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

Also see for 58UHV Series: Installation, start-up, and operating instructions User's information manual Installation, start-up, and operating instructions Installation, start-up, and operating instructions

Contents

Carrier 58UHV Installation, Start-up, And Operating Instructions Manual Manual pdf 5 page image

For Example:COMBUSTION AIR FROM UNCONFINED SPACE58UHV and 58UXVFurnacesHigh-Stage InputBtuhFree Area per Opening(Sq In.)60,000 10080,000 100100,000 100117,000 117b. If the building is constructed unusually tight, a permanentopening directly communicating with the outdoors shouldbe provided. This opening shall have a minimum free areaof 1 sq in. per 4000 Btuh of total input rating for allequipment in the enclosure. (See Fig. 3.)c. If the furnace is installed on a raised platform to provide areturn-air plenum, and return air is taken directly from thehallway or space adjacent to the furnace, all air forcombustion must come from outdoors. (See Fig. 3.)2. All air from outside the structure:a. If combustion air is taken from outdoors through verticalducts, the openings and ducts MUST have at least 1 sq in.of free area per 4000 Btuh of the total input for allequipment within the confined space. (See Fig. 3.)For Example:COMBUSTION AIR FROM OUTDOORS THROUGHVERTICAL DUCTS58UHV and 58UXVFurnaces High-StageInput BtuhFree Area per Opening(Sq In.)Round Pipe(In. Dia)60,000 15.0 580,000 20.0 6100,000 25.0 6117,000 29.3 7b. If combustion air is taken from the outdoors throughhorizontal ducts, the openings and ducts MUST have atleast 1 sq in. of free area per 2000 Btuh of the total inputfor all equipment within the confined space. (See Fig. 3.)For Example:COMBUSTION AIR FROM OUTDOORS THROUGHHORIZONTAL DUCTS58UHV and 58UXVFurnaces High-StageInput BtuhFree Area per Opening(Sq In.)Round Pipe(In. Dia)60,000 30.0 780,000 40.0 8100,000 50.0 8117,000 58.5 9c. When ducts are used, they must be of the same cross-sectional area as the free area of the openings to which theyconnect. The minimum dimension of ducts must not be lessthan 3 in. (See Fig. 3.)INSTALLATIONStep 1—Upflow InstallationDo not install the furnace on its back. Safety control operationwill be adversely affected. Never connect return-air ducts tothe sides or back of the furnace. A failure to follow thiswarning could result in fire, personal injury, or death.NOTE: Door clip on the control door may be removed for upflowinstallations.Fig. 2—Confined Space: Air for Combustion andVentilation from an Unconfined SpaceA89012SUPPLYAIR6″ MIN(FRONT) †RETURN AIRVENT THROUGH ROOF1 SQ IN.PER 1000BTUH* IN DOOROR WALL12″ MAX1 SQ IN.PER 1000BTUH* IN DOOROR WALL12″ MAXINTERIORHEATEDSPACE* Minimum opening size is 100 square in. withminimum dimensions of 3-In.† Minimum of 3-In. when type-B1 vent is used.UNCONFINEDSPACECONFINEDSPACEFig. 3—Confined Space: Air for Combustion andVentilation from OutdoorsA890131 SQ IN.PER4000BTUH*DUCTSTOOUTDOORS1 SQ IN.PER 4000BTUH*SUPPLYAIRVENTTHROUGHROOFDBACE1 SQ IN.PER 4000BTUH*DUCTTOOUTDOORSRETURN AIR1 SQ IN.PER 2000BTUH*1 SQ IN.PER 2000BTUH*DUCTSTOOUTDOORS12″ MAX12″ MAX12″ MAXUse any of the followingcombinations of openings:A & B C & D D & E F & GNOTE:*Minimum dimensions of 3-In.CONFINEDSPACE12″MAX12″MAXOUTDOORS1 SQ IN.PER4000BTUH*FG5