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RTU--OPEN CONTROL SYSTEM

RTU--Open Controller

The RTU--OPEN controller is an integrated component of

the Carrier rooftop unit. Its internal application

programming provides optimum performance and energy

efficiency. RTU--OPEN enables the unit to run in 100%

stand--alone control mode, Carrier’s I--Vu Open network,

or a Third Party Building Automation System (BAS).

On--board DIP switches allow you to select your protocol

(and baud rate) of choice among the four most popular

protocols in use today: BACnet, Modbus, Johnson N2 and

LonWorks. See Fig. 51.

Carrier’s diagnostic display tools such as Field Assistant

BACview6 Handheld or Virtual BACview can be used

with the RTU--OPEN controller. Access is available via a

5--pin J12 access port.

SENSORY/ACCESSORY INSTALLATION

There are a variety of sensors and accessories available

for the RTU-OPEN. Some of these can be factory or field

installed, while others are only field installable. The

RTU-OPEN controller can also require connection to a

building network system or building zoning system. All

field control wiring that connects to the RTU-OPEN must

be routed through the raceway built into the corner post of

the unit or secured to the unit control box with electrical

conduit. The unit raceway provides the UL required

clearance between high and low-voltage wiring. Pass the

control wires through the hole provided in the corner post,

then feed the wires thorough the raceway to the

RTU-OPEN. Connect the wires to the removable Phoenix

connectors and then reconnect the connectors to the board.

See Fig. 51.

IMPORTANT

: Refer to the specific sensor or accessory

instructions for its proper installation and for rooftop unit

installation refer to base unit installation instructions and
the unit’s wiring diagrams.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury, death and/or equipment damage.
Disconnect all electrical power to the unit and use

appropriate Lock--out/Tagout procedures before wiring

the RTU--OPEN controller.

WARNING

ADDITIONAL RTU--OPEN INSTALLATION

AND TROUBLESHOOTING

Refer to the following manuals:

“Controls, Start--up,

Operation and Troubleshooting Instructions,”

and

“RTU

Open Installation and Start--up Guide”

for additional

installation, wiring and troubleshooting information for

the RTU--OPEN Controller. Have a copy of this manual

available at unit start--up.

50TC

Содержание 50TCQD17-D24

Страница 1: ...aintenance functions such as replacing filters Trained service personnel should perform all other service and maintenance operations When working on air conditioning equipment observe precautions in the literature tags and labels attached to the unit and other safety precautions that can apply Follow all safety codes Wear approved safety glasses and leather work gloves Use quenching cloth for unbr...

Страница 2: ...uld cause personal injury death and or equipment damage Puron R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on Puron refrigerant equipment WARNING WARNING FIRE EXPLOSION HAZARD Failure to follow this warning could result in death serious personal injury and or property damage Never use air or gases containing oxyge...

Страница 3: ...or dirt and debris Air Filters and Screens Each unit is equipped with return air filters If the unit has an economizer it also has an outside air screen If a manual outside air damper is added it also has an inlet air screen Each of these filters and screens will need periodic cleaning or replacement Return Air Filters EQUIPMENT DAMAGE HAZARD Failure to follow this CAUTION can result in premature ...

Страница 4: ...g a spring force tool such as Browning s Belt Tension Checker p n 1302546 or equivalent tool tension should be 6 lbs at a 5 8 in 1 6 cm deflection when measured at the centerline of the belt span This point is at the center of the belt when measuring the distance between the motor shaft and the blower shaft NOTE Without the spring tension tool place a straight edge across the belt surface at the p...

Страница 5: ...ed ductwork systems The pulley consists of a fixed flange side that faces the motor secured to the motor shaft and a movable flange side that can be rotated around the fixed flange side that increases or reduces the pitch diameter of this driver pulley See Fig 7 C07075 Fig 7 Supply Fan Pulley Adjustment As the pitch diameter is changed by adjusting the position of the movable flange the centerline...

Страница 6: ...ure to follow this warning could cause personal injury death and or equipment damage This system uses PuronR R410A refrigerant that operates at higher pressures than standard R 22 systems and other refrigerants No other refrigerant can be used in this system Gauge set hoses and recovery system must be designed to handle Puron refrigerant If unsure about equipment consult the equipment manufacturer...

