Siemens RLE132 User manual

CE1N3334en
2015
-03-06
Buil
ding Technologies
HVAC Products
3334
Synco™ 100
Immersion Temperature
Controller
RLE132
with 3
-position output
Immersion temperature controller for basic heating plants. Compact design with
3-position control. Used as a controller, minimum or maximum limiter.
Use
Plant types:
•Heating zones in heating plants
•Heating section of ventilation or air conditioning plants
•Flow temperature in heating plants
•DHW temperature
•Heat exchanger control
•Calorifier control
Building types:
•Residential buildings of all types
•Non-residential buildings of all types
Used as a limiter:
•Heating plants controlled by a heating controller with 3-position control, e.g. RVL4…,
RVP3…, RVP2…
Devices that can be controlled:
•Actuators with 3-position control

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Functions
•Control of the water temperature through 3-position control of a seat or slipper valve
•Minimum or maximum limitation of the flow or return temperature, or minimum
limitation of the boiler return temperature
•Outside temperature compensation
•Remote setpoint adjustment
•Setpoint changeover via external contact, can be selected to provide temperature
setback or legionella function
•Frost protection
•Load-dependent switching contact (e.g. for pump release)
•Test mode as a commissioning aid
Ordering
When ordering, please give type reference RLE132.
Equipment combinations
Actuators must meet the following specification:
•3-position control
•Control contacts suited for AC 24…230 V, 2 A
•Running times:
−≥30 s (30 s or 35 s)
−≥120 s (120 s, 125 s, 135 s, 150 s or 160 s)
For auxiliary functions, the following products can be used:
Type of unit
Type ref.
Data Sheet
Outside sensor (for outside temperature compensation)
QAC22
N1811
Remote setpoint adjuster
BSG21.1
N1991
Scale 0…130 °C for remote setpoint adjuster
BSG-Z
N1991
As a limiter, the RLE132 can be used in connection with the following types of heating
controllers:
Type reference
Data Sheet
RVL470
N2522
RVL471
N2524
RVL472
N2526
RVP201, RVP211
N2464
RVP300
N2474
RVP310
N2475
RVP320
N2476
RVP330
N2477
RVP331
N2478
Technical design
When the water temperature deviates from the setpoint, the controller adjusts the
actuating device until the setpoint is reached again. The neutral zone is ±2 K. The
controller calculates and stores the running time of the connected actuator. Fully open
(100 %) corresponds to a heat demand of 100 % (also refer to section “Switching
contact”).
The controller provides 2 modes of operation (for details refer to section “Operating
modes“):
•Control with ECO
Main functions
Other functions
Mode of operation
as a controller

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•Control with boost
The following settings are required:
•Setpoint
•Control mode: A choice of 4 PI modes are available to suit the type of controlled
system (refer to chapter “Mechanical design”)
•P-band
The control signals of the heating zone controller (RVL4…, RVP3…, RVP2…) are
passed to the RLE132 which acts as a limiter.
1. If the temperature (e.g. the boiler return temperature) falls to a level 4 K above the
minimum limit value, the RLE132 interrupts the OPEN signals of the heating zone
controller. At the same time, it delivers CLOSE commands in the form of pulses to
the mixing valve’s actuator until the temperature rises again.
2. If the temperature falls to the minimum limit value, the RLE132 delivers a constant
CLOSE command to the mixing valve’s actuator until the temperature rises again.
3. If the temperature rises, the RLE132 releases the positioning commands of the
heating zone controller.
1. If the temperature (e.g. the flow temperature) rises to a level 4 K below the
maximum limit value, the RLE132 interrupts the OPEN signals of the heating zone
controller. At the same time, it delivers CLOSE commands to the mixing valve’s
actuator in the form of pulses until the temperature falls again.
2. If the temperature reaches the maximum limit value, the RLE132 delivers a
constant CLOSE command to the mixing valve’s actuator until the temperature falls
again.
3. If the temperature falls, the RLE132 releases the positioning commands of the
heating zone controller.
When using an outside sensor, the RLE132 provides outside temperature
compensation. If the outside temperature falls from +15 to –5 °C, the setpoint will be
continuously raised by 0 K to 26 K. Below an outside temperature of –5 °C, the
temperature increase will be kept constant.
T
AOutside temperature
w
Current setpoint
wNNominal setpoint
Where the controller is mounted in an inaccessible location, a remote setpoint adjuster
BSG21.1 can be connected to the RLE132 (terminals R1–M), thus enabling the
setpoint to be adjusted from a remote location. In this case, the controller’s setpoint
setting slider must be set to EXT.
In operating mode Control with ECO, the nominal setpoint is reduced by closing an
external potential-free contact across terminals D1–M.
This ensures energy savings, e.g. through night setback of space heating controlled by
a time switch.
In operating mode Control with boost, the nominal setpoint is raised by closing an
external potential-free contact across terminals D1–M.
Mode of operation
as a limiter
Minimum limitation
Maximum limitation
Outside
temperature
compensation
Remote adjustment
of setpoint
Operating modes
Control with
ECO
(setpoint decrease)
Control with boost
(setpoint increase)

