table.The internal wiring harness furnished with this unit isan integral part of a CSA design certified unit. Fieldalteration to comply with electrical codes should not berequired.A fused disconnect switch should be field provided forthe unit. The switch must be separate from all other cir-cuits. Wire entry at knockout openings require conduitfittings to comply with NEC (in U.S.A.), CEC (in Can-ada) and/or local codes. If any of the wire supplied withthe unit must be replaced, replacement wire must be ofthe type shown on the wiring diagram and the sameminimum gauge as the replaced wire.Use copper conductors properly sized to carry the load.Each unit must be wired with a separate branch circuitfed directly from the meter panel and properly fused.Refer to the Typical Field Wiring Figure 5 and to theappropriate unit wiring diagram for control circuit andpower wiring information.OPTIONAL ELECTRIC HEATThe factory-installed heaters are wired for single pointpower supply. Power supply need only be brought intothe single point terminal block and thermostat wiring tothe low voltage terminal strip located in the upper por-tion of the unit control box.These CSA approved heaters are located within thecentral compartment of the unit with the heater ele-ments extending into the supply air chamber. Refer toFigure 13 for access panel location.Fuses are supplied, where required, by the factory.Some KW sizes require fuses and others do not. Referto Table 3 for minimum CFM limitations and to Tables 8and 9 for electrical data.OPTIONAL GAS HEATThese gas-fired heaters have aluminized-steel oroptional stainless steel, tubular heat exchangers withspark ignition with proven pilot.All gas heaters are shipped from the factory equippedfor natural gas use, but can be field converted to L.P./Propane with Kit Model # 1NP0418. See Gas HeatApplication Data Table.When connecting electrical power and controlwiring to the unit, waterproof type connectorsMUST BE USED so that water or moisturecannot be drawn into the unit during normaloperation. The above waterproofing conditionswill also apply when installing a field-supplieddisconnect switch.TABLE 2: CONTROL WIRE SIZESWire Size Maximum Length 11. From the unit to the thermostat and back to the unit.18 AWG 150 FeetTABLE 3: ELECTRIC HEAT APPLICATION DATANOMINALHEATERSIZE (KW)VOLTAGE3-PHASE,60 HZMINIMUM CFM UNIT SIZE15 TON 20 TON 25 TON18 208/230,460,575 45006000 750036 208/230,460,575 450054208/230 5000460,575 450072208/230 5000460,575 4500