Страница 7: ...ammable hypoallergenic non bacterial and a USDA accepted biodegradable agent that will not harm the coil or surrounding components such as electrical wiring painted metal surfaces or insulation Use of non recommended coil cleaners is strongly discouraged because coil and unit durability can be affected Clean coil as follows 1 Turn off unit power Use Lockout Tagout procedures on unit power switch 2...

Страница 8: ... deep into finned areas 8 Interior and exterior finned areas must be thoroughly cleaned 9 Finned surfaces should remain wet with cleaning solution for 10 minutes 10 Ensure surfaces are not allowed to dry before rinsing Reapply cleaner as needed to ensure 10 minute satur ation is achieved 11 Thoroughly rinse all surfaces with low velocity clean water using downward rinsing motion of water spray noz...

Страница 9: ...check valve which blocks further flow The hot gas exits the header through the tubes above the check valve and enters these coil circuits At the outlet of these desuperheating and condensing circuits the refrigerant enters the Accutrol tees from the coil end The refrigerant exits the tee at the side port and enters the liquid transfer header see Fig 14 The refrigerant moves through the liquid tran...

Страница 10: ...ch evaporator coil circuit path These metering devices are non adjustable Service requires replacing the entire liquid header assembly Check for possible blockage of one or more of these metering devices by creating a low load condition on the evaporator function coil and then observing the frosting pattern on the finned portion of the coil To check the indoor coil disconnect the supply fan signal...

Страница 11: ...refrigerant in the bulb pushing downward on the diaphragm which opens the valve using the push rods As long as this bulb and cap tube contain any liquid refrigerant this temperature is converted into suction pressure pushing downward on the diaphragm which tends to open the TXV valve through the push rods 2 The suction pressure at the outlet of the evaporator coil is transferred through the extern...

Страница 12: ...from vapor tube inside cabinet 6 Install the new TXV and avoid damaging the tubing or the valve when attaching the TXV to the distributor 7 Attach equalizer tube to suction line If coil has mechanical connection then use wrench and back up wrench to attach If coil has brazed connection use file or tubing cutters to remove mechanical flare nut from equalizer line Then use coupling to braze the equa...

Страница 13: ...out a dip tube invert the cylinder access valve on the bottom when removing liquid refrigerant Because Puron R 410A refrigerant is a blend it is strongly recommended that refrigerant always be removed from the cylinder as a liquid Add liquid refrigerant into the system in the discharge line If adding refrigerant into the suction line use a commercial metering expansion device at the gauge manifold...

Страница 14: ...e the Curve Remove Charge if Below the Curve 50HE501614 A C12025 Fig 21 Cooling Charging Chart 50TCQ D17 Circuit A OVERCHARGING UNIT INCREASES THE RISK OF NUISANCE HIGH PRESSURE SWITCH TRIPS CAUTION DO NOT OVERCHARGE UNIT 15 TON HEAT PUMP CHARGING CHART R410A REFRIGERANT COOLING MODE CIRCUIT B 20 40 60 80 100 120 140 150 200 250 300 350 400 450 500 550 600 Compressor Discharge Pressure psig Outdoo...

Страница 15: ... AND RECHARGE UNIT PER NAMEPLATE 50HE501616 A C12027 Fig 23 Cooling Charging Chart 50TCQ D24 Circuit A OVERCHARGING UNIT INCREASES THE RISK OF NUISANCE HIGH PRESSURE SWITCH TRIPS CAUTION DO NOT OVERCHARGE UNIT 20 TON HEAT PUMP CHARGING CHART R410A REFRIGERANT COOLING CODE CIRCUIT B 20 40 60 80 100 120 140 150 200 250 300 350 400 450 500 550 600 650 Compressor Discharge Pressure psig Outdoor Coil L...

Страница 16: ...ors it is important to be certain compressor is rotating in the proper direction To determine whether or not compressor is rotating in the proper direction 1 Connect service gauges to suction and discharge pres sure fittings 2 Energize the compressor 3 The suction pressure should drop and the discharge pressure should rise as is normal on any start up NOTE If the suction pressure does not drop and...

