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User’s Manual
19
Tbwtr setpoint
- setting for the desired temperature of the
backwater from the heater. If unit stopped, regulator keeps
exactly the setpoint. If unit running, Tbwtr setpoint is considered
as lower limit of backwater temperature. If the Tbwtr drops, the
regulator forces the valve to open regardless to the main control
loop for heating.
▪
Low limit: 20°C
▪
High limit: 70°C
▪
Default: 50°C
Note!
The room could be overheated by backwater control
feature. Tbwtr control has got higher priority than the main
temperature control loop.
Note
! The backwater control feature is blocked if the outside
temperature is higher than Pump work temp.
▪
Kp Tbwtr - gain for the regulator
▪
Ti Tbwtr - integral factor for the regulator
▪
Default: Kp=1 / Ti=60s
SETTINGS
PREHEATER
Temp. setting
- setpoint for initial heater.
Note!
Preheating regulator compares the setpoint with the B3
sensor readout. Regulation goal is to keep the B3 temperature
equal to the setpoint.
Note!
Observe the application diagrams for proper placement of
the sensors.
▪
Low limit: -24°C
▪
High limit: 0°C
▪
Default: -9°C
▪
Kp - gain for the regulator
▪
Ti - integral factor for the regulator
▪
Default: Kp=1 / Ti=60s
Min. valve open
– lower limit for the valve position. In working
unit, the valve control signal will be at least at that level
▪
Low limit: 0%
▪
High limit: 100%
▪
Default: 20%
Pump protection / Set protection
– setting to enable/disable
the protection against sticky sealing issue. The sticky sealing
could happen in case of long term inactivity of the pump, when
contaminations and deposits from the water could damage the
mechanical sealing
▪
Not active
▪
Active (default setting)
PREHEATER
Temp.setting
-9°C
Kp
1.0
Ti
60s
Min. valve open
20%
PUMP PROTECT.
Set protection
Active
Stoppage period
7d
Run time
30s
