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Carrier 50TCQD, Installation Instructions Manual

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Carrier 50TCQD Installation Instructions Manual Download Page 68

68

TEMPERATURES

OUTDOOR--AIR TEMPERATURE

_

F DB (DRY BULB)

RETURN--AIR TEMPERATURE

_

F DB

_

F WB (WET BULB)

HEAT SUPPLY AIR TEMPERATURE

_

F

PRESSURES

REFRIGERANT SUCTION

CIRCUIT A

PSIG

CIRCUIT B

PSIG

REFRIGERANT DISCHARGE CIRCUIT A

PSIG

CIRCUIT B

PSIG

j

VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS

GENERAL

j

ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS (IF EQUIPPED)

j

VERIFY SMOKE DETECTOR UNIT SHUTDOWN BY UTILIZING MAGNET TEST

E

Carrier Corporation 2017

Edition Date: 09/17

Printed in U.S.A.

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: 50TCQ---14---01SI

Replaces: 50TCQ--- 07SI

Summary of Contents for 50TCQD

Page 1: ...tallation 9 Curb mounted Installation 9 Pad mounted Installation 9 Frame mounted Installation 9 Step 3 Inspect Unit 9 Step 4 Provide Unit Support 9 Roof Curb Mount 9 Slab Mount Horizontal Units Only 11 Alternate Unit Support In Lieu of Curb or Slab Mount 11 Step 5 Field Fabricate Ductwork 11 For Units with Accessory Electric Heaters 11 Step 6 Rig and Place Unit 11 Positioning on Curb 11 Step 7 Con...

Page 2: ...it for Thermostat Mode 45 Economizer Controls 47 Indoor Air Quality CO2 sensor 47 Outdoor Air Quality Sensor 47 Space Relative Humidity Sensor 48 Smoke Detector Fire Shutdown FSD 48 Filter Status Switch 48 Supply Fan Status Switch 48 Remote Occupied Switch 48 Power Exhaust output 48 CCN Communication Bus 49 RTU Open Controller System 50 Supply Air Temperature SAT Sensor 52 Outdoor Air Temperature ...

Page 3: ...severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause pers...

Page 4: ...ault Detection and Diagnostic 1 PremierLink Controller 2 RTU Open Multi Protocol Controller 6 Electro mechanical with W7220 Economizer controller Controls Can be used with W7220 EconoMi er X with Fault Detection and Diagnostic Intake Exhaust Options A None B Temperature Economizer with Barometric Relief F Enthalpy Economizer with Barometric Relief K 2 Position Damper U Temperature Ultra Low Leak E...

Page 5: ...5 C14192 Fig 2 Unit Dimensional Drawing 14 Size Unit ...

Page 6: ...6 C14193 Fig 2 Unit Dimensional Drawing 14 Size Unit cont ...

Page 7: ... schematic 4 row indoor coil with two compressor circuits is shown Dual function outdoor and indoor coils are designed to provide parallel coil circuits during evaporator function operation and converging coil circuits during the condenser function operation Reversing Valve and Check Valve Position See Fig 4 on page 8 and Tables 1 3 Troubleshooting Refrigerant Pressure Problems and Check Valves Re...

Page 8: ...nergized Check Valve A Closed Check Valve B Open Check Valve C Closed Check Valve D Open COMPRESSOR ACCUMULATOR HPS COMPRESSOR ACCUMULATOR HPS Filter Drier 2B 1B LPS LOC Acutrol DFT 1 Cooling Liquid Lines DFT 2 2A 1A 1D 2D Outdoor Coil Indoor Coil Comp 2 Comp 1 2C 1C Strainer Heating Mode Liquid Lines Acutrol Reversing Valve Reversing Valve C160139 Fig 4 Typical Unit Piping Schematic o o C08453 Fi...

