SIEMENS WSx6 Ultrasonic Heat and Cooling Meter Installation Guide

SIEMENS WSx6 Ultrasonic Heat and Cooling Meter

OPERATION

Use
The meter is used for heating or cooling consumption meas-urement in systems with water. The meter consists of a volume measurement unit, two fixed temperature sensors and an electronic unit that calculates the energy consumption based on volume and temperature difference.

General notes
The meter left the factory in a faultless condition where safety is concerned. The manufacturer will provide additional tech-nical support on request. Calibration relevant security seals on the meter must not be damaged or removed. Otherwise, the warranty and calibration validity of the meter will no longer apply.

Safety information

• Only personnel, trained in the installation and opera-tion of meters in heating and cooling systems, may install and remove the meter.
• Only install or remove the meter when the pipes are pressure-less.
• After installing the meter, check the leak-tightness of the system.
• Guarantee and calibration validity will lapse if the calibration relevant security seal is broken.
• Only clean the meter from outside with a soft, lightly wetted cloth. Do not use any spirit or cleaning sol-vent.
• As far as disposal is concerned, the meter is a waste electronic appliance in the sense of European Di-rective and it must not be disposed of as domestic waste

Installation

To install the meter, proceed as follows:

• Determine the place of installation in line with the inscrip-tion on the meter.
• Observe the dimensions of the meter and check whether there is sufficient space available.
• Rinse the system thoroughly before installing the meter.
• Fit the meter vertically or horizontally between two slide valves so that the arrow on the housing and the flow direc-tion match.
• Also observe the installation situations and the following examples of installation.
• Fit the temperature sensors in the same circuit as the me-ter. Please observe admixtures.
• Seal the temperature sensor and the fittings to protect against manipulation.
• If you install the meter for cooling metering, follow the ap-propriate notes

Change mounting place

• For meters with adjustable mounting place, the mounting place can be set manually. Proceed as follows:
• Hold the button several times long (for more than 3 s) until appears on the LCD.
• Press the button briefly repeatedly until or appears on the LCD.
• To change the mounting place, press the button longer (more than 3 sec). The LCD display changes.
• The change happens automatically. The mounting place is locked and can’t be changed after the meter has detected a volume of 10 liters.
• Adjust the temperature sensors according to the installation requirements.

Installation notes

Inlet or outlet sections are not necessary. If you install the meter in the common return of two circuits, determine a place of installation with a minimum distance of 10 × DN from the T-piece. This distance ensures a good mixing of the different water temperatures. You can install the temperature sensors in T-pieces, ball valves, directly immersed or in pockets depend-ing on the version. The temperature sensor ends must reach to at least the middle of the pipe cross section.

Examples of installation (directly immersed sensor)

You can install the meter in any position e.g. vertically or hori-zontally. In order to avoid accumulation of air and disruption in operation, fit the meter in a vertical installation position and not in the uppermost area of a pipeline

Installation notes for sensor adapter set

A mounting set is included for meters with 5.2 × 45 mm tem-perature sensors. With this you can fit the temperature sensor directly immersed into an insert or a ball valve for example.

• Use the fit-up aid/pen provided to mount the O-ring at the installation point.
• Place both halves of the plastic bolting round the 3 notches of the temperature sensor.
• Press the bolting together and screw the bolting hand tight into the installation point up to the stop (tightening torque 3 … 5 Nm).

Installation of cooling meters and combined heat/cooling meters

• Mount the cooling meter so that the black cover on the measuring section points sidewards or downwards.
• Mount the electronic unit separated from the volume meas-uring unit e. g. on the wall.
• Form a loop downwards with the connected cables.
• Mount the protection pocket so that the temperature sensor stands vertically downwards or horizontally.
• Mount the temperature sensor horizontal or vertical in the pipe from below.

Electronic unit

The ambient temperature of the electronic unit must not ex-ceed 55 °C. Avoid direct sunlight. Mount the electronic unit separated from the volume meas- urement unit e. g. on the wall if the water temperatures are below 10 °C and above 90 °C.

Wall fitting (split fitting)

• Turn the electronic unit through 45°.
• Pull the electronic unit away from the volume measurement unit.
• Unscrew the adapter plate from the volume measuring unit.
• Fix the adapter plate on the wall.

Power supply

The meter is equipped with a long life battery for 6 or 11 years of operation. You can find the operating time on the dialplate

Interfaces and Communication

The meter is equipped with an optical interface in accordance with EN 62056-21 as standard. If the meter is equipped with the option “M-Bus”, it is supplied with a 2-wire cable. If the meter is equipped with the option “pulse”, it is supplied with a 4-wire cable. The connection cable can be extended by fitting a junction box.

The meter consists of a 7-digit LCD displaying various values.

• Identification previous year value
• Previous year value
• Maxima
• Previous month value
• Identification previous month value
• Activity display at flow
• Calibrated value

Switching the display

Proceed as follows to switch between the display values Press the button briefly (for less than 2 sec.) to show the next line of the current loop. After the last line is displayed, the first line comes up again. Hold down the button (longer than 3 sec.) in order to dis-play the next loop. After the last loop is displayed, the first loop comes up again. If you do not operate the meter for 30 sec. in the user loop “LOOP 0”, the meter changes to the standard display. If you do not operate the meter for 30 min. in the loops “LOOP 1 … 4”, the meter changes to the standard display

User loop “LOOP 0”

Current values “LOOP 1”

Previous month’s values “LOOP 2”

General/Communication “LOOP 3”

Other “LOOP 4”.

