SystemAir SAVE VSR 300, Установка и обслуживание

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6.7 Ext/Force run
It is possible to program extended time you want the unit to work under operation conditions other than
determined by the week schedule.
1. Go to the service menu by using the
SELECTION knob.
2. Enter the service level by typing the password,
default 1111. Use the SELECTION knob for each
digit and confirm with the CONFIRM button after
each set digit and choose "
NO
" for the system not
be locked.
Password
Password XXXX
Locked YES/NO
3. Go to:
Ext/Force Run
Service
Ext/Force Run
4. Set the time in minutes the unit is to run in
extended/forced running mode. Value range:
0–240 minutes.
Set the fan speed for this mode. Choose between
Low, Nom or High.
Default value: Nom.
Ext/Force Run
Minutes: 0
Fan speed: Nominal
6.8 Extra functions
The unit is equipped with a number of extra on/off functions which can be activated from external on/off
switches that can be connected to the digital inputs on the main print card (see wiring diagram).
The following possibilities are available:
• Digital inputs 1–3 : By connecting on/off switches to these inputs it’s possible to choose 3 individual
fan speed settings in the control panel depending on a temporary need for the building (for example
lowering the extract air fan speed when an open fire place is used). See chapter 8.5.
DI 3, is prepared and already connected internally for easy access on one gable end of the unit. See
chapter 5.6.
• Digital input 4 : Makes it possible to turn the electrical re-heater battery on or off.
Activated input means that the electrical re-heater is blocked.
• Digital input 5 : Activate the Extended/forced running function with a retractive switch. The function
overrides current fan speed settings and runs in forced mode according to the settings in
Service ->
Ext/Force run
. Choose between Low, Nom and High for this function.
The input is calculated based on the signals from an impulse-switch. If a standard switch is used, the
countdown of the set time starts when the switch is switched off.
• Digital input 7 : Home/leave, switching on this input decreases the set-point for supply air-temp with
10°C. This function is used when the building is uninhabited for a longer period. This function is
however not working if the unit has been configured to operate with a hot water heater.
It is recommended to connect either of DI1, DI2 or DI3 in parallel with DI7. If DI7 is activated, set the
fans speed to min. Fan speed settings are done when configuring DI1, DI2 or DI3.
See menu options in “Service menu Overview” (chapter 8.5).
7 Before starting the system
When the installation is finished, check that:
• The unit is installed in accordance with the instructions
SAVE VSR 300/500 Installation and Service
208115
24 Systemair AB