Seltron Regulus RCD2 Manual

www.regulus.eu
RCD2
RCD2
EN
Installation and Maintenance Manual
RCD2 ROOM UNIT
for AHC 40 actuator with weather compensation controller

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CONTENTS
1. Introduction ......................................................................................................... 3
2. Basic Features ................................................................................................... 3
3. Technical Data .................................................................................................... 3
4. Description, Control ............................................................................................ 4
5. Location Selection .............................................................................................. 7
6. Dimensions ......................................................................................................... 7
7. Connection to AHC 40 actuator .......................................................................... 8
8. Error Messages, Default Settings ....................................................................... 9
9. IMPORTANT INFORMATION ON DISPOSAL IN COMPLIANCE WITH
THE EUROPEAN DIRECTIVE 2002/96/ES ....................................................... 11

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1. Introduction
The RCD2 room unit allows easy and comfortable operation of a heating system. For clear
data display it is equipped with a large LCD display with automatic backlighting adjusting
to the room lighting. In addition to room temperature, it also measures relative humidity and
air pressure. It then displays a weather forecast based on the measured air pressure. It is
designed to be mounted on a wall.
2. Basic Features
• Display of current and desired temperature.
• Display of temperatures measured by the controller.
• Relative humidity display.
• Display of error messages and excessive temperature warnings.
• Display of air pressure and weather forecast.
• Additional operating modes ECO, PARTY and HOLIDAY.
• Weekly timer.
3. Technical Data
Power supply From the connected controller (conductor
cross section 0.25 to 0.5 mm2)
Consumption Max. 0.02 W
Clock power supply CR2032 battery
IP rating IP 20
El. protection class III
Ambient temperature 0 to 40 °C
Storage temperature -20 to 65 °C
Weight 140 g

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4. Description, Control
1. LCD display
2. Increase of value / move to the next value
Pressing for 10 s unlocks or locks the setting - see parameter S1.9.
3. Browsing the measured values
Press for 2 seconds to change the parameters listed in the table at the end of the
manual.
4. Ambient light sensor
5. Switching heating mode on/off
 Pressingfor2sturnstheheatingo󰀨oron.
Pressing for 20 s switches between heating and cooling.
6. Decrease of value / step back
Pressing for 10 s unlocks or locks the keypad - see parameter S1.10.
7. Switching PARTY mode On/Off
Temporarily increased temperature until the set time.
 Whenthebuttonisheldfor10s,thereplacefunctionisactivatedandtheroom
temperature is ignored for the time set in parameter S1.13.
8. Switching ECO mode On/Off
Temporarily reduced temperature until the set time.
When the button is held down for 20 s, the device switches to holiday mode.
9. Activation of one-time hot water heating and Switching On/Off hot
water mode.
Setting the desired day and night temperature and hot water temperature is only possible in
heating mode, if the PAIRS, ECO or HOLIDAY modes are not active.

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Meaning of the symbols on the display
Warning
If an error occurs in the heating controller, the room unit will beep twice and the
symbolwillash.Whentheerrorstops,thesymbolremainslituntiltheerroris
read in the error list.
Activation of the safety function of the heating controller.
Theroomunitbeepsoncelongandthesymbolstartsashing.Whentheerror
stops, the symbol lights up until the error is read in the error list.
Low temperature in the thermal store.
Theroomunitbeepstwicebrieyandthesymbolstartsashing.Whentheerror
stops, the symbol lights up until the error is read in the error list.
Low temperature in the boiler.
Theroomunitbeepstwicebrieyandthesymbolstartsashing.Ifthetempe-
raturedropsbelowtheminimumtemperature,theunitbeeps3timesbrieyand
the symbol lights up.
Warning of low pellet supply.
Theroomunitbeeps3timesbrieyandthesymbolstartsashing.
Keyboard lock.
The alarm sound is repeated at 20:00 if alarms or warnings are still present. (See settings
P1.8 and P1.9.)

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Heating mode.
Cooling mode.
Heating to day temperature.
Heating to night temperature.
Cooling to day temperature.
Cooling to night temperature.
Automaticheatingswitch-o󰀨-summermode.
PARTY function is active.
ECO function is active.
HOLIDAY function is active.
Hot water heating.
DHW heating permanently on.
One-time DHW heating.
Active protection against Legionella.
Heatingcircuitswitchedo󰀨.(Frostprotectioncanbeactivated.)
Manual boiler shutdown.

