Siemens RLE132 Bedienungsanleitung

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.

AOutside temperature

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

LED

Block of DIP

-switches

Setting slider for the setpoint i

crease or

decrease

Setting potentiometer for the P-band

All functions are selected via the DIP switch block which comprises 6 switches:

Function

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

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

24…230 V

max. 2 A

Control outputs Q13

–Q14

Voltage

Current

24…230 V

max. 2 A

Max. cable length copper cable 1.5

For signal input B9

For switching input D1

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

…+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

or 1 × 2.5 mm

Sensor

Sensing element

Time constant (with protection pocket)

-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

D1 M

Q13 Q14

F2F1

Outside sensor

Input for setpoint changeover

Input for Y1

Input for Y2

L, N

Operating voltage AC 230 V

Ground

Input for remote setpoint adjuster

Q13

Switching contact

Q14

Control output for mixing valve OPEN

Control output for mixing valve CLOSED

Connection diagram

AC 230 V

B1 M

NY1

D1 M

3334A01

F1 F2

B1M

Q13

Q14

Used as a controller, flow temperature with outside temperature compensation, remote

setting unit, setpoint changeover and demand control of a pump

AC 230 V

3334A02

F1 F2

Y1 Y2

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

tation

of the boiler flow temperature

Outside sensor QAC22

External contact (e.g. time switch)

Pump

Immersion temperature controller RLE132

Immersion temperature controller RLE132 as a limiter

Heating controller RVL4…, RVP3…, RVP2…

Remote setpoint adjuster BSG21.1

Actuator of heating circuit valve

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Application examples

3334S01

DHW temperature control

3334S02

Flow temperature control in a

heating zone with a common

flow

3334S03

Control of a heating zone with

zone controller RV…, minimum

limitation of the boiler return

temperature with RLE132

3334S04

Y1 N1

Heat exchanger control with 2

port valve in the primary flow

3334S05

Y1 N2

Control of a heating zone with

zone controller RV…, maximum

limitation of the flow

temperature with RLE132

3334S06

Control of the boiler return

temperature

Safety limit thermostat

Immersion temperature controller RLE132 as a controller

Immersion temperature controller RLE132 as a limiter

Heating zone controller RVL4…, RVP3…, RVP2…

Heating circuit mixing valve or primary circuit valve or DHW mixing valve

Mixing valve, boiler return circuit

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Dimensions

Controller with protection pocket

Dimensions in mm

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Siemens Immersion temperature controller RLE132 CE1N3334en

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2002 - 2015 Siemens Switzerland Ltd Subject to change

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