Mitsubishi Electric MUM18NW - Manuals

Page 2 - FEATURES; FLEXIBLE INSTALLATION OF INDOOR UNITS

2 1 FEATURES This “2 to 1” Multi system consists of a single outdoor unit with two compressors that permit up to two indoor units tobe installed separate rooms, each with its own controller. 1.SPACE-SAVING LAYOUT Two indoor units are served by a single outdoor unit whose installation requires only m...

Page 3 - OUTDOOR UNIT; (The timer function was changed to the clock timer function.)

3 2 TECHNICAL CHANGES 3 PART NAMES AND FUNCTIONS OUTDOOR UNIT MUM18NW MSM18EW ➔ MSM18NW 1. Indoor unit has been changed.2. Outdoor unit has been changed.3. Remove controller has been changed. (The timer function was changed to the clock timer function.) 4. Indoor auto vave has been adopted.5. Outdoo...

Page 4 - SPECIFICATIONS

4 4 SPECIFICATIONS Model MSM18NW SINGLE DOUBLE Cooling capacity w 1 BTU/h 8,400 8,400 ✕ 2 850 1,700 9.9 10.0 MS09NW ✕ 2 White 115,60,1 15 0.5 0.37 208-265-328 177-226-279 – 5/8 32-1/16 7-3/16 10-13/16 18 Max. 49 Max. 25 Flared Flared 3/8 1/4 Not supplied (optional parts) 12V DC Wireless type 122 23-...

Page 5 - DATA

Models Indoor air Outdoor intake air DB temperature(˚F) MS09NW 71 67 63 TC 10.3 9.74 9.16 SHC 5.93 6.91 7.72 TPC 0.76 0.71 0.68 TC 9.61 9.07 8.48 SHC 5.55 6.44 7.16 TPC 0.83 0.79 0.75 TC 9.03 8.4 7.9 SHC 5.21 5.95 6.66 TPC 0.89 0.85 0.81 TC 8.4 7.81 7.18 SHC 4.84 5.55 6.06 TPC 0.94 0.90 0.87 TC 7.73...

Page 6 - CONDENSING PRESSURE AND SUCTION PRESURE

6 3.CONDENSING PRESSURE AND SUCTION PRESURE (ONE INDOOR UNIT WITH ONE OUTDOOR UNIT) Data is based on the condition of indoor humidity 50%. Air flow should be set at HI. A point on the corve shows the referencepoint. MS09NWMUM18NW 68 40 50 60 70 80 90 100 (PSIG) 70 Outdoor ambient temperature 75 80 8...

Page 7 - STANDARD OPERATION DATA

7 Model Unit Single Double MSM18NW 8,400 8,400 ✕ 2 0.71 0.71 0.85 1.70 0.815 1.63 6.64 7.16 ✕ 2 260 270 75 75 194 191 116 118 64 54 60 60 57 57 Cooling MS09NW 115.60.1 0.035 ✕ 2 0.34 ✕ 2 MUM18NW 208/230.60.1(3-wire) 1.0 172 25 ✕ 2 1lds 14oz ✕ 2 80 67 1,230 279 95 — 900 1,150 Btu/h — kW kW A kW A A p...

Page 9 - OUTLINES AND DIMENSIONS

9 6 OUTLINES AND DIMENSIONS MODEL : MUM18NW OUTDOOR UNIT REAR VIEW Unit center Refrigerantpipe(Flared) { 3/8 Refrigerantpipe(Flared) { 1/4 7/8 Wiring hole { 3-7/8 NOTE : The symbol { indicates diameter. 12-1/4 13-1/2 11-7/16 1-3/16 1-3/16 2-3/8 5-1/4 33-1/2 1/4 1-3/16 12-7/8 5-1/8 10-1/8 8 5-13/16 2...

Page 10 - WIRING DIAGRAM; OUTDOOR; MODEL MUM18NW WIRING DIAGRAM; MF

10 7 WIRING DIAGRAM OUTDOOR MODEL MUM18NW WIRING DIAGRAM F NR 115V 3 4 BLK BRN 2 1 BLU GRY N ❈ ❈ ❈ BLK ORN YLW X2 X1 2 2 6 6 4 4 YL W BLU L2 BLU RED TB3 TO INDOORUNIT No.BCONNECTINGWIRESDC12V 2 52 C2 GRY VLT 2 1 TO INDOORUNIT No.ACONNECTINGWIRESDC12V 2 1 52 C1 ORN BRN 2 1 TB2 X2 X1 5 5 3 3 WHT RED R...

Page 11 - REFRIGERANT SYSTEM DIAGRAM

11 8 REFRIGERANT SYSTEM DIAGRAM MS09NW ✕ 2 / MUM18NW Unit : inch Indoor unit Outdoor unit Indoor heat exchanger Indoor coilthermistorRT12 RoomtemperaturethermistorRT11 Flared connection Flared connection Refrigerant pipe [ 1/4 (Option)(with heat insulator) Ball valvewith service port Refrigerant pip...

Page 12 - TROUBLESHOOTING; -1 Cautions on troubleshooting; -2 Trouble criterion of main parts

12 9 TROUBLESHOOTING MUM18NW 9-1 Cautions on troubleshooting 9-1-1 Before troubleshooting, check the followings: 1) Check the power supply voltage.2) Check the indoor/outdoor connecting wire for mis-wiring. 9-1-2 Take care the followings during servicing. 1) Befor servicing the air conditioner, be s...

Page 13 - Check of outdoor unit

13 Compressor and outdoor fan do not operate.(Only indoor fan operates.) Check of outdoor unit Press EMERGENCY ON/OFF button.3-minute time delay works.Test mode operates for 30 minutes. Check the outdoor fan motor , compressor , relay , contactor , and wiring. Turn on outdoor power supply. No No Che...

Page 14 - DISASSEMBLY INSTRUCTIONS; OUTDOOR UNIT MUM18NW

14 10 DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT MUM18NW 1. Removing of the cabinet (1)Remove the set screws of the valve cover to remove the valve cover as shown in Photo 2. (2)Remove the set screws of the side panel to remove the side panel and cabinet. 2. Removing the propeller (1)Remove the propeller...

Page 17 - PARTS LIST

17 11 PARTS LIST OUTDOOR UNIT PARTSMUM18NW Refer to MS09EW for indoor unit. No. Parts No. Remarks Parts Name Symbol in Wiring Diagram Q , ty/unit MUM18NW 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 T2W 382 342 T2W 462 232 T2W 667 249 T2W 739 245 T2W 466 509 T2W A75 301 R01 093 115...

Page 18 - OPTIONAL PARTS

18 12 OPTIONAL PARTS 10ft16ft23ft33ft 3/8 1/4 C 13/16D 1-1/16 MAC - 440PIMAC - 441PIMAC - 442PIMAC - 443PI MS09NW 0 1 Pipe length Cross-section Part No. Model A-Gas B-Liquid Pipe size O.D Insulation Additional refrigerant charge R-22(Oz) 1. REFRIGERANT PIPES The air conditioner has flared connection...

Page 21 - 400 Lawrenceville Suwanee Road

3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904 www.mrslim.com Specifications are subject to change without notice.