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24

Table 8. Test Run Checklist

Checks

Pass

Fail

No electrical leakage
Unit is properly grounded
All electrical terminals 

properly covered
Indoor and outdoor units are 

solidly installed
All pipe connection points do 

not leak

Outdoor

(2):

Indoor

(2):

Water drains properly from 

drain hose
All piping is properly 

insulated

Unit performs COOL function 

properly

Unit performs HEAT function 

properly

Indoor unit louvers rotate 

properly
Indoor unit responds to 

remote controller

Dry Mode Operation (Dehumidification)

Procedure

1.  Use the provided wireless remote control and press 

the 

MODE

 button and select 

DRY

 mode.

2.  Press the 

UP/ DOWN

 button to select the desired 

temperature. The temperature setting range is from 

62°F (17°C) to 86°F (30°C) in one degree increments.

NOTE: 

The blower is preset at a low speed and cannot be 

changed therefore it will get cold and most likely 

will over shoot the temperature setting by 6-10

°

(3-5

°

C) depending on the room size or other 

various factors. Also the 

Follow Me

 

mode does 

not operate in this mode. 

NOTE: 

In addition, the indoor units do not have a humidistat 

installed therefore they are unable to determine 

humidity levels. This product is not recommend as 

a main source for dehumidification.

Sequence of Operation

When in dry mode operation the unit is actually in cooling 

mode with a low speed blower operation. Set remote temp 

to a lower room temp to begin the dry mode operation. 

The compressor will stop when the room temperature is 

4°F (2°C) lower than the temperature setting.  
However there is a temperature compensation for cooling 

mode that is two degrees Celsius. So the unit will stop 

when the temperature is 8°F (4°C) lower than the room 

temperature settings.

Summary of Contents for MCFA024S4-*P

Page 1: ...g jurisdiction should be consulted before installation The MCFA and MCFB Ceiling Floor indoor units are matched with an outdoor heat pump unit to create a mini split system that uses HFC 410A refriger...

Page 2: ...door unit will include the following items 1 Assembled Outdoor Unit and the following items Parts Figure Quantity Parts Figure Quantity Drain connector 1 Seal ring 1 Indoor Outdoor Unit Match Ups Outd...

Page 3: ...1 phase 60hz Nominal Cooling Capacity 018 1 5 tons 024 2 tons 036 3 tons 048 4 tons Unit Type L Low Ambient Heat Pump P Heat Pump CEILING FLOOR NON DUCTED INDOOR UNITS M CF A 018 S 4 1 P Unit Type CF...

Page 4: ...frigerant lines individually to prevent sweating UV rated tape field provided Wiring Condensate drain line wrapped in foam insulation Refrigerant Line Set Condensate Line And Indoor Outdoor Cable fiel...

Page 5: ...es 40 1 4 25 53 3 4 15 3 8 16 mm 1023 635 1365 391 406 MPB018S4S P inches 36 21 1 4 27 5 8 14 1 4 13 3 4 mm 914 540 702 363 350 MPB024S4S P MPB036S4S P inches 40 1 2 26 1 2 31 7 8 16 1 8 15 7 8 mm 103...

Page 6: ...P 50 5 8 1286 47 3 8 1203 MCFA048S4S P 65 1651 61 3 4 1568 MCFB018S4S P 42 1 8 1070 39 991 Figure 3 MCFA and MCFB Indoor Unit Dimensions Inches mm System Clearances Outdoor Unit 24 610 Air Outlet Air...

Page 7: ...ervice valve stems are factory torqued from 9 ft lbs 12 N for small valves to 25 ft lbs 34 N for large valves to prevent refrigerant loss during shipping and handling Using an Allen wrench rated at le...

Page 8: ...on page 7 for minimum clearances Place the MCFA or MCFB on a wall which is both ca pable of supporting the unit s weight and which is con structed to enable the unit to fit flush on the wall An uneven...

Page 9: ...own onto the brackets This will ensure that the unit remains level Indoor Unit Condensate Piping Connections IMPORTANT Make sure that drain piping is properly routed and insulated to prevent both leak...

