10 - EN
2.6 Explanation of VENTILATION SETTINGS
menu
The building regulations describe how much fresh
supply air must be provided to each room. The
VENTILATION SETTINGS must be programmed in such
a way that the unit can supply the maximum necessary
volume of fresh air for the entire building. If only HIGH
SETTING is programmed, the unit will automatically
set MEDIUM SETTING to 66% of HIGH SETTING, and
LOW SETTING to 33% of HIGH SETTING. If MEDIUM
SETTING or LOW SETTING is programmed, this
automatic link will be lost. To recover the link, all the
unit's FACTORY SETTINGS must be restored via the
FACTORY RESET function.
FACTORY SETTINGS
ComfoAir E
350
HIGH SETTING
315 m
3
/h
MEDIUM SETTING
205 m
3
/h
LOW SETTING
105 m
3
/h
Once the settings screen or valve setup screen is visible,
the unit switches off all automatic programmes and runs
on the set value so that all valves can be properly set.
After touching the screen, you have 60 minutes to set all
valves. The unit then switches back automatically to the
normal operating mode and the main screen. Every time
the screen is touched, the 60-minute timer is reset. If the
settings screen or valve setup screen is exited manually,
the unit returns directly to the normal operating mode
and after 15 minutes without being touched the unit
returns automatically to the main screen.
2.7 Explanation of REPLACE FILTER warning
The filter warning appears by default 21 days before the
filters need to be replaced. This gives the user enough
time to purchase new filters before the dirty filters are
to be replaced. It is possible to set the alert to appear
earlier by increasing the number of filter order days in
the service menu FILTER ALERT. The filters must be
replaced at least once every 180 days.
2.8 Explanation of ALTITUDE menu
This value compensates for the influence of altitude on
the air volume. In the “Altitude” menu, the altitude of the
installation location of the unit must be specified.
2.9 Explanation of TEMPERATURE menu
The unit is equipped with 5 temperature sensors. The
readout of the current value of these sensors appears in
the TEMPERATURE menu in the sequence given below.
Meaning
OUTDOOR AIR
TEMPERATURE
(TEMP SENSOR 20)
Outdoor air temperature prior to
the preheater
EXHAUST AIR TEMPERATURE
(TEMP SENSOR T12)
Exhaust air temperature
EXTRACT AIR TEMPERATURE
(TEMP SENSOR T11)
Extract air temperature
SUPPLY AIR TEMPERATURE
(TEMP SENSOR T22)
Supply air temperature
PREHEATER TEMPERATURE
(TEMP SENSOR T21)
Outdoor air temperature after the
preheater.
2.10 Explanation of FANS menu
The unit is equipped with 2 fans. The readout of the
current value of these fans appears in the FANS menu in
the sequence given below.
Meaning
SUPPLY FAN [RPM]
(FAN 22)
Speed of the supply fan.
EXHAUST FAN [RPM]
(FAN 12)
Speed of the exhaust fan.
SUPPLY FAN [%]
(FAN 22)
Control percentage (fan duty) of
the supply fan.
EXHAUST FAN [%]
(FAN 12)
Control percentage (fan duty) of
the exhaust fan.
SUPPLY FAN [m
3
/h]
(FAN 22)
Airflow rate (flow) of the supply
fan.
EXHAUST FAN [m
3
/h]
(FAN 12)
Airflow rate (flow) of the exhaust
fan.
10001047667-0619-zw-zw-A4 ComfoAir E 350 GEN2 Service Zehnder-SI_EN.indd 10
11-07-19 13:30
