TAC 2112, Manual Functional Description
7:8 (22), 0-004-7459-3 (GB) 1999-08-01, TAC AB
Criteria for automatic curve adjustment
The following criteria must be met for the automatic curve adjustment
to work:
•
A reference sensor is installed.
•
Automatic curve adjustment is on (P 27).
•
The controller is working under timed operation.
•
Daytime operation is on.
•
The pump is working, i.e. there is a heating requirement.
•
The return temperature limitation is not active.
Parameters
P No. Parameter Min. Max. Step Default Comments
P 27 Automatic curve adjustment 0 (off) 1 (on) 1 1 (on) With reference sensor only
P 28 I time for curve adj. controller 1 min. 720 min. 1 min. 180 min. With reference sensor only
P 29 Max curve adjustment 0 °C 40 °C 1 °C 5 °C With reference sensor only
7.3.5 Supply controller
Controller
The supply temperature is controlled by a PI controller (proportional
and integrating controller) of the “increase/decrease” type. The
setpoint for this controller is calculated on the basis of the following
parameters:
•
Operating mode
•
The reset curve for outdoor temperature compensation
•
Room temperature effect, if a reference sensor is fitted
•
Parallel shifting of the reset curve, if no reference sensor is fitted
•
Return temperature limitation
•
Remote setpoint control, SPC adjustment
•
Pump control
•
Night setback
•
Supplement during morning boost
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