Wohler DM 2000 User manual

Operating Manual

Digital Manometer

Best.-Nr. 23861 –2016-07-07

Wöhler DM 2000

UK & Ireland Partner

A1 Services Limited

5 Enterprise Way

Jubilee Business Park

Derby

DE21 4BB

Tel +44 (0)1332 382233

Email [email protected]

Garantie und Service

Content

1General ................................................10

1.1 Information about this operating manual......10

1.2 Symbols used in this operating manual .......10

1.3 Proper use...................................................10

1.4 Basic equipment..........................................10

1.5 Disposal.......................................................11

1.6 Manufacturer's address ...............................11

2Technical Data ....................................12

3Components........................................13

4Flue Draft Test.....................................14

5Temperature........................................16

6Printing ................................................16

7Accessories.........................................16

8Warranty and Service.........................17

8.1 Warranty......................................................17

8.2 Service.........................................................17

General

1General

1.1 Information about this

operating manual

This operation manual allows you to work safely

with the Wöhler DM 2000 Digital Manometer.

Please keep this operating manual in a safe place

for future reference.

The Wöhler DM 2000 Digital Manometer should

be employed by professionals for its intended use

only.

We accept no responsibility for any damage or

loss resulting from any failure to observe this op-

erating manual.

1.2 Symbols used in this

operating manual

WARNING!

Not following this warning can cause injury or

death.

NOTE!

Highlights tips and other useful information.

1.3 Proper use

The meter is suitable for the fine tuning of boilers,

The draft measurement and the differential pres-

sure measurement

Einstellungen des Gasdrucks an Gasfeuerstätten,

zur Messung des Gebläsedifferenzdrucks ab 1

Pa/0,01 mbar sowie zur Messung des Schorn-

steinzugs.

1.4 Basic equipment

Meter

Scope of supply

Wöhler DM 2000

Digital Manometer

with batteries

Hose 1.5 m

General

1.5 Disposal

Do not dispose of electronic equipment along with

household waste. Dispose of electronic equipment

in accordance with valid environmental regula-

tions.

Damaged rechargeable batteries are considered

hazardous waste. Dispose of damaged or used

rechargeable batteries at the collection points

provided.

1.6 Manufacturer's address

Wöhler Technik GmbH

Schützenstr. 41

33181 Bad Wünnenberg, Germany

Tel.: +49 2953 73-100

Fax: +49 2953 73-250

E-Mail: [email protected]

Technical Data

2Technical Data

Beschreibung

Angabe

Differential Pressure

Range

± 2 bar

Accuracy

< 3 % o.r.

± 200 Pa whichever is

greater

Temperature (optional)

Range

-20 °C up to +99 °C

Accuracy:

< 1 °C

Resolution:

0.1 °C

Unit

Depending on the

version mbar or Pa

Power supply

2 batteries AA, 1,5 V

Storage temperature

-20 °C up to +60 °C

Working temperature

-5 °C up to +60 °C

Components

3Components

negative pressure

positive pressure

Opperator button :

Press button to turn on

Press during measurement to zero

Press twice during measurement to print

Hold button for 3 sec. to turn off

IR port

temperature

Flue Draft Test

4Flue Draft Test

Safety Warning!

You must be qualified to work on heat appliances and gas, oil or other fuel supplies. For

further instructions contact your local authorities before you start the job.

The constant flow of flue gases at the correct rate of

flow with the least possible variation is required for

safe and efficient combustion. Insufficient flue draft

will cause ignition difficulties and is likely to result in

fume emission and potential health risk. Too much

draft will make control of the fire difficult and may

result in overheating. In this instance, fitting a draft

stabiliser may be required. An appliance manufac-

turer will specify a range of flue draft conditions

under which their appliance will operate.

Choosing the correct place for

measuring

The correct place for measuring the chimney draft is

close to the appliance and at least 2 x flue-pipe

diameter above the spigot and 15 cm away from any

draft stabiliser. Some appliances include purpose

made flue draught test points for insertion of test

equipment sampling probes. Where no purpose-

made flue draught point is included a suitable point

will need to be provided adjacent to the appliance

outlet. In some instances, a draft measurement can

be taken by temporarily removing a sweeping ac-

cess cover and using a cone or plate with a hole in

the centre to prevent secondary air entry and to

enable the sampling probe to be inserted.

A flue draught reading should be taken before the

appliance is lit to identify any potential problems

which will result from down draught.

Flue Draft Test

Procedure for Taking

Flue Draft Readings

The typical procedure when using a Wohler me-

chanical draft gauge is as follows:

7. Visually inspect the draft gauge for signs of

damage and/or defect.

8. Ignite a small amount of fuel in the appliance

and leave to burn for 20 minutes.

9. Turn on the unit and allow the display to stabi-

lise and settle to zero.

10.Connect the rubber hose to the negative con-

nector on the unit.

11.Connect the stainless steel probe to the end of

the rubber hose.

12.Insert metal sampling tube into test point pre-

venting secondary air entry.

13.Wait approximately 30 seconds for stabilisation

and then take a draught reading.

NOTE!

Atmospheric or weather conditions may cause in-

correct draft readings.

Depending upon the draft reading obtained, it may

be necessary to adjust the appliance air control

devices and/or the flue draft stabiliser (if fitted).

Any adjustment should be made in accordance

with the manufacturer’s instructions and the

draught reading should be retaken after each ad-

justment.

If acceptable draft conditions are not able to be

achieved, the appliance should be taken out of

service and where appropriate the HETAS Unsafe

Situations Procedure should be followed whilst the

fault is rectified. Refer to Unit HTU03K Section 8

for more details.

Temperature

5Temperature

The meter has an internal temperature sensor. An

external temperature sensor can be connected to

the bottom of the meter, see accessories.

NOTE!

The temperature reading will not appear in the

display but only on the printout.

6Printing

The pressure and the temperature readings can

be printed on the Wöhler TD 100 Thermoprinter,

see accessories.

Switch on the printer.

Position the meter next to the printer, so that

the IR ports of meter and printer are opposite

to each other.

Start printing with a doubleclick on the oprea-

tion-button of the Wöhler DM 2000.

7Accessories

Hose with draft probe 6 mm Ø, 200 mm long, cone 6 mm Ø and

hose 1,5 m long

Art n° 4578

Pressure Measurement Set for Wöhler Digital Manometer

Art n° 56126

Combustion air temperature probe, 280 mm, with 1.7 m cable

Art n° 9611

Warranty and Service

8Warranty and Service

8.1 Warranty

Each Wöhler DM 2000 will be tested in all func-

tions and will leave our factory only after extensive

quality control testing.

If used properly, the warranty period for the DM

2000 will be 12 month from the date of sale. Not

covered by the warranty are the batteries and the

costs for transport and package.

Service by non authorized personnel or making

modifications to the meter voids any warranty.

8.2 Service

We see SERVICE as a very important element in

our business. That is why we are still available to

you even after the guarantee period has expired.

An immediate repair will be carried out if you

bring your meter to one of our approved ser-

vice centers listed below.

You can obtain immediate help from our

engineers by telephone.

UK & Ireland Partner

A1 Services Limited

5 Enterprise Way

Jubilee Business Park

Derby

DE21 4BB

Tel +44 (0)1332 382233

Email [email protected]

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