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INSTALLATION INSTRUCTIONS(-)BHPAIR HANDLERS MODELS FEATURING EARTH-FRIENDLY R-410A REFRIGERANT MODELS FEATURING ELECTRIC HEAT WITHOUT INDOORCOOLING COIL!sWARNINGWARNINGThese instructions are intended as an aid to qualified licensedservice personnel for proper installation, adjustment andoperation of this unit. Read these instructions thoroughly beforeattempting installation or operation. Failure to follow theseinstructions may result in improper installation, adjustment,service or maintenance possibly resulting in fire, electricalshock, property damage, personal injury or death.ISO 9001:200892-20521-44-08SUPERSEDES 92-20521-44-07
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TABLE OF CONTENTS (continued)!4"#! %::' -. ' *;* ( """"""""""""""""""""""""""""""*0#*;# ! (&01G*.0:4![:(()!] #########################!DR!;#"! a1&'4)!] ##########################################!DR!;#D! [.,?4)!T -4! .)31.*!])4 4)! ############!DR!;#H! A4': ! 2B '() *()! (.:!X().Y(,* :!I) .,!@ ###!DR!;#;! /1Z.:. )5!X().Y(,* :!NB4)-:(W!@ ########!DR! "#! /% C# ! #######!DR!C#"! %,7(()! (.:c!I) .,!@ ,c!I) ###############!D !C#D! ]:(W4)!E(*()!6!J ##########################!D !C#H! E(*()!\10).3 ####################################!D !C#L! ]:(W4)!/GG4&0:5!A4&(B :!6!A4': D !C#;! E(*()!A4': ###################################!D"!C#C! ]:(W4)!J 44:!A4': ######################!D"!C#K! 2:43*).3!X4 *4)!2:4&4,*!A4': #######!DD!C#P! A4': 34&4,*!@ ##################################!DD! "#! ? %2,- ( : """""""""""""""""""""""""""""""""""""""""*05*@"#!A . ,2*? %2.%/ """"""""""""""""""""""""""""""""*09*P# ! LV! !F(!X4 #####################################!DL!P#"! "RKM"HRV! !; ###################################!D;!P#D! "RKM"HRV! !C ###################################!DC!P#H! "RKM"HRV! ! J!X4 #######################!DK!P#L! "RKM"HRV! ! K J!X4 #######################!DP!1.0 SAFETY INFORMATION! WARNINGDuct leaks can create an unbalanced system and draw pollutants such as dirt,dust, fumes and odors into the home causing property damage. Fumes andodors from toxic, volatile or flammable chemicals, as well as automobileexhaust and carbon monoxide (CO), can be drawn into the living spacethrough leaking ducts and unbalanced duct systems causing personal injuryor death (see Figure 1). If air-moving equipment or ductwork is located in garages or off-garage storage areas - all joints, seams, and openings in the equipment and duct mustbe sealed to limit the migration of toxic fumes and odors including carbonmonoxide from migrating into the living space. If air-moving equipment or ductwork is located in spaces containing fuelburning appliances such as water heaters or boilers – all joints, seams, andopenings in the equipment and duct must also be sealed to prevent depressurization of the space and possible migration of combustion byproductsincluding carbon monoxide into the living space.! WARNINGThese instructions are intended as an aid to qualified, licensed service personnel for proper installation, adjustment and operation of this unit. Readthese instructions thoroughly before attempting installation or operation.Failure to follow these instructions may result in improper installation, adjustment, service or maintenance possibly resulting in fire, electrical shock, property damage, personal injury or death.! WARNING (SEE SECTION 3.2.2: VERTICAL DOWNFLOW)The RXHB-17, RXHB-21 or RXHB-24 combustible floor base is required whensome units with electric heat are applied downflow on combustible flooring.Failure to use the base can cause a fire resulting in property damage, personalinjury or death. See CLEARANCES (Section 3.4) for units requiring a combustiblefloor base. See the accessory section in this manual for combustible floorbase RXHB.! WARNING (SEE SECTION 3.10.2: GROUNDING)!The unit must be permanently grounded. Failure to do so can result in electrical shock causing personal injury or death.3