Page 9: ...r example on curb mounted units some accessories must be installed on the unit before the unit is placed on the curb Review the following for recommended sequences for installation steps Curb mounted installation Install curb Install field fabricated ductwork inside curb Install accessory thru base service connection package affects curb and unit refer to accessory installation instructions for de...

Page 10: ...10 C10365 Fig 6 Roof Curb Details ...

Page 11: ...y with applicable fire codes For Units with Accessory Electric Heaters All installations require a minimum clearance to combustible surfaces of 1 in 25 mm from duct for first 12 in 305 mm away from unit PROPERTY DAMAGE HAZARD Failure to follow this caution may result in damage to roofing materials Membrane roofs can be cut by sharp sheet metal edges Be careful when placing any sheet metal parts on...

Page 12: ...r option may be field converted to horizontal ducted configuration using accessory CRDUCTCV001A00 To convert to horizontal configuration remove screws from side duct opening covers and remove covers Discard the supply duct cover Install accessory CRDUCTCV001A00 to cover the vertical supply duct opening Use the return duct cover removed from the end panel to cover the vertical return duct opening F...

Page 13: ...13 Be careful to not damage any wiring or cut tie wraps securing any wiring 4 Carefully lift the hood assembly with metal tray through the filter access opening and assemble per the steps outlined in Economizer Hood and Two Position Hood 5 If removed reattach the panel under the damper Economizer Hood and Two Position Hood NOTE If the power exhaust accessory is to be installed on the unit the hood...

Page 14: ...ttom See Fig 17 Unit airflow configuration does not determine which drain connection to use Either drain connection can be used with vertical or horizontal applications When using the standard side drain connection ensure the red plug in the alternate bottom connection is tight Do this before setting the unit in place The red drain pan can be tightened with a 1 2 inch square socket drive extension...

Page 15: ...without through the curb power conduit must be used to route the main power from the condenser end of the unit to either the factory option disconnect the bottom of the control box or the single point box accessory 1 inch conduit is provided behind the access panel located under the control box For those units that require conduit larger than 1 inch it must be field supplied Figures 19 21 show the...

Page 16: ...DISCONNECT SWITCH ALUMINUM WIRE A93033 Fig 24 Disconnect Switch and Unit Units Without Disconnect Option Units With Disconnect Option 2 4 6 1 3 5 L1 L2 L3 Optional Disconnect Switch Disconnect factory test leads discard Factory Wiring 11 13 13 L1 L2 L3 TB1 208 230 3 60 460 3 60 575 3 60 Disconnect per NEC C10015 Fig 25 Power Wiring Connections All Units All field wiring must comply with the NEC an...

Page 17: ...17 a50 9707 Fig 26 Typical 50TCQ Control Wiring Diagram ...

Page 18: ...18 a50 9708 Fig 27 Typical 50TCQ Power Wiring Diagram 208 230V 3 Phase 60Hz unit shown ...

Page 19: ...for 200A NFD 7 Tighten the locking screw to secure the shaft to the NFD 8 Turn the handle to the OFF position with red arrow pointing at OFF 9 Install the handle on to the painted cover horizontally with the red arrow pointing to the left 10 Secure the handle to the painted cover with 2 screws and lock washers supplied 11 Engaging the shaft into the handle socket re install 3 hex screws on the NFD...

Page 20: ...he line side of the factory disconnect option route the wires through the web bushing located on the bottom of the disconnect box For the load side wiring to the factory option disconnect route the wires through the hole on the right side of the disconnect Be sure to create a drip loop at least 6 inches long Duty Cycle the unit powered convenience outlet has a duty cycle limitation The transformer...

Page 21: ...it may be attached to the connectors on the basepan Pull correctly rated high voltage and low voltage wires through appropriate conduits Connect the power conduit to the internal disconnect if unit is so equipped or to the external disconnect through unit side panel Remove one of the two knockouts located on the bottom left side of the unit control box Use this hole for the control conduit LOW VOL...

