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PRS 50 - Installation & Operating Manual -

850652-00

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Содержание PRS 50

Страница 1: ...Original Installation Operating Manual E N English Blowdown Timer PRS 50 850652 00 ...

Страница 2: ... or blowdown pipes 16 Electrical connection safety notes 16 Wiring diagram for the PRS 50 blowdown timer 17 Electrical connection 18 Connecting the 24 V DC power supply 18 Connecting the intermittent blowdown valve alarm output contacts 18 Notes on connecting inductive loads 18 Connecting the standby burner input 24 V DC 18 Connecting the Manual intermittent blowdown input 18 Connecting the Limit ...

Страница 3: ...can find the latest Installation Operating Manuals on our website http www gestra com documents brochures html Copyright All rights reserved Any misuse particularly reproduction and dissemination to third parties is not permit ted The General Terms Conditions of GESTRA AG apply Scope of delivery Product package 1 x Blowdown timer PRS 50 1 x Installation Operating Manual ...

Страница 4: ...ns Please also read the instructions for use of any accessories The Installation Operating Manual is part of the product package Keep it in an easily accessible location Availability of this Installation Operating Manual Make sure this Installation Operating Manual is always available to the operator If you pass on or sell the equipment to a third party please also hand over the Installation Opera...

Страница 5: ... that results in death or serious injury WARNING Warning of a dangerous situation that may possibly result in death or serious injury CAUTION CAUTION Warning of a situation that may result in minor or moderate injury ATTENTION ATTENTION Warning of a situation that results in damage to property or the environment ...

Страница 6: ...et between 1 and 96 hours intermittent blowdown interval For efficient operation the intermittent blowdown interval can be configured in line with the sum total of burner firing times The duration of intermittent blowdown can be set between 1 and 10 seconds For large boilers repeated intermittent blowdown pulses may be required Repetition can be set between 1 and 10 with an interval from 1 10 seco...

Страница 7: ...s for the system components used You will find the latest Installation Operating Manuals for the system components named here on our website http www gestra com documents brochures html Applicable directives and standards The PRS 50 blowdown timer has been tested and approved for use in the scope governed by the following directives and standards Directives Directive 2014 35 EU Low Voltage Directi...

Страница 8: ...6 it may be faulty Perform failure analysis Only replace faulty equipment with identical equipment from GESTRA AG Required personnel qualifications Activity Personnel Integration in control system Specialist staff Plant designer Installation electrical connection bringing into service Specialist staff Electrician installer Operation Boiler service technician Staff trained by the plant operator Mai...

Страница 9: ...he terminals an intermittent blowdown pulse is triggered In normal operation the remaining runtime until the next intermittent blowdown pulse is counted down and displayed Configuration as burner function An external 24 V DC command see Fig 4 wiring diagram signals burner firing The remaining runtime until the next intermittent blowdown pulse is counted down and displayed The S B LED lights up yel...

Страница 10: ...y knob and the 7 segment display Display and actions in the event of errors Errors in the PRS 50blowdown timer the electrical connection or in settings are shown with an error code An alarm is triggered in the event of an error The alarm relay opens By turning the rotary knob you can change the parameters simulate the alarm or initiate an intermittent blowdown pulse ...

Страница 11: ...angeover relay Alarm output 1 x volt free N O contact as an alarm contact open in the event of an error Maximum switching current 8 A at 250 V AC 30 V DC cos ϕ 1 Contact material AgNi0 15 AgSnO2 Inductive loads must have interference suppression RC combination as per the manufacturer s specification Indicators and controls 1 x green 4 digit 7 segment display for showing status information 3 x LEDs...

Страница 12: ... 55 C at power on Storage temperature 20 C 70 C Transport temperature 20 C 80 C 100 hours Air humidity max 95 non condensing Only switch on after a 24 hour defrosting period Housing Housing material Lower section of black polycarbonate glass fibre reinforced front of grey polycar bonate 2 x 8 pole terminal strips removable separately Max cross section per screw terminal 1 x 4 0 mm2 solid or 1 x 2 ...

Страница 13: ... désembouage PRS 50 Betriebsanleitung beachten See installation instructions Voir instructionsde montage 250V T2 5A _ Standby Burner GESTRA AG Münchener Str 77 28215 Bremen Made in Germany Tamb 55 C 131 F T Alarm 24V DC 16 17 18 19 20 21 22 23 40 IP rating Protection class Admissible ambient temperature Outputs wiring diagram Standby burner input Supply voltage Power con sumption Required external...

Страница 14: ...d with the following factory default settings Code switch setting Sliding switch white 1 to 4 OFF Configuring the standby burner function see page 20 Fig 6 Interval Ti 24 hours Pulse duration tP 3 seconds Number of pulses nP 1 Pause between pulses tb 2 seconds Limit switch monitoring SW no Password PW oFF ...

Страница 15: ...with 7 segment display status LEDs and rotary knob see page 21 C Lower terminal strip D 4 pole code switch for configuring the equip ment function E Housing F Support rail TH 35 Functional elements and dimensions The code switch can be accessed by removing the lower terminal strip Equipment settings see page 20 Fig 3 A B C F D E 1 ON 2 3 4 15 ...

