Évaluations - 2, GPA: 3.5
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The heating capacity at 70. F indoor and17. F outdoor shall be 5,300 Btuh. PART FOUR “INDOOR UNIT” The indoor unit shall be factory assembled, wired and contain a low voltage transformer. The cabinet shall be fabricated of G60 galvannealed steel, finished in “off-white” with corrosion inhibiting polyester powder-coated paint. The evaporator fans shall be a forward curve centrifugal type, dynamically balanced and directly mounted to the motor shafts. The motor shall be PSC type with internal thermal overload protection. Return air shall be filtered by means of an easily removable electrostatic washable filter. The indoor unit shall have fresh air capability through the back of the unit. The evaporator coil shall be of nonferrous construction with louvered fins bonded to rifled copper tubing. The tubing shall have inner grooves for high efficiency heat exchange. All tube joints shall be brazed with phoscopper or silver alloy. The coil shall be pressure tested at the factory. A condensate pan and drain shall be provided under the coil. System refrigerant flow shall be controlled by means of an orifice piston in the indoor unit. The unit electrical power shall be 208/230 Volts, 1 phase, 60 Hertz. The system shall be capable of satisfactory operation within voltage limits of 208/230 +/- 10% Volts. PART FIVE “CONTROL SYSTEM” The control system shall consist of unit-mounted infrared compatible controls. Interconnect low-voltage Wiring shall run from indoor unit to outdoor unit direct. NO SPLICES. When running low voltage wiring a double insulated, 5-wire 18 gage cable is mandatory or use shielded 5-wire cable. The microprocessor shall be factory wired and located within the indoor unit. It shall have the capability of sensing return air temperature and indoor coil temperature; large .” LCD backlit display; operational range adjustable between 55. F and 95. F in one-degree increments; anti-short cycle compressor protection; minimum compressor run time; fan purge, fan remains on for 60 seconds after heat/cool call is dropped for improved efficiency; freeze protection to prevent evaporator freeze ups; annunciation provides an audio feedback when the control settings are changed; universal control board allows the unit to operate with either a straight cool or heat pump condenser; two stage heating when optional electric heat and heat pump condenser emi@enviromaster.com EMI ENGINEERING SUBMITTAL DFPH093 (FHP12-SHC09) EMI ENGINEERING SUBMITTAL DFPH093 (FHP12-SHC09) are selected; fan operation of auto (cycling), high and low (constant), auto fan operation automatically selects fan speed according to heating or cooling demand; dry mode operates cooling and electric heat simultaneously to remove humidity, optional electric heat must be selected; test operation allows ease of testing after installation (all timers are eliminated); non-volatile back-up memory, control settings are maintained for an indefinite period during a power outage, when power is restored the equipment will resume operation after a three-minute compressor time delay; optional hand held infra-red controller. The control voltage between the indoor unit and the outdoor unit shall be 24 Volts A.C. The 24 Volts shall be generated from the indoor unit’s 24 Volt 40VA transformer. PART SIX “OUTDOOR UNIT” The outdoor unit shall be completely factory assembled, piped and wired. The cabinet shall be fabricated of G60 galvannealed steel, finished in “off-white” with corrosion inhibiting polyester powder-coated paint. The unit shall be furnished with one (1) direct drive, propeller type fan arranged for horizontal discharge. The motor shall have inherent protection, be of the permanently lubricated type, and resiliently mounted for quiet operation. The fan shall be provided with a guard to prevent contact with moving parts. The compressor shall be of the high-performance rotary type with Duratec package which consists of an oversized accumulator, factory installed solid core filter drier and thermal overloads. The compressor shall be mounted so as to avoid the transmission of vibration. The refrigeration system shall be equipped with a loss of charge switch, and have the capability to operate with a maximum height difference of 35 feet and overall refrigerant tubing length of 100 feet between indoor and outdoor sections without the need for line size changes or additional oil. The condenser coil shall be of nonferrous construction with louvered fins bonded to rifled copper tubing. The unit shall be controlled by the microprocessor located in the indoor matching unit. The heating expansion is controlled by a TXV in the outdoor unit. The unit electrical power shall be 208/230 Volts, 1 phase, 60 Hertz. The system shall be capable of satisfactory operation within voltage limits of 208/230 Volts +/- 10%. PART SEVEN “OPTIONAL EQUIPMENT” • Hand Held Infrared Remote Controller – used to command the unit-mounted controls. • 24V Wall Thermostat C...