Carrier Infinity 48XL Installation Instructions Manual

Also see for Infinity 48XL: Owner's information manual

Contents

Carrier Infinity 48XL Installation Instructions Manual Manual pdf 11 page image

INTEE_-_ NIPPLECAPC99020Fig. 10 - Sediment Trap7. Pressure test all gas piping in accordance with local andnational plumbing and gas codes before connecting pipingto unit.NOTE: Pressure test the gas supply system after the gas supplypiping is connected to the gas valve. The supply piping must bedisconnected from the gas valve during the testing of the pipingsystems when test pressure is in excess of 0.5 psig. Pressure test thegas supply piping system at pressures equal to or less than 0.5 psig.The unit heating section must be isolated from the gas pipingsystem by closing the external main manual shutoff valve andslightly opening the ground-joint union.FIRE OR EXPLOSION HAZARDFailure to follow this warning could result in fire, explosion,personal injury, death and/or property damage.• Connect gas pipe to unit using a backup wrench to avoiddamaging gas controls.• Never purge a gas line into a combustion chamber. Nevertest for gas leaks with an open flame. Use a commerciallyavailable soap solution made specifically for the detectionof leaks to check all connections.• Use proper length of pipe to avoid stress on gas controlmanifold.• If a flexible connector is required or allowed by authorityhaving jurisdiction, black iron pipe shall be installed atfurnace gas valve and extend a minimum of 2 in. (51 mm)outside furnace casing.• If codes allow a flexible connector, always use a newconnector. Do not use a connector which has previouslyserviced another gas appliance.8. Check for gas leaks at the field-installed andfactory-installed gas lines after all piping connections havebeen completed. Use a commercially available soap solutionmade specifically for the detection of leaks (or methodspecified by local codes and/or regulations).Install Electrical ConnectionsELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personaliniury or death.The unit cabinet must have an uninterrupted, unbrokenelectrical ground. This ground may consist of an electricalwire connected to the unit ground screw in the controlcompartment, or conduit approved for electrical groundwhen installed in accordance with NEC, NFPA 70 NationalFire Protection Association (latest edition) (in Canada,Canadian Electrical Code CSA C22.1) and local electricalcodes.HIGH-VOLTAGE CONNECTIONSThe unit must have a separate electrical service with afield-supplied, waterproof disconnect switch mounted at, or withinsight from, the unit. Refer to the unit rating plate, NEC and localcodes for maximum fuse/circuit breaker size and minimum circuitamps (ampacity) for wire sizing.The field-supplied disconnect may be mounted on the unit overthe high-voltage inlet hole (See Fig. 5 and 6).Operation of unit on improper line voltage constitutes abuse andmay cause unit damage that could affect warranty.UNIT COMPONENT DAMAGE HAZARDFailure to follow this caution may result in damage to theunit being installed.1. Make all electrical connections in accordance with NECNFPA 70 (latest edition) and local electrical codesgoverning such wiring. In Canada, all electricalconnections must be in accordance with CSA standardC22.1 Canadian Electrical Code Part 1 and applicablelocal codes. Refer to unit wiring diagram.2. Use only copper conductor for connections betweenfield-supplied electrical disconnect switch and unit. DONOT USE ALUMINUM WIRE.3. Be sure that high-voltage power to unit is withinoperating voltage range indicated on unit rating plate.4. Insulate low-voltage wires for highest voltage containedwithin conduit when low-voltage control wires are insame conduit as high-voltage wires.5. Do not damage internal components when drillingthrough any panel to mount electrical hardware, conduit,etc.11