Summary of the content on the page No. 1
92-131 S/M (Basic) 2/21/01 4:49 PM Page A
SERVICE MANUAL (Basic Information)
CM3212 / KMS0712(✕2)+KMS1812
SPLIT SYSTEM AIR CONDITIONER
Indoor Unit Outdoor Unit
CM3212
KMS0712
KMS1812
8526481017300 REFERENCE NO. WM–700699
W
Summary of the content on the page No. 2
92-131 S/M (Basic) 2/21/01 4:49 PM Page B
Summary of the content on the page No. 3
92-131 S/M (Basic) 2/21/01 4:49 PM Page ii SERVICE MANUAL CM3212 / KMS0712(×2)+KMS1812 (Basic Information) WM–700699 ii
Summary of the content on the page No. 4
92-131 S/M (Basic) 2/21/01 4:49 PM Page iii • Connect all wiring tightly. Loose wiring may cause over- IMPORTANT! heating at connection points and a possible fire hazard. Please Read Before Starting When Transporting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important Be careful when picking up and moving the indoor and out- part of your job to install or service the system so it operates door units. Get a partner
Summary of the content on the page No. 5
92-131 S/M (Basic) 2/21/01 4:49 PM Page iv Table of Contents Page 1. OPERATING RANGE............................................................................................................................... 1 2. SPECIFICATIONS .................................................................................................................................... 2 Unit Specifications ...............................................................................................................
Summary of the content on the page No. 6
92-131 S/M (Basic) 2/21/01 4:49 PM Page 1 1. OPERATING RANGE CM3212 / KMS0712(×2)+KMS1812 Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 95°F DB / 71°F WB 115°F DB Minimum 67°F DB / 57°F WB 67°F DB WM–700699 1
Summary of the content on the page No. 7
92-131 S/M p.2 Table 2/21/01 4:55 PM Page 2 2. SPECIFICATIONS Unit Specifications Outdoor unit CM3212 Model No. Applicable indoor unit KMS0712, KMS1812 Cooling No. of indoor units 1 unit – A 1 unit – B 2 units – A + A 2 units – A + B 3 units – A + A + B BTU/h 7,000 / 7,000 18,000 / 18,000 14,000 / 14,000 25,000 / 25,000 32,000 / 32,000 Capacity kW 2.05 / 2.05 5.27 / 5.27 4.10 / 4.10 7.33 / 7.33 9.38 / 9.38 Phase, Frequency Hz Single, 60 Single, 60 Single, 60 Single, 60 Single, 60 Voltage ratin
Summary of the content on the page No. 8
92-131 S/M (Basic) 2/21/01 4:49 PM Page 3 Applicable Indoor Unit Model No. KMS0712 Type Wall-mounted Cooling BTU/h 7,000 / 7,700 Capacity kW 2.05 / 2.05 Air circulation (High) cu. ft./min. 220 / 210 Moisture removal (High) pints/h 2.2 / 2.1 Phase, Frequency Hz Single, 60 Voltage rating V 230 / 208 Available voltage range V 187 to 253 Controls Microprocessor Control unit Wireless remote control unit Temperature control IC thermostat Timer ON/OFF 24-hours & Program Fan speeds 3 Air deflector Hor
Summary of the content on the page No. 9
