McQuay M5RT 90 BR Technical Manual
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McQuay M5RT 90 BR Technical Manual

R410a rooftop packaged b series
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R410A Rooftop Packaged
B Series
Models: M5RT 90 BR
M5RT 120 BR
M5RT 150 BR
M5RT 180 BR
M5RT 210 BR
M5RT 250 BR
Economizer Kit (Option)
EC 90 B
EC 120 B
EC 150 B
EC 180 B
EC 210 B
EC 250 B
Catalog
M5RT-B-2011

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Summary of Contents for McQuay M5RT 90 BR

  • Page 1 Catalog M5RT-B-2011 R410A Rooftop Packaged B Series Models: M5RT 90 BR M5RT 120 BR M5RT 150 BR M5RT 180 BR M5RT 210 BR M5RT 250 BR Economizer Kit (Option) EC 90 B EC 120 B EC 150 B EC 180 B...

  • Page 2: Table Of Contents

    © 2011 McQuay International. All rights reserved throughout the world. Bulletin illustrations cover the general appearance of McQuay International products at the time of publication. We reserve the right to change design and construction specifications at any time without notice.

  • Page 3: Nomenclature

    Nomenclature RT 90 B R – F E AA Product Specification Variation Brand A : First Issue M : McQuay Optional Specification Refrigerant E : Economizer “ ” : R22 : R407C : R410A Product Type Electrical Characteristics F : 50Hz / 3Ph / 380-415V...

  • Page 4: Product Line-Up

    Product Line-up M5RT-BR Series Heat pump Classification 90BR FEAA 120BR FEAA 150BR FEAA M5RT 180BR FEAA 210BR FEAA 250BR FEAA * Optional accessories (field install)

  • Page 5: Features

    General Specification • Package Unit: McQuay’s new range of rooftop packaged units has been developed specifically to suit commercial applications and are designed to be easy to install, requiring only ducting (and associated fittings), power/ control wiring and drain piping. Along with the light grey colour, the flat top and compact design gives an aesthetic and neat appearance when installed in line of sight.
  • Page 6 • Evaporator Evaporator coils are manufactured from seamless inner grooved copper tubes mechanically bonded to aluminium fins to ensure optimum heat transfer. All coils are tested against by Nitrogen holding at 609psig and highly precise Helium leak test at 235psig. ALL standard coils are 3-4 rows / 14-16 FPI, 3/8”...
  • Page 7 Economizer Kit Features Introduction Economizer kit is an accessory provided by the factory, but requires field installation. It is also designed to cater for horizontal or vertical down throw air discharge orientation. Economizer kit is compatible for R410A rooftop models. If you are unsure whether this kit can be used with your particular unit, please contact authorized service division.

  • Page 8: Application Information

    Application Information Operating Range Ensure the operating temperature is within the allowable range, as stated in diagram below: Cooling Heating CAUTION The use of the air conditioner outside the range of working temperature and humidity can result in serious failure. Indoor WB temperature (°C) Indoor DB temperature (°C) The applicable operating range for unit with economizer feature same like normal unit.

  • Page 9: Refrigerant Circuit Diagrams

    Refrigerant Circuit Diagrams Model: M5RT90/120/150/180/210/250BR Item Part’s Model/Part No/Size Compressor High Pressure Switch Access Valve 4 - Ways Valve Filter Drier Electronic Expansion Valve Strainer Accumulator Low Pressure Switch Solenoid Valve Bypass Capillary Tube Indoor Heat Exchanger Outdoor Heat Exchanger Check Valve 1 Check Valve 2 Compensator Cooling Operation...
  • Page 10 Installation Installation Clearance Refer diagram below for the space required around the unit. Note that:- ● All dimensions shown are in mm. ● All space value shown are minimum clearance required for the unit. ● Unit shown in the diagram is M5RT90BR. Other models shall follow the same clearance. Blower &...

  • Page 11: Unit Conversion

    Unit Conversion In the case of converting standard unit to downthrow unit, follow the steps as stated below: M5RT 90,120, 150, 180, 210 & 250 BR ► ► ► ▼ ▼ ▼ Remove screws at both sides Detached blower Remove the Remove the Pulley Belt Detached the...