Page 22: ...s located in the 50TCQ unit s main control box see Fig 36 on page 23 All connections are factory made through harnesses to the unit s CTB to IFC belt drive motor or to ECM direct drive motor reversing valve solenoids and to defrost thermostats Refer to Table 5 for details of DFB Inputs and Outputs Reversing valve control The DFB has two outputs for unit reversing valve control Operation of the rev...

Page 23: ...6 COMP 2 DO 24Vac P3 8 FPT2 REHEAT HP 8 HEAT 2 DO 24Vac E HEAT TB4 1 COM 24Vac P3 3 TB4 3 Configuration Point Name Type of I O Connection Pin Number Unit Connection Note Select Jumper 24Vac P1 1 2 Compressor 24Vac P1 3 Use for 50TCQD Speed Up Configuration Point Name Type of I O Connection Pin Number Unit Connection Note Speed Up Jumper JMP17 Speed Up Jumper JMP18 Jumper for 1 3 seconds Factory Te...

Page 24: ...ol box after removing one of the two knockouts in the corner of the box Using a connector at the control box to protect the wire as it passes into the control box Pull the wires over to the terminal strip at the upper left corner of the Central Terminal Board CTB Use the connector at the control box and the wire tie to ensure that the thermostat wire is tight and will not be damaged by contact wit...

Page 25: ...ypical Single Point Installation Heater and Supplementary Fuses When the unit MOCP device value exceeds 60 A unit mounted supplementary fuses are required for each heater circuit These fuses are included in accessory Single Point Boxes with power distribution and fuse blocks All fuses on 50TCQ units are 60 A Note that all heaters are qualified for use with a 60 A fuse regardless of actual heater a...

Page 26: ... Outdoor Temperature Control at One Heater Stage Move either heater wire to this terminal and connect outdoor temperature switch between 2nd and 3rd terminals C10354 Fig 41 Accessory Electric Heater Control Connections ...

Page 27: ...cifications W7220 Economizer Module The module is designed for use with 2 to 10 Vdc or bus communicating actuator The module includes terminals for CO2 sensor mixed air sensor and an outdoor dry bulb sensor Enthalpy and other options are available with bus sensors User Interface Provides status for normal operation setup parameters checkout tests and alarm and error conditions with a 2 line 16 cha...

Page 28: ...r Table 7 Economizer Module Left Hand Terminal Blocks Label Type Description Top Left Terminal Block MAT MAT 20k NTC and COM Supply Air Temperature Sensor polarity insensitive connection OAT OAT 20k NTC and COM Outdoor Air Temperature Sensor polarity insensitive connection S BUS S BUS S Bus Sylk Bus Enthalpy Control Sensor polarity insensitive connection Bottom Left Terminal Block IAQ 2 10 2 10 Vd...

Page 29: ...le CO2 Sensor Wiring When using a CO2 sensor the black and brown common wires are internally connected and only one is connected to IAQ COM on the W7220 Use the power from the W7220 to power the CO2 sensor OR make sure the ground for the power supplies are common See Fig 45 for CO2 sensor wiring CO2 SENSOR 24V ANALOG OUT L1 HOT L2 RED BLACK YELLOW BROWN ORANGE GREEN POWER SUPPLY PROVIDE DISCONNECT...

Page 30: ...eters appear and only MIN POS will display If you have a CO2 sensor the DCV MIN and DCV MAX will appear AND if you have 2 speed fan DCV MIN high and low speed and DCV MAX high and low speed will appear NOTE Some parameters in the menus use the letters MA or MAT indicating a mixed air temperature sensor location before the cooling coil This unit application has the control sensor located after the ...

Page 31: ...ensor sends invalid value if not connected short or out of range RA HUM _ _ 0 to 100 RETURN AIR RELATIVE HUMIDITY Accessory enthalpy sensor required Displays measured value of return air humidity from RA sensor Displays if sensor sends invalid value if not connected short or out of range IN CO2 _ _ _ ppm 0 to 2000 ppm SPACE RETURN AIR CO2 CO2 sensor required accessory or factory option Displays va...