Page 10: ...intercom Electrical interference and radio frequencies from any of these sources may affect operation Since water drains from the outdoor unit during vari ous stages of operation do not place anything...

Page 11: ...amples are When prevailing winds are from the air inlet side then position the wind barrier a minimum of 12 inches 305 mm from the unit as illustrated in Figure 18 Wind Barrier When prevailing wind is...

Page 12: ...rface to avoid ice build up around the unit Place the unit above a load bearing wall or area of the roof that can adequately support the unit Consult local codes for rooftop applications CAUTION Roof...

Page 13: ...ch this system contains While it may have some miscibility properties with mineral based oil and POE oil Polyolester it is not recommended to mix PVE oil with any other type of refrigerant oil 7 Align...

Page 14: ...tested and evacuated to remove any non condensables and moisture from the system Leak Test Use the following procedure to test for system leaks 1 Connect the manifold gauge set and dry nitrogen gas cy...

Page 15: ...size Make all electrical power wiring connections at the out door unit Be sure to reattach all electrical box covers after con nections are complete Indoor Unit All indoor units are powered by the out...

Page 16: ...208 230V Indoor Unit Outdoor Unit Indoor Unit Figure 27 Single Zone Wiring 30K and Below From Power Supply Indoor Unit CommunicationTerminal Block L1 L2 Power Terminal Block 208 230V Outdoor Unit L1 L...

Page 17: ...Output Remote Control Ceiling Floor Type CN21 M 5 5 VSWING INACTIVE CN24 M 5 SWING FAN FOR MODE CONFLICT SETTING DISPLAY BOARD 10 CN10A TO WIRED CONTROLLER 2 CN40 TO PRO GRA MMABL E WIR ED CON TRO LLE...

Page 18: ...and regular wired controller use the same wiring connector Figure 31 MCFA036S4 P Unit Wiring Diagram CN5 Inductor CN8 CN18 CN7 T2B OUTER PIPE TEMP SENSOR T2 T1 CN6 4 BLACK WHITE RED RED VSWING INACTI...

Page 19: ...OR TEMP SENSOR POW ER SUPPLY H PRO SV L PFC INDUCTOR COMPRESSOR DISCHARGE TEMP SENSOR RED BLACK V U CN19 CN51 CN55 W EXV BLACK DRIVER BOARD RED 7 7 YELLOW BLUE P 1 FM1 OUTDOOR DC FAN CN53 CN20 CN34 CN...

Page 20: ...N17 CN39 CN18 HEAT_D HEAT_Y SV 4 WAY BLUE BLUE RED BLUE CN4 CN2 CN3 CN1 COMP U V W Y G DCFAN2 DCFAN1 5 5 CN6 CN5 CN8 CN15 CN9 CN14 7 5 CN6 CN3 L YELLOW YELLOW U V W BLUE BLACK RED Y G CN39 WHITE BLACK...

Page 21: ...OARD C ODE PAR T NAME C OMP R E S S OR D HE AT1 C T1 AC CURRENT DETECTOR 4 WAY VALVE C OMP E XV E LE C TR IC E XPANS ION VALVE H P R O L P R O LOW P R E S S UR E S WIT CH HIG H P R E S S UR E S WIT CH...

Page 22: ...RED BLACK V U CN19 CN51 CN55 W EEV BLACK DRIVER BOARD RED YELLOW BLUE P 1 FM1 OUTDOOR DC FAN FAN MOTOR CAPACITOR CN53 CN20 CN3 CN4 CN10 CN40 CN22 CN44 CN8 CN9 CN7 CN2 CN1 CN5 CN54 CN52 CN33 5 6 CN6 SV...

Page 23: ...e Length feet meters Amount of Refrigerant to add 18 25 7 5 0 161 oz ft 15g m 24 25 7 5 0 322 oz ft 30g m 36 25 7 5 0 322 oz ft 30g m 48 25 7 5 0 322 oz ft 30g m Troubleshooting Table 7 Troubleshootin...

Page 24: ...crements NOTE The blower is preset at a low speed and cannot be changed therefore it will get cold and most likely will over shoot the temperature setting by 6 10 F 3 5 C depending on the room size or...

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