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5. Location Selection
Place the room unit (using the screws provided) on a wall in the reference room to a height of
about150cm.Avoidinstallinginareaswherethesensedtemperatureisundesirablya󰀨ected
asindicatedintheg.:
6. Dimensions

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7. Connection to AHC 40 actuator
To connect the RCD2 room unit
to the AHC 40 actuator, a two-
-core cable with a white and
red wire is used.
The cable has a connector at
one end for connection to the
COM port of the adapter that
is also included in the actuator
package.
White
wire
Red
wire
Connect the white and red wires to the
COM and GND terminals of the RCD2
room unit from the rear of the unit.
When the power to the valve is turned on, the display of a pro-
perly wired room unit will show „conn“.

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8. Error Messages, Default Settings
Error Description
Er1 Room sensor error
Er2 Auxiliary sensor error
Er3 External sensor error
Er4 DHW sensor error
conn Err Connection error
Press and hold the „i“ button for 40 seconds to return to the default values. (The default va-
lues are marked in bold in the table.) Press the „i“ button for 2 seconds to enter the parameter
editing menu. Use the „+“ and „-“buttonstomakeadjustmentsandconrmwiththe„i“button.
Parameter Description Range
P1.1 Temperature rounding 0 – 0,1°C
1 – 0,2°C
2 – 0,5°C
3 – 1,0°C
P1.2 Automatic return to home screen
time
3 – 180 s (15)
P1.3 Timetoswitcho󰀨displaybacklight 10 – 180 s (30)
P1.4 Display backlight operating mode 0 – 3 (2)
P1.5 Minimum display backlight 0 – 100 % (5)
P1.6 Maximum display backlight 0 – 100 % (80)
P1.7 Display contrast 1 - 8 (6)
P1.8 Sound signals 0 – none
1 – keys
2 – keys and warnings
3 – keys, warnings and alerts
P1.9 Warnings 0 – none
1 – warnings
2 – warnings and alerts
P1.10 Basic display 1 – room temperature
2 – outdoor temperature
3 – DHW temperature
4 – humidity
5 – air pressure
6 – auxiliary sensor
7 – air quality
11 to 22 - temperature sensors

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Parameter Description Range
P1.11 Therstvalueintheinformation
line
0 – no display
1 – room temperature
2 – outdoor temperature
3 – DHW temperature
4 – humidity
5 – air pressure
6 – auxiliary sensor
7 – air quality
11 to 22 - temperature sensors
P1.12 The second one Identical to parameter P1.11 (3)
P1.13 The third one Identical to parameter P1.11 (4)
P1.14 The fourth one Identical to parameter P1.11 (5)
P1.15 Thefthone Identical to parameter P1.11 (0)
P1.16 The sixth one Identical to parameter P1.11 (0)
P1.17 The seventh one Identical to parameter P1.11 (0)
P1.18 Number of information items on
the home screen
1 – 9 (1)
P2.1 Unit address 0 – automatic
1 – 1
2 – 2
S1.2 Room temperature 0 – none
1 – built-in sensor
2 – auxiliary sensor (AUX)
3 – built-in and auxiliary sensor
S1.3 Calibration of the built-in
temperature sensor
-5.0 to 5.0 °C (0,0)
S1.4 Calibration of the auxiliary
temperature sensor
-5.0 to 5.0 °C (0,0)
S1.5 Humidity sensor calibration -10,0 to 10,0 °C (0,0)
S1.6 Air pressure sensor calibration -100 to 100 mbar (0,0)
S1.7 Air quality sensor calibration -1000 to 1000 (0,0)
S1.8 Light sensor calibration 0.5 – 2 (1)
S1.9 Parameter group setting lock 0 – no lock
1 – S1
2 – P1, P2 a S1
S1.10 Keyboard lock 0 – no lock
1 – mode
2 – mode and functions
S1.11 Minimum adjustable room
temperature
4 – 40 °C (6)
S1.12 Maximum adjustable room
temperature
4 – 40°C (30)
S1.13 Room temperature ignoring time
(Fireplace function)
1 – 12 h (5)
S1.14 Altitude
(for more accurate weather fore-
cast)
0 – 1999 m (300)

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9. IMPORTANT INFORMATION ON DISPOSAL IN COMPLIANCE
WITH THE EUROPEAN DIRECTIVE 2002/96/ES
Do not dispose of this product as unsorted municipal waste. Please
dispose of this product by returning it to the point of sale or to your local
municipal collection point for recycling.
Respecting these rules will help to preserve, protect and improve the qu-
ality of the environment, protect human health and utilize natural resour-
ces prudently and rationally.
The crossed out wheeled bin with marking bar, printed ether in the Ma-
nualorontheproductitself,identiesthattheproductmustbedisposed
of at a recycling collection site. WEEE registration number:
02771/07-ECZ

©2022 We reserve the right to errors, changes and improvements without prior notice.
REGULUS spol. s r.o.
E-mail: [email protected]
Web: www.regulus.eu
v1.0-08/2022