Page 32: ...fault for MIN POS L is 3 2V and MIN POS H is 2 8V VENTMAX 2 8 V 2 to 10 Vdc DCV MAXIMUM DAMPER POSITION Displays only if a CO2 sensor is connected Used for Vbz ventilation max cfm setpoint VENTMAX is the same setting as MIN POS would be if you did not have the CO2 sensor 100 to 9990 cfm increment by 10 If OA MA RA and CO2 sensors are connected and DCV CAL ENABLE is set to AUTO mode the OA dampers ...

Page 33: ...YES LCD will briefly flash YES and change to NO but all parameters will change to the factory default values NOTE RECHECK AUX2 IN and FANTYPE for required 2 speed values ADVANCED SETUP MA LO SET 45_F 7_C 35 to 65_F 2 to 18_C Incremented by 1_ SUPPLY AIR TEMPERATURE LOW LIMIT Temperature to activate Freeze Protection close damper and alarm if temperature falls below setup value FREEZE POS CLO CLO o...

Page 34: ...for an out of calibration discharge air temperature DAT sensor 2SP FAN DELAY 5 Minutes 0 to 20 minutes in 1 minute increments TIME DELAY ON 2nd STAGE ECONOMIZING When in economizing mode this is the delay for the high speed fan to try to satisfy the call for second stage cooling before the first stage mechanical cooling is enabled CHECKOUT DAMPER MINIMUM POSITION n a n a The checkout for the dampe...

Page 35: ...the alarm will go away Must have OA MA and RA sensors for DCV calibration set up is in the Advanced setup menu DA SENS ALM n a n a DISCHARGE AIR TEMPERATURE SENSOR ALARM Discharge air temperature is out of the range set in the ADVANCED SETUP Menu Check the temperature of the discharge air SYS ALARM n a n a When AUX1 O is set to SYS and there is any alarm e g failed sensors etc the AUX1 O terminal ...

Page 36: ...stage of mechanical cooling Y2 O after the delay if the call for Y1 I and Y2 I have not been satisfied Table 14 Dry Bulb Operation With DCV CO2 Sensor 1 Speed Fan Demand Controlled Ventilation DCV Outside Air Good to economize Y1 I Y2 I Fan Speed Y1 O Y2 O Occupied Unoccupied Below CO2 set No Off Off High 0 v Off 0 v Off VENTMIN Closed On Off High 24 v On 0 v Off VENTMIN Closed On On High 24 v On ...

Page 37: ...sed On Off High 24 v On 0 v Off VENTMIN Closed On On High 24 v On 24 v On VENTMIN Closed Yes Off Off High 0 v Off 0 v Off VENTMIN Closed On Off High 0 v Off 0 v Off VENTMIN to Full Open Closed to Full Open On On High 24 v On 0 v Off VENTMIN to Full Open Closed to Full Open Above set No Off Off High 0 v Off 0 v Off VENTMIN to VENTMAX Closed On Off High 24 v On 0 v Off VENTMIN L to VENTMAX Closed On...

Page 38: ...n DCV Outside Air Good to economize Y1 I Y2 I Fan Speed Y1 O Y2 O Occupied Unoccupied Below set No Off Off Low 0 v Off 0 v Off VENTMIN L Closed On Off Low 24 v On 0 v Off VENTMIN L Closed On On High 24 v On 24 v On VENTMIN H Closed Yes Off Off Low 0 v Off 0 v Off VENTMIN L Closed On Off Low 0 v Off 0 v Off VENTMIN L to Full Open Closed to Full Open On On High 24 v On 0 v Off VENTMIN H to Full Open...

