Corrigo E Heating manual, revision G Chapter 5 Functional description 17
Chapter 5 Functional description
5.1 Heating systems
5.1.0 General
Corrigo E can be configured for 1 to 3 heating systems (radiator groups), HS1, HS2 and HS3.
5.1.1 Controllers
The heating system controllers are PI-controllers with settable P-band and I-time.
5.1.2 Control curves
The controllers have individual outdoor temperature / supply temperature control curves.
Each curve has 8 fix points. The default setting of the outdoor temperature values for the fix points
are -20, -15, -10, -5, ±0, +5, +10, +15. These can not be changed using the Corrigo front panel but
can be changed using E-tool. The corresponding supply temperature values are settable using the
front panel or E-tool.
5.1.3 Adaptation of curves
Room sensors can be used to correct the control curves. The average room temperature error over
24 hours is calculated. Values 1 hour before and 1 hour after a day/night or night/day change-over
are ignored. The curves are corrected once daily using the average room temperature error and a
settable correction factor. The correction will be a parallel displacement of the entire curve using the
following formula:
Displacement = (Room setpoint - Average temp)*Factor
5.1.4 Pump control
Each system can have single or double pumps. Double pumps are run one at a time with automatic,
weekly change over and automatic start of the backup pump on malfunction of the active pump.
Outdoor temperature dependent pump stop can be configured.
Pumps are exercised for 5 minutes at 3 pm daily.
5.1.5 Frost protection
If a controller is set to Off or Man(ual control) and the outdoor temperature is below a settable value
a minimum, settable supply temperature will be maintained and the pump will run.
5.1.6 Wind compensation
To compensate for wind chilling it is possible to connect a wind sensor and generate a setpoint
displacement according to a settable factor (°C per m/s).
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