Eng-6
6. Operation
Note
-
In the following cases, stop the Lossnay
and manually move the shutter knob to the
leftmost position (the closed position) to
close the shutter.
-If the outside air is cold, winds are strong, snow
or rain is falling heavily, there is heavy fog, or
fine snow is falling. (Water or snow may infiltrate
the Lossnay with the air supply, resulting in
weather damage.)
-During cleaning and inspections
1. Slide the shutter knob to the open
position.
Note
-
Make sure that the shutter knob must be
located in the open position, and then
operate the unit.
2. Operation
For VL-50S
2
-E
Switching operating modes (airflow)
Pull the cord to switch from HI to LO to Off.
HI operation
LO operation Off
(Operation indicator lights.) (Operation indicator
goes out.)
For VL-50ES
2
-E
Using the control switches.
* The switches shown above are only an example.
Operations and indicators may vary depending
on the switches installed.
Shutter knob
OPEN
position
CLOSE
position
Power switch
(On-Off)
Airflow switch
(Hi-Lo fan speed)
3. Operation in Exhaust only mode
What is Exhaust only mode?
When the outside air temperature becomes low
in winter and intake air (air supply) feels cold,
or there is a concern about dew condensation
on the unit, change the mode to Exhaust only
mode.
By closing the shutter at the air supply side
and half closing the shutter at the exhaust side,
operation with suppressed supply air (cold
outside air) is performed.
In order to prevent freezing of the heat
exchanger, if the outside air temperature
becomes -10 °C or lower, make sure to operate
in Exhaust only mode.
(*For a guide to outside air temperatures, refer
to page 3.)
How to operate Exhaust only mode
Adjust the shutter knob to the Exhaust only
position.
- Move the shutter knob to the CLOSE position
and then slowly move to the OPEN position and
stop at the Exhaust only position.
Note
-
When Exhaust only mode is no longer
necessary, return the shutter knob to the
OPEN position.
Shutter knob
OPEN
position
CLOSE
position
Exhaust only
position
