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s
W
423
1
Room thermostat with Auto
Timer, independent DHW
for heating systems
• Room temperature control
• 2-position control with On/Off output for heating
• Comfort, Economy, Auto timer and Protection mode
• Independent On/Auto/Off control of DHW
• Auto time switch
• Adjustable commissioning and control parameters
• Battery-powered DC 3 V (2 x 1.5 V AAA)
RDE100.1
DH
Use
The RDE100.1DHW is used to control the room temperature in heating systems
with independent control of DHW.
Typical applications:
• Residential apartments
For the control of the following plant components and of DHW:
• Thermal valves or zone valves
• Gas or oil boilers
• Fans
• Pumps
CB1N1423en_01
2013-03-15
Building Technologies
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Functions
Temperature control
• Heat exchanger
• Continuous-flow water heater
• Small water heating systems
• Room temperature control via built-in sensor
• Selection of operating mode with operating mode touchkey
• Setting auto time switch (individual day, 7 day or 5-2 day)
• Display of current room temperature or setpoint in °C or °F
• Touchkey lock (manually)
• Setpoint lock
• Periodic pump run
• Reloading factory settings for commissioning and control parameters
• Independent DHW and its auto time switch (individual day, 7 day or 5-2 day)
The RDE100.1DHW acquires the room temperature with its built-in sensor and
maintains the setpoint by delivering control commands. The switching differential is
1 K.
Q14
ON
1422D01
T Room temperature
SD Switching differential
W Room temperature setpoint
Q14 Output signal for heating
OFF
W
T[°C]
Periodic pump run function
SD
Can only be used when circulating pump or valve is controlled!
This function protects the pump or valve against seizing during longer off periods.
Perodic pump run is activated for 3 minutes every 24 hours at 12:00.
Parameter Pump status
P12 = 0 (Default) Pump run off
P12 = 1 Pump run on
24 h
3 min.
on
off
1423Z04
12:00
12:00
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Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
Building Technologies 2013-03-15
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Type summary
Ordering
Equipment combinations
Product No. Stock No. Features
RDE100.1DHW
S55770-T280
Battery-powered DC 3 V
• When ordering, please indicate product No./stock No. and description
• Example:
Product No. Stock No. Description
RDE100.1DHW
S55770-T280
DHW room thermostat
• Valve actuators must be ordered separately
Mechanical design
Description Product No. Data Sheet
Electromotoric actuator
SFA21..
4863
Electrothermal actuator
(for radiator valves)
Electrothermal actuator
(for small valves 2.5 mm)
Damper actuator
STA23..
STP23..
GDB..
4884
4884
4634
Damper actuator
GSD..
4603
Damper actuator
GQD..
4604
Rotary damper actuator
GXD..
4622
The room thermostat consists of 2 parts:
• Plastic housing which accommodates the electronics, the operating elements
• Mounting plate with screw terminals
The housing engages in the mounting plate and is secured with a screw.
Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
Building Technologies 2013-03-15
and the room temperature sensor
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Page 4
Operation and settings
Display
1) Operating mode touchkey
2) Set
3) Ok
4) Touchkey for decreasing a value
5) Touchkey for increasing a value
6) DHW switch On/Auto/Off touchkey
202122234813
19
1
2
3
5
6
18
17
16
# Symbol
1
2
3
7
Description
Indicating that batteries need to be
replaced
Protection mode
(protection mode symbol can be enabled via parameter settings).
Auto timer mode
9 10 11 12 14
#Symbol
12
13
14
Description
View and set DHW auto time switch
DHW auto time switch activated
Morning: 12-hour format
Afternoon: 12-hour format
15
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Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
Building Technologies 2013-03-15
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4
F
View and set auto time switch
15
Confirmation
5
6
7
8
9
10
Comfort mode
Economy mode
Escape
Display of time
Permanent setpoint setting
Day and time setting
16
17
18
19
20
21
Room temperature in degrees Fahrenheit
Touchkey lock activated
Room temperature in degrees Celsius
C
Display of room temperature, setpoint,
etc.
Heating On
Weekday 1 = Monday 7 = Sunday
11
Holiday mode setting
22
23
Timer bar (Alternative use as DHW timer
bar)
Current room temperature
Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
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Page 6
Mounting and installation notes
Do not mount the thermostat in niches or bookshelves, not behind curtains, not
above or near heat sources, and not exposed to direct solar radiation. Mount about
1.5 m above the floor.
Mounting
• Mount the thermostat in a clean and dry location without direct air flow from a
heating/cooling equipment, and not exposed to drip or splash water
Wiring
See the Mounting Instructions M1429 enclosed with the thermostat.