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This makes possible legionella protection in DHW heating systems. With the help of a
7-day time switch, the DHW is periodically heated up to the required temperature.
A slider is provided to set the temperature by which the nominal setpoint shall be
lowered (ECO) or raised (boost). The setting cannot be accessed by the user.
The switching output (terminals Q13–Q14) enables a plant element to be switched
depending on demand, or a limitation alarm to be generated. The mode of operation
depends on the operating mode selected on the RLE132:
•When used as a controller:
The switching contact makes when there is a heat demand of 5 %. The contact
breaks, when there is no demand (0 %) for a period of 12 minutes.
•When used as a limiter:
The contact makes when the limitation value is reached, and breaks when normal
operation is resumed.
In test mode, the control is switched off. The setpoint setting knob acts as a positioning unit:
•If a setting >104 °C is used, the actuating device will open (OPEN command on Y1)
•If a setting <26 °C is used, the actuating device will close (CLOSE command on Y2)
The test mode is indicated by an LED.
Mechanical design
The controller is designed for mounting into piping. It consists of a housing and cover
and an immersion rod. The rod contains the sensing element (LG-Ni 1000).
The housing is made of plastic and accommodates the controller electronics and all
operating elements, which are accessible only after removing the cover. The front
carries the setpoint setting slider and an LED for indicating operation:
•LED lit: normal operation
•LED flashes: test mode
1
2
3
4
LED
Block of DIP
-switches
Setting slider for the setpoint i
n
crease or
decrease
Setting potentiometer for the P-band
All functions are selected via the DIP switch block which comprises 6 switches:
Function
1
2
3
4
5
6
Action
Operating
Heating with boost; setpoint increase
Maximum limitation
Minimum limitation
Heating with ECO; setpoint decrease
Integral action time
VERY SLOW, TN= 300 s
SLOW, TN= 180 s
FAST, TN= 60 s
MEDIUM, TN= 120 s
Test mode
Test mode
Normal operation
Running time of
actuator
>30 s
>120 s
Setting
Switching contact
Test mode

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For mounting, a protection pocket is provided; the controller is inserted and snaps on.
Engineering notes
The controller is supplied complete with Mounting and Installation Instructions.
Mounting notes
Ensure that the local safety regulations are complied with.
Suitable mounting locations are the following, depending on the application:
•Flow temperature control:
−In the heating flow; immediately after the pump if the pump is mounted in the flow
−In the heating flow; approximately 1.5 to 2 m after the mixing point if the pump is
mounted in the return
•Minimum limitation of the boiler return temperature and maximum limitation of the
flow temperature:
1.5 to 2 m after the mixing point
•DHW temperature control:
1.5 to 2 m after the mixing point
•Heat exchanger control:
As close as possible to the heat exchanger while observing the maximum
permissible ambient temperature
To mount the protection pocket, a threaded sleeve must be fitted into the pipe. The
immersion rod should face the direction of flow. The maximum permissible ambient
temperature must be observed.
Warning!
No internal line protection for supply lines to external consumers.
Risk of fire and injury due to short-circuits!
•Adapt the line diameters as per local regulations to the rated value of the installed
overcurrent protection device.
•The AC 230 V mains supply line must have an external circuit breaker with a rated
current of no more than 10 A.
Commissioning notes
To check the control wiring, the controller can be switched into test mode so that the
response of the actuating device can be checked.
In case of instability of the control loop, the P-band is to be increased, and/or the
integral action time selection. If the response of the system is too slow, these values
are to be reduced.
Disposal
The devices are considered electronics devices for disposal in terms of European
Directive 2012/19/EU and may not be disposed of as domestic waste.
•Dispose of the device via the channels provided for this purpose.
•Comply with all local and currently applicable laws and regulations.

