Supply fan adjustment

Trane RT-SVX19A-E4 Supply fan adjustment, Motor sheave / Fan speed, Fan Speed RPM Standard Drive

Page 15

Installation

Use the following procedure to determine the proper adjustment of the supply fan for a specific application.

1.Determine total external static pressure about system and accessories.

a.Obtain the design airflow rate and the design external static pressure drop through the distribution system.

b. Add static pressure drop of the accessories installed on the unit. (Table 7,8 & 9)

c. Add the total accessory static pressure drop (from step 1b) to the design external static pressure (from step 1a).The sum of these two values is the total system external static pressure.

2.Using the Tables 10 through 20 to find the external static pressure that most closely approximates total system external static pressure. Then locate the appropriate airflow rate for your unit. The value obtained represents the brake horsepower for the supply fan motor and the fan RPM.

3.Adjust motor sheave according to Table 6.

Table 6 - Motor sheave / Fan speed

Fan Speed (RPM)

Standard Drive

	6 turns	5 turns	4 turns	3 turns	2 turns	1 turns
UNIT	Open	Open	Open	Open	Open	Open	Closed

YKD/YKH 155	566	601	637	672	708	743	N/A
YKD/YKH 175	724	769	815	860	906	951	N/A
YKD/YKH 200	513	550	586	623	659	696	N/A
YKD/YKH 250	588	619	650	681	712	743	N/A

TKD/TKH 155	566	601	637	672	708	743	N/A
TKD/TKH 175	724	769	815	860	906	951	N/A
TKD/TKH 200	513	550	586	623	659	696	N/A
TKD/TKH 250	588	619	650	681	712	743	N/A

WKD/WKH 125	533	566	600	633	667	700	N/A
WKD/WKH 155	566	601	637	672	708	743	N/A
WKD/WKH 200	513	550	586	623	659	696	N/A


				Fan Speed (RPM)
				Oversized Drive

	6 turns	5 turns	4 turns	3 turns	2 turns	1 turns
UNIT	Open	Open	Open	Open	Open	Open	Closed

YKD/YKH 155	672	714	756	798	840	882	N/A
YKD/YKH 175	791	840	890	939	989	1038	N/A
YKD/YKH 200	680	711	742	773	804	835	N/A
YKD/YKH 250	690	722	754	786	818	850	N/A

TKD/TKH 155	672	714	756	798	840	882	N/A
TKD/TKH 175	791	840	890	939	989	1038	N/A
TKD/TKH 200	680	711	742	773	804	835	N/A
TKD/TKH 250	690	722	754	786	818	850	N/A

WKD/WKH 125	724	769	815	860	906	951	N/A
WKD/WKH 155	513	550	586	623	659	696	N/A
WKD/WKH 200	588	619	650	681	712	743	N/A

RT-SVX19A-E4

Image 15

Contents

Installation Operation Maintenance Reception in France only Safety recommendationsForeword ReceptionStorage WarrantyMaintenance contract RefrigerantContents Unit Options Reception of units Rooftop unitUnit handling Roof curb Installation TKD-WKD-YKD accessories Sling lengths and maximum unit weightUnit size Minimum clearances Minimum clearances mm Dimensions/Weights/ClearancesWeigths & center of gravity Figure Weights of Options & accessoriesInstalling the unit Installing the unit on the groundUnit mounting on roof Downflow discharge units TKD,WKD,YKD Using the rooftop curb Connection of duct network Horizontal discharge units TKH,WKH,YKH Condensate drain line connection Condensate drain pipingUnit Gas pipework installationGas leak check procedure Gas burner modelsFilter arrangement Filter installationSupply fan adjustment Motor sheave / Fan speedFan Speed RPM Standard Drive Belt tensioning To increase airflowTo decrease airflow To increase belt tensionComponent air pressure drops YKD/YKH Pressure drop through accessoriesTKH TKD/TKH Pressure drop through accessoriesAirflow EU2/G2 EU4/G4 100% TKDWKH WKD/WKH Pressure drop through accessoriesFilter 100% WKDYK 155 External static pressure Supply fan performancesYK 175 External static pressure YK 250 External static pressure TK 200 External static pressure TK 175 External static pressureTK 250 External static pressure External Static Pressure Pa 275 300275 300 WK 155 External static pressure TKD/TKH, WKD/WKH units YKD/YKH units Factory supplied Disconnect switch OptionPower wiring Electrical connectionWith Electric heat Electrical data YKD/YKH Unit WiringElectrical Characteristics Unit amps Scroll compressors Compressor electrical phasingOutdoor Fan 155 175 200 250 Compressor155 200 Compressor Electrical data TKD/TKH Supply fan motor155 175 200 250 Indoor Fan Electrical data YKD/YKH Supply fan motor Electrical data WKD/WKH Supply fan motorElectrical data Combustion Blower Motorr Unit controlled by thermostat Control wiringZone sensor wire size and maximum length Maximum length Zone sensor wire sizeUnit controlled by Tracker supervisor Unit controlled by BASSpecifications CO2 sensorsWall-mounted and duct-mounted CO2 sensors CO2 sensor wire size Power supply requirementsWiring the wall-mounted CO2 sensor Wiring the duct-mounted CO2 sensorMounting the duct-mounted CO2 sensor CO2 sensor maintenanceRemote potentiometer Remote potentiometer dimensionsDuct mounting of fire thermostat Fire thermostatSmoke detector High temperature safety thermostatRemote fault relay Clogged filter detectorCommunication Interfaces Water connection inlet/outlet 1 ¼ ISO R7 Hot water coil Installation and connectionHot water coil Down flow units onlySoft Starter Electric Heater25% manual fresh air hood 25% fresh air hoodDownflow version Barometric reliefOperation with a conventional thermostat OperationThermostat signals are as follows Conventional thermostat Gas/ Electric, Electric HeatConventional thermostat Heat Pump OK to Unoccupied modeCooling/Economizer Operation Cooling/Economizer Operation with Thermostat1,2ECA board LED Setting the economizer or 0-50% motorized hood optionMinimum fresh air adjustment Test procedures Power-up initializationTest mode procedure at the ReliaTel control board Step Step Test ModeAuto Test Mode Test modesGas valve Unit start-upGas burner data Marking category of the gas section in different countriesOperating pressures Starting the unit in cooling modeFinal installation checklist Check torque of power cables contactEvaporator Fan Operation Cooling without an EconomizerCooling with an Economizer Low Ambient OperationIgnition Module Potentiometer SettingEconomizer Set-Up ReliaTel Control Heating OperationFinal installation checklist DiagnosticsLED status End user routine maintenance Air filtersRefrigerant charge Service technician maintenance Condenser coilHot water coil option System Status Checkout Procedure TroubleshootingCooling Failure Service FailureSystem failure Heating FailureFan Failure Switch Resetting Cooling and Ignition LockoutsZone Temperature Sensor ZTS Service Indicator Clogged Filter SwitchThermistor Resistance / Temperature Chart Temperature/resistance coefficient is negativeLiterature order number

Trane RT-SVX19A-E4 Supply fan adjustment, Motor sheave / Fan speed, Fan Speed RPM Standard Drive

Installation