Parameterization

When the LCD displays the code input, you can access the parameterization operation by entering the code. You can set date and M-Bus primary address in the parameterization oper-ation for example. For more detail see the separate parameter-ization instruction.

Getting started

For activation proceed as follows:

• Open the slide valves slowly.
• Check the heating system for leak-tightness.
• Vent the heating system carefully.
• Press the button on the meter briefly.

The message “F0” disappears after 10 sec.

• Check the measured values for flow and temperatures for plausibility.
• If needed vent the heating system until the flow display is stable.
• Fit the user locks to the fittings and the temperature sen-sors. The scope of supply includes two self lock seals for sealing a sensor and the connecting fitting.
• Read the meter status for energy, volume, operation and missing time and note the values.

Error messages for incorrect installation

Error “incorrect flow direction (negative)”
Check that the flow direction arrows on the volume measurement unit match the flow direction of the system. If the directions do not match, turn the volume measurement unit by 180°.
Error “negative temperature difference”
Check whether the sensors are installed in the right circular flow (flow and return flow interchanged). Use only a meter suitable to the mount-ing place.
Heat meter
Temperature sensor in the flow-pipe with higher temperatures; temper-ature sensor in return-pipe with lower temperature
Cooling meter
Temperature sensor in the flow-pipe with lower temperatures; tempera-ture sensor in return-pipe with higher temperature

Functional details

If the respective operation thresholds are exceeded and flow and temperature difference are positive, the meter summates the energy and the volume. If the operate margin is gone below a “u” is displayed at a leading point for the flow, power and temperature display. For a positive flow the activity display appears in the user loop in the LCD. All segments of the display are switched on for control purpos-es during the segment test. The flow, power and temperature difference are recorded with the appropriate +/- signs. The operating hours are counted from the first connection of the power supply. The meter saves “operating time with flow” as soon as a positive flow is recognized. Missing hours are summated if there is a fault and the meter is thus unable to take a measurement. Stored maximum values are marked with an „ “in the lower right hand area of the LCD.

Error codes

The meter continuously runs a self-diagnosis and can thus recognize and display various installation or meter errors

correct if necessary
if necessary in exchange with:
DIFF nEG| Negative temperature difference| Check installation point of the temperature sensors; exchange if necessary
if necessary in exchange with:
F0| No flow can be measured| Air in the measurement unit/pipe, bleed air from pipe (delivery condition)
F1| Interruption in the hot side temper- ature sensor| Inform service department
F2| Interruption in cold side tempera- ture sensor| Inform service department
F3| Electronics for temperature evalua- tion defective| Inform service department
F4| Battery flat| Inform service department
F5| Short-circuit hot side temperature sensor| Inform service department
F6| Short-circuit cold side temperature sensor| Inform service department
F7| Error in the internal memory holding| Inform service department
F8| Errors F1, F2, F3, F5 or F6 for longer than 8 hours, recognition of attempts to manipulate.| Measure dependent on error code. Error message F8 must be reset by service department.
F9| Error in the electronics| Inform service department

Technical data

General

• Measuring accuracy Class 2 or 3 (EN 1434)
• Environment class A (EN 1434) for indoor installation
• Mechanical class M1 / M2 *)
• Electromagnetic class E1 *)
• *) according to 2014/32/EU Directive on Measuring Instruments
• Ambient humidity < 93% rel. humidity at 25 °C, without condensation
• Max. height 2000 m above sea level
• Storage temperature – 20 … 60 °C

Electronic unit

• Ambient temperature 5 … 55 °C
• Housing protection rating IP 54 according to EN 60529
• Power supply Battery for 6, 11 or 12 years
• Operation threshold f. T 0.2 K
• Temperature difference T 3 K … 80 K
• Temperature measurement range 0 … 180 °C
• LCD 7 digit
• Optical interface Standard, EN 62056-21
• Communication Optional
• Separability Always, cable length 1.5 m

Temperature sensor

• Type Pt 500 according to EN 60751, not detachable
• Connection type Pt 500, 2 wire technology
• Cable length 1.5, 3, 5 m
• Construction type Bolb sensor ø 5.2 × 45 mm; DS direct short, M10 × 27,5 mm
• Temperature range 0 … 105 °C; 0 … 150 °C

Volume measuring unit

• Protection class P 54 according to EN 60529; optional IP 65 / IP 68
• Mounting place Hot side / cold side
• Installation position Any, horizontal or vertical
• Flow straightening None
• Measuring range 1:100
• Temperature range 5 … 105 °C

EC DECLARATION OF CONFORMITY

Landis+Gyr GmbH takes sole responsibility for the issue of this declaration of conformity. It declares herewith that the above named product meets tne requirerments of the folowing directives and lawS.

These respective harmonised standards and normative documents were taken as a basis

Documents / Resources

| SIEMENS WSx6 Ultrasonic Heat and Cooling Meter [pdf] Installation Guide
WSx6 Ultrasonic Heat and Cooling Meter, WSx6, Ultrasonic Heat and Cooling Meter, Heat and Cooling Meter, Ultrasonic Meter, Meter
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References

• Dominio registrado en Tecnocrática
• Building technology | Products & Services | Siemens Global
• Building technology - Siemens Global

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