The RDE100.. is used to control the room temperature in heating systems.
Typical applications:
For the control of the following pieces of equipment:
RDE100.. comprises of both 2-position and TPI temperature controls, which can be configured by parameter P78 (Control behavior). The 2-position control algorithm is to switch on and off the heating system within a switching differential according to the comparison between the setpoint setting and the measured room temperature.
TPI (Time Proportional Integral) control algorithm is to periodically switch on and off the heating system. The period time and pulse length of the control signal (PWM) are determined by the setpoint and the measured room temperature.
Floor heating limitation function (RDE100.1 only)
The factory setting for this function is Off (disabled) and must be set to “On” if floor heating is used. The external floor temperature sensor is connected to input X1 and acquires the floor temperature. If the floor temperature exceeds the parameterized temperature limit xx ºC (P14 = 1, P15 = 1, P16 = xx ºC), the heating valve is fully closed until the floor temperature returns to a level below the parameterized limit. A typical application is rooms (dry floor). If the application does not require floor heating temperature limitation but instead uses the external sensor as a source for both room temperature display and control, the parameters will have to be set as follows: P14 = 1, P15 = 0. A typical application is a bathroom (wet floor) where a constant floor temperature is required. It is not recommended to have only an internal built-in room sensor for the floor heating since there is a potential risk of overheating. Typical application: Maximum temperature limitation for under-floor heating systems
This function allows keycard application, please refer to the section “Operating notes, Economy mode”.
Can only be used when the circulating pump or valve is controlled! This function protects the pump or valve against seizing during longer off periods. Periodic 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 |
Optimum start control
The purpose of optimum start control is to reach a temperature level 0.25 K below the Comfort setpoint when occupancy according to the time program starts in Auto timer mode. For that purpose, the heating circuit must be switched on at an earlier point in time. The extent of forward shift depends primarily on the outside temperature. The maximum forward shift on time can be adjusted by parameter P89. A Forward shift on maximum “0” means the function is disabled.
Parameter | Range | Factory setting |
Forward shift on max (P89) | 0, 0.5,…24 h | 0 |
Optimum stop control switches off the heating circuit at the earliest possible point in time so that the room temperature will lay 0.5 K below the Comfort setpoint when the time switches changes from Comfort mode to Economy mode in Auto timer mode. The early shut down maximum time can be adjusted by parameter P90. Early shutdown maximum “0” means the function is disabled.
Parameter | Range | Factory setting |
Early shutdown max (P90) | 0, 0.5,….6 h | 0 |
The new control algorithm of the RDE100.. family offers a choice of control actions that can be configured via parameter P78. This means that optimum control can be selected for every type of application (factory setting “TPI slow”). 2-Position controller with 1 [K] switching hysteresis
TPI slow
TPI control behavior for slow heating systems that require longer minimum On times and limited numbers of switching cycles per hour.
Typical applications:
Minimum switching on / off time | > 4 minutes |
Average period time | Approximately 20 minutes |
TPI medium
TPI control behavior for general heating applications such as radiator systems,
thermal actuators, …
Minimum switching on / off time | > 1 minute |
Average period time | Approximately 20-25 minutes |
TPI fast
TPI control behavior for fast heating systems that tolerate a high number of switching cycles. Typical applications: electric heaters, gas boilers, fast thermal actuators
Minimum switching on / off time | > 1 minute |
Average period time | Approximately 10 minutes |
Do not use TPI fast for oil boilers or electro-mechanical actuators!
Type summary
Product No. | Stock No. | Features |
RDE100 | S55770-T278 | Mains-powered AC 230 V |
RDE100.1 | S55770-T279 | Battery-powered DC 3 V |
Ordering
Product No. | Stock No. | Description |
RDE100 | S55770-T278 | Room thermostat |
Valve actuators/external sensor must be ordered separately.
The documents can be downloaded from http://siemens.com/bt/download.
Description | Product No. | Mounting Instruction *) | |
Adapter plate (for China 86 conduit box, BS4662 UK conduit box) |
ARG70.5 |
A6V10563479 |
The documents can be downloaded from http://siemens.com/bt/download.
Mechanical design
The room thermostat consists 2 parts:
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
Wiring
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 CB1B1422, section “Do you want to enter
your own time switch?”
When holiday mode is activated, the symbol appears on the display. The set point (12 ºC) and the number of days a user is away can be readjusted by pressing the touch keys + and –. Changing the parameters by the following steps:
Parameter no. | Description | Setting range (default) |
P01 | Time format | 1 = 24:00 hours (default) 2 = 12:00 AM/PM |
P02 | Selection of °C or °F | 1 = °C (default) 2 = °F |
P03 | Standard temperature display | 1 = room temperature (default) 2 = setpoint |
P04 | Temperature sensor calibration | -3…3 °C Step 0.5 °C (-6…6 °F, step 1 °F) Default: 0 °C |
P06 | Comfort setpoint lock | 0 = OFF (default) 1 = ON à locked according to setting in permanent temperature setpoint |
P08 | Economy setpoint lock | 0 = OFF (default) 1 = ON à locked according to setting in permanent temperature setpoint |
P09 | Buzzer | 0 = OFF 1 = ON (default) |
P10 | Show frost protection icon | 0 = OFF (default) 1 = ON |
P11 | Time switch type for auto timer | 0 = Individual Days (default) 1 = All 7 days 2 = 5/2 days |
P12 | Periodic pump run | 0 = OFF (default) 1 = ON |
The thermostats are maintenance-free.
Disposal
The device is considered electrical and electronic equipment for disposal in terms of the applicable European Directive and may not be disposed of as domestic garbage.
WARNING | |
Risk of explosion due to fire or short-circuit, even if the batteries are empty Risk of injuries from by flying parts ● Do not allow the batteries to come into contact with water. ● Do not charge the batteries. ● Do not damage or destroy the batteries. ● Do not heat the batteries to more than 85 °C. |
WARNING | |
Electrolyte leakage Chemical burns ● Only grasp damaged batteries using suitable protective gloves. ● If electrolyte comes into contact with eyes, immediately rinse eyes with plenty of water. Consult a doctor. |
Observe the following
Warranty
The technical data given for these applications is valid only in conjunction with the Siemens actuators as detailed under «Equipment combinations», page 4. Use with third-party actuators invalidates any warranty offered by Siemens Building Technologies HVAC Products.
Technical data
RDE100 RDE100.1
Room thermostat with direct control of a gas-fired wall-hung boiler Room thermostat with direct control of a gas-fired floor-standing boiler
Room thermostat with direct control of a heating circuit pump (pre-control by manual mixing valve) Room thermostat with direct control of hydronic floor heating system
Remarks
Heating:
Because of the unavoidable self-heating effects of the electrical current, and loads of more than 3 Amperes connected to the unit can influence the control behavior and temperature accuracy in a negative way.
© Siemens Switzerland Ltd, 2013 – 2019
Technical specifications and availability are subject to change without notice. Issued by Siemens Switzerland Ltd. Building Technologies Division International Headquarters Theilerstrasse 1a CH-6300 Zug
Tel. +41 58 724 2424
www.siemens.com/buildingtechnologies Siemens
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SIEMENS RDE100 Programmable Room Thermostat Operating Instruction
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