MrCool Universal MDUI180 E Series, Owner'S Manual

Page 1: ...osing MRCOOL Please read this manual carefully before installation and keep it for future reference Owner s Manual Due to updates and constantly improving performance the information and instructions...

Page 2: ...tallation 11 4 No Vac Quick Connect Installation 12 5 Bending the Line Set 13 6 Condensate Removal 13 2 Installation Location 10 8 Electric Heater 14 9 Electric Heat Kit Installation 15 10 Air Handler...

Page 3: ...l shock and or re In North America installation must be performed in accordance with the requirements of the NEC and CEC by authorized personnel only Contact an authorized service technician for repai...

Page 4: ...technician in order to avoid hazard This appliance should not be used by children under the age of 8 years old or persons with reduced physical sensory or mental capabilities or lack of experience and...

Page 5: ...ctionality of the appliance DO NOT force dry the lter using an open ame or blowers as this could damage it This appliance must be properly grounded during installation or electrical shock may occur In...

Page 6: ...66 0457 If the product is malfunctioning and or is inoperable please contact MRCOOL technical support at the aforementioned number as soon as possible and provide the following information a Product N...

Page 7: ...The Universal Series Air Handler o ers the perfect combination of superior product quality operating e ciency operating sound levels and value for money The condensing unit uses the environmentally fr...

Page 8: ...0 Unit Dimensions Inches mm Width Depth Height A B 21 1 4 in 540 mm 21 1 4 in 540 mm 48 1 4 in 1224 mm 11 5 8 in 295 mm 20 in 508 mm Model MDUI18024 MDUI18036 24 3 4 in 630 mm 21 1 4 in 540 mm 57 in 1...

Page 9: ...uld be installed based upon nominal tonnage 2 Use 0 96 as approximate SCFM correction factor for wet coil optional Optional electric heater kW 3 0 4 0 Cooling capacity ton 5 10 15 Model MDUI18024 MDUI...

Page 10: ...any prevailing local codes regulations The manufacturer assumes no responsibilities for equipment installed in violation of any codes or regulations 4 Replacement Parts When reporting shortages damag...

Page 11: ...lation only DO NOT operate this product without complete ductwork attached This air handler is designed for a complete supply and return ductwork system DO NOT install the air handler in a location ab...

Page 12: ...ge with Nitrogen Must open stop valves after pulling vacuum and before powering on unit Weld joint Weld joint Air Handler MRCOOL Universal Series DC Inverter Open stop valves on the condenser and air...

Page 13: ...e to the M2 Connector a ached in step 3 with a ghtening force of 48 lb 65 Nm 8 Repeat this process for the AIR HANDLER at the other end of the LINE SET Connec ons must be made exactly as speci ed to a...

Page 14: ...e corrosive or peculiar smells This will prevent odors from entering indoors or corrupting the unit DO NOT connect the condensate drain pipe into the rain pipe This will prevent rain water from pourin...

Page 15: ...ed electric heater An electric heat kit is available as an optional accessory The only heat kits that can be used are MHK U series listed on the following page Please refer to installation instruction...

Page 16: ...Insert power leads into the circuit breaker lugs or stripped red and black wires for heat kits without a circuit breaker and tighten 7 Connect ground wire to ground lug 8 Break out appropriate area of...

Page 17: ...A2 and SA1 to Up Air Handler Field Conversion Follow these instructions during unit installation in order to enable a Universal Series 5 ton condenser and air handler split system to operate at 4 ton...

Page 18: ...iring terminals should be connected securely to the terminal board A loose connection is unsafe Only use the power cables that are delivered along with the air conditioner If you want to change the po...

Page 19: ...g condition where the ambient temperature is 104 F 40 C and multi core copper cable e g YJV copper cable with insulated PE and PVC sheath is protected by a conduit and is resistant to 194 F 90 C in ma...

Page 20: ...sformer XT1 XT3 Wiring board Y B 4 way valve control signal energized under the heating mode W1 Heater control signal R 24V AC power supply C 24V common G Indoor unit fan signal H eat W13 X1 X2 X10 X4...

Page 21: ...attach to the terminal board Use a screwdriver to tighten the terminal screw For braided strand wires Refer to Fig 2 14 B Fig 2 15 1 Use wire cutters to cut o the wire end and then peel away about 3 8...

Page 22: ...se the Molex Plug Wiring Harness from the electric heat kit and attach it to the Molex Plug Wiring Harness coming from air handler s PCB board c The Molex Plug Connection will power the air handler so...

Page 23: ...x Amperage MDUI 48K 60K MHK15U 60 30 Amps 60 60 Amps MDUI 48K 60K MHK20U Circuit Breaker Panel 15 KW and 20 KW Heat Kit See Note NOTE A Heat Kit Installation is NOT required for the unit to function p...

Page 24: ...occur Does water drain properly from drain hose Condensate water droplets may occur Is the voltage consistent with the speci cations stated on the nameplate The unit could fail or its components may...

Page 25: ...ebris around the unit especially metal lings thrum and clippings 4 Ensure the unit s appearance and piping system have not been damaged during transportation or handling 5 Check for any loose terminal...

Page 26: ...ect circuit breaker Remove obstacles Adjust thermostat temperature setting Close the doororwindows Draw curtain or louver Reduce otherheat sources Clean the lter Air inlet and outlet of the units are...

Page 27: ...d be delayed up to 1minute Gas refrigerant ow can cause a slight noise Gas refrigerant ow can cause a slight noise The drainage system can cause this noise during operation Dust has settled inside the...

Page 28: ...fan error 15 H7 Driverout of step protection 16 HC Pfc protection 17 Lc Startup failure 18 19 20 21 P0 Drive reset protection 3 E3 Compressorlow pressure protection P6 Mastercontrol and drivercommuni...

Page 29: ...ntact the local appointed service center Maintenance AfterSeasonal Use Parts Replacement If the air conditioning unit you purchased has any quality problem or you have any inquiry please contact the M...

Page 30: ...following options Dispose of the appliance at a designated municipal electronic waste collection facility When buying a new appliance the retailer will receive the old appliance free of charge The ma...

Page 31: ...his product and or manual are subject to change without prior notice Consult with the sales agency or manufacturer for details Copyright 2021 MRCOOL LLC ELECTRICIAN and or HVAC TECHNICIAN LICENSE INST...