Tech Controllers ST-979, Руководство пользователя

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TECH
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 Grate - operation mode
When this function is selected, the grate is active during CH boiler operation. The user defines the
frequency of grate activation (Pause time parameter) and its duration (Operation time parameter).
During grate operation the fan speed should be higher - use Increase fan revolutions parameter
to set the value. Return to normal speed should take place some time after deactivation of the
grate - Fan delay parameter.
 Grate - damping
When this function is selected, the grate is always activated after the damping procedure. It will
operate according to Opening time parameter. The user defines the fan speed during grate
operation after damping.
VI.e) Cleaning
The user may activate cleaning of the CH boiler exchanger. For this function to operate properly,
it is necessary to set the following parameters:
 Number of repetitions
This parameter defines how many times the cleaning procedure will be repeated every time the
function is activated.
 Operation schedule
This parameter is used to define days and time of cleaning procedure activation.
 Manual mode
This function enables the user to check if the cleaning device works properly by activating it for a
specified period of time.
VI.f) Ash remover
Ash removing procedure is activated once ON option is selected. The user defines the frequency
of ash removing procedure (Pause time parameter) and its duration time (Operation time
parameter).
VI.a) Cascade
Parameters in this submenu are used to configure cascade CH boiler systems.
NOTE
Before start-up or editing any parameters, all CH boilers must be connected to ST-
503 module using RS cable.
Select ON in order to activate cascade control.
NOTE
It must be done separately in all CH boiler controllers constituting the cascade.
Next, select the number of CH boilers in cascade - the maximum number is 4.
NOTE
The number of CH boilers also specifies the number of panels which may be used
to introduce changes in the cascade parameters. By default the number
of CH boilers is 1. Therefore, it must be must be edited in the panel of the CH boiler
which is connected to socket no 1.
From now on all changes introduced in the cascade settings are automatically updated in all the
remaining controllers. It also applies to the pre-set temperature of the CH boiler - if the value is
changed in any of the CH boilers, the pre-set temperature of all the remaining CH boilers is
changed likewise.