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SERVICE MANUAL (Basic Information)
CMH1822 / KMH0922 (✕2)
SPLIT SYSTEM AIR CONDITIONER
Indoor Unit Outdoor Unit
CMH1822
KMH0922
8526481017400 REFERENCE NO. WM–700700
W
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SERVICE MANUAL CMH1822 / KMH0922 (×2) (Basic Information) WM–700700 ii
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• 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 to help, and bend your knees when safely and e
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Table of Contents Page 1. OPERATING RANGE............................................................................................................................... 1 2. SPECIFICATIONS .................................................................................................................................... 2 Unit Specifications ....................................................................................................................................... 2 Applicable Indoor
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1. OPERATING RANGE CMH1822 / KMH0922 (×2) 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–700700 1
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2. SPECIFICATIONS Unit Specifications Outdoor unit CMH1822 Model No. Applicable indoor unit KMH0922 No. of indoor units 1 unit (Cooling) 1 unit (Heating) 2 units (Cooling) 2 units (Heating) BTU/h 8,800 / 8,700 10,000 / 9,800 16,800 / 16,300 19,000 / 18,000 Capacity kW 2.58 / 2.55 2.93 / 2.87 4.92 / 4.78 5.57 / 5.27 Phase, Frequency Hz Single, 60 Single, 60 Single, 60 Single, 60 Voltage rating V 230 / 208 230 / 208 230 / 208 230 / 208 Available voltage range V 187 to 253 187 to 253 187 to 253 187
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Applicable Indoor Unit Model No. KMH0922 Type Wall-mounted Cooling Heating BTU/h 8,800 / 8,700 10,000 / 9,800 Capacity kW 2.58 / 2.55 2.93 / 2.87 Air circulation (High) cu. ft./min. 220 / 210 Moisture removal (High) pints/h 2.2 Phase, Frequency Hz Single, 60 Voltage rating V 230 / 208 Available voltage range V 187 to 253 Heat element kW – HSPF — 1.0 / 0.82 – 6.6 / 6.6 Controls Microprocessor Control unit Remote control unit Temperature control IC thermostat Timer ON/OFF 12-hours Fan speeds 3 Air
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3. DIMENSIONAL DATA Outdoor Unit: CMH1822 21-3/16 5-3/4 Air intake Air intake High pressure gauge port 4 × 15/32 dia. hole Air discharge O.D. 1/4" narrow tubing service valve Unit A O.D. 3/8" wide tubing service valve 32-11/16 2-1/4 1-3/16 O.D. 1/4" narrow tubing service valve Unit B O.D. 3/8" wide tubing service valve 11-7/32 2-9/32 2-9/32 2-9/32 3-3/4 3/4 Indoor Unit: KMH0922 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 Drain h
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4. COOLING CAPACITY 230V CMH1822 / KMH0922 (×1) Rating Capacity: 8,800 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 8,710 8,320 7,920 7,470 6,860 kW 0.62 0.67 0.73 0.79 0.87 59 72 (22.2) SHC 6,200 5,990 5,790 5,560 5,260 (15.0) 76 (24.4) SHC 6,940 6,740 6,530 6,300 6,000 80 (26.7) SHC 7,720 7,510 7,310 7,080 6,780 84 (28.9) SHC 8,460 8,250 7,920 7,470 6,860 88 (31.1) SHC 8,710 8,320 7,920 7