! WARNING(SEE SECTION 4.0:ELECTRICAL WIRING)Disconnect all power to unit beforeinstalling or servicing. More thanone disconnect switch may berequired to de-energize the equipment. Hazardous voltage can causesevere personal injury or death.! WARNING(SEE SECTION 12.5: BLOWERASSEMBLY REMOVAL &REPLACEMENT)If removal of the blower assembly isrequired, all disconnect switchessupplying power to the equipmentmust be de-energized and locked (ifnot in sight of unit) so the fieldpower wires can be safely removedfrom the blower assembly. Failure todo so can cause electrical shockresulting in personal injury or death.! WARNINGBecause of possible damage toequipment or personal injury,installation, service, and maintenance should be performed by atrained, qualified service personnel.Consumer service is recommendedonly for filter cleaning/replacement.Never operate the unit with theaccess panels removed.! WARNING (SEE SECTION 7.0: MAINTENANCE)Units with circuit breaker(s) meet requirements as a service disconnectswitch, however, if access is required to the line side (covered) of the circuitbreaker, this side of the breaker(s) will be energized with the breaker(s) deenergized. Contact with the line side can cause electrical shock resulting inpersonal injury or death.! WARNING (SEE SECTION 3.5: DUCTWORK)Do not, under any circumstances, connect return ductwork to any other heat producing device such as fireplace insert, stove, etc. Unauthorized use of suchdevices may result in fire, carbon monoxide poisoning, explosion, personal injuryor property damage.! WARNING (SEE SECTION 3.6: AIR FILTER)Do not operate the system without filters. A portion of the dust entrained in theair may temporarily lodge in the duct runs and at the supply registers. Any circulated dust particles could be heated and charred by contact with the heatingelements. This residue could soil ceilings, walls, drapes, carpets and otherarticles in the house.Soot damage may occur even with filters in place when certain types of candles, oil lamps or standing pilots are burned.! WARNINGThe first 36 inches of supply air plenum and ductwork must be constructed ofsheet metal as required by NFPA 90B. The supply air plenum or duct musthave a solid sheet metal bottom directly under the unit with no openings, registers or flexible air ducts located in it. If flexible supply air ducts are used theymay be located only in the vertical walls of a rectangular plenum, a minimumof 6 inches from the solid bottom. Metal plenum or duct may be connected tothe combustible floor base, if not, it must be connected to the unit supply ductflanges such that combustible floor or other combustible material is notexposed to the supply air opening from the downflow unit. Exposing combustible (non-metal) material to the supply opening of a downflow unit cancause a fire resulting in property damage, personal injury or death.Exceptions to downflow warnings: Installations on concrete floor slab with supply air plenum and ductworkcompletely encased in not less than 2 inches of concrete (See NFPA 90B).! CAUTION (SEE SECTION 3.3: AUXILIARY OVERFLOW PAN)In compliance with recognized codes, an auxiliary drain pan must be installedunder all equipment containing evaporator coils that are located in any area of astructure where damage to the building or building contents may occur as aresult of an overflow of the coil drain pan or a stoppage in the primary condensate drain piping. See Section 6.6 of this manual for auxiliary horizontal overflow pan accessory information (model RXBM).! NOTICEImproper installation, or installation not made in accordance with the UnderwritersLaboratory (UL) certification or these instructions, can result in unsatisfactoryoperation and/or dangerous conditions and are not covered by the unit warranty.! WARNING(SEE WARNINGS IN REGARD TO DUCTWORk)DO NOT INSTALL THIS UNIT IN MANUFACTURED (MOBILE) HOMES.IMPROPER INSTALLATION IS MORE LIkELY IN MANUFACTURED HOUSINGDUE TO DUCTWORk MATERIAL, SIzE, LOCATION, AND ARRANGEMENT.INSTALLATIONS IN MANUFACTURED HOUSING CAN CAUSE A FIRE RESULTING IN PROPERTY DAMAGE, PERSONAL INjURY OR DEATH.EXCEPTION: MANUFACTURED HOUSING INSTALLATIONS ARE APPROvEDONLY WITH DOCUMENTATION BY A RECOGNIzED INSPECTION AUTHORITYTHAT THE INSTALLATION HAS BEEN MADE IN COMPLIANCE WITH THEINSTRUCTIONS AND ALL WARNINGS HAvE BEEN OBSERvED.4Continued on next page ❯