  • Page 12: Wire Connection

    Wire Connection • All electrical work must be carried out by qualified electrician and accordance with local supply requirement and associate regulation. Method for connecting electric wire Before connecting the wire, consult the electric power company of jurisdiction. (1) The entire wiring diagram of unit Unit Power supply Main switch/fuse...

  • Page 13: Control Operation Guide

    Note: A main switch or other means for disconnection, having a contact separation in all poles, must be incorporated in fixed wiring in accordance with local and national legislation. • The unit is to be wired directly from an electrical distribution board either by a circuit breaker (preferred) or HRC fuse. •...
  • Page 14 b) LED Display (Controller Main Board) The LED will blink when power up the unit. c) LCD Display (Remote Controller) During normal operations, the LCD displays compressor on/off status, mode, set temperature and so on. Refer to Operating Manual for the details of operation guide. The LCD will display the main screen upon power-up.
  • Page 15 (1) For thermostat control, the outputs are summarized as below: Output 1* Output 2* Description of operation OFF mode FAN mode Output Status COOL mode HEAT mode Output Output status Description of operation System defrosting Defrost Normal Alarm occurred Alarm No alarm occurred * Output 1 = ON/OFF * Output 2 = COOL/HEAT...
  • Page 16 (iv) Auxilliary Electrical Heater Output (HTR1 and HTR2) • There are two output pins (HTR1 and HTR2) on controller main board, which are used to energize the heater contactor. The contactor must be selected accordingly to avoid any safety issue(s). •...
  • Page 17 Shunt jumper 1, 2 and 3: Minimum fresh air opening setting in fan mode, where by the selection of different pins will give different opening setting. Let name the shunt jumper 1 = JP1, shunt jumper 2 = JP2 and shunt jumper 3 = JP3; refer the table below for different fresh air opening selection:- Fresh air opening (%) 0 (default) Legend: OFF = Short pin 2 and pin 3...

  • Page 18: Sound Data

    Sound Data Outdoor Noise Level 1/1 Octave Sound Pressure Level (dB, ref 20µPa) Overall Noise Criteria Model (dBA) 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz (NC) M5RT90BR M5RT120BR M5RT150BR M5RT180BR M5RT210BR M5RT250BR 0152213B 1/1 Octave Sound Power Level (dB, ref 1pW) Model Overall (dBA)
  • Page 19 M5RT90BR NC CURVES NC70 NC65 NC60 NC55 NC50 NC45 NC40 NC35 NC30 NC25 NC20 1000 2000 4000 8000 Octave-band frequency (Hz) 0352213B90 M5RT120BR NC CURVES NC70 NC65 NC60 NC55 NC50 NC45 NC40 NC35 NC30 NC25 NC20 1000 2000 4000 8000 Octave-band frequency (Hz) 0352213B120...
  • Page 20 M5RT150BR NC CURVES NC70 NC65 NC60 NC55 NC50 NC45 NC40 NC35 NC30 NC25 NC20 1000 2000 4000 8000 Octave-band frequency (Hz) 0352213B150 M5RT180BR NC CURVES NC70 NC65 NC60 NC55 NC50 NC45 NC40 NC35 NC30 NC25 NC20 1000 2000 8000 4000 Octave-band frequency (Hz) 0352213B180...
  • Page 21 M5RT210BR NC CURVES 1000 2000 4000 8000 Octave-band frequency (Hz) 0352213B210 M5RT250BR NC CURVES 1000 2000 8000 4000 Octave-band frequency (Hz) 0352213B250...

  • Page 22: Selection Process

    Selection Process M5RT90BR...
  • Page 23 Example for selection process: The following data are the rated design points for model R410A rooftop M5RT90BR: Airflow Rate = 3300 cfm External Static Pressure (ESP) = 150Pa Blower RPM = 657 To increase the ESP to 200Pa, but maintain the airflow rate at 3300cfm, please follow the steps below: Step 1: Selection of new desired point.
  • Page 24 Motor Variable Pitch Pulley Data: Date is provided according to factory fitted standard motor and blower. The range of airflow & ESP must be worked within blower curve boundary. External Static Pressure (ESP) Model 90/120/150/180/210/250 = 100Pa Models 0.25 0.75 1.25 1.75 2.25 2.75 3.25 3.75 R410A...
  • Page 25 V-Belt Dimensions (Note: All dimensions are in mm) Side flow Down flow Pulley center Pulley center Models R410A V-belt V-belt Quantity distance (mm) distance(mm) Section Top Width Thickness Angle (º) Rooftop length length (pcs) (M5RT-BR) Nominal Nominal 12.7 1657 1382 12.7 1782 1357...

