Bard CMA-40 Manuals

Page 1 of 4 The purpose of the CMA-40 kit is to allow the addition of sensors for connection to a DDC control system. These sensors include a dirty filter switch, a discharge air sensor, an airflow verification switch and a compressor current sensor. The CMA-40 kit is for use with Bard models W18-36AB wall-mount air conditioners. NOTE: This kit is not intended for units with mechanical dehumidification. Component mounting locations as depicted in these instructions will encounter obstructions if attempting to install on units with dehumidification. The CMA-40 consists of field-installable sensors for use with DDC control systems. The CMA-40 includes: • 7960-849 Supplemental Instructions • 910-1894 Airflow Switch Assembly • CMC-31 Dirty Filter Switch Kit • 910-1223 Compressor Current Sensor • 910-1224 Discharge (Supply) Air Sensor • 8607-021 Low Voltage Terminal Board • 7961-837 Terminal Board Label • 8611-033 7/8" Snap Bushing (2) • 1012-065 Phillips Head Screw (6) • 1012-086 Hex Head Screw (8) • 7961-312-0483 CMA-40 Unit I.D. Label Field-supplied tools needed: • Personal protection equipment, including gloves and safety glasses • 5/16" nut driver • Phillips head screwdriver • Small flat head screwdriver for securing wire in terminal blocks NOTE: Low ambient kit required for Balanced Climate and compressor operation below 60º F (sold separately). Bard Manufacturing Company, Inc. Bryan, Ohio 43506 www.bardhvac.com Manual: 7960-849 Supersedes: NEW Date: 9-17-19 CMA-40 DDC Sensors SUPPLEMENTAL INSTRUCTIONS Sharp metallic edges. Take care and wear appropriate protective devices to avoid accidental contact with sharp edges. Failure to do so can result in personal injury. ! CAUTION Exposed moving parts. Disconnect all electrical power before servicing. Failure to do so can result in severe injury or amputation. ! WARNING Electrical shock hazard. Disconnect the remote electric power supply or supplies before servicing. Failure to do so can result in serious injury or death. ! WARNING