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

Also see for 58TUA: Service and maintenance instructions User's information manual User's information manual Installation, start-up, and operating instructions Installation, start-up, and operating instructions

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Carrier 58TUA Installation, Start-up, And Operating Instructions Manual Manual pdf 8 page image

Screw terminals (HUM and Com) are provided for 24-vhumidifier connection. The terminals are energized with 24v,0.5-amp maximum when the gas valve is energized.Step 7— VentingRefer to the enclosed Installations Instructions, GAMA ventingtable for Category I furnaces, and QUIK•VENT™ table for 1- and2- stage Category I fan-assisted furnaces. In Canada use ventingtables found in CAN/CGA B149.1 or .2. The horizontal portion ofthe venting system shall maintain a minimum of 1/4-in. upwardslope per linear ft (away from furnace), and it shall be rigidlysupported every 5 ft or less with hangers or straps to ensure thatthere will be no movement after installation.Step 8—Start-Up, Adjustment, and Safety CheckGENERALThe furnace must have a 115-v power supply properly connectedand grounded. Correct polarity must be maintained to enable gasheating operation.The gas service pressure must not exceed 0.5 psig (14-in. wc), andno less than 0.16 psig (4.5-in. wc).Thermostat wire connections at R and W/W1 are the minimumrequired for gas heating operation. W2 must be connected for2-stage heating thermostats. Com, Y/Y2, and G are required forcooling, heat pumps, and some clock thermostats. These must bemade at the 24-v terminal block on the control. (See Fig. 10.)This furnace can be installed with either a single-stage heating ora 2-stage heating thermostat.For single-stage thermostats, connect thermostat R to W/W1 at thefurnace control terminal block. (See Fig. 8.) For single-stagethermostats, the control will determine, based on length of previ-ous heating on and off cycles, when to operate in low- andhigh-gas heat for optimum comfort. Setup switch-2 (SW-2) mustbe in the factory-shipped OFF position. See Fig. 11 and Tables 6and 7 for setup switch information.If a 2-stage heating thermostat is to be used, move SW-2 to the ONposition at the end of the furnace installation. This overrides thebuilt-in control process for selecting high and low fire and allowsthe 2-stage thermostat to select gas heating modes. The W2 fromthe thermostat must be connected to W2 on the control terminalblock. (See Fig. 9.)Table 5—Electrical DataUNIT SIZEVOLTS—HERTZ—PHASEOPERATINGVOLTAGE RANGE MAXUNITAMPSMINWIREGAGEMAX WIRELENGTH (FT)‡MAX FUSE ORHACR-TYPECKT BKR AMPS†Max* Min*040-12 115—60—1 127 104 10.9 14 34 15060-08 115—60—1 127 104 8.2 14 45 15060-12 115—60—1 127 104 11.4 14 32 15080-14 115—60—1 127 104 11.7 14 31 15080-16 115—60—1 127 104 13.5 14 27 15100-12 115—60—1 127 104 10.5 14 35 15100-16 115—60—1 127 104 13.2 14 28 15100-20 115—60—1 127 104 19.0 12 30 20120-16 115—60—1 127 104 13.2 14 28 15120-20 115—60—1 127 104 18.2 12 31 20135-20 115—60—1 127 104 17.4 12 33 20* Permissible limits of the voltage range at which the unit will operate satisfactorily.† Time-delay fuse is recommended.‡ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.Fig. 8—Heating and Cooling Application Wiring Diagram 1-Stage Thermostat and Condensing UnitA93378115-VOLT FIELD-SUPPLIEDFUSEDDISCONNECTJUNCTIONBOXCONTROLBOX24-VOLTTERMINALBLOCKTWO-WIREHEATING-ONLYFOURWIRE1-STAGETHERMOSTATTERMINALS FIELD-SUPPLIEDFUSED DISCONNECTCONDENSINGUNITFURNACECOMRW Y R GGNDGNDFIELD 24-VOLT WIRINGFIELD 115-, 208/230-, 460-VOLT WIRINGFACTORY 24-VOLT WIRINGFACTORY 115-VOLT WIRINGNOTE: Connect Y-terminal asshown for properoperation.NOTE: If any of the original wire,as supplied, must be replaced, usesame type or equivalent wire.208/230- OR460-VOLTTHREEPHASE208/230-VOLTSINGLEPHASEWHTBLKWHTBLKW/W1W2Y/Y2G8