4
Key Description
Switch
Press 2s to enter the setting
Mode selection
Function description
Heating in the sun in the spring/ fall/ winter
LCD Thermostat
When presetting temperature is higher than indoor temperature.
Automatic mode
Sunshine-12am
12:00 am--- 3:00 pm
3pm--no Sunshine
Only for OS22/32/42
Keep heating
indoor air circularly
Heating outdoor fresh air
(Spring and autumn can
increase ventilation time)
Keep heating
indoor air circularly
For OS20/30/40
Just heating outdoor fresh air in the sun
In the process of heating indoor air, if the following conditions occur, the device will
automatically turn to heat the outdoor fresh air.
1. Outdoor air (moisture content) is dryer than indoor
and indoor relative humidity
≥75%
2.
Outdoor air is wetter than indoor air
and Indoor relative humidity
≤30%
3. When it is detected that the outdoor temperature is higher than the indoor temperature.
Humidity control mode
Sunshine-11am
11am--- no sunshine
Only for OS22/32/42
Keep heating
indoor air circularly
Heating outdoor fresh air (Spring and autumn
can increase ventilation time)
For OS20/30/40
Just heating outdoor fresh air in the sun
In the process of heating indoor air, if the following conditions occur, the device will
automatically turn to heat the outdoor fresh air.
1. Outdoor air (moisture content) is dryer
than indoor
and Indoor
relative humidity ≥70%
(
60%-75%
)
2. Outdoor air is wetter than indoor
and Indoor relative humidity
≤40%
(
30%-45%
)
;
3. When it is detected that the outdoor temperature is higher than the indoor temperature.
In the process of ventilation, if the following conditions occur, the fan stops working.
Outdoor air (moisture content) is wetter than indoor air
and indoor relative humidity
≥70%
Manual mode
Can set a time period to heat fresh air or air indoor
Heating fresh air mode
Just heating outdoor fresh air
Heating indoor air
mode
Keep heating indoor air circularly