Commissioning notes
Commissioning
Sensor calibration
Setpoint lock
Touchpad scanning
rate
• Ensure that wiring, fusing and earthing comply with local regulations
• Correctly size the cables to the thermostat and the valve actuators
• Use only valve actuators rated for AC 24…230 V
• The AC 230 V mains supply line must have an external fuse or circuit breaker
with a rated current of no more than 10 A
• Disconnect from power supply before removing the unit from its mounting plate
After power is applied, the thermostat carries out a reset during which all LCD
segments flash, indicating that the reset was made correctly. After the reset, the
thermostat is ready for commissioning by qualified HVAC personnel.
The control parameters of the thermostat can be set to ensure optimum performance of the entire system. Please refer to Operating Instructions CB1B1423, section "Do you want to change parameters?".
If the temperature on the display does not agree with the room temperature effectively measured, the temperature sensor can be recalibrated. For that purpose,
adjust parameter P04.
We recommend reviewing the setpoint lock (for public areas) in parameters P06
and P08 and changing them as needed.
Since the thermostat uses touch technology and to minimize battery power consumption, a parameter P21 (adjustable from 0.25 to 1.5 seconds) is implemented
for the user to adjust. This function is only valid for the battery-powered version
and the default value is 1 second.
This means that when, for a certain time, the user does not touch the touchpad, the
unit operates in power saving mode and the touchpad is running at a scanning rate
of 1 second.
(From the calculation – assuming 4 operations per day on the thermostat, the estimated 1-second scanning rate results in a battery life of 1 year. If the user increases the scanning rate, the batteries’ life is extended.)
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Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
Building Technologies 2013-03-15
Page 7
g
e of batteries
Chan
Operating notes
If the battery symbol appears, the batteries are almost exhausted and should
be replaced. Use alkaline batteries type AAA.
The RDE100.1DHW provides Comfort, Economy, Auto timer and Protection mode.
The difference between Comfort and Economy mode is only the room temperature
setpoint. The changeover between Comfort, Economy and Protection mode is
made either automatically by the auto time switch or by pressing touchkey mode.
Comfort mode
Economy mode
Protection mode
Holiday mode
Time switch
DHW
and DHW auto
timer function
AUTO
When Comfort mode is activated, symbol
(20 ºC) can be readjusted by pressing touchkeys +
appears on the display. The setpoint
and –.
When Economy mode is activated, symbol
can be readjusted by pressing touchkeys + and –.
(16 ºC)
appears on the display. The setpoint
If the temperature falls below 5 ºC, the unit automatically activates the heating output. The symbol
appears only, if the icon is enabled via parameter settings.
When holiday mode is activated, symbol
appears on the display. The setpoint
(12 ºC) and the number of days a user is away can be readjusted by pressing
touchkeys + and –.
When Auto timer mode is enabled, the changeover between the operating modes
(Comfort and Economy mode) will take place automatically. There are three options for time switch setting: individual day, 7 day or 5-2 day. You can select Comfort or Economy mode in every 15 minutes interval of the day. The 0:00 to 24:00
hour time bar will allow you to set the mode throughout the selected day(s).
Factory default for 7-day Time switch
Default
value
Day/s Comfort mode Economy mode
Mo (1) – Fr (5) 6:00 – 8:00 hr
17:00 – 22:00 hr
22:00 – 6:00 hr
8:00 – 17:00 hr
Sa (6) – Su (7) 7:00 – 22:00 hr 22:00 – 7:00 hr
Please refer to Operating Instructions CB1B1423, section "Do you want to enter
your own Time switch?".
Press
the auto status, this
to switch on DHW heating. Press this touchkey again, DHW will be in
symbol will be shown. Press this touchkey one more
AUTO
time, DHW heating will be switched off and no symbol will be shown.
Please refer to Operating Instructions CB1B1423, section "Do you want to activate
DHW control?".
During auto status, the DHW will switch according to the DHW time switch set.
DHW can be selected on or off in every 15 minutes interval of the day. The 0:00 to
24:00 hour time bar will allow you to set DHW on or off throughout the selected
day(s).
Factory default for 7-day Time switch for DHW
Default
value
Day/s DHW control ON DHW control OFF
Mo (1) – Fr (5) 6:00 – 8:00 hr
17:00 – 22:00 hr
22:00 – 6:00 hr
8:00 – 17:00 hr
Sa (6) – Su (7) 7:00 – 22:00 hr 22:00 – 7:00 hr
Please refer to Operating Instructions CB1B1423, section "Do you want to enter
your own Time switch for DHW control?".
Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
Building Technologies 2013-03-15
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Page 8
Maintenance notes
Disposal
Technical data
The thermostats are maintenance-free.
In terms of disposal, the room thermostats are classified as electronic scrap conforming to the European Directive 2011/65/EU (WEEE) and must not be disposed
of as unsorted domestic waste. The relevant national legal regulations must be
complied with and the units must be disposed of via the appropriate channels.
Local and currently valid legislation must be observed.
Power supply
Control inputs
Control outputs
Function data
Environmental
conditions
Operating voltage
• RDE100.1DHW
DC 3 V (2 x 1.5 V alkaline batteries AAA)
For battery life (RDE100.1DHW), see below (alkaline batteries type AAA).
