Nortek Reznor VRA-4E Series, Установка, пусконаладка, обслуживание

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1712VRA ‐ 4EGBEN, pag.. 13/25
6.7 Air distribution system
Adjust the air outlet discharge louvers to provide a
satisfactory spread of the warm air. Direct the air
towards the floor avoiding blowing directly on people
who may be in the vicinity of the appliance.
ATTENTION :
If louver adjustment is carried out whilst the appliance is
hot wear gloves to avoid being burnt.
6.8 Air heater controls and operation
Check air heater operation after all adjustments
have been carried out. Set the temperature control
above ambient temperature.
VRA-4E air heaters are fitted with a pressure
sensitive, combustion air safety control that monitors
the combustion airflow. The control operates with the
settings as specified in the parts list (settings are for
sea level installations)
When the combustion air safety control closes,
verifying airflow, the gas control valve will open and
the burner will light. When insufficient airflow, the
burner will extinguish until the airflow returns to the
acceptable level. Wait approximately 30 seconds
after the burner has lit, the time delay relay will
activate the thermal fan control which will energize
the fan motor.
Continue to operate the air heater for several minutes
to ensure correct operation. Turn room thermostat to
its lowest setting.
The main burners should extinguish while the fan
continues to run to cool the air heater. The fan delay
relay will normally be de-energized and stop the fan
motor in approximately 45 seconds.
6.9 Handing over
Upon satisfactory completion of
commissioning and testing, hand the
instructions to the user or their
representative.
Advise the appropriate person how to safely
use and operate the air heater and describe
the use of appropriate external controls.
Ensure that the person understands how to
start the heater and how to turn it OFF.
Suggest that the instructions are placed close
to the air heater for future reference. In the
absence of an appropriate location fix them to
the gas service meter. Ensure they are not
placed where they may restrict the airflow
from the heater or where they may catch fire
from a hot surface. Advise the person who is
resuming responsibility that for continued safe
operation the air heater should be serviced at
least once a year.