LPM 2251
Contents
1. It is then possible to lift the controller diagonally upwards and off the rail OFL 4101 000 18 Sep 2002 MOUNTING Procedure for mounting controller on a wall 1 Drill holes for the three screws as shown in the adjacent scale drawing 2 Remove the backplate from the electronic part 65 3 Mount the backplate and the metal brace 13 4 Connect the cables 3h 5 Push the electronic part ii a onto the backplate and secure the controller into the metal brace with the fastening device Procedure for mounting controller in a panel 1 Make an opening in the panel as shown in the adjacent scale drawing The maximum panel thickness is 5 mm 2 Remove the backplate from the electronic part see above Remove the terminal blocks from the backplate 3 Place the controller in the panel and lock it in position by tightening the two locking screws Seal the holes using the two gasket sections It is not necessary to install the metal brace when mounting panel Fastening device 4 Attach the terminal blocks to the pins on the backplate of the controller Note that the terminal blocks are coded so they cannot be interchanged lt is also possible to use the backplate when mounting the controller in a panel OFL 4101 000 18 Sep 2002 Outdoor temperature sensor EGU Mount the sensor to an exterior wall facing north or north west Place it approximately 3 m above g2. 20 10 0 10 20 DampOutside 2 12 LPM 2251 Morning boost Boost time LPM 2251 calculates the time of changeover to daytime opera tion automatically This means that the controller starts the heating earlier to obtain correct temperature at the beginning of occupancy time The calculation is a function of a damped outside temperature curve Relay output K2 is closed during morning boost Time in minutes 105 45 10 5 0 9 10 15 20 DampOutside Boost temp The supply temperature is increased during morning boost The level of increase is a function of a damped outside tempera ture curve Temp increase 20 10 0 10 20 DampOutside Ramp function LPM 2251 has a built in ramp function which prevents to rapid increase of the supply radiotor temperature The increase rate of the supply setpoint is adjustable This function eliminates temperature related flick sounds in the pipes during morning boost Control loop The final supply temperature setpoint is calculated from Outdoor reset control curve Parallel displacement of control curve Night setback temperature Morning boost temperature The calculated setpoint is then minimum and maximum limited The supply temperature is controlled towards the final setpoint with a Pl regulator with adjustable P band OFL 4101 000 18 Sep 2002 TIME CONTROL amp MANEUVER Radiator time program Time control of day night operation mode for the radiator circuit is
3. Thermistor inputs Type Of thermistor ccccccceceeeeeeeeeeeeeeees 1800 ohm 25 C Measurement range 50 C to 120 C Relay outputs Max voltage sssseeeeeeerennennennennnnnnnnnn 250 V AC Max current av 2A Inputs Sensor inputs B1 B4 U1 U4 thermistor input see above Extended daytime operation X1 closing contact to M Pump alarm X2 eesuss closing contact to M Outputs Circulation pump K1 relay output see above Morning boost K2 relay output see above Buzzer alarm K3 relay output see above Weekly program 2 KA relay output see above Open heating valve K5 relay output see above Close heating valve K6 relay output see above Domestic hot water valve Y1 0 10 V DC or 2 10 V DC Additional connection to outdoor temp Y2 0 10 V DC MOUNTING Calendar clock ACCUrAaCQy ccccccceeeeeeeeeeeeeeeeees 12 minutes year at 25 C Reserve running time eeeeseeeeeesse 48 hours Enclosure rating cse eas Dottor oes nsiPes IP 40 front IP 54 Ambient temperature een e 0 C to 50 C TO US erin i T 20 C to 50 C Ambient humidity sseeessssssse max 90 RH Electromagnetic com
4. Drawing number OFL 4101 000 18 Sep 2002 LPM 2251 9 12 PARAMETERS PPNo Parameter S Min Max Step Default Change Comments P15 Setime 00 00 2359 0001 00 00 jhowmiue P16 Setdae 0101 12 31 0001 01 01 month day P17 SetYer o 999 j1 200 P18 Curvepointxt 9 O 19 C jie s Seecuvebelw P19 Curve pointyo P20 120 C 1 C 60 C See curve below P20 Curvepointyt P21 P19 1c as Seecurve below P21 Curve poity2 5 P20 1 C 18 See curve below Min supply temperature o P23 lose jtoc See curve below P23 Max supply tmperature P22 120 C 05 C 80 C j Seecuvebelow Radiator Supply C P 23 80 70 XO X1 X2 30 25 20 15 10 5 0 5 10 15 20 25 Damped Outdoor C P24 P bana Radcontroller 10 200 o5 10 C 5 50 0 0 00000 Em nememdmuur os mos se os 50 0 05 P26 Max inor ate Rad setp 1 C min 50 Cim 0 1 C m 2 C min Ramplimtaion m Fe ue o Night y asd Morning boost C N 100 10 P 33 P 33 0 20 15 10 5 O 10 15 20 25 20 15 10 5 0 5 10 15 20 25 Damped Outdoor C Damped Outdoor C 10 12 LPM 2251 OFL 4101 000 18 Sep 2002 PARAMETERS PNo Parameter Min Max Step Default Change Comments See curve Imin P39 Boost time at 10 C y1 440m fmm 20min B