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Technical data
Operating voltage
AC 230 V +10% / –15%
Frequency
50 / 60 Hz
Power consumption
max. 4 VA
No internal fuse.
External preliminary protection with max. C 10 A circuit breaker in the supply line
required under all circumstances.
Setting range nominal setpoint
0…130 °C
Setting range setpoint changeover
0…50 K
P-band
1…50 K
Integral action time with PI control
selectable (60 / 120 / 180 / 300 s)
Control outputs Y1, Y2
Voltage
Current
AC
24…230 V
max. 2 A
Control outputs Q13
–Q14
Voltage
Current
AC
24…230 V
max. 2 A
Max. cable length copper cable 1.5
mm
2
For signal input B9
For switching input D1
80
m
80 m
Contact sensing (input D1–M)
DC 6…15 V, 3…6 mA
Operation
Climatic conditions
Temperature
Humidity
to IEC
60721-3-3, class 3K5
0
…+50 °C
<95 % r.h.
Transport
Climatic conditions
Temperature
Humidity
to IEC
60721-3-2, class 2K3
−
25…+70 °C
<95 % r.h.
Mechanical conditions
class 2M2
EU Conformity (CE)
CE1T3330xx *)
Degree of protection
IP65 EN 60529
.
Safety class
II to EN 60730
Degree of contamination
normal
The product environmental declaration CE1E3333en *) contains data on
environmentally compatible product design and assessments (RoHS compliance,
materials composition, packaging, environmental benefit, disposal).
Connect
ion terminals for solid wires or
stranded wires
2 × 1.5 mm
2
or 1 × 2.5 mm
2
Sensor
Sensing element
Time constant (with protection pocket)
LG
-Ni 1000 Ωat 0 °C
25 s
Protection pocket
Immersion depth
Perm. nominal pressure
Made of
150 mm
PN10
brass (Ms63)
Weight
0.3 kg
*) The documents can be downloaded from http://siemens.com/bt/download.
Power Supply
Functional Data
Environmental
conditions
Norms and standards
Environmental
compatibility
General

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Connection terminals
R1 M
Y1 Y2
3334G01
L
N
D1 M
Q13 Q14
F2F1
N
B9
B9
Outside sensor
D1
Input for setpoint changeover
F1
Input for Y1
F2
Input for Y2
L, N
Operating voltage AC 230 V
M
Ground
R1
Input for remote setpoint adjuster
Q13
Switching contact
Q14
Y1
Control output for mixing valve OPEN
Y2
Control output for mixing valve CLOSED
Connection diagram
L
M
N
AC 230 V
B9
B9
B1 M
L
NY1
D1 M
Y2
N1
3334A01
K1
Y1
Y1
N
Y2
F1 F2
R1
R1
B1M
Q13
L
N
Q14
M1
Used as a controller, flow temperature with outside temperature compensation, remote
setting unit, setpoint changeover and demand control of a pump
L
Y1
N
AC 230 V
Y2
N3
3334A02
L
N
F1 F2
Y1
Y1
N
Y2
Y1 Y2
L
N
N2
Used as a limiter in connection with a heatin
g zone controller (RVL4…, RVP3…,
RVP2…), e.g. minimum limitation of the boiler return temperature or maximum lim
i
tation
of the boiler flow temperature
B9
Outside sensor QAC22
K1
External contact (e.g. time switch)
M1
Pump
N1
Immersion temperature controller RLE132
N2
Immersion temperature controller RLE132 as a limiter
N3
Heating controller RVL4…, RVP3…, RVP2…
R1
Remote setpoint adjuster BSG21.1
Y1
Actuator of heating circuit valve

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Application examples
3334S01
N1
T
Y1
DHW temperature control
3334S02
N1
T
Y1
Flow temperature control in a
heating zone with a common
flow
3334S03
N3
T
Y1
N2
T
Control of a heating zone with
zone controller RV…, minimum
limitation of the boiler return
temperature with RLE132
3334S04
Y1 N1
T
T
F1
Heat exchanger control with 2
-
port valve in the primary flow
3334S05
N3
T
Y1 N2
T
Control of a heating zone with
zone controller RV…, maximum
limitation of the flow
temperature with RLE132
3334S06
Y2
N1
T
Control of the boiler return
temperature
F1
Safety limit thermostat
N1
Immersion temperature controller RLE132 as a controller
N2
Immersion temperature controller RLE132 as a limiter
N3
Heating zone controller RVL4…, RVP3…, RVP2…
Y1
Heating circuit mixing valve or primary circuit valve or DHW mixing valve
Y2
Mixing valve, boiler return circuit

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Dimensions
Controller with protection pocket
Dimensions in mm

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2002 - 2015 Siemens Switzerland Ltd Subject to change