MrCool HAC140 Series, Owners & Installation Manual

Page 1: ...r choosing MRCOOL Please read this manual carefully before installation and keep it for future reference Due to updates and constantly improving performance the information and instructions within thi...

Page 2: ...installation adjustment and operation of this unit Read these instructions thoroughly before attempting installation or operation Failure to follow these instructions may result in improper installat...

Page 3: ...OUTDOOR UNIT INSTALLATION TOP DISCHARGE UNIT 10 REFRIGERANT PIPE INSTALLATION 11 VACUUM DRYING AND LEAKAGE CHECKING 12 ADDITIONAL REFRIGERANT CHARGE 13 PIPE INSULATION 14 ELECTRICAL WIRING INSTALLATI...

Page 4: ...OUTDOOR UNIT mrcool com Page 2 Fig 1 Table 1 21 3 4 554 21 3 4 554 21 3 4 554 21 3 4 554 21 3 4 554 21 3 4 554 1 Dimensions...

Page 5: ...OUTDOOR UNIT mrcool com Page 3 Fig 2 2 Service Space...

Page 6: ...OUTDOOR UNIT mrcool com Page 4 Applicable for 18k 24k 30k 36k cooling only type Applicable for 18k 24k 30k 36k cooling heating type Fig 3 1 Fig 3 2 3 Piping Diagrams...

Page 7: ...OUTDOOR UNIT mrcool com Page 5 Applicable for 42k 48k 60k cooling only type Applicable for 42k 48k 60k cooling heating type Fig 3 3 Fig 3 4...

Page 8: ...ll the stated cross section ground wire and keep it grounding properly and reliably 4 According to the actual connection of low voltage switch or short wiring 1 Grounded and all wiring to conform to I...

Page 9: ...OUTDOOR UNIT mrcool com Page 7 Table 2 5 Electrical Characteristics...

Page 10: ...time may take 15 20 minutes It is suggested to install a booster in the outdoor unit 18K 24K 30K and 36K units only to shorten the restart time In the case of high and low pressure imbalance a booste...

Page 11: ...r Unit Installation Refrigerant Pipe Installation and Insulation Refrigerant Pipe Installation and Insulation Drainage Pipe Installation And Insulation Drainage Pipe Installation And Insulation Vacuum...

Page 12: ...port the outdoor unit s weight The location should put the outdoor unit as close to the indoor unit as possible The piping length and height drop can not exceed the allowable value Reference Table 4 S...

Page 13: ...topped ground area where it will be exposed to the heat of the sun the unit should be raised su ciently above the roof or ground to avoid the unit from taking in the accumulated heat of those surface...

Page 14: ...or precipitation Check the local weather bureau for average snow accumulation in the area Be sure to Isolate the unit from rain gutters to avoid the foundation from possible being washed out Roof inst...

Page 15: ...he copper pipe 6 Before test operation the joint parts should not be heat insulated 7 Drill holes if the pipes need to pass through the wall 8 Bend the pipes if necessary to pass through the wall smoo...

Page 16: ...as shown in the image below Also protect all painted surfaces and insulation during brazing After brazing cool the joint with a wet rag The valve can be opened by removing the plunger cap and then fu...

Page 17: ...ressure gauge to the infusing mouth of the gas pipe and liquid pipe and keep vacuum pump running for an hour the degree of vacuum the pump should reach is 755mmHg 2 If the vacuum pump can not reach 75...

Page 18: ...sure to avoid over charging the system with refrigerant as it could cause a leak damage to the compressor or result in personal injury Use supplemental exible pipe to connect the refrigerant cylinder...

Page 19: ...ve 10 mm If in a hot or wet environment the layer of insulation should be thicker Installation of insulation NOTE Gas pipe and liquid pipe should be insulated separately If the gas pipe and liquid pip...

Page 20: ...performed by a quali ed electrician Air conditioning equipment should be grounded according to the local electrical regulations Current leakage protection switch should be installed Do not connect the...

Page 21: ...OUTDOOR UNIT mrcool com Page 19 Table 7...

Page 22: ...nd indoor units Are both the gas side and liquid side valves fully opened Note the air conditioner is pre heated by turning on the power To test the operation set the air conditioner under the mode of...

Page 23: ...roubleshooting OUTDOOR UNIT mrcool com Page 21 System Alarm Green light or Yellow light slowly ashes System lock Green light goes out and Yellow light is on Turn o power for 10 15 minutes and then res...

Page 24: ...Sensor is open circuit Sensor is short circuit Component damaged Wet Replace PCB Condenser temp sensor abnormal Error T5 discharge Temperature sensor fault Error No Check the sensor is good or not Err...

Page 25: ...efrigerant Error Remove the dirty and open the valve Error High pressure alarm Error OK Check the liquid side of the system Heat exchanger of outdoor unit is bad High Pressure alarm OK There is N2 or...

Page 26: ...OK Replace PCB OK Error Discharge the refrigerant vacuum recharge the refrigerant Error High exhaust temperature protection Error OK Check the connection between sensor and PCB High exhaust temperatur...

Page 27: ...nd speci cations of this product and or manual are subject to change without prior notice Consult with the sales agency or manufacturer for details Split System Heat Pump Air Conditioner 13 14 SEER 1...