Carrier 58MCB Installation, Start-up, And Operating Instructions Manual

Also see for 58MCB: User's information manual Service and maintenance instructions Owner's manual Service and maintenance instruction Nstallation, start-up, and operating instructions

Carrier 58MCB Installation, Start-up, And Operating Instructions Manual Manual pdf 4 page image

Untrained personnel can perform basic maintenance functionssuch as cleaning and replacing air filters. All other operations mustbe performed by trained service personnel. When working onheating equipment, observe precautions in literature, on tags, andon labels attached to or shipped with unit and other safetyprecautions that may apply.These instructions cover the minimum requirements and conformto existing national standards and safety codes. In some instances,these instructions exceed certain local codes and ordinances,especially those that may not have kept up with changing residen-tial construction practices. We require these instructions as aminimum for a safe installation.Wear safety glasses and work gloves. Have a fire extinguisheravailable during start-up and adjustment procedures and servicecalls.CUT HAZARDFailure to follow this caution may result in personal injury.Sheet metal parts may have sharp edges or burrs. Use care andwear appropriate protective clothing and gloves when han-dling parts.Recognize safety information. This is the safety-alert symbol .When you see this symbol on the unit and in instructions ormanuals, be alert to the potential for personal injury.Understand these signal words DANGER, WARNING, and CAU-TION. These words are used with the safety-alert symbol. DAN-GER identifies the most serious hazards which will result in severepersonal injury or death. WARNING signifies hazards whichcould result in personal injury or death. CAUTION is used toidentify unsafe practices which may result in minor personalinjury or product and property damage. NOTE is used to highlightsuggestions which will result in enhanced installation, reliability,or operation.The 58MCB Multipoise Condensing Gas-Fired Furnaces are CSA(formerly AGA and CGA) design-certified for natural and propanegases (see furnace rating plate) and for installation in alcoves,attics, basements, closets, utility rooms, crawlspaces, and garages.The furnace is factory-shipped for use with natural gas. A CSAlisted gas conversion kit is required to convert furnace for use withpropane gas.See Fig. 3 for required clearances to combustibles.Maintain a 1-in. clearance from combustible materials to supply airductwork for a distance of 36 inches horizontally from the furnace.See NFPA 90B or local code for further requirements.These furnaces SHALL NOT be installed directly on carpeting,tile, or any other combustible material other than wood flooring. Indownflow installations, factory accessory floor base MUST beused when installed on combustible materials and wood flooring.Special base is not required when this furnace is installed onmanufacturer’s Coil Assembly Part No. CD5 or CK5, or when CoilBox Part No. KCAKC is used.The 58MCB 040 through 120 size units are CSA (formerly AGAand CGA) design-certified for use in manufactured (mobile)homes when installed as a 2-pipe (direct vent) furnace and afactory accessory conversion kit is used. The 140 size unit is NOTdesign-certified for use in manufactured (mobile) homes. Thesefurnaces are suitable for installation in a structure built on site ora manufactured building completed at final site. The design of thisfurnace line is NOT CSA design-certified for installation inrecreation vehicles or outdoors.This furnace is designed for continuous return-air minimumtemperature of 60°F db or intermittent operation down to 55°F dbsuch as when used with a night setback thermostat. Return-airtemperature must not exceed 80°F db. Failure to follow thesereturn-air limits may affect reliability of heat exchangers, motors,and controls. (See Fig. 4.)These furnaces are shipped with the drain and pressure tubesconnected for UPFLOW applications. Minor modifications arerequired when used in DOWNFLOW, HORIZONTAL RIGHT, orHORIZONTAL LEFT (supply-air discharge direction) applica-tions as shown in Fig. 1. See details in Applications section.Install this furnace only in a location and position as specified inLOCATION and INSTALLATION sections of these instructions.Always provide adequate combustion and ventilation air as speci-fied in section Combustion Air and Vent Pipe Systems of theseinstructions to the furnace.Combustion products must be discharged outdoors. Connect thisfurnace to an approved vent system only, as specified in theCombustion Air and Vent piping sections of these instructions.Never test for gas leaks with an open flame. Use a commerciallyavailable soap solution made specifically for detection of leaks tocheck all connections as specified in the GAS PIPING section ofthese instructions.Always install the furnace to operate within the furnace’s intendedrise range with a duct system which has an external static pressurewithin the allowable range as specified in the SET TEMPERA-TURE RISE section of these instructions and furnace rating plate.When a furnace is installed so that supply ducts carry air circulatedby the furnace to areas outside the space containing the furnace,the return air shall also be handled by ducts sealed to the furnacecasing and terminating outside the space containing the furnace.A gas-fired furnace for installation in a residential garage must beinstalled as specified in the Hazardous Locations section of theseinstructions.The furnace may be used for construction heat provided that thefurnace installation and operation complies with the first CAU-TION in the LOCATION section of these instructions.This gas furnace may be used for construction heat provided that:• The furnace is permanently installed with all electrical wiring,piping, air filters, venting and ducting installed according tothese installation instructions. A return air duct is provided,sealed to the furnace casing, and terminated outside the spacecontaining the furnace. This prevents a negative pressurecondition as created by the circulating air blower, causing aflame rollout and/or drawing combustion products into thestructure.• The furnace is controlled by a thermostat. It may not be ″hotwired″ to provide heat continuously to the structure withoutthermostatic control.• Clean outside air is provided for combustion. This is tominimize the corrosive effects of adhesives, sealers and otherconstruction materials. It also prevents the entrainment ofdrywall dust into combustion air, which can cause fouling andplugging of furnace components.• The temperature of the return air to the furnace is maintainedbetween 55°F (13°C) and 80°F (27°C), with no evening setbackor shutdown. The use of the furnace while the structure is underconstruction is deemed to be intermittent operation per ourinstallation instructions.• The air temperature rise is within the rated rise range on thefurnace rating plate, and the firing rate has been set to thenameplate value.4→→→→