Danfoss BCP1H Installation Manual

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Danfoss BCP1H Installation Manual Manual pdf 2 page image

2 IC.PI.P10.K8.53 / 520B8307 © Danfoss | DCS (az) | 2017.11Technical dataBCP pressure controller with auto reset (fig.1)BCP pressure limiter with manual reset (fig.2)Type Range[bar]Max. workingpressure*MWP[bar]Controller Min. limiter Max. limiterBCP01 – – 0.03 – 0.3 0.4BCP1 – – 0.1 – 1.1 6BCP2 BCP2L BCP2H 0 – 2.5 10BCP3 BCP3L BCP3H 0 – 6.0 16BCP4 BCP4L BCP4H 1 – 10 25BCP5 BCP5L BCP5H 2 – 16 32BCP6** BCP6L BCP6H** 5 – 25 40BCP7** – BCP7H** 10 – 40 63Max. test pressure: 1.1 × MWPMin. test pressure: 1 barMedia: steam, water, airMax. allowable vacuum: 0.5 bar (BCP1 type only)Max. media temperature: max. 120 °CAmbient temperature: -20 − 70 °C ***Enclosure: IP65Pressure connection: G ½AAction type according to EN 60730:Type BCP 2BType BCPL/ BCPH 2BD*) If the system pressure exceeds MWP then accuracy of the switchsetting can be lost.**) Pressure switches with double bellows***) For BCP01 type: -10 – 70 °CInstallationIn order to prevent malfunction of the pressure switch, theinstallation must be carried out acc. to the below description.The cover of BCP should never be dismounted. This is notnecessary neither for installation nor for use of the switch.The plug should be mounted after installation of the pressureswitch.Mount the pressure switch directly on the pipe. Always use awrench. (fig.3).Damp strong pressure pulsations. A damping loop will often besufficient. Insert a water filled loop as a temperature barrier - forexample a 10 mm copper tube - if there is a risk of the pressureconnection to the switch becoming heated to more than 120 °C.Steam boilers:Connecting pipes for the limiter should be connected to thesteam space of the boiler and if necessary, the limiter shall beprotected against the steam temperature by a water seal.If isolating valve is fitted on the connection pipe, the valve mustbe fitted with a position locking device.Fully flooded hot water generators:The limiter should be connected to the supply pipe before thefirst shut-off valve. The limiter body should be installed verticallyso that dirt does not enter the limiter. If there is the possibility ofsludge build-up in the connection pipe it should be possible topurge the pipe. Such purging must not remove the water seal orintroduce dirt into the water seal.In addidition, the connection pipe and its boiler connection mustbe designed for cleaning and inspection and have a clear bore ofat least:1. Where pipe supplies only the limiter:ø8 mm - if pipe is less than 1m longø15 mm - if pipe is more than 1 m long2. Where pipe supplies the limiter in addition to other limiters:ø20 mm - for all lengths of pipes.Functional testing of the limiterSince the pressure limiter has no internal possibility for functionaltesting, there has to be a provision made for functional testing ofthe device at the boiler site.The result of the test must be clearly visible to the boiler operator.The test function should not decrease the boiler safety or lead thepressure limiter to become inoperable e.g. by possible permanentoverride.WiringElectrical connection:Plug DIN 43650, Pg 11 (fig. 4)Contact loadType A contactsgold plated silverType B contactssilver-cadium oxideWhen used as goldcontacts:Min. 1 mA, 5 VMax. 100 mA, 30 VWhen used as silvercontacts 1)Max:AC-1: 6 A, 250 V 2)AC-15: 1 A, 250 V 3)DC 13 10 W, 250 V 4)Min. 500 mA, 250 VMax:AC-1: 10 A, 250 V 2)AC-15: 2 A, 250 V 3)DC 13 50 W, 250 V 4)1) If used with current higher than 100 mA and voltage higher than 30 V the goldlayer will be burned away and the unit can not be used as gold again.2) AC-1 Ohmic load, cosφ 1.3) AC-15 inductive load like coiland contactors with cosφ 0.3.4) DC 13 Direct current load.Using the appliance in other than described AC-1, AC-3, AC-15 orDC-13 modes, may not be as a limiter.Short circuit protectionThe BCP contact system and any co-operated external contactorsor relays should, against the effects of short circuits, be over-current protected with 0.6 safety factor.It means that the nominal current of the device, as stated by themanufacturer, is to be multiplied by a safety factor of 0.6.Example:Rated load for AC-15 is 2A.Safety factor is 0,6 in consequence: fuse = 2A x 0,6 = 1,2A or less.Expected electrical life time:Min. 250.000 cycles under full contact load.AdjustmentIMPORTANT:- Do not adjust pointers beyond the highest or lowest indicatormarks on the scale plate, as this may cause inaccurate switchoperation.- Do not apply torque greater than 50 Ncm as it can damage thepointers.- The scale plate is only for reference and for more precisesetting a pressure gauge should be used.- Low Switching Point must be above absolute vacuum!If the differential is set too high on the controller then it will notswitch.Pressure controllerScale plate directly indicates High Switching Point (HSP) andDifferential.1. Set High Switching Point (HSP) by adjusting range screw (fig. 7)2. Then set Differential by adjusting differential screw (fig. 8)3. Low Switching Point (LSP) is equal to High Switching Point (HSP)less Differential:LOW = HIGH − DIFFERENTIALENGLISH