5. Increrase decrease parameter value The buttons on the operator panel The a and Y buttons are used to select a parameter The and buttons are used to change a parameter value The button is used as Enter to confirm a parameter change The button is also used to toggle betweenfilled and blank segments in the 24 hour time bar of the weekly time programs OFL 4101 000 18 Sep 2002 6 12 LPM 2251 INSTALLATION There should be a switch in order to break the power to the controller It does not have to be a separate switch for the controller instead it can also cut the supply voltage to the in stallation The function of the switch should be marked clearly Wiring diagram 230 V Rad Out Rad Rad Hws Hws Cold Extra Supply Side Circ Retum Temp Circ Water Sensor 24 or 230 V Oo G B1M GO m ni P01 T n ds G VHVC Pump on r Actuator Actuator HotWater Heating TACForta TACForta ekProg2 ExtendedDay MornBoost e Wi Connection Output dom hot water control Measurement neutral Output outdoor temp signal Measurement neutral Connect the cables to the controller as shown in the wiring Hot water temperature di agram Common to K5 and K6 Hot water circ temperature Output open heating valve Cold water temperature Output close heating valve Measurement neutral WARNING All power current cables should Rad supply temperature T SHURE hase cent cece BN
6. carried out by a weekly time program Weekly time program 2 The hot water service temperature control loop can use two different setpoints The switch over is carried out by the weekly time program 2 This weekly time program also operates output K4 for time control of external devices Holiday time program The Holiday time program can hold up to six holiday periods Each holiday period is defined by a start date and a stop date Daylight saving LPM 2251 has automatic change over from summer to winter time Maneuver The following operation modes can be set by the OP panel Night Continuous Night mode Auto Time controlled operation mode Day Continuous Day mode Hand Manual operation FUNCTION PUMP CONTROL The logic applied to pump control is designed to use the building s accumulated heat as effectively as possible Consequently the pump operates only when there is an actual heat demand Cut Off The pump is stopped and the control valve closes when the outside temperature exceeds an adjustable cut off temperature The pump runs 5 min before it stops Pump stop The pump is stopped and the control valve closes when the calculated supply temperature setpoint drops below an adjustable limit The pump runs 5 min before it stops Pump restart The time for restarting the pump after a stoppage can be set to between 0 and 12 hours FUNCTION HWS CONTROL Temperature control The hot water services temperature is
7. 9 be installed by an authorised electrician 24 V AC zero Outdoor temperature 8 Safety ground Rad circ temperature 7 Common to KT and K Rad return temperature 6 The controller has a number of cable entries in the back Output pump control Measurement neutral 5 Ensure that signal cables and mains cables are pulled A ORE lees AAE EEO through separate cable entries in the back and are kept well Common to K3 and K4 Input extended daytime operation 3 Output buzzer alarm Input pump alarm 2 apart Output weekly program 2 Measurement neutral 1 The rail with three screws in the middle of the back is insulated It can be used as measurement neutral A The outdoor temperature signal Y2 is connected to the input connection must then be made between the rail and of the outdoor temperature sensor B2 in those controllers measurement neutral M in the terminal block LPM 2000 which have no outdoor sensor of their own All equipment which is connected to the controller must The controller has 25 cable entries in the back Ensure that comply with the following standards the signal cables and the mains cables are pullled through separate cable entries and are kept well apart EN 60 742 or other applicable safety standard for air handlers which provide ELV type power supply normally Tie up the cables together in a bundle quite close to the 24 V AC to the controller and other connected equipment terminal blocks in order to limit movab