  • Page 26: Blower Curve

    Blower Curves M5RT90BR 1.5 kW 1.1 kW Standard Point 0.75 kW Internal Static Pressure 2600 2800 3000 3200 3400 3600 3800 4000 1500 1300 1400 1700 1600 1800 Air Flow Note : The shaded area indicates the operating range of variable picth pulley which is used with standard motor(factory fitted).
  • Page 27 M5RT120BR 1000 2.2 kW 1.5 kW 1.1 kW Standard Point Internal Static Pressure 3200 3500 3800 4100 4400 4700 5000 5300 1600 1700 1900 2200 1800 2000 2300 2100 2400 2500 Air Flow Note : The shaded area indicates the operating range of variable picth pulley which is used with standard motor ( factory fitted ) .
  • Page 28 M5RT150BR 3.0 kW 1000 2.2 kW Standard Point 1.5 kW Internal Static Pressure 4200 4700 5200 5700 6200 6700 7200 2200 2400 3200 3400 2000 2600 2800 3000 Air Flow Note : The shaded area indicates the operating range of variable picth pulley which is used with standard motor ( factory fitted ) .
  • Page 29 M5RT180BR 3.0 kW 3.7 kW 1000 2.2 kW Standard Point Internal Static Pressure 5300 5800 6300 6800 7300 7800 8300 2500 2700 2900 3100 3300 3500 3700 3900 Air Flow Note : The shaded area indicates the operating range of variable picth pulley which is used with standard motor ( factory fitted ) .
  • Page 30 M5RT210BR 5.5 kW 3.7 kW Standard 3.0 kW Point Internal Static Pressure 5500 6000 6500 7000 7500 8000 8500 9000 9500 CFM 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 AIR FLOW Note : The shaded area indicates the operating range of variable picth pulley which is used with standard motor ( factory fitted ) .
  • Page 31 M5RT250BR 7.5 kW 1000 5.5 kW Standard 3.7 kW Point Internal Static Pressure 6500 7000 7500 8000 8500 9000 9500 10000 10500 CFM 3100 3300 3500 3700 3900 4100 4300 4500 4700 4900 A IR FLOW Note : The shaded area indicates the operating range of variable picth pulley which is used with standard motor ( factory fitted ) .

  • Page 32: Engineering And Physical Data

    Engineering & Physical Data Engineering Data - Heat Pump (R410A) M5RT180BR M5RT90BR M5RT120BR M5RT150BR MODEL Btu/h 93300 121400 152600 190000 NOMINAL COOLING CAPACITY 27340 35580 44720 55690 Btu/h 85000 118700 142600 184000 NOMINAL HEATING CAPACITY 24910 34790 41790 53930 8140 10780 13040 NOMINAL TOTAL INPUT POWER (COOLING)
  • Page 33 Engineering Data - Heat Pump (R410A) MODEL M5RT250BR M5RT210BR Btu/h 247700 228000 NOMINAL COOLING CAPACITY 72600 66820 Btu/h 210500 237500 NOMINAL HEATING CAPACITY 61690 69610 NOMINAL TOTAL INPUT POWER (COOLING) 19650 21610 NOMINAL TOTAL INPUT POWER (HEATING) 21420 18580 NOMINAL RUNNING CURRENT (COOLING) 39.0 33.8 NOMINAL RUNNING CURRENT (HEATING)
  • Page 34 Safety Devices- Heatpump (R410a) MODEL M5RT90BR M5RT120BR TYPE NC, Auto Reset HIGH PRESSURE SWITCH OPEN kPa/psi 4137 / 600 CLOSE kPa/psi 3309 / 480 TYPE NC, Auto Reset SAFETY DEVICE OPEN kPa/psi LOW PRESSURE SWITCH 124 / 18 CLOSE kPa/psi 193 / 28 PHASE SEQUENCER DISCHARGE THERMOSTAT SETTING...
  • Page 35 ENGINEERING DATA - ECONOMIZER MODEL EC90B-AA EC120B-AA EC150B-AA EC180B-AA CORRESPONDING ROOF TOP UNIT M5RT90BR-FEAA M5RT120BR-FEAA M5RT150BR-FEAA M5RT180BR-FEAA POWER SOURCE L/S / CFM NOMINAL AIR FLOW 1560 3300 2030 4300 2670 5650 3160 6700 HEIGHT PACKAGING DIMENSION WIDTH 1440 1430 1430 1458 DEPTH 1144...
  • Page 36 ENGINEERING DATA - ECONOMIZER MODEL EC210B-AA EC250B-AA CORRESPONDING ROOF TOP UNIT M5RT210BR-FEAA M5RT250BR-FEAA POWER SOURCE L/S / CFM NOMINAL AIR FLOW 3445 7300 3917 8300 HEIGHT WIDTH 1458 1458 PACKAGING DIMENSION DEPTH 1564 1564 KG/LB NET MASS KG/LB GROSS MASS BRAND BELIMO BELIMO...

