McQuay IM818 Installation And Maintenance Manual Download Page 1

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IM 818

Page 1

MCK Ceiling Cassette Ductless Split Type Air Conditioner

Installation and Maintenance Manual

IM818

Group:

Unitary

Part Number:

IM818

Date:

March 2005

Indoor Unit

Wireless Remote

Control (Standard)

Outdoor Unit

Wired Wall

Control (Optional)

Summary of Contents for IM818

Page 1: ...uctless Split Type Air Conditioner Installation and Maintenance Manual IM818 Group Unitary Part Number IM818 Date March 2005 2005 McQuay International Indoor Unit Wireless Remote Control Standard Outd...

Page 2: ...e Controller Operation Guide 18 Wired Wall Control Optional 19 Special Features 20 Dry mode 20 Heat mode heat pump only 20 Overheating protection heat pump only 20 Frost prevention 20 Fan speed and ra...

Page 3: ...ect power before servicing can cause severe personal injury or death CAUTION Use copper conductors only Unit terminals are not designed to accept other types of conductors Failure to do so can cause d...

Page 4: ...More Detail 32 1 4 32 1 4 14 3 4 13 3 4 36 5 8 36 5 8 Front Panel Frame Frame and Front Panel Model MLC 20 25 B BR 30 40 50C CR A 16 19 1 4 B 33 40 1 2 C 25 1 2 33 1 2 D 2 1 4 3 1 2 E 13 1 4 15 3 4 F...

Page 5: ...es The suspending structure must be stronge enough to avoid amplifying noise and vibration The height above the finished ceiling must be 13 3 4 mini mum See Figure 4 Avoid excessive heat Do not instal...

Page 6: ...er the com pressor stops Max head is 27 H2O Water Level Switch This normally closed switch will open and turn off the com pressor if the condensate level gets to high If it closes within 5 minutes the...

Page 7: ...Reattach the air intake grille and filter to the front panel The grille can swing in 4 directions Position the grille to maxi mize accessibility when open See Figure 7 From Front Panel LED Connectors...

Page 8: ...gure 10 Remove burrs from cut ends by holding tubing down wards to prevent metal chips from entering the tubing Slide flare nut on tubing Flare the tubing as shown in Figure 10 Figure 11 and Table 2 T...

Page 9: ...ned back on This will require two disconnects one by the outdoor unit and one by the indoor unit Table 4 Wire Fuse Breaker Requirements Cooling Only Table 5 Wire Fuse Breaker Requirements Heat Pump On...

Page 10: ...C I C MC FAN MOTOR GREEN YELLOW GREEN YELLOW COMP N L2 NOTE DISCONNECT CN6 IF CN4 IS USED KEY FIELD SUPPLY WIRING AS AIRSWING MOTOR DP DRAIN PUMP CONDENSATE COMP WHITE FAN MOTOR BROWN C CM BLUE DP MO...

Page 11: ...SED KEY FIELD SUPPLY WIRING AS AIRSWING MOTOR DP DRAIN PUMP CONDENSATE 208 230V 1 PH L2 L1 10A REDRED BLUE REDRED RED R L1S L2 T L3 U T1V T2 W T3 A2 A1 BLACK RED BLUE WHITE COMP L N GREEN YELLOW RED B...

Page 12: ...Y FIELD SUPPLY WIRING AS AIRSWING MOTOR DP DRAIN PUMP CONDENSATE 208 230V 1 PH 60Hz L2 L1 10A RED RED REDRED RED RED RED RED RED RED RED 1L1 3L2 5L3 2T1 4T2 6T3 1 2 A2 A1 BLUE BLACK BLUE BLUE RED BLAC...

Page 13: ...CN6 IF CN4 IS USED KEY FIELD SUPPLY WIRING AS AIRSWING MOTOR DP DRAIN PUMP CONDENSATE WHITE FAN MOTOR CM DP MODEL MCK 020 025AR INDOOR UNIT HEAT PUMP MODEL MLC M4L020 025BR OUTDOOR UNIT HEAT PUMP L L1...

Page 14: ...60Hz L2 L1 10A REDRED RED RED 21 L2 L3 22 T2 T3 A2 A1 BLUE WHITE COMP L N RED BLUE C R S COMPRESSOR NOTE FIELD INSTALL 10A FUSE IN BLUE WIRE AS SHOWN DP MODEL MCK 030AR INDOOR UNIT HEAT PUMP MODEL MLC...

Page 15: ...08 230V 1 PH 60Hz L2 10A RED 1L1 5L3 1 2T1 6T3 2 A2 A1 BLUE COMP L N RED BLUE C R S COMPRESSOR NOTE FIELD INSTALL 10A FUSE IN BLUE WIRE AS SHOWN DP MODEL MCK 040AR 50AR INDOOR UNIT HEAT PUMP MODEL MLC...

Page 16: ...OUTDOOR UNIT COOLING ONLY OPTIONAL LOW AMBIENT KIT OL MODEL MLC20BR 25BR OUTDOOR UNIT HEAT PUMP OPTIONAL LOW AMBIENT KIT FM CM 4 3 2 1 FSCM COMP N OF 4V TO INDOOR UNIT RED BLACK TH2 BLACK 4V BLACK BLA...

Page 17: ...er ft when tubing length L is more than 25 feet see Installation Diagram on page 5 Charge operation This operation must be done by weighing the R 22 being added thru the service port on the 3 way suct...

Page 18: ...ture Setting Set the desired room temperature by pressing the buttons to increase or decrease the set temperature The temperature setting range is from 60 F to 86 F Press both buttons simultaneously t...

Page 19: ...air baffle for better air dis tribution 9 Display normally shows room temperature Momen tarily shows set point when a change is made 10 Heat symbol blinks while outdoor coil defrosts heat pump only 1...

Page 20: ...ing Conditions Cooling 32 F on size 20 and 25 23 F on size 30 40 and 50 with optional Low Ambient Kit Heating heat pump only Ts Dry Bulb Temperature Th Wet Bulb Temperature Overall Checking Ensure tha...

Page 21: ...or Lights IR Receiver LED Indicator Lights and On Off Switch SLEEP TIMER POWER HEAT TIMER POWER POWER TIMER SLEEP HEAT Mode or Fault Action or Possible Cause ON ON Timer on ON ON Sleep mode on ON ON H...

Page 22: ...rting Wait for 3 to 4 minutes for the compressor to start operating Fans and compressor do not operate Power failure Check fuse or circuit breaker Power supply is disconnected Delay timer may be set i...

Page 23: ...nel by wiping it using soft cloth soaked in lukewarm water below 40 C 104 F with neutral detergent solution Note Do not use gasoline volatile substances or chemicals to clean the unit Every year Conde...

Page 24: ...818 2004 McQuay International www mcquay com 800 432 1342 This document contains the most current product information as of this printing For the most up to date product information please go to www...

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