Страница 16: ...nto place Safety notes for maintenance work on the intermittent blowdown valve or blowdown pipes DANGER DANGER Severe scalding of the entire body is possible During maintenance work on the intermittent blowdown valve or pipe a blowdown pulse can be triggered inadvertently Switch off the supply voltage to the PRS 50 blowdown timer and seal off the control fluid pipe before performing maintenance wo...

Страница 17: ...ig 4 Supply voltage Fuse provided by customer M0 5A Button N O contact for manual blowdown Limit switch Standby burner input for an external command intermittent blowdown OFF burner active Alarm 17 17 18 18 19 19 20 20 21 21 22 22 2 3 4 5 6 7 ZEP 24 V DC M 0 5 A 24 V DC Intermittent blowdown valve ...

Страница 18: ...s All connected inductive loads such as contactors and actuators must have interference suppression using RC combinations as per the manufacturer s specifications Connecting the standby burner input 24 V DC 24 V DC input for external command intermittent blowdown OFF burner active standby burner configuration Maximum cable length 30 m Connecting the Manual intermittent blowdown input Connect a but...

Страница 19: ...ion of the PRS 50 blowdown timer using code switch D see Fig 3 at any time if necessary Make changes before installing the blowdown timer when access is easier You will need the following tools Slotted screwdriver size 2 5 fully insulated Proceed as follows 1 Switch off the supply voltage to the equipment or plant 2 Carefully unscrew the lower terminal strip with a screwdriver then remove see Fig ...

Страница 20: ...ding switch white see Fig 3 Configuring the standby burner function PRS 50 blowdown timer Code switch D Function S1 S2 S3 S4 Reserve default OFF Reserve ON Standby function contacts 22 23 default OFF Burner function contacts 22 23 ON Reserve default OFF Reserve ON Reserve default OFF Reserve ON Fig 6 ...

Страница 21: ...age The display is on and the LEDs light up briefly Display S xx software version t 02 equipment type PRS 50 System test takes approx 3 seconds Valve output contact 17 18 open Alarm output contact 19 20 open Countdown of two minute remaining runtime until inter mittent blowdown after startup Configuration Standby function No input active Display Remaining runtime mm ss Valve output contact 17 18 o...

Страница 22: ... 19 20 closed Countdown of remaining runtime until next intermittent blowdown Burner input active Display Remaining runtime 1 h hh mm Remaining runtime 1 h mm ss All LEDs Off Valve output contact 17 18 open Alarm output contact 19 20 closed Behaviour in the event of an alarm error code display If there is an error in the PRS 50 blowdown timer e g the end position was not reached when limit monitor...

Страница 23: ...eturns to Remaining runtime The changed intermittent blowdown interval ti is applied after the next blowdown 2 When you have selected the parameter press and hold the rotary knob until the current value of this parameter flashes on the display If you do not set a parameter within 10 seconds the process is aborted quit and the old parameter value is retained 4 Press and hold the rotary knob for app...

Страница 24: ...b Pause between pulses 1 to 10 seconds SW Limit switch monitoring no monitoring is not active YES monitoring is active SW In Limit switch status Press and hold the rotary knob to ascertain the status of the limit switch OPEn switch open CLOS switch closed Press the rotary knob briefly to exit the display tSt o Valve relay test Testing the valve relay see page 25 tSt A Alarm relay test Testing the ...

Страница 25: ...e rotary knob and hold until the end of the test Display tSt A flashes Alarm LED On Off The test takes place in a 3 second interval 3 s alarm contact 19 20 open Alarm LED On 3 s alarm contact 19 20 closed Alarm LED Off The test continues until you release the rotary knob Monitoring the limit switch If limit switch monitoring is enabled a test is performed to determine whether the switch is open at...

Страница 26: ...the limit switch setting use menu item SW In for diagnosis Initiate manual blowdown and check that the end position has been reached Reset the alarm E 030 Error RTC error Replace the PRS 50 blowdown timer E 097 Error Walkthrough application error Internal error Replace the PRS 50 blowdown timer E 098 Error Walkthrough test error Internal error Replace the PRS 50 blowdown timer E 099 Error Internal...

Страница 27: ...ontaminated equipment If products have come into contact with media that are hazardous to health they must be drained and decontaminated before being returned to GESTRA AG Such media include solid liquid or gaseous substances mixtures of these or radiation GESTRA AG can accept returned products only if accompanied by a completed and signed return note and also a completed and signed declaration of...

Страница 28: ...ng European Directives Directive 2014 35 EU Low Voltage Directive Directive 2014 30 EU EMC Directive Directive 2011 65 EU RoHS Directive Please see our Declaration of Conformity for details on the conformity of our equipment with European directives The current Declaration of Conformity can be found online at www gestra com or can be requested from us ...

Страница 29: ...29 PRS 50 Installation Operating Manual 850652 00 For your notes ...

Страница 30: ...30 PRS 50 Installation Operating Manual 850652 00 For your notes ...

Страница 31: ...31 PRS 50 Installation Operating Manual 850652 00 For your notes ...

Страница 32: ...5 Bremen Germany Phone 49 421 3503 0 Fax 49 421 3503 393 e mail info de gestra com Web www gestra com 850652 00 04 2021cm 809116 00 GESTRA AG Bremen Printed in Germany You can find our authorised agents around the world at www gestra com ...

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