  • Page 37: Performance Data

    Performance Data Calculation Steps Interpolation method can be used to get the total capacity, TC and sensible capacity, SC and power input, PI at those temperatures which are not stated out in the table. Extrapolation method are not allowed to be used to get the TC, SC and PI.
  • Page 38 Details: Step: To obtain the Total capacity and Sensible capacity and Power input for (a) Indoor Condition: 25˚C DB, 16˚C WB Outdoor Condition: 35°C DB Outdoor DB, ˚C Indoor WB Indoor DB ˚C ˚C TC (kW) SHC (kW) PI (kW) 41.41 35.59 12.81...
  • Page 39 (b) Indoor Condition: 25˚C DB, 16˚C WB Outdoor Condition: 40°C DB Outdoor DB, ˚C Indoor WB Indoor DB ˚C ˚C TC (kW) SHC (kW) PI (kW) 38.59 33.52 13.91 ....... 40.74 39.20 14.06 Total capacity, TC Interpolation Method: 27º C – 24º C 40.74kW –...
  • Page 40 Step: To obtain the Total capacity, Sensible capacity and Power Input for (a) Indoor Condition: 25°C DB, 17°C WB Outdoor Condition: 35°C DB Outdoor DB,˚C Indoor WB Indoor DB ˚C ˚C TC (kW) SHC (kW) PI (kW) 42.10 37.60 12.85 ......
  • Page 41 (b) Indoor Condition: 25°C DB, 17°C WB Outdoor Condition: 40°C DB Outdoor DB,˚C Indoor WB Indoor DB ˚C ˚C TC (kW) SHC (kW) PI (kW) 39.31 35.41 13.96 ......41.46 29.99 14.13 Total capacity, TC Interpolation Method: 19ºC – 16ºC 41.46kW –...
  • Page 42 Step: To obtain the Total capacity and Sensible capacity for (a) Indoor Condition: 25°C DB, 17°C WB Outdoor Condition: 37°C DB Outdoor DB, ˚C Indoor WB Indoor DB ˚C ˚C (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) ..42.92 35.61 12.91...
  • Page 43 Performance Adjustment Performance of the unit will derate when it operates with fresh air mode and this condition depends on user’s selection. Before installation, it is recommended to check the correction factor table (table 1) below in order to do a correct design selection.
  • Page 44 Pressure drop in economizer kit from table 2 refers to initial resistance. An air filter that is installed in the rain hood of economizer will expose to outdoor environment and easily becomes dirty. Regular service is required for this filter (recommended at least once every two weeks). The final resistance shall not exceed the recommended value in table 3 below.
  • Page 45 Performance Table R410A Model Cooling Mode Model: M5RT90BR Outdoor temperature AFR (CFM) ° 9 ° 5 ° 0 35°C 40°C 46°C 21°C 26.92 17.79 6.55 25.90 17.33 6.93 25.31 17.19 7.46 24.12 16.64 7.91 22.42 15.75 8.60 20.86 15.04 9.52 24°C 27.02 20.73 6.56 26.00 20.27...
  • Page 46 Model: M5RT150BR Outdoor temperature ° 9 ° 5 ° 0 35°C 40°C 46°C (CFM) 21°C 44.03 29.82 10.49 42.37 29.06 11.10 41.41 28.82 11.95 39.46 27.89 12.68 36.67 26.40 13.77 34.12 25.22 15.25 24°C 44.20 34.76 10.50 42.53 33.98 11.11 41.57 33.82 11.96...
  • Page 47 Model: M5RT210BR Outdoor temperature 19°C ° 5 ° 0 ° 5 ° 0 46°C (CFM) 21°C 65.79 42.92 15.81 63.31 41.83 16.73 61.87 41.49 18.01 58.96 40.15 19.11 54.79 38.00 20.75 50.98 36.30 22.98 24°C 66.05 50.03 15.82 63.54 48.91 16.74 62.11 48.69...
  • Page 48 Heating Mode Model: M5RT90BR Outdoor WB, ° C Indoor DB, °C TC (kW) PI (kW) TC (kW) PI (kW) TC (kW) PI (kW) TC (kW) PI (kW) TC (kW) PI (kW) 17.71 5.41 24.99 6.49 28.96 7.08 30.95 7.38 32.93 7.67 17.23 5.64 24.96...
  • Page 49 Model: M5RT210BR Outdoor WB, ° C Indoor DB, °C TC (kW) PI (kW) TC (kW) PI (kW) TC (kW) PI (kW) TC (kW) PI (kW) TC (kW) PI (kW) 43.85 14.19 61.88 17.03 71.71 18.58 76.63 19.36 81.55 20.13 42.61 14.83 61.81 17.91...

