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Instruções de Operação Bryant, Modelo 583B

Fabricante : Bryant
Arquivo Tamanho: 786.62 kb
Arquivo Nome : ii583b-24-3.pdf
Língua de Ensino: en
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If circuit R to G is open (0-v.) for maximum heating comfort, the motor delivers reduced airflow to maximize the temperature and minimize the draft effect of the heated air leaving the unit. ICM FIOP START-UP ICM General Start Up CHECKING AND ADJUSTING REFRIGERANT CHARGE The refrigerant system is fully charged with Puron® (R-410A) refrigerant, and is tested and factory sealed. NOTE: Adjustment of the refrigerant charge is not required UNLESS the unit is suspected of not having the proper R-410A charge. The charging label and the tables shown refer to system temperatures and pressures. The temperatures and pressures are calculated at rated airflow. When charging unit, set to rated airflow. A refrigerant charging chart label is attached to the outside of the compressor access door. The chart includes the required suction line temperature at given suction line pressures and outdoor ambients. An accurate superheat, thermocouple-or thermistor-type thermometer, and gage manifold are required when using the superheat charging method for evaluating the unit charge. Do not use mercury or small dial-type thermometers because they are not adequate for this type of measurement IMPORTANT: When evaluating the refrigerant charge, an indicated adjustment to the specified factory charge must always be very minimal. If a substantial adjustment is indicated, an abnormal condition exists somewhere in the cooling system, such as insufficient airflow across either one or both coils. I. 583B START-UP (ICM FIOP) CHECKING COOLING CONTROL OPERATION-Start and check the unit for proper cooling control operation as follows: (1.) Place room thermostat SYSTEM switch in OFF position. Observe that blower motor starts when FAN switch is placed in ON position and shuts down when FAN switch is placed in AUTO position. Note fan delay time setting selected on the Easy Select™ board. (See Easy Select Section.) (2.) Place SYSTEM switch in COOL position and FAN switch in AUTO position. Set cooling control below room temperature. Observe that compressor, condenser fan, and evaporator blower motors start. Observe that cooling cycle shuts down when control setting is satisfied. The evaporator fan will continue to run for the time setting selected on Easy Select™ board. (See Easy Select Section.) (3.) When using an auto-changeover room thermostat, place both SYSTEM and FAN switches in AUTO position. Observe that unit operates in heating mode when temperature control is set to “call for heating” (above room temperature) and operates in cooling mode when temperature control is set to “call for cooling” (below room temperature). AIRFLOW AND TEMPERATURE RISE-The heating section for each size unit is designed and approved for heating operation within the temperature rise range stamped on the unit rating plate. Table 15 shows the approved temperature rise range for each heating input, and the air delivery (CFM) at various temperature rise ranges. The heating operation airflow must produce a temperature rise that falls with in the approved range. Refer to Indoor Airflow and Airflow Tables on the following pages to adjust heating airflow when required. CHECK HEATING CONTROL-Start and check the unit for proper heating control operation as follows. (see furnace lighting instructions located inside burner or blower access panel.): (1.) Place room thermostat SYSTEM switch in the HEAT position and the FAN switch in the AUTO position. (2.) Set the heating temperature control of the thermostat above room temperature. (3.) The induced-draft motor will start. (4.) After a call for heating, the main burner should light with in 5 sec. If the burners still do not light, this sequence is repeated. If the burners do not light within 15 minutes from the initial call for heat, there is a lockout. To reset the lockout control, break the 24-v. power to W. (5.) The indoor fan will turn on 45 sec after the flame has been established. The indoor fan will turn off according to time delay selected on the Easy Select™ board (See Easy Select Section) after the thermostat has been satisfied. II. 683B START-UP (ICM FIOP) Also refer to the Thermidistat™ instructions for start up and check out of the system. (1.) FAN OPERATION— The fan button on Thermidistat™ switches fan icon between AUTO and ON. While ON is displayed, output will be on, turning fan on. Allow up to 10 sec. after button is pressed for fan to turn on and off. the fan will continue to run for the time setting selected on the Easy Select™ board after AUTO icon is displayed. (2.) COOLING MODE— Press MODE button on the Thermidistat™ until COOL icon is displayed. Cooling begins within 10 sec. and —10— remains on for 4 minutes. Observe that compressor, outdoor fan and indoor blower motors start after the call for Cooling. At the end of 4 minutes, the cooling cycle stops and the MODE reverts back to OFF. The Indoor Blower continues to run for the time selected on the Easy Select™ board after OFF icon is displayed. (3.) HEAT PUMP...

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