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Tamaño del archivo: 5.77 mb
Nombre del archivo: 48hc-11si.pdf
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Resumen del manual
Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open it. Lock- -- out and tag- -- out this switch, if necessary. 20 21 Two types of convenience outlets are offered on 48HC models: Non--unit powered and unit--powered. Both types provide a 125--volt GFCI (ground--fault circuit--interrupter) duplex receptacle rated at 15--A behind a hinged access cover, located on the corner panel of the unit. See Fig. 26. Convenience Outlet Electric Disconnect Switch Control Box Access Panel C10641 Fig. 26 -- Convenience Outlet Location Installing Weatherproof Cover: A weatherproof while-in-use cover for the factory-installed convenience outlets is now required by UL standards. This cover cannot be factory-mounted due to its depth; it must be installed at unit installation. For shipment, the convenience outlet is covered with a blank cover plate. The weatherproof cover kit is shipped in the unit’s control box. The kit includes the hinged cover, a backing plate and gasket. DISCONNECT ALL POWER TO UNIT AND CONVENIENCE OUTLET. LOCK--OUT AND TAG--OUT ALL POWER. Remove the blank cover plate at the convenience outlet; discard the blank cover. Loosen the two screws at the GFCI duplex outlet, until approximately 1/2-in (13 mm) under screw heads are exposed. Press the gasket over the screw heads. Slip the backing plate over the screw heads at the keyhole slots and align with the gasket; tighten the two screws until snug (do not over-tighten). Mount the weatherproof cover to the backing plate as shown in Fig. 27. Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover. Check for full closing and latching. RECEPTACLE NOT SHOWN COVER – WHILE-IN-USE WEATHERPROOF BASE PLATE FOR GFCI RECEPTACLE C09022 Fig. 27 -- Weatherproof Cover Installation Non--unit powered type: This type requires the field installation of a general--purpose 125--volt 15--A circuit powered from a source elsewhere in the building. Observe national and local codes when selecting wire size, fuse or breaker requirements and disconnect switch size and location. Route 125--v power supply conductors into the bottom of the utility box containing the duplex receptacle. Unit--powered type: A unit--mounted transformer is factory--installed to stepdown the main power supply voltage to the unit to 115--v at the duplex receptacle. This option also includes a manual switch with fuse, located in a control box and mounted on a bracket behind the convenience outlet; access is through the unit’s control box access panel. See Fig. 26. The primary leads to the convenience outlet transformer are not factory--connected. If local codes permit, the transformer primary leads can be connected at the line--side terminals on the unit--mounted non--fused disconnect switch; this will provide service power to the unit when the unit disconnect switch is open. See Fig. 28. C10730 UNIT VOLTAGE CONNECT AS PRIMARY CONNECTIONS TRANSFORMER TERMINALS 208, 230 240 L1: RED +YEL L2: BLU + GRA H1 + H3 H2 + H4 460 480 L1: RED Splice BLU + YEL L2: GRA H1 H2 + H3 H4 575 600 L1: RED L2: GRA H1 H2 Fig. 28 -- Powered Convenience Outlet Wiring 48HC 48H C 48HC 2.050HE501288 NOTICE/AVISConvenience Outlet Utilization Maximum Intermittent Use 15 - AmpsMaximum Continuous Use 8 - AmpsObserve a 50% limit on the circuit Loading above 8 - Amps Utilisation de la prise utilitaireUsage intermittent maximum 15 - AmpsUsage continu maximum 8 - AmpsObservez une limite de 50% sur le circuit Chargement au-dessus de 8 - Amps C10077 Fig. 29 - --Convenience Outlet Utilization Notice Test the GFCI receptacle by pressing the TEST button on the face of the receptacle to trip and open the receptacle. Check for proper grounding wires and power line phasing if the GFCI receptacle does not trip as required. Press the RESET button to clear the tripped condition. Using unit- --mounted convenience outlets: Units with unit- --mounded convenience outlet circuits will often require that two disconnects be opened to de- --energize all power to the unit. Treat all units as electrically energized until the convenience outlet power is also checked and de- --energization is confirmed. Observe National Electrical Code Article 210, Branch Circuits, for use of convenience outlets. Factory- --Option Thru- --Base Connections — All units are equipped with the ability to bring utilities through the base. Gas is brought up through an embossed area located in the gas section behind the gas entrance post. Access is gained through the gas access panel. A knock out must be removed to accomplish this. The electrical entrance is located in the control box area and can be accessed through the control box access panel. An embossed area is provided with three knock outs. High voltage is brought through the multi knock out by removing the appropriate size for the size of the fitting required. A 7/8- --in. knock out is provided for low voltage. An additional ...