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Фрагмент инструкции
• After doing a final system check using the Operation Charts (supplied on previous pages). Record results on Test Unit Data Sheet on page 26. The S1C/H and S2C outdoor sections are the compressor bearing units of the system. It operates at the command of the indoor section or room thermostat. Therefore, the system operation will be described in the manual pertaining to the indoor section. EMI units are designed and constructed for reliability and long life with minimal maintenance. You can assure peak operating efficiency by regularly inspecting for free air passage into and through the coil. If debris collects on the air coil, it should be cleaned by "back-flushing" with a spray of water or vacuuming. TURN OFF POWER SUPPLY FIRST. Outdoor units may be cleaned or waxed if desired. Use a non-abrasive car wax (on metal surfaces only). EMI America Series condensers are designed to operate with EMI America Series evaporators. Both the condenser (outdoor unit) and evaporator (indoor unit) have a high volt service connection. Each is to be independently connected to the electrical service panel. (See the unit name plate for the correct breaker type and size). The outdoor and indoor units are also connected to each other through a low volt interconnect wiring. A 24v transformer located in the indoor unit provides the low volt power source. operation anD maintenanCe Single Zone anD DUal Zone ConDenSer SeqUenCe oF operation • Remove gauge set. Mount all access panels and make sure they are properly secured. • Make final visual inspection and repair any deficiencies. note: A hard start kit may be required for units in low voltage applications. This unit is equipped with a permanently lubricated motor. Although oiling is not necessary, adding a few drops through the oiling ports twice yearly will extend the life of the motor. Do not over oil. Panels should remain on the unit at all times. Service should be performed by a QUALIFIED service agency only. SpeCiFiC CHangeS All EMI products are subject to ongoing development programs so design and specifications may change without notice. Please consult the factory for more information. Straight cool condensers are designed to operate as a single stage cooling unit. Heat pump condensers are designed to operate as a single stage cooling two stage heating unit. For proper operation the unit must be matched with an appropriate EMI indoor unit with unit mounted controls and/or wall mounted thermostat. For two-stage heating operation the indoor unit must be equipped with an electric strip heater. Side Discharge Condensers 19 Single-Zone anD DUal-Zone SeqUenCe oF operation Single-Zone anD DUal-Zone SeqUenCe oF operation Note: For remote wall mounted ther- mostat operation be sure to select EMI p/n 240004180 or a suitable 24v, two sage heating, heat pump thermostat. Condenser operation: The transformer located in the indoor unit provides 24V, low-volt control power to the condenser (outdoor unit). This can be measured across low-volt terminals “R” and “C”. Single zone heat pump condensers utilize a reversing valve to provide reverse cycle operation. Therefore the outdoor unit will act as either a condenser or an evaporator there-by providing comfort cooling or heating to the indoor space. The reversing valve is energized in cooling. Should the valve fail to actuate, the system will default to the heating mode of operation. Cooling operation, single-zone and dual-zone: Cooling operation requires that the control (either unit mount or remote wall mount thermostat) make a connection between low-volt terminals “R” and “Y” along with “R” and “O” (heat pumps only). When the indoor control is placed in cooling mode, with the set point temperature below the room temperature, the reversing valve will energize (R & O heat pumps only) along with the compressor and outdoor fan (R & Y). When the indoor control is satisfied and the room temperature falls below the set temperature, the compressor and fan will de-energize. The anti-short cycle timer (ASCT) will prevent the compressor from re-starting for three minutes. Heating operation (heat pumps only): Heating operation requires that the control (either unit mount or remote wall mount, heat pump thermostat) make a connection between low-Volt terminals “R” and “Y” only. When the indoor control is placed in heating mode, with the set point temperature above room temperature, the compressor and outdoor fan (R & Y) will energize. When the indoor control is satisfied and the room temperature rises above the set temperature, the compressor and fan will de-energize. The anti-short cycle timer (ASCT) will prevent the compressor from re-starting for three minutes. Defrost controls with short cycle protection (heat pumps only): The unit is equipped with a logic control circuit designed to keep system operating at peek efficiency. The 24v circuit provides control to the indoor and outdoor systems including a three minute, anti-short ...
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