  • Page 50: Outlines & Dimensions

    Outline And Dimension Model: M5RT90BR All dimensions are in mm 1275 2063 SUPPLY AIR RETURN 2181 DRAIN PIPE Ø 1" FOR HORIZONTAL DISCHARGE Back view of the unit: 1638 VERTICAL RETURN VERTICAL SUPPLY 2131 FOR VERTICAL DISCHARGE CENTER OF GRAVITY 70014106717...
  • Page 51 Model: M5RT90BR (With Economizer Option) All dimensions are in mm 2063 RETURN AIR SUPPLY AIR OUTDOOR AIR ø 2181 DRAIN PIPE 1" FOR HORIZONTAL DISCHARGE OUTDOOR AIR Back view of the unit: 1638 VERTICAL RETURN AIR VERTICAL SUPPLY 2131 FOR VERTICAL DISCHARGE 70014112026...
  • Page 52 Model: M5RT120BR All dimensions are in mm 2180 1410 2113 SUPPLY AIR RETURN ø DRAIN PIPE 1" 2230 1161 1070 FOR HORIZONTAL DISCHARGE Back view of the unit: 2209 VERTICAL RETURN CONTROL VERTICAL SUPPLY CENTER OF GRAVITY FOR VERTICAL DISCHARGE 70014107020...
  • Page 53 Model: M5RT120BR (With Economizer Option) All dimensions are in mm 2180 2113 SUPPLY AIR RETURN AIR OUTDOOR AIR 2230 ø DRAIN PIPE 1" 1161 1069 FOR HORIZONTAL DISCHARGE OUTDOOR AIR Back view of the unit: 2209 VERTICAL RETURN AIR CONTROL VERTICAL SUPPLY AIR FOR VERTICAL DISCHARGE 70014112027...
  • Page 54 Model: M5RT150BR All dimensions are in mm 2180 1385 2113 SUPPLY AIR RETURN ø DRAIN PIPE 1" 2230 1161 1069 FOR HORIZONTAL DISCHARGE Back view of the unit: 2209 VERTICAL RETURN CONTROL VERTICAL SUPPLY CENTER OF GRAVITY FOR VERTICAL DISCHARGE 70014107156...
  • Page 55 Model: M5RT150BR (With Economizer Option) All dimensions are in mm 2180 2113 SUPPLY AIR RETURN AIR OUTDOOR AIR 2230 ø DRAIN PIPE 1" 1161 1069 FOR HORIZONTAL DISCHARGE OUTDOOR AIR Back view of the unit: 2209 VERTICAL RETURN AIR CONTROL VERTICAL SUPPLY FOR VERTICAL DISCHARGE 70014112028...
  • Page 56 Model: M5RT180/210/250BR All dimensions are in mm 2739 1735 2670 RETURN SUPPLY AIR 2789 ø DRAIN PIPE 1" 1162 1069 FOR HORIZONTAL DISCHARGE Back view of the unit: 2209 VERTICAL RETURN CONTROL VERTICAL SUPPLY AIR FOR VERTICAL DISCHARGE Model (M5RT) 1048 1302 1454 1176...
  • Page 57 Model: M5RT180BR (With Economizer Option) All dimensions are in mm 2739 2670 SUPPLY AIR RETURN AIR OUTDOOR AIR ø 2789 DRAIN PIPE 1" 1069 1161 FOR HORIZONTAL DISCHARGE OUTDOOR AIR Back view of the unit: 2209 VERTICAL RETURN AIR CONTROL VERTICAL SUPPLY FOR VERTICAL DISCHARGE 70014112418...
  • Page 58 Model: M5RT210BR (With Economizer Option) All dimensions are in mm 2739 2670 SUPPLY AIR RETURN AIR OUTDOOR AIR 2789 ø DRAIN PIPE 1" 1161 1069 FOR HORIZONTAL DISCHARGE OUTDOOR AIR Back view of the unit: 2209 VERTICAL RETURN AIR CONTROL VERTICAL SUPPLY FOR VERTICAL DISCHARGE 70014112419...
  • Page 59 Model: M5RT250BR (With Economizer Option) All dimensions are in mm 2739 1140 2670 SUPPLY AIR OUTDOOR AIR RETURN AIR ø 2789 DRAIN PIPE 1" 1069 1161 FOR HORIZONTAL DISCHARGE Back view of the unit: OUTDOOR AIR 2209 VERTICAL RETURN AIR CONTROL VERTICAL SUPPLY FOR VERTICAL DISCHARGE 70014112420...
  • Page 60 Control Module Of Unit M5RT90BR No. Item Description Controller Main Board EXV Controller Board Capacitor Contactor Phase Protector Relay Terminal Block Fuse Transformer Terminal Block Cover Economizer Controller Board Control Module Of Unit M5RT120/150/180BR No. Item Description Controller Main Board EXV Controller Board Capacitor Contactor Phase Protector Relay Terminal Block Fuse Transformer...
  • Page 61 Control Module Of Unit M5RT210/250BR No. Item Description Controller Main Board EXV Controller Board Capacitor Contactor Phase Protector Relay Terminal Block Fuse Transformer Terminal Block Cover Economizer Controller Board...

