WORK PLANS - Laserfiche WebLink

Home Browse Search

DUCTLESS SPLIT SYSTEM AC UNITS Section 15865 15-1207 F. Oil Loops and Double Risers: Provide to assure successful operation. 2.03 PKA SERIES DUCTLESS SPLIT SYSTEM AIR CONDITIONER A. General: 1. The Air Conditioner system shall be a Mitsubishi Electric split system with Variable Speed Inverter Compressor technology. The system shall consist of a wall mounted indoor section with wired, wall mounted controller and a horizontal discharge, single phase outdoor unit. 2. Provide model and capacity to be as scheduled on drawings. a. Cooling performance shall be based on 80°F DB, 67°F WB for the indoor unit and 95°F DB, 75°F WB for the outdoor unit. 3. A dry air holding charge shall be provided in the indoor section. 4. The outdoor unit shall be pre -charged with R -410a refrigerant for 70 feet of refrigerant tubing. a. Where required, provide charge system with extra refrigerant. 5. System efficiency shall meet or exceed scheduled SEER. B. Indoor Unit Cabinet: 1. The indoor unit cabinet shall be wall mounted by means of a factory supplied mounting plate. The cabinet shall be formed from high strength molded plastic with front panel access for filter. 2. The indoor unit shall be factory assembled, wired and tested. Contained within the unit shall be all factory wiring and internal piping, control circuit board and fan motor. 3. The unit in conjunction with the wired, wall mounted controller shall have a self- diagnostic function, 3 -minute time delay mechanism, an auto restart function, and a test run switch. 4. Indoor unit and refrigerant pipes shall be purged with dry nitrogen before shipment from the factory. C. Indoor Unit Fan: 1. The evaporator fan shall be high performance, double inlet, forward curve, direct drive sirocco fan with a single motor 2. The fans shall be statically and dynamically balanced and run on a motor with permanently lubricated bearings. 3. The indoor fan shall have fan speeds as listed on drawings. a. Unless noted otherwise, set fan speed on low. D. Indoor Unit Vane 1. There shall be a motorized horizontal vane to automatically direct air flow in a horizontal and downward direction for uniform air distribution. The horizontal vane shall significantly decrease downward air resistance for lower noise levels, and shall close the outlet port when operation is stopped. 2. There shall also be a set of vertical vanes to provide horizontal swing airflow movement selected by remote control. E. Indoor Unit Filter: 1. Return air shall be filtered by means of an easily removable washable filter. 3