Page 39: ...ion DCV Outside Air Good to economize Y1 I Y2 I Fan Speed Y1 O Y2 O Occupied Unoccupied Below set No Off Off Low 0 v Off 0 v Off VENTMIN L Closed On Off Low 24 v On 0 v Off VENTMIN L Closed On On High 24 v On 24 v On VENTMIN H Closed Yes Off Off Low 0 v Off 0 v Off VENTMIN L Closed On Off Low 0 v Off 0 v Off VENTMIN L to Full Open Closed to Full Open On On High 24 v On 0 v Off VENTMIN H to Full Op...

Page 40: ...the economizing mode to YES economizing is available When all of the OA conditions are above the selected boundary the conditions are not good to economize and the mode is set to NO Fig 47 shows the 5 current boundaries There is also a high limit boundary for differential enthalpy The high limit boundary is ES1 when there are no stages of mechanical cooling energized and HL high limit when a compr...

Page 41: ...n page 34 to test the damper operation and any configured outputs Only items that are configured are shown in the Checkout menu All settings are stored in non volatile flash memory NOTE See Interface Overview on page 29 for information about menu navigation and use of the keypad To perform a Checkout test 1 Scroll to the desired test in the Checkout menu using the the and buttons 2 Press the butto...

Page 42: ...controller is shipped in Sensor mode To be used with a thermostat the PremierLink controller must be configured to Thermostat mode Refer to the PremierLink Controller Installation Start up and Configuration Instructions for Operating Mode Supply Air Temperature SAT Sensor Units with a factory installed PremierLink controller include a supply air temperature SAT sensor 33ZCSENSAT This sensor is a t...

Page 43: ...43 a50 9710 Fig 50 PremierLinkt Controller Wiring Schematic ...

Page 44: ...ce sensor must be used T 55 space temperature sensor provides a signal of space temperature to the PremierLink controller T 56 provides same space temperature signal plus it allows for adjustment of space temperature setpoints from the face of the sensor by the occupants 2 3 4 5 6 1 SW1 SEN BRN GND BLU SPT RED WHT GND BLK CCN COM SENSOR WIRING C08201 Fig 51 T 55 Space Temperature Sensor Wiring Con...

Page 45: ...at Mode these functions are not available Fire Shutdown FSD Remote Occupied RMTOCC Compressor Safety CMPSAFE Supply Fan Status SFS and Filter Pressure Switch FILTER Table 22 PremierLink Controller Sensor Usage APPLICATION OUTDOOR AIR TEMPERATURE SENSOR RETURN AIR TEMPERATURE SENSOR OUTDOOR AIR ENTHALPY SENSOR RETURN AIR ENTHALPY SENSOR Differential Dry Bulb Temperature with PremierLink PremierLink...

Page 46: ...ation bus OAQ Outdoor Air Quality CO2 CMPSAFE Compressor Safety RH Relative Humidity FILTER Dirty Filter Switch SFS Supply Fan Status Table 24 Thermostat Mode TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL 1 RAT SEN Analog 10k thermistor 2 G Discrete 24VAC 3 RAT SEN Analog 10k thermistor 4 Y1 Discrete 24VAC 5 6 Y2 Discrete 24VAC 7 LOOP PWR Analog 24VDC 8 W1 Discrete 24VAC 9 IAQ SEN Analog 4 20mA 10 W2...

Page 47: ...he Indoor Air Quality Sensor For each sensor use two 2 conductor 18 AWG American Wire Gage twisted pair cables unshielded to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the sensor See Fig 56 Connect the 4 20 mA terminal t...

Page 48: ...tion Start up and Configuration Instructions for instructions on using the PremierLink configuration screens and on unit alarm sequence Supply Fan Status Switch The PremierLink controller can monitor supply fan operation through a field supplied installed differential pressure switch This sequence will prevent or interrupt operation of unit cooling heating and economizer functions until the pressu...

Page 49: ...st be insulated with PVC PVC nylon vinyl Teflon or polyethylene An aluminum polyester 100 foil shield and an outer jacket of PVC PVC nylon chrome vinyl or Teflon with a minimum operating temperature range of 20_C to 60_C is required Do not run communication wire in the same conduit as or next to any AC voltage wiring Teflon is a registered trademark of DuPont The communication bus shields must be ...