  • Page 62: Wiring Diagrams

    Wiring Diagrams Model: M5RT90BR 08024106498E...
  • Page 63 Model: M5RT90BR (With Economizer Option) 08024110270B...
  • Page 64 Model: M5RT120BR 08024106505F...
  • Page 65 Model: M5RT150BR 08024106505F...
  • Page 66 Model: M5RT180BR 08024106505F...
  • Page 67 Model: M5RT120/150/180BR (With Economizer Option) 08024110274B...
  • Page 68 Model: M5RT210/250BR 08024107686C...
  • Page 69 Model: M5RT210/250BR (With Economizer Option) 08024110292B...

  • Page 70: Service And Maintainance

    Servicing & Maintenance Service Of The Filter • Remove any dust adhering to the filter by using a vaccum cleaner or wash in lukewarm water (below 40°C) with neutral cleaning detergent. • Rinse the filter well and dry before placing it back onto the unit. •...

  • Page 71: Vacuuming And Charging

    Vacuuming And Charging The rooftop package units are factory pre-charged with sufficient refrigerant. However, there may be a need for charge recovery during service and maintenance works. Therefore, some precautions must be taken to ensure optimum and trouble-free system operation: (i) The system should be throughly vacuumed to ensure no incompressible gas and moisture in the system.

  • Page 72: Troubleshooting

    Troubleshooting For any enquiries on spare part please contact your authorized dealer. If any malfunction of the air conditioner unit is noted, check the following fault conditions and causes for some simple troubleshooting tips. Problem Causes Action Unit does not run. Power failure.
  • Page 73 Error Message Possible causes Action Communication wires not connected Connect correctly and operate again. 1. MB & economizer communication fail Avoid from noise source / External noise / interference add ferrite core. Main PCB / Economizer PCB faulty Replace main PCB / economizer PCB. Replace main PCB and operate again.

