Salda MCB - Fan Speed Dependence on External Contactor; Fireplace Function; Filter Protection; Filter Timer Settings

EN | 11MCB_miniMCB v2019.1
5.27. FAN SPEED DEPENDENCE ON EXTERNAL CONTACTOR
This function is designed to activate/deactivate the boost ventilation or preferred combination of fan speeds by means of an external contactor.
It is necessary to indicate a type of a signal to be sent to the input and what this function will control. Possible combinations of signal types and
functions:
› Not used;
› ON/OFF; selected fan speed combination is activated; the function is active until the contactor is on;
› Upon pressing a button the selected fan speed combination is activated; upon receipt of one impulse the function is activated, and after
second impulse – deactivated;
› ON/OFF. Boost ventilation function is controlled. It is active until the contactor is on. If this function is not shutdown, after expiry of time limit
a boost ventilation is terminated by force.
› Press a button. Boost ventilation function is controlled. After receipt of one impulse it is activated, and after second impulse – deactivated. If
this function is not terminated, after expiry of time limit a boost ventilation is terminated by force.
It is also indicated whether boost ventilation will be activated or a combination of fan speeds is preferred, i.e. it is possible to indicate individually
a preferred speed of the supply and exhausted air fans.
Function is set in the service environment section SERVICE › MAIN › FANS SPEED SWITCH.
5.27.1. FIREPLACE FUNCTION
The function of fan speed dependence on external contactor may help to light up the replace. The external contactor may be connected to its
door switch. It must be indicated that ON/OFF signal, the minimum exhausted air fan speed and the maximum supplied air fan speed is used. This
combination creates the pressure in premises, which improves the ue gas exhaust through a chimney and ame intensity. Upon opening the
replace door the function is activated and upon closing – deactivated.
Function is set in the service environment section SERVICE › MAIN › FANS SPEED SWITCH.
5.28. FILTER PROTECTION
5.28.1. FILTER TIMER SETTINGS
The lter timer limit is set in the service environment window SERVICE › MAIN › AIR FILTERS PROTECTIONS. The maximum setting is 1 year.
5.28.2. AIR FILTER PROTECTION BASED ON PRESSURE SWITCHES
Installed pressure switches can protect air lters against clogging. In the service environment window SERVICE › MAIN you can indicate their com-
binations:
› None;
› Supply air;
› Exhaust air;
› Supply and exhaust air.
When pressure switches are activated, the alarm is displayed.
5.29. FIRE PROTECTION FROM AN EXTERNAL CONTACTOR
Two re alarms – the main and the auxiliary – can be connected to this controller. According to default factory settings, the input of the master sig-
nal is normally closed (NC). Its conguration can be changed in the service environment in section SERVICE > DIGITAL INPUTS > EXTERNAL CONTROL
INPUTS. The response and the start time are indicated at the signal inputs, i.e. when the input will respond after opening voltage to the automation.
If the signal is interrupted, the protection is activated, a message is displayed and the system is operated in the specied mode. If both protections
are triggered, the function specied in the main input is performed. Protection is terminated upon canceling the warning. In the service environ-
ment section SERVICE › MAIN › FIRE PROTECTION a period of time when the system does not react and the mode of activated protection is indicated:
› Shut down the system;
› Run the supplied air fan at full speed and shut down the exhausted air fan;
› Run the exhausted air fan at full speed and shut down the supplied air fan;
› Run the supplied and exhausted air fan at full speed.
5.30. CO
2
REDUCTION FUNCTION
This function is designed to maintain a proper quality of room air. To activate it the exhaust air CO
2
sensor must be connected and properly cong-
ured in the service environment window SERVICE › SENSORS. When completed, the exhaust air CO
2
value is displayed in the section MONITORING.
In the service environment window SERVICE › MAIN › CO
2
REDUCTION FUNCTION you can switch on/o󰀨 the function, indicate preferred CO
2
level and
allowable limit; when it is exceeded (CO
2
set + allowable excess) CO
2
is reduced, information is displayed and air-ow is increased. When CO
2
reaches the set point, reduction is switched OFF.
CO
2
protection is inactive in the stand-by and building protection modes.
5.31. CHANGING PASSWORDS
In the service environment section SERVICE › MAIN › PASSWORD › PASSWORD CHANGING MODE › ON you can change login passwords. For this it is
necessary to activate the change and after entering a preferred password (4 digits), click a button SET. To review and change the parameters
without a password, just set 0.