Страница 17: ...or indoor fan heating motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor Operates Continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat set too low cooling Reset thermostat Low refrigerant charge Locate leak repair and recharge Air in system Recover refrigerant evacuate system and rech...

Страница 18: ...keyhole slots and align with the gasket tighten the two screws until snug do not over tighten 4 Mount the weatherproof cover to the backing plate as shown in Fig 27 5 Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover 6 Check cover installation for full closing and latching TOP TOP TOP WET LOCATIONS WET LOCA TIONS COVER WHILE IN USE WEATHERPROOF BASEP...

Страница 19: ...n to clear the tripped condition The Fuse on the powered type The factory fuse is a Cooper Bussmann Fusetron T 15 non renewable screw in Edison base type plug fuse Using unit mounted convenience outlets Units with unit mounted convenience outlet circuits will often require that two disconnects be opened to de energize all power to the unit Treat all units as electrically energized until the conven...

Страница 20: ... is a snap action over temperature protection device that is imbedded in the motor windings It is a pilot circuit device that is wired into the unit s 24V control circuit When this switch reaches its trip set point it opens the 24V control circuit and causes all unit operation to stop This device resets automatically when the motor windings cool Do not bypass this switch to correct trouble Determi...

Страница 21: ...TL BRD 8 C Common 24Vac P3 2 CONTL BRD 4 DFT1 DI 24Vac DFT 1 to DFT 1 DFT 2 DI 24Vac DFT 2 to DFT 2 Outputs Point Name Type of I O Connection Pin Number Unit Connection Note IFO Fan On DO 24Vac P3 9 REHEAT 2 OF OD Fan On DO 24Vac OF OFR RVS1 DO 24Vac P3 7 to P3 5 Energize in COOL RVS2 DO 24Vac P3 6 to P3 4 Energize in COOL COMP 1 DO 24Vac P3 10 FPT REHEAT 6 COMP 2 DO 24Vac P3 8 REHEAT 8 HEAT 2 DO ...

Страница 22: ...the control repeats the continuous run period If DFT1 is closed the defrost cycle is initiated The defrost period will end when DFT1 opens indicating the outdoor coil has been cleared of frost and ice or a 10 minute elapsed period expires whichever comes first On unit sizes 08 and 09 two circuit designs DFT2 located on the bottom circuit of the outdoor coil controls the start and termination of th...

Страница 23: ...ar in design with heater frames holding open coil resistance wires strung through ceramic insulators line break limit switches and a control contactor One or two heater modules may be used in a unit Heater modules are installed in the Heater Section access panel located just below the Blower access panel Heater modules slide into the compartment on tracks along the bottom of the heater opening See...

Страница 24: ... 2 CRHEATER244A00 50TCQ D17 24 460 400 3 60 50 75 52 Vertical 2 CRHEATER245A00 50TCQ D17 24 575 3 60 25 Vertical 2 CRHEATER246A00 50TCQ D17 24 575 3 60 50 Vertical 2 CRHEATER247A00 50TCQ D17 24 575 3 60 75 Vertical 2 kW rated at 240 480 400 and 600 volts C09423 Fig 35 Typical Module Installation Table 9 Heater Model Number Bare Heater Model Number C R H E A T E R 0 0 1 A 0 0 Heater Sales Package P...

Страница 25: ...n inside the empty Single Point Box using UL approved connectors Safety Devices Electric heater applications use a combination of line break auto reset limit switches and a pilot circuit manual reset limit switch to protect the unit against over temperature situations Line break auto reset limit switches are mounted on the base plate of each heater module See Fig 34 These are accessed through the ...

Страница 26: ...Cover Cover Gasket ordering option Terminal Block Cover Conduit Support Plate Conduit Nuts supplied by installer Duct Smoke Sensor Controller C08208 Fig 39 Controller Assembly Controller The controller see Fig 39 includes a controller housing a printed circuit board and a clear plastic cover The controller can be connected to one or two compatible duct smoke sensors The clear plastic cover is secu...