Page 50: ...ll connections to the RTU Open controller board NOTE The RTU Open controller acts as an intelligent imbedded thermostat A room thermostat cannot be used with the RTU Open controller J4 J2 J1 J5 J5 J22 J17 J19 J14 J11 J22 J3 J13 J12 J15 J20 Network Comm Configurable Input_8 24 VAC Configurable Input_5 24 VAC Configurable Input_3 24 VAC Input_9 Humidistat 24 VAC 24 VAC Input _8 Enthalpy AO 1 ECON Gn...

Page 51: ...51 a50 9711 Fig 66 RTU Open Controller System Wiring Diagram ...

Page 52: ...inary Output 6 LEGEND AI Analog Input AO Analog Output BI Binary Input BO Binary Output 1 Safety Chain Feedback 24 vac required at this terminal to provide Run Enable status See Input Output section for additional instructions 2 These inputs are configurable If installed they take the place of the default input on the specific channel See appropriate Input Configuration Section for wiring and setu...

Page 53: ...4 VAC See Fig 69 for internal connections at the T 59 Connect the SEN terminal BLU to the RTU Open controller at J20 1 Connect the COM terminal BRN to J20 2 Connect the SET terminal STO or BLK to J20 3 OR SET SEN OPB COM PWR BLU SPT BLK STO 24 VAC SENSOR WIRING POWER WIRING BRN COM NOTE Must use a separate isolated transformer J20 3 J20 2 J20 1 C10291 Fig 69 Space Temperature Sensor Typical Wiring...

Page 54: ...e filter status accessory is a field installed accessory This accessory detects plugged filters When installing this accessory the unit must be configured for filter status by setting MENU Config Inputs input 3 5 8 or 9 to Filter Status and normally open N O or normally closed N C Input 8 or 9 is recommended for ease of installation Refer to Fig 65 and 66 for wire terminations at J5 Fan Status The...

Page 55: ...formation read sensor values and perform maintenance This is an accessory interface that does not come with the RTU Open controller Wire the Equipment Touch interface to the RTU Open controller J13 local access port There are 2 password protected levels in the display User and Admin See the Equipment Touch Installation and Setup Guide for more information See Appendix A in the guide for navigation...

Page 56: ... SW1 SW2 MSB LSB TX RX 12 DVC Rnet Rnet GND RNET J12 J13 J15 J20 C14131 Fig 75 PC Running Field Assistant Table 28 LEDs The LEDs on the RTU Open controller show the status of certain functions If this LED is on Status is Power The RTU Open controller has power Rx The RTU Open controller is receiving data from the network segment Tx The RTU Open controller is transmitting data over the network segm...

Page 57: ...de Air Enthalpy Switch Return Air Enthalpy Sensor CTB ECON P LINK to J4 2 or RTU Open to J2 6 C11161 Fig 77 Outside and Return Air Enthalpy Sensor Wiring Smoke Detectors Smoke detectors are available as factory installed options on 50TCQ models Smoke detectors may be specified for supply air only or for return air without or with economizer or in combination of supply air and return air All compon...

Page 58: ...units where one value is shown it is the same for either 208 or 230 volts 3 Unbalanced 3 Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2 Use the following formula to determine the percentage of voltage imbalance Voltage Imbalance 100 x max voltage deviation from average voltage average voltage Example Supply voltage is 230 3 60 AB 224 v BC 231...

Page 59: ...9 611 198 188 200 200 191 209 580 612 202 192 225 200 195 214 584 616 HIGH NONE 76 90 80 402 80 100 85 406 81 100 86 407 84 100 90 411 291A 12 4 16 5 34 4 39 7 119 125 125 125 120 126 436 442 123 129 125 150 124 130 440 446 124 130 125 150 125 131 441 447 127 134 150 150 130 136 445 451 288A 291A 19 9 26 5 55 3 63 8 145 156 150 175 144 154 513 530 149 159 150 175 148 158 517 534 150 160 150 175 14...

