SystemAir Villavent CD

- When selecting water-born heating, choose ”YES” . Confirm
.
- When selecting cooling, choose ”Heater NO” and change to
”Cooling YES” .
Press (3 times) for return to level 1in the service menu,
(twice) to go one level up.
7.2 Frost protection (only when water heater is installed)
Move cursor to ”Frost protection” if adjusting temperature for frost
protection of the heater is necessary. Sensor for frost protection to be
installed in pocket in return water from the heater battery. Temperature
from factory is 7
o
C, But can be adjusted within the area 7 to 12
o
C.
Press when cursor points to ”Frost protection”.
Turn to wanted alarm level. Confirm .
7.3 Airflow
Turn until double cursor points to "Functions". Confirm .
Airflow
Turn until ”Airflow” is marked. Confirm .
"Airflow" is displayed: (EF = Extract SF = Supply)
Note! Airflow is given in l/s. On ”Norm”, within the area -20 to +20 %, you
can choose different airflows for supply and extract. Standard
setting is 0%,. Positive difference means higher extract airflow. On
”Max” and ”Min” it is only possible to choose airflow for extract fan.
Chosen difference on ”Norm” will automatically be maintained on
”Max” and ”Min”.
Change values as necessary . Confirm . When required
settings are confirmed, press "Back" (3 times) to return to
main menu, , twice = up one level.
7.4 Electrical heater
Electrical heater battery is standard. The function for water heater is then
automatically de-activated. If water-born heating is installed (see 7.1 and
7.2), the electrical heater must be de-activated.
Turn to ”Heater” . Confirm . The following is displayed:
Change to ”NO” . Confirm . Press (3 times)
to return to level 1 in the service menu, twice = up one level.
7.8 Analog inputs
The unit is fitted with various temperature sensors. Choose ”Analog input”
to read the actual temperatures.
Turn to ”Analog input”. Confirm . The following is displayed:
SS = Supply air temperature for constant supply air temperature.
Measured after the heater battery inside the unit.
NB! If water coil is installed, the sensor must physically be moved into
the duct and be installed after the water coil.
ETS = Temperature sensor in extract air. Used to de-activate the need
for cooling recovery, which is a part of the rotor guard function.
EHS = Temperature sensor in the exhaust air. Used together with ETS to
give notice of unforeseen rotor stop.
OH = Overheat sensor. Will dis-connect the heater at measured
temperature exceeding 55
o
C. Automatic reset at falling
temperature.
NB! If water coil is installed, the sensor must physically be moved to
the return water from the water coil.
Press (twice) for return to level 1 in the service menu ,
once = twice = up one level.
7.6 Analogue output (only when water heater is installed)
If valve motors need testing, it is possible to override the automatic
functions, and manually choose control voltage in the motor.
Turn to ”Analog output” . Confirm .
The following is displayed:
AO1 operate Heater. AO2 operate Cooling. When choosing Heater (AO1),
change ”Off” to ”Auto” or ”manual” ("manual" only for testing of valve
motor) . Confirm . Set max. control voltage (0-10V) for auto
(wanted control voltage for manual test) . Confirm and press
(3 times) to return to level 1 in the service menu,
, twice = up one level.
If cooling battery is chosen, press (twice) and adjust AO2 as
described for AO1 over.
7.7 Digital inputs
It is possible to read status for digital inputs.
Turn to ”Digital input”. Confirm .
The following is displayed:
DI1 = Fan configuration
DI2 = Fan configuration
DI3 = Fan configuration
DI4 = Disconnected heater battery
DI5 = Extended running (see also chapter.5-Extended/forced)
DI6 = Re-set filter time (see also chapter 3-Filter period)
DI7 = Home/leave
Water coil
Heater NO
Cooling NO
Functions
Water coil
→ Frost protection
Airflow
Frost protection
Alarm limit 7
Functions
Water coil
Frost protection
→ Airflow
Airflow
EF
SF
Nom 70 70
Max 107 (107)
Min 16 (16)
Functions
Frost protection
Airflow
→ Heater
Heater
Activate
YES
Analog input
1:SS 18,0 4:OT 18,0
2:ETS 21,3
3:EHS 11,2
Functions
Heater
Analog input
→ Analog output
Analog output
AO1
Off 0.0V
AO2
Off 0.0V
Functions
Analog input
Analog output
→ Digital input
Digital input
DI4 OFF/(or ON)
DI1 OFF/(or ON) DI5 OFF/(or ON)
DI2 OFF/(or ON) DI6 OFF/(or ON)
DI3 OFF/(or ON)) DI7 OFF/(or ON)
Functions
Airflow
Heater
→ Analog input