! WARNINGPROPOSITION 65: This appliance contains fiberglass insulation.Respirable particles of fiberglassare known to the State of Californiato cause cancer.All manufacturer products meet current Federal OSHA Guidelines forsafety. California Proposition 65warnings are required for certainproducts, which are not covered bythe OSHA standards.California's Proposition 65 requireswarnings for products sold inCalifornia that contain or produceany of over 600 listed chemicalsknown to the State of California tocause cancer or birth defects suchas fiberglass insulation, lead inbrass, and combustion productsfrom natural gas.All “new equipment” shipped forsale in California will have labelsstating that the product containsand/or produces Proposition 65chemicals. Although we have notchanged our processes, having thesame label on all our products facilitates manufacturing and shipping.We cannot always know “when, orif” products will be sold in theCalifornia market.You may receive inquiries from customers about chemicals found in, orproduced by, some of our heatingand air-conditioning equipment, orfound in natural gas used withsome of our products. Listed beloware those chemicals and substances commonly associated withsimilar equipment in our industryand other manufacturers. Glass Wool (Fiberglass) Insulation Carbon Monoxide (CO). Formaldehyde BenzeneMore details are available at thewebsites for OSHA (OccupationalSafety and Health Administration),at www.osha.gov and the State ofCalifornia’s OEHHA (Office ofEnvironmental Health HazardAssessment), at www.oehha.org.Consumer education is importantsince the chemicals and substanceson the list are found in our dailylives. Most consumers are awarethat products present safety andhealth risks, when improperly used,handled and maintained.! WARNINGIF UNIT IS TO BE INSTALLED WITHOUT AN INDOOR COIL, RETURN DUCT ORPLENUM, IT MUST NOT BE INSTALLED DIRECTLY OvER COMBUSTIBLE MATERIAL. IF INSTALLED WITHOUT AN INDOOR COIL WITH A RETURN DUCT ORPLENUM, THE AIR PLENUM OR DUCT MUST HAvE A SOLID SHEET METALBOTTOM WITH NO RETURN AIR OPENINGS, REGISTERS OR FLEXIBLE AIRDUCTS LOCATED DIRECTLY UNDER THE UNIT. EXPOSING COMBUSTIBLEMATERIAL TO THE RETURN OPENING OF AN UPFLOW UNIT WITHOUT ANINDOOR COIL CAN CAUSE A FIRE RESULTING IN PROPERTY DAMAGE, PERSONAL INjURY OR DEATH.! WARNINGTHE SUPPLY AIR PLENUM OR DUCT MUST HAvE A SOLID SHEET METALBOTTOM WITH NO SUPPLY AIR OPENINGS, REGISTERS OR FLEXIBLE AIRDUCTS LOCATED IN IT FOR THE FIRST 36 INCHES OF HORIzONTAL SURFACE ON UNITS WITH ELECTRIC HEATERS. FAILURE TO OBSERvE SUPPLYPLENUM, DUCT WARNINGS CAN CAUSE A FIRE RESULTING IN PROPERTYDAMAGE, PERSONAL INjURY OR DEATH.! WARNING (SEE SPECIFIC AIRFLOW POSITION FOR ADDITIONAL WARNINGS)UNITS ARE FOR DUCTED APPLICATIONS ONLY. A MINIMUM OF 36 INCHES OFSUPPLY AIR PLENUM AND DUCTWORk IS REQUIRED. NO SUPPLY AIR OPENINGS, REGISTERS OR FLEXIBLE AIR DUCTS MAY BE LOCATED WITHIN THEFIRST 36 INCHES OF SUPPLY PLENUM AND DUCTWORk ON UNITS WITHELECTRIC HEATERS. FAILURE TO OBSERvE SUPPLY PLENUM/DUCT WARNINGS CAN CAUSE A FIRE RESULTING IN PROPERTY DAMAGE, PERSONALINjURY OR DEATH.! CAUTIONWhen used on cooling applications, excessive sweating may occur when unitis installed in an unconditioned space. This can result in property damage. Some building codes require extra cabinet insulation and gasketing whenunit is installed in attic applications. I
sonnel for proper installation, adjustment and operation of this unit. Read these instructions thoroughly before attempting installation or operation. Failure to follow these instructions may result in improper installation, adjust-ment, service or maintenance possibly resulting in fire, electrical shock, prop - erty damage, personal injury or .