Page 60: ...222 82 90 80 226 293A 296A 50 0 48 1 73 80 81 232 76 80 85 236 74 80 82 234 78 80 87 238 MED NONE 24 30 25 136 28 30 30 140 26 30 27 138 30 35 32 142 293A 16 5 15 9 44 45 43 152 48 50 48 156 46 50 45 154 50 50 50 158 290A 293A 26 5 25 5 56 60 55 187 60 60 59 191 58 60 56 189 62 70 61 193 296A 33 5 32 2 65 70 62 168 69 70 67 172 66 70 64 170 70 70 69 174 290A 296A 43 5 41 9 77 80 73 220 81 90 78 22...

Page 61: ...572 604 198 187 200 200 191 208 576 608 199 188 200 200 192 210 577 609 203 192 225 200 196 214 581 613 HIGH NONE 76 90 80 402 80 100 85 406 81 100 86 407 84 100 90 411 291A 12 4 16 5 34 4 39 7 119 125 125 125 120 126 436 442 123 129 125 150 124 130 440 446 124 130 125 150 125 131 441 447 127 134 150 150 130 136 445 451 288A 291A 19 9 26 5 55 3 63 8 145 156 150 175 144 154 513 530 149 159 150 175 ...

Page 62: ...2 84 90 82 226 293A 296A 50 0 48 1 74 80 82 232 78 80 87 236 76 80 84 234 80 90 89 238 MED NONE 26 30 27 136 30 35 32 140 28 30 29 138 32 35 33 142 293A 16 5 15 9 46 50 45 152 50 50 50 156 48 50 47 154 52 60 52 158 290A 293A 26 5 25 5 58 60 56 187 62 70 61 191 60 60 58 189 64 70 63 193 296A 33 5 32 2 66 70 64 168 70 70 69 172 68 70 66 170 72 80 70 174 290A 296A 43 5 41 9 79 80 75 220 82 90 80 224 ...

Page 63: ...omplete the installation Step 12 Install Accessories Available accessories include Roof curb Thru base connection kit must be installed before unit is set on curb Manual outside air damper Two position motorized outside air damper EconoMi er IV with control and integrated barometric relief EconoMi er2 without control for external signal and integrated barometric relief Barometric relief Power exha...

Page 64: ... motor shaft and the blower shaft 2 Set the tension gauge to the desired tension see Table 1 in Fig 81 Place the large O ring at that point 3 Press the tension checker downward on the belt until the large O ring is at the bottom of the straightedge 4 Adjust the belt tension as needed Adjust belt tension by loosing the motor mounting plate front bolts and rear bolt see Fig 82 and slide the plate to...

Page 65: ...65 BLOWER PULLEY V BELT MOTOR PULLEY MOTOR MOTOR MOUNTING PLATE MOUNTING BOLTS 4 C11504 Fig 82 Belt Drive Motor Mounting ...

Page 66: ...rporation 2017 Edition Date 09 17 Printed in U S A Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 50TCQ 14 01SI Replaces 50TCQ 07SI ...

Page 67: ...OOR AIR INLET SCREENS ARE IN PLACE j VERIFY THAT UNIT IS LEVEL j CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND VERIFY SETSCREW IS TIGHT j VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED j VERIFY THAT SCROLL COMPRESSORS ARE ROTATING IN THE CORRECT DIRECTION j VERIFY INSTALLATION OF THERMOSTAT II START UP COOLING CYCLE ELECTRICAL SUPPLY VOLTAGE L1 L2 L2 L3 L...

Page 68: ...B PSIG j VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS GENERAL j ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS IF EQUIPPED j VERIFY SMOKE DETECTOR UNIT SHUTDOWN BY UTILIZING MAGNET TEST ECarrier Corporation 2017 Edition Date 09 17 Printed in U S A Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog ...

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