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208V CMH1822 / KMH0922 (×1) Rating Capacity: 8,700 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 8,610 8,220 7,830 7,390 6,790 kW 0.61 0.66 0.72 0.78 0.86 59 72 (22.2) SHC 6,090 5,880 5,680 5,450 5,150 (15.0) 76 (24.4) SHC 6,800 6,590 6,390 6,160 5,860 80 (26.7) SHC 7,550 7,340 7,130 6,910 6,610 84 (28.9) SHC 8,260 8,050 7,830 7,390 6,790 88 (31.1) SHC 8,610 8,220 7,830 7,390 6,790 TC 8,910
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5. HEATING CAPACITY 1 Phase 60Hz 230V Model Name: CMH1822 / KMH0922 (×1) Indoor Entering Air Temperature 70°F 30,000 25,000 20,000 15,000 13,100 10,000 5,000 17 23 32 41 47 50 59 68 75°F (–8.3) (–5) (0) (5) (8.3) (15) (20) (23.7°C) Temperature of Air Entering Outdoor Coil (°F D.B. at 75% RH) WM–700700 7 Heat-pump with back-up heater Heat-pump capacity Heating Capacity (BTU/h)
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1 Phase 60Hz 208V Model Name: CMH1822 / KMH0922 (×1) Indoor Entering Air Temperature 70°F 30,000 25,000 20,000 15,000 12,300 10,000 9,800 5,000 17 23 32 41 47 50 59 68 75°F (–8.3) (–5) (0) (5) (8.3) (15) (20) (23.7°C) Temperature of Air Entering Outdoor Coil (°F D.B. at 75% RH) WM–700700 8 Heat-pump with back-up heater Heat-pump capacity Heating Capacity (BTU/h)
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6. REFRIGERANT FLOW DIAGRAM Cooling Cycle Indoor Unit A Compressor A Wide tube Accumulator O.D. Service 3/8" valve (9.52mm) Reversing Muffler valve Narrow tube Check O. D. port A 1/4" Check valve Service valve Dehydrator (6.35mm) ( ) Strainer Capillary tube Compressor B Wide tube Accumulator O.D. Service 3/8" valve (9.52mm) Reversing Muffler valve Narrow tube Check O.D. port B 1/4" Check valve Service valve (6.35mm) Dehydrator ( ) Strainer Capillary tube Indoor Unit B Heating Cycle Ind
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7. ELECTRICAL DATA Electrical Characteristics CMH1822 / KMH0922 (×1) Indoor Unit Outdoor Unit Complete Unit Performance at 230/208V – 1ø – 60Hz Fan Motor Max. Heat Fan Motor Compressor Heat-pump Max. Heat A 0.15 / 0.14 — 0.52 / 0.52 3.43 / 3.64 4.1 / 4.3 — Rating Cooling Conditions W 34 / 29 — 116 / 104 750 / 737 900 / 870 — A 0.15 / 0.14 4.35 / 3.93 0.52 / 0.52 3.43 / 3.64 4.1 / 4.3 8.45 / 8.23 Rating Heating Conditions W 34 / 29 1,000 / 818 116 / 104 750 / 737 900 / 870 Locked-Rotor Amperes
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Electrical Wiring Diagram WARNING: To avoid electrical shock hazard, be sure to Outdoor Unit: CMH1822 disconnect power before checking, servicing and/or cleaning any electrical parts. OLR. A Terminal Power relay A PTC. A plate C 3 4 RED RED RED R 1 RED BLK CMA A 12 Capacitor A 2 BLK BLK WHT S BLK WHT OLR. B Power relay B SA BLK G 3 C 4 BLU RED SA S Terminal WHT CMB B plate Capacitor B BLK WHT 12 7PB R BLU 7 PTC. B ORG BLK 6 PA1 PB2 5 BLK GB PB1 PA2 Capacitor F YEL (BLU) 4 WHT FMB BRN BRN 1 1
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Indoor Unit: KMH0922 WARNING: To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts. Terminal plate Transformer 1 BRN 2 RED S P ORG 3 4 YEL 5 PNK 6 BLK 1 2 5 4 3 2 1 7 1 2 WHT 5 4 3 2 1 2P 1 1 1 1 5P 2P Supply 2 2 2 2 Unit TH G 1 1 CONTROLLER BLU 1 1 2P 2 2 2 2 HR Heater REMOCON REMOCON 43 5 5P FM RY relay 2 1 21 6 1 3 4 5 2 1 2 3 4 5 1 12 1 3 4 5 2 1 2 3 4 5 1 12 Capacitor PNK BRN Heater assy 1 2 1 2 Connector 6 2 1 3 4 5
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For parts or service contact SFS Corporation: 1200 West Artesia Blvd., Compton, California 90220 CORPORATION In Canada SANYO Canada Inc.: Toronto, Ont. M4H 1M6 H407/12M Printed in U.S.A. 1991/Nov./12M Printed in U.S.A. WM–700700
