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CAC CASSETTE DUCTLESS SPLIT SYSTEM
EVAPORATOR
STRAIGHT COOL
Nominal Circuit Capacities:
9,000 - 12,000 - 18,000 - 24,000
30,000 - 36,000 Btuh
9/12 Model Shown
CAC
Enviromaster International LLC
5780 Success Dr.
An ISO 9001-2000 Certified Company
Rome, NY 13440
www.enviromaster.com
P/N# 240006022 Rev. 1.1 [08/06]
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Table of Contents
Related Manuals for EMI CAC
Summary of Contents for EMI CAC
- Page 1 CAC CASSETTE DUCTLESS SPLIT SYSTEM EVAPORATOR STRAIGHT COOL Nominal Circuit Capacities: 9,000 - 12,000 - 18,000 - 24,000 30,000 - 36,000 Btuh 9/12 Model Shown Enviromaster International LLC 5780 Success Dr. An ISO 9001-2000 Certified Company Rome, NY 13440 www.enviromaster.com...
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Page 2: Safety Instructions
INSTALLATION, OPERATION AND MAINTENANCE MANUAL This manual is intended as an aid to a qualified service personnel for proper installation, operation, and maintenance of EMI AmericaSeries high efficiency evaporators. Carefully read these instructions before attempting installation or operation. Failure to follow these instructions may result in improper installation, operation, service, or maintenance, possibly resulting in fire, electrical shock, property damage, personal injury, or death. -
Page 3: Product Description
field installed electric heat kits available); fresh air inlet and branch duct knockouts; and motorized air vanes (18-36 only). The CAC accepts a 24 Volt thermo- stat control (thermostat not included). De- signed for low noise levels, easy installation... -
Page 4: Preparation For Installation
CAC CASSETTE CONTROLS AND COMPONENTS Electromechanical Operation (Stan- dard): An optional thermostat can be ob- tained through EMI or your local distributor. NOTE: make sure the thermostat is suitable for unit operation (i.e., cool- ing only, cooling/electric heat, etc.) Filters: Metal framed filters are fitted. These are reusable and may be vacuum cleaned. - Page 5 Unit Shown Hing The large units have three hinged grills and three fi lters. CAC Cassette Evaporator BLANKING OFF (Optional) 2. Once the grille(s) and fi lter(s) are re- moved turn the fascia over so the poly- styrene insulation is exposed.
- Page 6 (“4” in the capacity decoding field) the piston will need relacement only on the 24,000 Btuh zone. * Your EMI evaporator unit contains the appropriate piston for your model. Refer to this document to determine if a change is required based on your condenser rating. If your match is not listed below no piston change is required.
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Page 7: Ceiling Opening
CAC CASSETTE CHASSIS POSITIONING AND INSTALLATION ELECTROMECHANICAL THERMOSTAT An optional thermostat can be obtained through EMI or your local distributor. In addition to positioning the Cassette cor- rectly, it is very important to locate the wall mounted thermostat in the optimum posi- tion to ensure good temperature control. - Page 8 Fold bracket along perforations CAC Cassette Evaporator www.enviromaster.com...
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Page 9: Condensate Piping
Cassettes. It is also rec- ommended to have an air vent in the condensate pipe work to prevent any air locks. CAC Cassette Evaporator CONDENSATE PIPING Duct collars: Branch duct and fresh air duct collars can be attached to the Cas-... -
Page 10: Refrigeration Piping
NOTE: Refrigerant and condensate pipes should be insulated right up to the Cassette chassis. The CAC is equipped with a Flo-Rater/ Piston Expansion device. Connections are sweat type. The suction line (large) must be insulated the entire length with closed cell, foam tube insulation. - Page 11 CAC CASSETTE EVAPORATOR FASCIA INSTALLATION INSTRUCTIONS 1. To install the four fascia mounting bolts: a) Remove the bolts and wash- ers from the supplied kit bag. b) Put washers onto the bolts. c) Screw the mounting bolt with washer into the chassis leav- ing approximately 1”...
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Page 12: Electrical Wiring
CAC CASSETTE EVAPORATOR INSTALLATION INSTRUCTIONS The standard unit Voltage is 208/230V (60Hz, 1Ph). Check the unit’s rating plate for your models’ electrical requirements. • The wires should be capable of carry- ing the maximum load current under non-fault conditions at the stipulated Voltages. - Page 13 CAC CASSETTE EVAPORATOR INSTALLATION INSTRUCTIONS 1. Route the cable through the appropriate hole in the control box for the High Volt electrical wiring. High Volt Electric Cable Low Volt Electrical Connections 2. Secure the cable. 3. Refer to the wiring diagram (see below) to connect the ground wire to the ground lug.
- Page 14 CAC Cassette Evaporator Figure 1 � �� ��� ��� � ���� � � ���� � � ���� � ��...
- Page 15 Figure #4 • Adding water will activate the float switch and the pump. Water must flow regular- CAC Cassette Evaporator ly with condensate pump energized. If water does not, check the pipe slope or see if there are any pipe restrictions.
