EIO
-55
7
External Sensor RI 2 Input
A remote NTC10k3 sensor can be connected to this input and can be configured for the following
(Underfloor/Outside Sensor )
functionality:-
•
DISABLED: RI2 is disabled.
•
MIN-MAX: RI2 is used for the underfloor minimum/maximum temperature limiting control.
•
OUTSIDE: RI2 is used to display (Outside) Temperature on the ACTION CIRCLE. It is possible
to change the text to indicate alternative measurement.
•
SYSTEM: RI2 is available over the communication network for system purposes.
Note:
If both RI1 and RI2 inputs are set to outside, the RI2 input takes the precedence
Outside Temperature Source
It is possible to configure the thermostat to show the outside temperature from the External Sensor
inputs RI1 or RI2. In networked systems it is also possible to send the outside temperature from the
network by configuring the
Outside Temp Source
parameter as
Network
.
DI1 Digital Volt-Free Input
The digital volt-free contact can be used to override the thermostat to ECO and OFF/FROST modes. The
configuration options are:
•
Close for ECO Mode
•
Open for ECO Mode
•
Close for OFF/FROST Mode
•
Open for OFF/FROST Mode
•
Heating/Cooling (Change-Over Configuration)
•
Alarm
•
Network
"Close For" Configuration - The digital volt-free contact can be linked to e.g. external timer to switch the
thermostat to ECO/OFF mode during the timed period.
"Open For" Configuration - The digital volt-free input can be used to activate ECO or OFF mode when
the contact opens. In this mode it can be connected to a window switch or door card switch.
Heating/Cooling Change-Over Configuration - The digital input can be used to override from heating to
cooling mode. The thermostat works in the heating mode when the contact is open, and in the cooling
mode when the contact is closed.
Alarm Configuration - when the contact closes the "DI Contact Alarm" alarm message is displayed on the
screen.
Network option is selected when the digital input is used for monitoring purposes only.
Humidity Measurement and Display (-RH option)
The models with RH option have a 2%rH accurate humidity sensor for room space humidity
measurement. The humidity reading is displayed inside the SMALL ACTION CIRCLE (display as default
enabled, option to disable through configuration pages) and available over the communication network.
Underfloor Heating/Cooling Control
When underfloor high/low limit sensor is fitted, the thermostat monitors the floor temperature.
If in HEATING CONTROL in COMFORT/ECO/BOOST modes:
•
The relay is switched OFF if the Max. Floor Temp Limit is exceeded
•
The relay switches back ON if the floor temp drops 1.8°F (Hysteresis) below the Max Temp Limit
•
The relay is switched ON if the Floor Temperature drops below the Min Floor Temp Limit. This override
is removed if the Floor Temperature exceeds 1.8°F the Min Floor Limit (Hysteresis)
This high limit is typically used to protect the floor surface. The minimum temperature limit is typically
used in bathrooms to provide minimum comfort level for bare feet and to dry up water.
If in COOLING CONTROL in COMFORT/ECO/BOOST modes:
•
The relay is switched OFF if the temperature drops below the Min. Floor Temp Limit
•
The relay switches ON with the temperature exceeds 1.8°F (hysteresis) above the Min Floor
Temp Limit
The low limit is typically used to prevent condensation.
The hysteresis is adjustable. To indicate the limit being active, the thermostat home screen shows a limit
icon next to setpoint.
Touchscreen Calibration
The touchscreen can be re-calibrated by pressing the screen on power-up. Calibrate the screen by
swiping to the all four edges of the screen and then press OK to accept the new settings.
Language Selection
ESRT55 user pages can be displayed in different languages by selecting the language from the
System Configuration pages.
Configuration Parameters
