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EMI DUCTLESS SPLIT SYSTEM
CASSETTE EVAPORATOR
INSTALLATION MANUAL/OPERATING INSTRUCTIONS
P/N# 240-4235 Rev. 1.6 [1/05]
SPARE PARTS: For ease of identification when ordering
spare parts or contacting Enviromaster International LLC
about your unit, please quote the model number and serial
number. This information can be found on the rating plate
attached to your unit.
PRODUCT DESCRIPTION
The EMI Cassette series is available in nominal capacities
of 9,000 to 48,000 Btuh in DX refrigeration and reve
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displayed on the fascia mounted receiver. The microproces- loosening the four M5 screws retaining the fascia in place. sor also limits the number of compressor starts per hour to The fascia can now be slid sideways and pulled away from reduce wear on the compressor. the chassis. When removing the Cassette chassis from the box the four corner brackets should be utilized for lifting. In The infrared transmitter is used to switch the unit on/off, order to protect the fascia from dirt and damage, it
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1. Position the thermostat approximately 5 ft. above floor OUTER CASE level. INSULATION 2. Do not position thermostat where it can be directly CASSETTE CASE affected by the unit’s discharge air stream. INNER CASE INSULATION 3. Avoid external walls and drafts from windows and doors. 4. Avoid positioning near shelves and curtains as these restrict air movement. 5. Avoid heat sources (direct sunlight, heaters, dimmer FALSE CEILING switches, etc.) GUIDE IN POSITION CEILING OPENING: Before beginning
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3. Condensate pipework should slope downwards in the FASCIA BLANKING PIECE direction of water flow with a minimum gradient of (1” per 10’). There must not be any uphill gradients other than in the first 18” of pipework from the Cassette. 4. When multiple Cassettes are connected to a common condensate drain, ensure the drain is large enough to cope with the volume of condensate from several SECTION THROUGH FASCIA Cassettes. It is also recommended to have an air vent in Before tightening the fasci
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ELECTRICAL SPECIFICATIONS STANDARD UNIT DATA SMALL MEDIUM LARGE POWER SUPPLY 230V/1PH/60HZ 230V/1PH/60HZ 230V/1PH/60HZ FULL LOAD AMPS A 0.4 0.6 0.9 MIN. CIRCUIT AMPACITY (MCA) A 0.5 0.75 1.13 REC. FUSE A 151515 1 WITH OPTIONAL ELECTRIC HEAT SMALL MEDIUM LARGE POWER SUPPLY 230V/1PH/60HZ 230V/1PH/60HZ 230V/1PH/60HZ ELECTRIC HEAT CAPACITY KW 1.5 3.0 5.0 HEATER AMPS A 6.52 13.1 21.7 FULL LOAD AMPS A 7.0 13.7 22.6 MIN. CIRCUIT AMPACITY (MCA) A 8.8 17.1 28.3 REC. FUSE WITH HEAT A 15 20 30 2 WITH OPTIO
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START UP PROCEDURES 8. For microprocessor controlled units, check that Once the above pre-start checks have been carried out sat- the display panel cable is properly connected to isfactorily, the main start up operation can begin. the microprocessor main circuit board and that the jumper links are correctly set (refer to unit wiring IMPORTANT: The jumper links referenced in step schematic). If the links are set incorrectly, remove 8 must be correctly set before applying mains main power before m