92-131 S/M (Basic) 2/21/01 4:49 PM Page 4 Applicable Indoor Unit Model No. KMS1812 Type Wall-mounted Cooling BTU/h 18,000 / 17,600 Capacity kW 5.27 / 5.16 Air circulation (High) cu. ft./min. 440 / 420 Moisture removal (High) pints/h 5.3 / 5.2 Phase, Frequency Hz Single, 60 Voltage rating V 230 / 208 Available voltage range V 187 to 253 Controls Microprocessor Control unit Wireless remote control unit Temperature control IC thermostat Timer ON/OFF 24-hours & Program Fan speeds 3 Air deflector H
Summary of the content on the page No. 10
92-131 S/M (Basic) 2/21/01 4:49 PM Page 5 3. DIMENSIONAL DATA Outdoor Unit: CM3212 Air intake 21/32 Air intake Air intake 21/32 25-1/16 21/32 26-3/8 4 × 15/32 dia. hole for fixing Air dischange 1/4" narrow tubing service valve 3/8" wide tubing service valve 1/2" wide tubing service valve 3-5/32 2-3/4 5-1/4 26-7/32 26-7/32 WM–700699 5 25-1/16 5-3/8 26-3/8 5-7/16 28-1/32 32-1/16
Summary of the content on the page No. 11
92-131 S/M (Basic) 2/21/01 4:49 PM Page 6 Indoor Unit: KMS0712 Rear panel (center point of gravity) 7-11/64 17-23/32 6-23/32 31-1/2 7-3/32 Center of 1-3/8 tubing hole 5-1/2 Wireless remote Drain hose O.D. 23/32 control unit (for right O.D. 1/4" narrow tubing rear) 1-49/64 O.D. 3/8" wide tubing 2-13/64 19/32 Indoor Unit: KMS1812 14-3/16 38-31/32 7-25/32 Rear panel (Center point of gravity) Wireless remote control unit 1-61/64 2-13/64 19/32 Drain hose O.D. 1-1/4 5-19/32 Center of Narrow tube
Summary of the content on the page No. 12
92-131 S/M (Basic) 2/21/01 4:49 PM Page 7 4. COOLING CAPACITY 230V CM3622 / KMS0712×1 Rating Capacity: 7,000 BTU/H Air Flow Rate: 220 CFM Evaporator Condenser Ent. Temp. °F/(°C) Ambient Temp. °F/(°C) 75 85 95 105 115 WB DB (23.9) (29.4) (35.0) (40.6) (46.1) TC 6,930 6,620 6,300 5,940 5,460 kW 0.48 0.52 0.57 0.61 0.67 59 72 (22.2) SHC 5,290 5,130 4,980 4,810 4,590 (15.0) 76 (24.4) SHC 6,030 5,880 5,730 5,560 5,330 80 (26.7) SHC 6,810 6,620 6,300 5,940 5,460 84 (28.9) SHC 6,930 6,620 6,300 5,940
Summary of the content on the page No. 13
92-131 S/M (Basic) 2/21/01 4:49 PM Page 8 208V CM3622 / KMS0712×1 Rating Capacity: 7,000 BTU/H Air Flow Rate: 210 CFM Evaporator Condenser Ent. Temp. °F/(°C) Ambient Temp. °F/(°C) 75 85 95 105 115 WB DB (23.9) (29.4) (35.0) (40.6) (46.1) TC 6,930 6,620 6,300 5,940 5,460 kW 0.47 0.51 0.56 0.60 0.66 59 72 (22.2) SHC 5,220 5,070 4,920 4,750 4,520 (15.0) 76 (24.4) SHC 5,940 5,780 5,630 5,460 5,240 80 (26.7) SHC 6,690 6,530 6,300 5,940 5,460 84 (28.9) SHC 6,930 6,620 6,300 5,940 5,460 88 (31.1) SHC
Summary of the content on the page No. 14
92-131 S/M (Basic) 2/21/01 4:49 PM Page 9 230V CM3622 / KMS1812 Rating Capacity: 18,000 BTU/H Air Flow Rate: 440 CFM Evaporator Condenser Ent. Temp. °F/(°C) Ambient Temp. °F/(°C) 75 85 95 105 115 WB DB (23.9) (29.4) (35.0) (40.6) (46.1) TC 17,820 17,010 16,200 15,280 14,040 kW 1.30 1.41 1.54 1.67 1.83 59 72 (22.2) SHC 12,350 11,900 11,460 10,970 10,340 (15.0) 76 (24.4) SHC 13,720 13,270 12,830 12,350 11,710 80 (26.7) SHC 15,150 14,700 14,260 13,780 13,140 84 (28.9) SHC 16,520 16,070 15,630 15,
Summary of the content on the page No. 15