Battery life calculation is based on the touchpad scanning rate during idle time
(assuming a user presses 4 touchkeys per day):
Scanning rate 0.25 s
Scanning rate 0.50 s
Scanning rate 1.00 s
Scanning rate 1.50 s
Control input Q11-Nx (Com)
Control input Q21-Nx (Com)
Heating valve or wall-hung boiler
Control output Q12-Nx (NC contact)
Control output Q14-Nx (NO contact)
DHW heating equipment
Control output Q22-Nx (NC contact)
Control output Q24-Nx (NO contact)
Switching differential SD
Comfort mode
Economy mode
Holiday mode
Built-in room temperature sensor
Setpoint setting range
Accuracy at 25 °C
Temperature calibration range
Resolution of settings and displays
Setpoints
Temperature value displays
Operation
Climatic conditions
Temperature
Humidity
193 days battery life
273 days battery life
345 days battery life
378 days battery life
(AC 24...230 V) max. 5(2) A min. 8 mA
(AC 24...230 V) max. 5(2) A min. 8 mA
(AC 24…230 V) max. 5(2) A min. 8 mA
(AC 24...230 V) max. 5(2) A min. 8 mA
(AC 24…230 V) max. 5(2) A min. 8 mA
(AC 24...230 V) max. 5(2) A min. 8 mA
1 K
20 °C (5...35 °C)
16 °C (5...35 °C)
12 °C (5...35 °C) (Standalone)
5…35 °C (Comfort/Economy mode)
< ±0.5 K
±3.0 K
0.5 °C
0.5 °C
As per IEC 60721-3-3
Class 3K5
0…50 °C
<95% r.h.
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Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
Building Technologies 2013-03-15
Page 9
Norms and standards
Transport
Climatic conditions
Temperature
Humidity
Mechanical conditions
Storage
Climatic conditions
Temperature
Humidity
conformity to
EMC directive
Low voltage directive
As per IEC 60721-3-2
Class 2K3
-25…60 °C
<95% r.h.
Class 2M2
As per IEC 60721-3-1
Class 1K3
-25…60 °C
<95% r.h.
2004/108/EC
2006/95/ EC
General
Connection diagrams
C-Tick conformity to
EMC emission standard
AS/NSZ 4251.1:1999
RoHS (Restriction of
Hazardous Substances)
Product standards
Automatic electrical controls for
household and similar use
2011/65/EU
General requirements EN 60730-1
Particular requirements for temperature
sensing controls EN 60730-2-9
Electromagnetic compatibility
Emissions
Immunity
EN 61000-6-3
EN 61000-6-2
Safety class II as per EN 60730-1, EN 60730-2-9
Pollution class II as per EN 60730
Degree of protection of housing IP30 as per EN 60529
Connection terminals for Solid wires or prepared stranded wires
2 x 1.5 mm
2
or 1 x 2.5 mm2 (min. 0.5 mm2)
Weight 0.167 kg
Color of housing front RAL9003
Legend
Lx Live, AC 24...230 V
Nx Neutral conductor, AC 24...230 V
Y1 Heating valve or wall-hung boiler
Y2 DHW heating equipment
Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
Building Technologies 2013-03-15
Lx
1423A01
Q11
3V
Q12
Nx
Q14 Q22
Y1
5(2) A
max
Q21
Y2
Q24
5(2) A
max
RDE100.1DHW
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Page 10
Appication examples
142
S
1
1423S02
2
T
T
F1
T
F2
N1
DHW
Y2
M1
Room thermostat with direct control of
a gas-fired wall-hung boiler and independent control of DHW
DHW
Y1
T
N1
M1
DHW
F1F2
T T
Y2
0
3
T
N1
M1
Room thermostat with direct control of a
gas-fired floor-standing boiler and independent control of DHW
Legend
3S03
14
F1
F2
M1
N1
Y1
Y2
DHW
Thermal reset limit thermostat
Safety limit thermostat
Circulating pump
RDE100.1DHW room thermostat
Mixing 3-port valve with manual adjustment
Magnetic valve
DHW heating equipment
Room thermostat with direct control of
a heating circuit pump (precontrol by
manual mixing valve) and independent
control of DHW
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Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
Building Technologies 2013-03-15
Page 11
Dimensions
1
2
All dimensions in mm
Remarks
85
7
21.5
0.5
Ø80
Ø60
83.5
4.1
7.1
1423M01
Heating:
Because of the unavoidable self heating effects of the electrical current, any loads
of more than 3 Amperes connected to the unit can influence the control behavior
and temperature accuracy in a negative way.
© 2013 Siemens Switzerland Ltd Subject to change
Siemens RDE100.1DHW Room thermostat with Auto Timer, independent DHW CB1N1423en_01
Building Technologies 2013-03-15
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