  • Page 74: Part List

    Error Message Possible causes Action Motor internal over current protection faulty Winding resistance out of spec Replace indoor fan motor. 12. Indoor fan overload Fan motor short body Main PCB faulty Replace main PCB 13. Return air sensor short / open Faulty Sensor / Poor sensor connection Connect sensor correctly / replace sensor.

  • Page 75: Exploded View And Parts List

    Exploded View And Parts List MODEL: M5RT90BR 70024107445 No Description No Description Structure, Base Right Ins, Drain Pan 2 T10x1091x52 (87577) Support, Structure, Base Ins, Drain Pan 3 T10x1091x155 (87577) Assy, Structure Base Back Ins, Drain Pan 4 T3x175x40 (87577) Assy, Structure Base Front Ins.
  • Page 76 No Description No Description Cover, Filter Pulley, 1 SPZ 160/1610 Ins., Cover Filter (T10.0x958.0x72.0) Pulley, Bush 1610/25 Assy, Filter Rail Center Belt, V SPZ 1450 Assy, Return Supply Separator Cover Top Panel Ins,s'rator,rtn Sply1 T10.0x1095x49 Ins, Cover Top Panel (T3x1636x40) Ins,s'rator,rtn Sply2 T10x900x20 (87535) Panel, Service L/R Ins,s'rator,rtn Sply3 T10x1035x15(87535)
  • Page 77 MODEL: M5RT90BR (With Economizer Kit) 70024112023 No Description No Description Unit M5RT90BR Assy, Ins. Rain Hood L Flange Back Support Assy, Ins. Rain Hood R Support, Damper Down Throw Top Assy, Ins. Rain Hood Top AL Associate, Damper OA 710x511.6 Air Hood, Top 2 Al Associate, Damper RA 510x712.2 Assy, Ins.
  • Page 78 MODEL: M5RT120BR 70024107446 No Description No Description Assy Tubing Assy, Pillar Rear Centre Right Assy, Base Pan Main Ins, Rear Center Right Assy, Separator Assy, Pillar Rear Centre Left Ins, Separator 3 Ins, Pillar Rear Center L Ins, Separator 3b Assy, Separator OD Ins, Separator 3c Assy, Separator OD.
  • Page 79 No Description No Description ID Channel, Top Right Assy, Main Isolator Ins, ID Top Channel 1 Plate, Cover Isolator Ins, ID Top Channel 2 Coil Guard, Side Ins, ID Top Channel 3 Coil Guard, Back (Right) Ins, ID Top Channel 4 Coil Guard, Back (Left) Panel, Side Front L/R Air Filter,saranet 1126x385 5RT120BR...
  • Page 80 MODEL: M5RT120BR (With Economizer Kit) 70024112024 No Description No Description Unit M5RT120BR Handling Handle Assy, Ins. Rain Hood Top Assy, Ins. Side Panel Air Hood, Top 2 Support, Damper Down Throw Top Assy, Ins. Rain Hood R AL Associate, Damper RA/OA 610x562.2 Assy, Ins.
  • Page 81 MODEL: M5RT150BR 70024108697 No Description No Description Assy Tubing Assy, Pillar Rear Centre Right Assy, Base Pan Main Ins,pillar Rear CTR R (T3.0x916.2x168.8) Assy, Separator Assy, Pillar Rear Centre Left Ins, Separator 3 T10.0 X 924.2 X 299.0 Ins., Pillar Rear CTR L T3.0x916.2x118.8 Ins, Separator 3b T10.0x 924.2 X 34.0 Assy, Od Separator Ins, Separator 3c T10.0 X 924.2 X 111.0...
  • Page 82 No Description No Description ID Channel, Top Left Fan Guard Left Fan Guard Right Ins, ID Top Channel 1 Cover, Top Panel Ins, ID Top Channel 2 Ins, Cover Top Panel Ins, ID Top Channel 3 Handling Handle Sl/MSS Ins, ID Top Channel 4 Panel, Return Cover 2 Panel, Side Front L/R Ins, Panel Cover 2...
  • Page 83 MODEL: M5RT150BR (With Economizer Kit) 70024112025 No Description No Description Unit M5RT150BR Handling Handle Assy, Ins. Rain Hood Top Assy, Ins. Side Panel Air Hood, Top 2 Support, Damper Down Throw Top Assy, Ins. Rain Hood R AL Associate, Damper RA/OA 610x562.2 Assy, Ins.