Страница 27: ...ilter accessed through the lift off filter panel SUPPLY AIR SMOKE DETECTOR SENSOR C10325 Fig 41 Typical Supply Air Smoke Detector Sensor Location Return Air without Economizer The sampling tube is located across the return air opening on the unit base pan See Fig 42 The holes in the sampling tube face downward into the return air stream The sampling tube is connected by tubing to the return air se...

Страница 28: ...shut down all unit operations when a smoke condition is detected See Fig 46 Typical Smoke Detector System Wiring Highlight A JMP 3 is factory cut transferring unit control to smoke detector Highlight B Smoke detector NC contact set will open on smoke alarm condition de energizing the ORN conductor S For units with an economizer the sampling tube is integrated into the economizer housing but the co...

Страница 29: ...KOUT LOCATION FOR VERTICAL KNOCKOUT LOCATION FOR HORIZONTAL HORIZONTAL ASSEMBLY PICK UP TUBE BRACKET EMT TO SEAL TIGHT CONNECTOR SMOKE SAMPLING BOX EXPLODED DETAIL SCREW 2 C09685 Fig 45 Supply Air Smoke Detector Sensor Location ...

Страница 30: ...fy that the sensor s Alarm Light Emitting Diode LED turns on 3 Reset the sensor by holding the test magnet against the sensor housing for two seconds 4 Verify that the sensor s Alarm LED turns off Controller Alarm Test The controller alarm test checks the controller s ability to initiate and indicate an alarm state OPERATIONAL TEST NOTICE Failure to follow this NOTICE can result in an unnecessary ...

Страница 31: ...etector into the alarm state and activate all automatic alarm responses Before changing dirty sensor test operation disconnect all auxiliary equipment from the controller and notify the proper authorities if connected to a fire alarm system NOTICE Changing the Dirty Sensor Test By default sensor dirty test results are indicated by S The sensor s Dirty LED flashing S The controller s Trouble LED fl...

Страница 32: ...etector into the alarm state and activate all automatic alarm responses NOTICE Dirty Sensor Test Using an SD TRK4 1 Turn the key switch to the RESET TEST position for two seconds 2 Verify that the test reset station s Trouble LED flashes Table 11 Detector Indicators CONTROL OR INDICATOR DESCRIPTION Magnetic test reset switch Resets the sensor when it is in the alarm or trouble state Activates or t...

Страница 33: ... Condition Trips Manual reset is required to restore smoke detector systems to Normal operation For installations using two sensors the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition Check each sensor for Alarm or Trouble status as indicated by the LEDs Clear the condition that has generated the trip at this sensor Then reset the sensor by pressing an...

Страница 34: ... Networkr CCN devices This control is designed to allow users the access and ability to change factory defined settings thus expanding the function of the standard unit control board CCN service access tools include System Pilott Touch Pilott and Service Tool Standard tier display tools Navigatort and Scrolling Marquee are not suitable for use with latest PremierLink controller Version 2 x The Pre...

Страница 35: ...RTU OPEN must be routed through the raceway built into the corner post of the unit or secured to the unit control box with electrical conduit The unit raceway provides the UL required clearance between high and low voltage wiring Pass the control wires through the hole provided in the corner post then feed the wires thorough the raceway to the RTU OPEN Connect the wires to the removable Phoenix co...

Страница 36: ...36 C10818 Fig 51 RTU OPEN Control Module 50TCQ ...

Страница 37: ... PERSONAL INJURY AND ENVIRONMENTAL HAZARD Failure to follow this warning could result in personal injury or death Wear approved safety glasses and leather gloves when handling refrigerants Relieve pressure and recover all refrigerant before system repair or final unit disposal Keep torches and other ignition sources away from refrigerants and oils WARNING 3 Perform the following inspections a Insp...

Страница 38: ...energize to the compressor Check pressures The suction and discharge pressure levels should now move to their normal start up levels NOTE When the compressor is rotating in the wrong direction the unit will make an elevated level of noise and will not provide cooling Refrigerant Service Ports Each unit system has two 1 4 SAE flare with check valves service ports one on the suction line and one on ...

Страница 39: ...properly connected and securely tightened 2 At the unit check fan and system controls for proper operation 3 At the unit check electrical system and connections of any optional electric reheat coil 4 Ensure all area around the unit is clear of construction dirt and debris 5 Ensure final filters are installed in the unit Dust and debris can adversely affect system operation 6 Verify the PremierLink...