92-131 S/M (Basic) 2/21/01 4:49 PM Page 10 208V CM3622 / KMS1812 Rating Capacity: 17,600 BTU/H Air Flow Rate: 420 CFM Evaporator Condenser Ent. Temp. °F/(°C) Ambient Temp. °F/(°C) 75 85 95 105 115 WB DB (23.9) (29.4) (35.0) (40.6) (46.1) TC 17,420 16,630 15,840 14,940 13,730 kW 1.30 1.41 1.54 1.67 1.83 59 72 (22.2) SHC 10,040 9,520 9,030 8,470 7,750 (15.0) 76 (24.4) SHC 11,360 10,850 10,350 9,790 9,070 80 (26.7) SHC 12,740 12,230 11,730 11,170 10,450 84 (28.9) SHC 14,060 13,550 13,050 12,490 1
Summary of the content on the page No. 16
92-131 S/M (Basic) 2/21/01 4:49 PM Page 11 5. REFRIGERANT FLOW DIAGRAM OUTDOOR UNIT Narrow Narrow tube INDOOR UNIT tube O.D. UNIT A service valve 1/4" (6.35 mm) A Capillary tube Drier O.D. 1/4" (6.35 mm) B O.D. 1/4" (6.35 mm) C Check port A Check INDOOR UNIT port B UNIT B Check port C Wide tube Wide tube service O.D. Accumulator valve 3/8" (9.52 mm) A O.D. 3/8" (9.52 mm) B Accumulator O.D. 1/2" (12.7 mm) C INDOOR UNIT UNIT C Accumulator WM–700699 11 Heat exchanger Heat exchanger Heat exchang
Summary of the content on the page No. 17
92-131 S/M (Basic) 2/21/01 4:49 PM Page 12 6. ELECTRICAL DATA Electrical Characteristics CM3212 / KMS0712×1 Indoor Unit Outdoor Unit Performance at Complete Unit 230/208V – 1ø – 60Hz Fan Motor Fan Motor Compressor A 0.15 / 0.14 0.62 / 0.56 2.53 / 2.80 3.3 / 3.5 Rating Conditions W 34 / 28 140 / 126 576 / 566 750 / 720 Locked-Rotor Amperes A 0.19 / 0.18 1.95 / 1.77 22 — Remarks: Rating conditions are: Outside air temperature 95°F DB/75°F WB Indoor unit entering air temperature 80°F DB/67°F
Summary of the content on the page No. 18
92-131 S/M (Basic) 2/21/01 4:49 PM Page 13 CM3212 / KMS0712+KMS1812 Outdoor Unit Performance at Indoor Units Complete Unit 230/208V – 1ø – 60Hz Fan Motor Compressor A 0.55 / 0.54 1.45 / 1.42 9.80 / 10.64 11.8 / 12.6 Rating Conditions W 124 / 108 330 / 290 2,246 / 2,202 2,700 / 2,600 Locked-Rotor Amperes A 0.19 + 0.45 / 0.18 + 0.40 1.95 / 1.77 22 + 54 — Remarks: Rating conditions are: Outside air temperature 95°F DB/75°F WB Indoor unit entering air temperature 80°F DB/67°F WB CM3212 / KMS7012
Summary of the content on the page No. 19
92-131 S/M (Basic) 2/21/01 4:49 PM Page 14 Electrical Wiring Diagram WARNING: To avoid electrical shock hazard, be sure to Outdoor Unit: CM3212 disconnect power before checking, servicing and/or cleaning any electrical parts. Capacitor Compressor CA motor 1 S WHT 2 R OLR A BLK CMA 3 BRN RED C Terminal Capacitor Compressor plate (3P) A CB motor S WHT 1 R OLR B BLK CMB 2 ORG RED C Capacitor 3 Compressor ORG CC motor S Terminal BLK WHT plate (3P) B R BLK YEL CMC 1 RED C PNK 2 GRY GRY Thermost
Summary of the content on the page No. 20
92-131 S/M (Basic) 2/21/01 4:49 PM Page 15 Indoor Unit: KMS0712 WARNING: To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts. Terminal plate WHT 1 WHT Relay 2 BLK 3 RED G ORG 3 2 1 2 1 3 2 1 2 1 WHT 1 1 1 1 BLK 2P 3P 2P 2P WHT 2 2 2 2 BLK PRY Supply CM TH1 Thermistor BRN 1 1 1 1 BLK 2P 2P BRN 2 2 2 2 BLK SEC TH2 P S CONTROLLER Thermistor 2 2 BRN BRN 1 1 Power Connector transformer 5P FM 9P SW 1 2 3 4 5 1 2 8 9 1 2 3
