MRCOOL MXH1518H24BV12 - Manuals

Page 2 - INSTALLATION INSTRUCTIONS; WARNING; Table of Contents; HEAT PUMP SPLIT SYSTEM

Page 1 of 11 506318-03C mrcool.com Save these instructions for future reference INSTALLATION INSTRUCTIONS (R410A REFRIGERANT) (P) 506318-03C *P506318-03C* Manufactured By MRCOOL, LLC Hickory, KY 42051 This manual must be left with the homeowner for future reference. This is a safety alert symbol and...

Page 3 - Outdoor Section; CAUTION; Safety Precautions

506318-03C Page 2 of 11 mrcool.com NOTE: Maximum liquid-line size is 3/8 in. O.D. for all residential applications including long lines. Outdoor Section Zoning ordinances may govern the minimum distance the condensing unit can be installed from the property line. Install on a Solid, Level Mounting P...

Page 4 - Refrigeration Line Sets

Page 3 of 11 506318-03C mrcool.com Figure 1. DO LOCATE THE UNIT: • With proper clearances on sides and top of unit • On a solid, level foundation or pad • To minimize refrigerant line lengths DO NOT LOCATE THE UNIT: • On brick, concrete blocks or unstable surfaces • Near clothes dryer exhaust vents ...

Page 6 - Electrical Connections; Control Wiring

Page 5 of 11 506318-03C mrcool.com Electrical Connections Electrical Shock Hazard! Turn OFF electric power before connecting unit, performing any maintenance or removing panels or doors. More than one disconnect may be required to turn off all power. FAILURE TO DO SO COULD RESULT IN BODILY INJURY OR...

Page 7 - Adjusting Charge; Cooling Mode

506318-03C Page 6 of 11 mrcool.com Start-Up Procedure 1. Check to ensure: • Service valve and gage port caps are installed and tightened. • Voltage supply at unit agrees with nameplate rating. • Field wiring connections are tight and factory wiring has not been disturbed and are tight. • Indoor fan ...

Page 8 - Operation; Emergency Heat Function (Room Thermostat); Defrost Control Timing Pins

Page 7 of 11 506318-03C mrcool.com Operation The outdoor unit and indoor blower cycle on demand from the room thermostat. When the thermostat blower switch is in the ON position, the indoor blower operates continuously. Emergency Heat Function (Room Thermostat) An emergency heat function is designed...

Page 9 - Diagnostic LEDs; Defrost Board Pressure Switch Connections

506318-03C Page 8 of 11 mrcool.com During a single demand cycle, the defrost control will lock by any pressure switch wired to the control board. In addition, the diagnostic LEDs will indicate a locked-out pressure switch. The unit will remain locked out until power to the board is interrupted, then...

Page 11 - Homeowner’s Information

506318-03C Page 10 of 11 mrcool.com Homeowner’s Information ELECTRICAL SHOCK HAZARD! Turn OFF electric power to unit before performing any maintenance or removing panels or doors. FAILURE TO DO SO COULD RESULT IN BODILY INJURY OR DEATH. WARNING Heat Pump Operation Your new heat pump has several char...

Page 13 - Consult with the sales agency or manufacturer for details.; INSTALLATION LOCATION:; Signature Series

The design and speciﬁcations of this product and/or manual are subject to change without prior notice. Consult with the sales agency or manufacturer for details. ELECTRICIAN and/or HVAC TECHNICIAN: LICENSE #: INSTALLATION DATE: INSTALLATION LOCATION: SERIAL NUMBER: Signature Series MHP15*A HEAT PUMP...