Carrier 58CVA Installation, Start-up, Operating And Service And Maintenance Instructions

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Carrier 58CVA Installation, Start-up, Operating And Service And Maintenance Instructions Manual pdf 7 page image

This gas furnace may be used for construction heat providedthat:-The furnace is permanently installed with all electricalwiring, piping, 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 no lessthan 55 degrees F, with no evening setback or shutdown. Theuse of the furnace while the structure is under construction isdeemed to be intermittent operation per our installationinstructions.-The air temperature rise is within the rated rise range on thefurnace rating plate, and the firing rate has been set to thenameplate value.-The filters used to clean the circulating air during theconstruction process must be either changed ot thoroughlycleaned prior to occupancy.-The furnace, ductwork and filters are cleaned as necessary toremove drywall dust and construction debris from all HVACsystem components after construction is completed.Do not install the furnace on its back or hang furnace withcontrol compartment facing downward. Safety control opera-tion will be adversely affected. Never connect return-air ductsto the back of the furnace. Failure to follow this warningcould result in fire, personal injury, or death. (See Fig. 5.)Step 2—Location Relative to Cooling EquipmentThe cooling coil must be installed parallel with, or on thedownstream side of the unit to avoid condensation in the heatexchangers. When installed parallel with the furnace, dampers orother flow control must prevent chilled air from entering thefurnace. If the dampers are manually operated, they must beequipped with means to prevent operation of either unit unless thedamper is in the full-heat or full-cool position.AIR FOR COMBUSTION AND VENTILATIONProvisions for adequate combustion and ventilation air must beprovided in accordance with Section 8.3 of the NFGC, Air forCombustion and Ventilation, or applicable provisions of the localbuilding codes.Canadian installations must be installed in accordance with NSC-NGPIC Part 7 and all authorities having jurisdiction.Fig. 4—Multipoise OrientationsA02097THE BLOWER IS LOCATEDTO THE RIGHT OF THEBURNER SECTION, ANDAIR CONDITIONED AIR ISDISCHARGED TO THE LEFT.THE BLOWER ISLOCATED BELOW THEBURNER SECTION, ANDCONDITIONED AIR ISDISCHARGED UPWARD.THE BLOWER ISLOCATED ABOVE THEBURNER SECTION, ANDCONDITIONED AIR ISDISCHARGED DOWNWARDTHE BLOWER ISLOCATED TO THE LEFTOF THE BURNER SECTION,AND CONDITIONED AIR ISDISCHARGED TO THE RIGHT.Fig. 5—Prohibit Installation on BackA020546→