Страница 40: ...tions Outdoor Indoor Hail Guard A Al Cu Al Cu B Precoat Al Cu Al Cu C E coat Al Cu Al Cu D E coat Al Cu E coat Al Cu E Cu Cu Al Cu F Cu Cu Cu Cu M Al Cu Al Cu Louvered Hail Guards N Precoat Al Cu Al Cu Louvered Hail Guards P E coat Al Cu Al Cu Louvered Hail Guards Q E coat Al Cu E coat Al Cu Louvered Hail Guards R Cu Cu Al Cu Louvered Hail Guards S Cu Cu Cu Cu Louvered Hail Guards Base unit contro...

Страница 41: ...ize 56 56 Fan Qty Type 2 Centrifugal 2 Centrifugal Fan Diameter in 15 x 15 15 x 15 Medium Static Motor Qty Drive type 1 Belt n a Max BHP 3 3 n a RPM range 679 863 n a Motor frame size 56 n a Fan Qty Type 2 Centrifugal n a Fan Diameter in 15 x 15 n a High Static Motor Qty Drive type 1 Belt n a Max BHP 4 9 n a RPM range 826 1029 n a Motor frame size 56 n a Fan Qty Type 2 Centrifugal n a Fan Diameter...

Страница 42: ...a 1 Belt Max BHP n a 6 5 6 9 7 0 8 3 RPM range n a 835 1021 Motor frame size n a 184T Fan Qty Type n a 2 Centrifugal Fan Diameter in n a 15 x 15 High Static High Eff Motor Qty Drive type n a 1 Belt Max BHP n a 10 5 11 9 11 9 11 0 RPM range n a 941 1176 Motor frame size n a 213T Fan Qty Type n a 2 Centrifugal Fan Diameter in n a 15 x 15 Cond Coil Circuit A Coil type RTPF RTPF Coil Length in 70 82 C...

Страница 43: ...9 6 45 6 057A00 057A00 057A00 057A00 287 278A00 74 4 68 3 057A00 057A00 057A00 057A00 50TCQ 24 208 203 3 60 STD 279 A00 25 0 18 8 23 0 056A00 056A00 056A00 056A00 280 A00 50 0 37 6 45 9 056A00 056A00 056A00 056A00 281 A00 75 0 56 3 68 9 056A00 056A00 056A00 056A00 MED High Efficiency 279 270A00 25 0 18 8 23 0 056A00 056A00 056A00 056A00 280 271A00 50 0 37 6 45 9 056A00 056A00 056A00 056A00 281 272...

Страница 44: ...A00 057A00 HIGH 285 276A00 24 8 22 8 286 277A00 49 6 45 6 057A00 057A00 057A00 057A00 287 278A00 74 4 68 3 057A00 057A00 057A00 057A00 50TCQ 24 208 203 3 60 STD 279 A00 25 0 18 8 23 0 056A00 056A00 056A00 056A00 280 A00 50 0 37 6 45 9 056A00 056A00 056A00 056A00 281 A00 75 0 56 3 68 9 056A00 056A00 056A00 056A00 MED 279 270A00 25 0 18 8 23 0 056A00 056A00 056A00 056A00 280 271A00 50 0 37 6 45 9 05...

Страница 45: ...50HE502048 B 460 3 60 50HE500937 G 50HE502045 B 575 3 60 50HE500937 G 50HE502045 B All RTU OPEN 50HE501687 B 50HE500751 J All PremierLink 48TM500891 F 50HE500751 J NOTE Component arrangement on Control Legend on Power Schematic PremierLink and RTU OPEN control labels overlay a portion of the base unit control label The base unit label drawing and the control option drawing are required to provide ...

Страница 46: ...46 APPENDIX IV WIRING DIAGRAMS cont C150373 Fig 52 50TCQ D17 Power Wiring Diagram 208 230 3 60 ...

Страница 47: ...47 APPENDIX IV WIRING DIAGRAMS cont C12399 Fig 53 50TCQ D17 Power Wiring Diagram 460 3 60 575 3 60 ...

