Tech Controllers EU-27i, Руководство пользователя

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EU-27i User's manual
6
• CH only
In this mode, only CH pump will work, HCW pump will not be activated.
• Simultaneous pumps
In this mode, both pumps will be active at the same time, each according to their own settings
activation.
• HCW priority
After selecting this mode, HCW pump will be activated first, and after reaching the preset temperature,
HCW pump will be deactivated then, CH circulation pump will be activated. Re-switching to HCW
pump will take place, when the reboiler temperature falls below the
preset value by HCW hysteresis
value.
• Lukewarm mode
After activating this function, CH pump is deactivated and HCW pump works according to the preset
activation parameters.
In the case of selecting the second pump as floor pump, the following operating modes will
appear:
• CH only
In this mode, only CH pump will work, floor pump will not be activated.
• Simultaneous pumps
In this mode, both pumps will be active at the same time, each according to their own settings
activation.
• Only floor
After activating this function, CH pump is deactivated and floor pump works according to the preset
activation parameters.
ATTENTION
In the event when there are two circulation pumps active, pump 2 (HCW or floor) is turned off, if their
temperatures become equal. Re-activation will take place when the CH circulation temperature is
greater by at least 2°C.
IV.d) CH pump (settings)
With this function, activation parameters of CH pump should be configured:
• CH pump temperature
This is a threshold activation temperature value, after reaching it, a pump starts working. The pump
will be deactivated when the CH temperature falls below the activation temperature by
CH hysteresis
value.
• CH hysteresis
CH pump will be deactivated after the decrease in circulation temperature below the activation
temperature by
CH hysteresis .
IV.e) HCW pump (settings)
This setting shall be active, after choosing HCW pump (MENU> pump type 2 ). Using this
function, activation parameters of HCW pump should be configured:
• HCW activation temperature
This is a threshold activation temperature value, after reaching it, a pump starts working. The pump
will be deactivated when HCW temperature falls below the activation temperature by
HCW hysteresis
or reaches the preset temperature.
• Preset HCW
It is a temperature value of a reboiler, after reaching it, HCW is turned off. The pump will be activated