Flue gas Thermostat Type STM-RW
Contents
1. 3 Mounting 3 2 Mounting the flue gas thermostat The temperature probe must be at right angles to the flow direction and must be exposed to the flue gas for its entire active length The probe end must have a clearance of at least 10 mm in the axial direction d The thermostat is installed without a pocket Secure the flue gas thermostat by its G 1 2 pipe thread min 10mm Fig 3 Installation of temperature probe 3 Mounting 3 3 Opening closing the housing Opening closing Unscrew housing screws 1 the cover Remove cover 2 Fig 4 Opening closing the housing cover 1 Housing screws 2 Cover 3 4 Setpoint adjustment Open housing cover see above Adjust setpoint on the spindle 1 using a screwdriver Fig 5 Setpoint adjustment 1 Spindle 4 Installation 4 1 A 4 2 m m Regulations and notes The electrical connection must only be carried out by properly qualified per sonnel The choice of cable the installation and the electrical connection must con form to the requirements of VDE 0100 Regulations on the Installation of Power Circuits with nominal voltages below 1000 V or the appropriate local regulations If contact with live parts is possible while working on the unit it must be completely disconnected from the supply Earth the instrument at the PE terminal with the protective earth conductor This cable must have2. The flue gas thermostat operates on the principle of rod expansion The immersion tube and the metal rod inside it have different expansion coeffi cients producing a temperature dependent difference in length which acts on the microswitch through a mechanism The microswitch is operated above a set temperature limit After the immersion tube has cooled down by approx 10 to 30 C the microswitch is reset Should the immersion tube break the circuit is opened permanently 2 Instrument identification 2 1 Nameplate Made in Germany Wo STM RW 2 IN stmt System IOIA 230 v 1 80 i C o Aa d fP 54 jiwan o O ERBEN EEE E Fig 1 Nameplate Identify the instrument type by the nameplate and the type designation 2 2 Type designation STM RW 2 Basic type STM rod thermostat with microswitch RW flue gas temperature monitor ATW with changeover contact 2 with internal scale STM RW 2 OS Extra code OS as STM RW 2 but microswitch with 2 separate circuits 1 x break contact n c 1 x make contact n o 3 Mounting d The installation must be run down before mounting the flue gas thermostat Type STM RW 2 The mounting site should be easily accessible and as far as possible free from Le shock and vibration The permissible ambient temperature must be observed note possible radiant heat 3 1 Dimensions 70 M20x1 5 Fig 2 Type STM RW 2
3. Flue gas Thermostat Type STM RW 2 B 60 1540 0 Operating Instructions 10 03 00329536 Please read these Operating Instructions before commissioning the instrument Keep the manual in a place that is accessible to all users at all times Please assist us to improve these operating instructions where necessary Your suggestions will be appreciated Phone 49 661 6003 0 Fax 49 661 6003 607 All necessary settings and where appropriate alterations inside the instrument are described in these operating instructions However if any difficulties should still arise dur ing commissioning you are asked not to carry out any unauthorized manipulations on the unit You could endanger your rights under the instrument warranty Please contact the nearest subsidiary or the head office in such a case Contents 1 Introduction d 1 1 Typographical conventions nennen 4 EI E gel Le ee ee een 4 T2 Note SIGNS asien 4 1 2 Application ue 5 2 Instrument identification 6 2 1 Nameplate nicesine eu 6 2 2 Type Ee Lu d EE 6 3 Mounting 7 za IEN vlt El EE 7 3 2 Mounting the flue gas thermostat nennen 8 3 3 Opening closing the housing Rn nn nn nn nn nn nn nn nennen 9 3 4 Setpoint adjustment nennen 9 4 Installation 10 4 1 Regulations and notes cccccccceeeeeeeeeeeeeeeeeaeeeeeeeeeeeeeeeeeaaaaeeeeeeeeeesaaaa 10 4 2 Electrical connection WE 10 5 Instrument description 11 5 1 Technicaldala EEN 11 5 2 Maintenance fault AAA 11 1 Introd
4. to DIN 16257 NLO NL90 other NL on request position Action to EN 60 730 1 Type 2BL automatic action with micro switch off in operation no auxiliary energy supply required 5 2 Maintenance fault The flue gas thermostat requires no maintenance In the event of a fault please contact your supplier or the head office see back cover for address 11 JUMO GmbH amp Co KG Street address Moltkestra e 13 31 36039 Fulda Germany Delivery address Mackenrodtstra e 14 36039 Fulda Germany Postal address 36035 Fulda Germany Phone 49 661 6003 0 Fax 49 661 6003 607 e mail mail jumo net Internet www jumo net JUMO Instrument Co Ltd JUMO House Temple Bank Riverway Harlow Essex CM20 2TT UK Phone 44 1279 635533 Fax 44 1279 635262 e mail sales jumo co uk Internet www jumo co uk JUMO PROCESS CONTROL INC 885 Fox Chase Suite 103 Coatesville PA 19320 USA Phone Fax e mail Internet 610 380 8002 1 800 554 JUMO 610 380 8009 info JumoUSA com www JumoUSA com
5. at least the same cross section as used for the supply cables Earth cables must be wired in a star configuration to a common earth point that is connected to the protective earth of the supply Do not loop earth cables i e do not run them from one instrument to another Electrical connection Make connection according to the connection diagram pay 4 SW wesch T l Fig 6 Type STM RW 2 Fig 7 Type STM RW 2 0S 10 5 Instrument description 5 1 Limit range Permissible ambient temperature Contact rating Switching differential Switching point accuracy referred to switch off point Mean ambient temperature error Protection Fusing required Operating medium Time constant Technical data standard 40 C to 120 C factory set to 100 C special version 20 C to 400 C factory set to 120 C at probe max 700 C at thermostat head max 80 C min 50 C 10 2 A 230 V AC p f 1 0 6 0 25 A 230 VDC Limit range STM RW 2 STM RW 2 0S 40 C to 120 C 10 to 18 C 10 to 30 C 20 C to 400 C 10 to 22 C 10 to 40 C Limit range Scale start Scale end o o 0 C 0 C 40 C to 120 C 10 C 10 C 20 C to 400 C 0 C 0 C 15 C 20 C switching point displacement referred to the deviation from 22 C 0 07 C C IP54 to EN 60 529 operation under normal conditions 16A flue gas lt 45 sec Operating
6. uction 1 1 Typographical conventions 1 1 1 Warning signs A d Danger This sign is used when there may be danger to personnel if the instructions are ignored or not followed correctly Caution This sign is used when there may be damage to equipment if the instructions are ignored or not followed correctly 1 1 2 Note signs L abc Note This sign is used when your special attention is drawn to a remark Reference This sign refers to further information in other chapters or sections Footnote Footnotes are remarks that refer to specific points in the text Footnotes consist of two parts Marking in the text and the footnote text The marking in the text is arranged as continuous superscript numbers The footnote text in smaller typeface is placed at the bottom of the page and starts with a superscript number Action This sign indicates that an action to be performed is described The individual steps are marked by this asterisk e g Open housing 1 Introduction 1 2 Application Operation The flue gas thermostat is used for monitoring flue gas temperatures on solid fuel boilers in dual operation with oil heated boilers Caution When burning solid fuels it is necessary to ensure that they are approved in accordance with the corresponding local regulations on emission protection If this is ignored corrosive gases may destroy the thermostat
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