Страница 48: ...48 APPENDIX IV WIRING DIAGRAMS cont C12686 Fig 54 50TCQ D24 Power Wiring Diagram 208 230 3 60 ...

Страница 49: ...49 APPENDIX IV WIRING DIAGRAMS cont C12401 Fig 55 50TCQ D24 Power Wiring Diagram 460 3 60 575 3 60 ...

Страница 50: ...50 APPENDIX IV WIRING DIAGRAMS cont C160004 Fig 56 50TCQ D17 D24 Control Wiring Diagram 208 3 60 460 3 60 575 3 60 ...

Страница 51: ...51 APPENDIX IV WIRING DIAGRAMS cont C160005 Fig 57 RTU OPEN Control Diagram ...

Страница 52: ...52 APPENDIX IV WIRING DIAGRAMS cont 50HE500891 F 50HE500751 J Fig 58 PremierLinktWiring Diagram ...

Страница 53: ...arrier s motors please see the Application Data section of this book Table 18 Economizer Vertical and Horizontal Duct Configuration Model Sizes 17 and 24 CFM 4500 5000 5500 6000 6500 7000 7500 8000 0 047 0 052 0 057 0 062 0 067 0 072 0 077 0 082 Model Sizes 17 and 24 CFM 8500 9000 9500 10000 10500 11000 11500 12000 12500 0 088 0 093 0 098 0 103 0 109 0 114 0 119 0 125 0 131 Table 19 Electric Heate...

Страница 54: ... and Drive 514 680 RPM Max BHP 2 9 Medium Static Motor and Drive 679 863 RPM Max BHP 3 7 High Static Motor and Drive 826 1009 RPM Max BHP 4 9 Outside operating range Boldface requires alternate static drive package ITALIC requires high static drive package with different motor pulley Table 21 50TCQD17 15 TON HORIZONTAL SUPPLY RETURN CFM Available External Static Pressure in wg 0 2 0 4 0 6 0 8 1 0 ...

Страница 55: ... Boldface requires alternate static drive package ITALIC requires high static drive package with different motor pulley Table 23 50TCQD24 20 TON HORIZONTAL SUPPLY RETURN CFM Available External Static Pressure in wg 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 6000 580 2 04 643 2 61 702 3 22 756 3 88 806 4 58 6500 617 2 49 677 3 09 733 3 74 785 4 44 833 5 17 7000 656 3 01 712 3 65 76...

Страница 56: ...6 1153 1129 1106 1082 1059 1035 1012 988 965 941 NOTE Do not adjust pulley further than 5 turns open Factory settings Table 25 PULLEY ADJUSTMENT Horizontal airflow units UNIT MOTOR DRIVE COMBO MOTOR PULLEY TURNS OPEN 0 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 17 Standard Static 680 663 647 630 614 597 580 564 547 531 514 Medium Static 780 763 747 730 714 697 680 664 647 631 614 High Static 912 89...

Страница 57: ...57 APPENDIX VI MOTORMASTER SENSOR LOCATIONS SENSOR LOCATION C12035 Fig 59 50TCQD17 and 50TCQD24 Motormaster Sensor Location ...

Страница 58: ...p S 7310 W Morris St S Indianapolis IN 46231 Edition Date 02 16 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 50TCQ 17 24 01SM Replaces 50TCQ 02SM ...

Страница 59: ...ION IN HOUSING ORIFICE AND SETSCREW TIGHTNESS j CHECK TO ENSURE THAT ELECTRICAL WIRING IS NOT IN CONTACT WITH REFRIGERANT LINES OR SHARP METAL EDGES j CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS III START UP ELECTRICAL SUPPLY VOLTAGE L1 L2 L2 L3 L3 L1 CIRCUIT 1 COMPRESSOR AMPS L1 L2 L3 CIRCUIT 2 COMPRESSOR AMPS L1 L2 L3 INDOOR FAN AMPS L1 L2 L3 OUTDOOR FAN AMPS NO 1 NO 2 ...

Страница 60: ...p S 7310 W Morris St S Indianapolis IN 46231 Edition Date 02 16 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 50TCQ 17 24 01SM Replaces 50TCQ 02SM ...

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