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Page 16: Refrigerant Processing
fi nal charge adjustments. Op- eration charts and charge tables can be found in the EMI Condenser IOMs. 1. Clean the ends of tubing and insert into 1. Clean the ends of tubing and insert into fi... - Page 17 CACA12 S2CA92 CACA12+CACA12 TOP DISCHARGE REFRIGERANT CHARGE CHART Circuit Capacity CAC Cassette Evaporator REFRIGERANT PROCESSING 8. Charge to proper weight, charge based on your feet of interconnect (see below). NOTE: Charging should be done with a dial-a-charge or weighed in with a scale.
- Page 18 Heat/Cool thermostat. Selecting a Thermostat “By Oth- ers”: When selecting a thermostat other than those offered by EMI, it is important to choose a 24V thermostat that matches your application. EMI equipment is com- patible with most mercury bulb, digital or power stealing thermostats.
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Page 19: Test Unit Performance Data Sheet
Suction out Evaporator Capacity Calculations DB - Temp Split at evap. Compressor Superheat Sub Cooling CAC Cassette Evaporator this information ready when calling. Make sure to include the Model Number, Serial Number, Date of Installation. Call our Technical Support Department @ 1-800-228-9364. -
Page 20: Maintenance
Service should be performed by a qualifi ed service agency. An annual sys- tem check is recommended. EMI units are designed and constructed for reliability and long life with minimal maintenance. To insure peak operating effi ciency: 1. -
Page 21: Troubleshooting Procedure
For CAC Air Handlers With Remote Thermostat Controls WARNING All service should be performed by a qualified service technician. Before re- moving access panels or control covers to expose moving parts of non-insulate live electrical components for service, disconnect all high Volt power supplies to both the indoor unit and outdoor unit. -
Page 22: Cooling Only Units
5kw = 22.3 amps, 3kw = 13.5 amps, 1.5kw = 6.9 amps. Units with Condensation Pumps: EMI CAC is equipped with an internal condensate pump capable of removing condensate up to a three foot vertical lift. Condensation generated by the evapo- rator will collect in the pumps’... - Page 23 If the switch was tripped there will be a “click” when it resets. A: CAC air handlers are equipped with an internal condensate pump with a high level safety switch. If the condensate reaches a critical level or if power is...
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Page 24: Frequently Asked Questions
65°F? If it is, then the condenser should be fitted with low ambient control so that the proper system pressures are maintained. NOTE: Due to EMI’s ongoing product development program, all designs and specifications are subject to change without notice. Model 09-12... - Page 25 Small Cabinet • CAC 9,000 - 12,000 FEATURE QTY. Optional Discharge Knockout Fresh Air Inlet Knockout Condensate Discharge Suction Liquid Condensate Pump Access CAC Cassette Evaporator CAC CASSETTE DIMENSIONS SIZE 3” Ø 1¼” x 2½” ½” Ø ½” Ø ¼” Ø...
- Page 26 Medium Cabinet • CAC 18,000 - 24,000 FEATURE QTY. Optional Discharge Knockout Fresh Air Inlet Knockout Condensate Discharge Suction Liquid Condensate Pump Access CAC Cassette Evaporator CAC CASSETTE DIMENSIONS 6.87” 4.37” SIZE 3.97” 3” Ø 1.63” 3” x 3” ½” Ø...
- Page 27 CAC CASSETTE DIMENSIONS Large Cabinet • CAC 30,000 - 36,000 FEATURE QTY. Optional Discharge Knockout Fresh Air Inlet Knockout Condensate Discharge Suction Liquid Condensate Pump Access CAC Cassette Evaporator 6.87” SIZE 3” Ø 1.63” 3” x 3” ½” Ø ¾” Ø...
- Page 28 CAC ELECTRICAL SPECIFICATIONS NOTE: Due to EMI’s ongoing product development program, all designs and specifications are subject to change without notice. Model # Volts/HZ/PH CAC09/12 208/230/60/1 CAC09/12 208/230/60/1 CAC18/24 208/230/60/1 CAC18/24 208/230/60/1 CAC30/36 208/230/60/1 0.5, 0.5 1/10, 1/10 CAC30/36 208/230/60/1 0.5, 0.5 1/10, 1/10...
- Page 29 CAC CASSETTE SYSTEM MATCHES SYSTEM OPTIONS WITH T2C TOP DISCHARGE Cassette(s) CACA24 CACA24 CACA12 + CACA24 CACA24 CACA12 + CACA24 SYSTEM OPTIONS WITH T3C TOP DISCHARGE Cassette(s) CACA12+CACA24 CACA12 CACA12 CACA12+CACA24 CACA12+CACA24 CACA12+CACA24 CACA12 CACA12 CACA12+CACA24 CACA12+CACA24 SYSTEM OPTIONS WITH T4C TOP DISCHARGE...
- Page 30 fitness for a particular purpose and all other warranties express or implied. The remedies provided for in this warranty are exclusive and shall constitute the only liabilities on the part of EMI including any statements made by any individual which shall be of no effect. FOR SERVICE OR REPAIR:...
- Page 31 EMI’S HIGH EFFICIENCY PRODUCT LINE WLC/WLH High Wall Evaporator S1C & S1H Single Zone S1C & S1H Single Zone Side Discharge CAC Cassette Evaporator EVAPORATORS CONDENSERS T2C, T3C & T4C 2, 3 & 4 Zone T2C, T3C & T4C 2, 3 & 4 Zone...
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