Heater - Regin OPTIGO ARDO Manual

3.3.1

Heater

Heater types
Water heating
Control
If a sequence is configured as water heating, it's possible to select if the sequence should be controlled with
freeze protection. The sequence is controlled by the corresponding sequence analog output.
Table 3-4 Settings and configuration for water heater
Feature
Freeze protection temperature
Analog output
Freeze protection
The heater return water temperature is measured using the analog input Freeze protection temperature. Low
temperatures will generate an internal, proportional signal that is used to force the heating valve open,
thereby preventing freeze-up of the heater.
The internal signal will begin to rise as the frost protection temperature falls below the Alarm limitation
running mode + P-band running mode in order to reach 100 % output when the signal has fallen to Alarm level.
When the internal signal reaches 100 %, the unit is shut down, the heating output is set to completely open
mode and an alarm is activated. .
N N o o t t e e ! ! The unit is restarted when the alarm has been acknowledged and the temperature for the frost
protection sensor has risen above Alarm limitation running mode + P-band running mode.
Optigo Ardo manual, Rev. A
Menu path in display
Configuration►Inputs/Output-
s►Analog inputs►
Freeze protection temperature
Configuration►Inputs/Output-
s►Analog outputs►
Heater
Information for the specialist
Variable
✓ Sensor type
✓ Filter factor
✓ Compensation
✓ Actual value
Range output:
✓ 0...10 V
✓ 2...10 V
✓ 10...2 V
✓ 10...0 V
Note
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