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EMI CASSETTE MECHANICAL DATA NOTE: Due to EMI’s ongoing product development program, all designs and specifications are subject to change without notice. CAH/W TECHNICAL DATA REFRIGERATION 09-12 15 18-24 30-36 42-48 NUMBER OF CIRCUITS 1 1 1 1 1 REFRIGERANT TYPE R22 R22 R22 R22 R22 CABINET DIMENSIONS 09-12 15 18-24 30-36 42-48 HEIGHT 10-3/4" 9-1/2" 9-1/2" 11-1/2" 11-1/2" WIDTH 22-1/2" 32-1/4" 32-1/4" 44-1/2" 44-1/2" DEPTH 22-1/2" 32-1/4" 32-1/4" 32-1/4" 32-1/4" WEIGHT 40 LBS. 64 LBS. 64 LBS. 97 L
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EMI CASSETTE DIMENSIONS SMALL CABINET • CAH 9,000 - 12,000 • CAHW 9,000 ONLY • CAF 8,000 - 12,000 • CAF4 8,000 ONLY ENVIROMASTER INTERNATIONAL LLC 8 EMI@ENVIROMASTER.COM
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EMI CASSETTE DIMENSIONS MEDIUM CABINET • CAH 15,000 - 24,000 • CAHW 12,000 - 24,000 • CAF 18,000 - 20,000 • CAF4 12,000 - 20,000 LARGE CABINET • CAH/W 30,000 - 48,000 • CAF/4 33,000 - 36,000 CASSETTE DIMENSIONS (INCHES) SIZE A BCD E F G H J K L M N MEDIUM 11 37 37 1¾ 32¾ 32¾ 2¾ ½ Ø 5 3¼ 9½ ¾ 33¼ LARGE 13 49¼ 37 1¾ 32¾ 45 2¾ ½ Ø 6 13¼ 9½ ¾ 45½ ENVIROMASTER INTERNATIONAL LLC 9 EMI@ENVIROMASTER.COM
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MICROPROCESSOR CONTROLLER The following pages contain a brief overview of the optional ping and starting is also included to allow refrigerant pres- cassette microprocessor control system and its components. sures to equalize between high and low sides during the The Infra-Red Remote Control manual is available from the compressor off period. unit manufacturer and provides a more comprehensive ex- planation of the operation and application of the Cassette IMPORTANT: Before applying main power t
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THE INFRARED TRANSMITTER STANDARD HAND HELD TRANSMITTER: Small, light and practically de- signed, the hand held transmitter takes 2 AAA batteries that can be easily fitted by removing the sliding lid on the underside of the transmitter. Please pay attention to the polarity and correct orientation of the batteries during fitting. When using the infrared handheld transmitter, always point the transmitter head directly at the receiver. Use the On/Send button to transmit settings to the microprocess
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NOTE: Display will stop flashing after 15 seconds. SETTING UP THE BUILT-IN TIME CLOCK 2. Select Program 1 by pressing (+) or (-). “Program 1” and “Start Time will flash. HOW TO SET THE PRESENT TIME 1. Press CLK/Timer: “Clock Set” highlights. NOTE: Display will stop flashing after 15 seconds. 3. Press (+) or (-) to select and change hours. 2. Select Hour with either (+) or (-). figure will flash. 4. Press CLK/Timer to move to minutes. 3. Press (+) or (-) to change hour. 5. Repeat steps 3 and 4.