  • Page 84 MODEL: M5RT180BR 70024108871 No Description No Description Assy Tubing Assy, Pillar Rear R Assy Base Pan Main Ins Pillar Rear Right Plate, Support Solenoid Valve Assy, Pillar Center L Panel Return Cover Ins, Pillar Center Ins, Panel Cover Assy, Pillar Center R Ins, Panel Cover Ins, Pillar Center Assy, Blower Support Bottom...
  • Page 85 No Description No Description Assy., Panel Front Plate, Cover Isolator Ins., Panel Front 1 Switch,Isolator 63a 3ID2504-1TL53 Siemen Ins., Panel Front 2 Base, Motor Lower Ins, Front Panel 3 Base, Motor Upper Ins., Panel Front 4 Motor,3.0kw 50Hz L 4HTD00885 Ins, Front Panel 5 Assy, Fan Frame Attachment Ins., Panel Front 6...
  • Page 86 MODEL: M5RT180BR (With Economizer Kit) 70024112421 No Description No Description Unit M5RT180BR Handling Handle Assy, Ins. Rain Hood Top Assy, Ins. Side Panel Air Hood, Top 2 Support, Damper Down Throw Top Assy, Ins. Rain Hood R AL Associate, Damper RA 610x706.2MM Assy, Ins.
  • Page 87 MODEL: M5RT210BR 70024110249 No Description No Description Assy. Tubing Ins, Cover Separator Big 4 Assy Base Pan Main Ins, Cover Separator Big 5 Plate, Support Solenoid Valve Attachment, Separator Panel Return Cover Assy, Pillar Rear Left Ins, Panel Cover Ins Pillar Rear Left Assy, Blower Support Bottom Assy, Pillar Rear Right Ins, Blower Support...
  • Page 88 Cover, Separator Small B Cover, Top Panel Accumulator,AC-PA153013 Ins, Cover Top Panel Support, Pipe and Access Valve Handling Handle SL/MSS Handset, Wired Rooftop Panel Mcquay Filter Drier, BFK 305S ALCO * ALL SPECIFICATION ARE SUBJECTED TO CHANGE BY THE MANUFACTURER WITHOUT PRIOR NOTICE.
  • Page 89 MODEL: M5RT210BR (With Economizer Kit) 70024112423 No Description No Description Unit M5RT210BR Assy, Ins. Rain Hood L Flange Back Support Assy, Rain Hood R Support, Damper Down Throw Top Assy, Ins. Rain Hood Top AL Associate, Damper OA 710x606.8MM Air Hood, Top 2 AL Associate, Damper RA 610x705.2MM Assy, Ins.
  • Page 90 MODEL: M5RT250BR No Description No Description Assy. Tubing Ins, Cover Separator Big 4 Assy Base Pan Main Ins, Cover Separator Big 5 Plate, Support Solenoid Valve Attachment, Separator 2 Panel Return Cover Assy, Pillar Rear CTR L Ins, Panel Cover Ins, Pillar Rear CTR L Assy, Blower Support Bottom Assy, Pillar Rear CTR R...
  • Page 91 Accumulator, AC-PA153015 Fan Guard Right M5RT180/210/250B(R) Support, Pipe and Access Valve Cover, Top Panel Handset, Wired Rooftop Panel Mcquay Ins, Cover Top Panel Filter Drier, BFK 305S ALCO * ALL SPECIFICATION ARE SUBJECTED TO CHANGE BY THE MANUFACTURER WITHOUT PRIOR NOTICE.
  • Page 92 MODEL: M5RT250BR (With Economizer Kit) No Description No Description Unit M5RT250BR Assy, Ins. Rain Hood R Flange Back Support Assy, Ins. Rain Hood Top AL Associate, Damper OA 1010x683.8MM Air Hood, Top 2 AL Associate, Damper RA 610x1012.4MM Assy, Ins. Rain Hood Back Assy, Belimo Actuator OA Wire (ECO) Assy, Ins.
  • Page 93 Products manufactured in an ISO certified facility. This document contains the most current product information as of this printing. © 2011 McQuay International www .mcquayup. com...

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