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IMPORTANT: As of 12/01/04 EMI air handlers will be manu- UNIT START UP - INDOOR UNIT factured with a low Volt transformer installed. At the same time, EMI outdoor condensers will be manufactures with- CONTROL CIRCUIT CHECKS (DX Units) out a low Volt transformer. When connecting an EMI evapo- NOTE: Apply power to the Condensing Unit’s crankcase rator to a non-EMI condenser, check to ensure that there is a heater for 24 hours before start up to boil off any liquid that 24V control transformer in e
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TROUBLESHOOTING SECTION TRANSMITTER FAILURE (MICRO UNITS ONLY). Try new RED ALARM LED FLASHING AT 1 SECOND batteries first, if receiver bleeps on transmitting signal, trans- INTERVALS (Microprocessor units only) mitter is OK. If no response press On/Off button on unit fascia. If the unit responds to the On/Off button transmitter POSSIBLE CAUSES/REMEDIES is faulty. FAULTY FLOAT SWITCH. See section “Condensate High MICROPROCESSOR FAILURE (MICRO UNITS ONLY). The Level.” microprocessor is the least
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TROUBLESHOOTING SECTION CONDENSATE PUMP BLOCKED OR FAILED. See sec- HIGH CONDENSATE LEVEL TRIP. Drain the condensate tion “Water Leaking From Unit” tray and investigate. See section “Condensate high Level/” erating pressures. Check filter condition. (See maintenance COIL FREEZE UP. A coil freeze condition may have caused instructions for more information). excessive condensate to collect in the drip tray. See sec- tion “Freeze Protection.” SENSOR FAILURE (MICRO UNITS ONLY). If any of the sensors
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TROUBLESHOOTING SECTION NO HEATING (Electric Heat) FANS WILL NOT RUN POSSIBLE CAUSES/REMEDIES POSSIBLE CAUSES/REMEDIES INCORRECT MODE SETTING (MICRO UNITS ONLY) – LOOSE WIRE – Check all fan wire connections. Use unit’s Check that the transmitter Mode is set to Heat or Auto Mode. electrical schematic to verify that fan is wired correctly. SET POINT TOO LOW – Check the set point on the trans- FAULTY FAN CAPACITOR – Check fan capacitors, replace mitter or wall mounted thermostat and adjust if neces
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MAINTENANCE EVERY 3 MONTHS: Check the air filter condition and clean 3. Remove the electrical panel lid and disconnect the if necessary (see below). fan connections from within the electrical panel. EVERY 6 MONTHS: Same as 3 months plus clean conden- 4. Rotate the fan by hand until two M6 nuts are visible sate tray with biocide suitable for polystyrene and clean fas- through the fan mounting access holes. Remove cia. the two nuts. EVERY 12 MONTHS: Same as 6 months plus check all 5. Rotate the fa
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APPENDIX A - WIRING CHARTS AND INSTRUCTIONS TERMINAL BLOCK INSTRUCTION FOR THE CONNECTION OF HIGH/LOW VOLTAGE WIRES When connecting line and/or low voltage wires to the CAH terminal block(s) a 3/32-screw driver (thermostat type) is required. 1. Insert the screwdriver into the square hole until you “hit bottom.” This will open the terminal block so that it will accept your wire(s). 2. Insert the stripped wire into the oval or round hole. 3. Remove screwdriver to allow the terminal block to “clam
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APPENDIX B - EXPLODED UNIT DRAWING AND PARTS LIST SMALL CABINET • CAH 9,000 - 12,000 8 • CAHW 9,000 ONLY 22 1 6 • CAF 8,000 - 12,000 7 • CAF4 8,000 ONLY 20 21 2 14 3 10 9 18 19 5 4 10 12 13 16 11 23 17 1. Cassette Chassis 2. Evaporator Assembly 15 3. Electric Heater Element Assembly 4. Condensate Tray 5. Condensate Tray Supports (2) 6. Condensate Pump 7. High Level Switch 8. Condensate Pump Assembly 9. Fan/Motor Assembly 10. Coil/Return Air Sensors 11. Grille 12. Label 13. Air Deflector Vanes (
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APPENDIX C - EXPLODED UNIT DRAWING AND PARTS LIST MEDIUM CABINET 1 • CAH 15,000 - 24,000 5 • CAHW 12,000 - 24,000 • CAF 18,000 - 20,000 6 • CAF4 12,000 - 20,000 LARGE CABINET 2 • CAH/W 30,000 - 48,000 • CAF/4 33,000 - 36,000 20 19 3 7 4 18 9 8 10 11 17 16 12 1. Cassette Chassis 2. Evaporator Coil 3. Condensate Tray 13 4. Condensate Tray Support 5. Condensate Pump 14 6. High Level Switch 15 7. Fan & Motor Assembly 8. Fan Inlet Ring 9. Grille 10. Infrared Receiver 11. Vane 12. Va