8. LPM 2251 OFL 4101 000 User Manual The LPM 2251 offers combined heating and domestic hot water control for hot water heating systems The radiator circuit is controlled according to an outdoor temperature compensated reset curve The domestic hot water is controlled by using a separate constant temperature controller LPM 2251 also has additional temperature sensor inputs for temperature measurement of radiator circulation radiator return hot water circulation cold water and one optional point LPM 2251 holds full heating funtionality including control loops curves time control alarm handling etc 7 ExtraSensor Simple symbols a clear LCD display and a minimum of buttons make it easy to operate the controller i e read and change values and parameters Start up and commisioning is simplified by the use of preprogrammed well proven application technique and factory settings 1 VY District Heating U4 Supply l l LHwsTemp l U1 HEX HWS 7 RadSuppl Outside I l ii HEX V B1 P1A Radiators B2 HWS PUMP i i l l l E Juz e N 9 l ColdWater l id i B3 j I od l B4 zb US m CW pum l i i I l l I I l I i l l l l District Heatng Return l in a EC eg Lb ad 4 4 266 n FUNCTION RADIATORCIRCUIT Damped outside temperature The purpose of the supply temperature control is to maintai
9. controlled towards the setpoint with a Pl regulator with adjustable P band l time and stroke time for the motorized valve The control loop has a ramp limitation which means that the maximum change rate of the control signal is adapted to the stroke time of the motorized valve The control signal cannot change faster than the actuator moves to avoid self oscillation The control loop has an adjustable dead zone used at low hot water flow to increase the control stability This means that a bigger control offset is allowed at low hot water flow before the control signal changes ALARM HANDLING Pump alarm Alarm is tripped if run indication from the pump in operation fails The alarm time delay is 15 sec Temperature alarm Radiator circuit Alarm is tripped when the differential between the supply setpoint and the supply measured value exceeds 10 C Time delay is 60 min OFL 4101 000 18 Sep 2002 Hot water services Alarm is tripped when the differential between the Hws setpoint and the Hws measured value exceeds 10 C Time delay 60 min Sum alarm The sum alarm output closes when there is a tripped alarm LPM 2251 3 12 TECHNICAL DATA Part number LPM 2251 Controller 0 ce ecccccceeeeeeceeeeeeeeeeeeeeeeeeeeeeeess 200 2153 000 User Manual cccccccccseeceeeeeseeeeseeeseeesaaees OFL 3998 000 Power supply 24 V AC 2096 50 60 Hz POW cimees Ujanjeio pP IRR EE E Om 3W
10. en commissioning the LPM 2251 controller Note any parameter changes in the Change column Confiuration switch 1 Outdoor sensor connected directly Outdoor sensor from other LPM 2000 off 2 Display returns to P 00 after 2 min Display stays where it is left ee 4 5 6 1 step control of Hws valve 2 step control of Hws valve 7 0 10 V output for Hws valve 2 10 V output for Hws valve 8 Normal operation Hardware reset P No Parameter Min __ Max Step Defaut Change Comments Poo Currentime 0000 25 59 000 o oo P01 Outdoor temperature 30 C 45 03 0 jStp 01at240 C 0 P02 Damped outdoortemp 30 soc one oo Tooo y o P03 Radiator supply temp o 120 lose Step 0 1at255 P04 Radiator circ temp O0 C 120 C lose Step 0 1at255 P05 Radiator return temp o 120 O3 C Step 0 1at255 P o6 Hot water temperature o 120 C O3 C Step 0 1 at 2 55 20 C jose Step 01at255 ose Step 01at255 a200 03 C Step 01at255 00 P10 Radiator supply setpoint o 120 ore o P11 Radiator Curve shit 40 40 C oie oc o 00 P12 RadCurve Night setback 40 C 400 o1 aoe 0 00000 1205 one Step 01at255C P 14 Week program heating 05n 06 22 feebelowiledbar daymode C P09 C Daytime operation heatin off on off on M m m omm ee
11. essing F or Confirm with L B The LPM 2251 is now in operation using the pre set para meters Testing inputs and outputs To test inputs and outputs read and set the parameters by using the operator panel Skip those tests which are not relevant to the installation P Procedure for testing inputs and outputs 1 Check that all temperatures are reasonable Follow the instructions in the quick reference Ensure that the controller is in the timed operation operating mode The quick reference contains a description of how to set the operating mode Activate input X1 extended daytime operation and check that the timer and the flashing sun appear in the display window Set the operating mode of the controller to manual control Check that all outputs are operational Control the outputs using P 88 P 94 Dimension Drawing 137 91 2 Change the time by pressing or Hold down the button for fast increase decrease Confirm with O9 3 Set the date by going to P 16 by pressing v 4 Change the date month day by pressing or Hold down the button for fast increase decrease Confirm with J a eras J 155 i 231 H E i 76 96 8 12 LPM 2251 OFL 4101 000 18 Sep 2002 PARAMETERS Commissioning protocol parameter listing This report form is to be used wh
12. ility e EN 61 010 or IEC 950 or other applicable safety The rail with three screws in the middle of the back is in standard for computers modems and other equipment sulated It can be used as measurement neutral A connection supplied by 230 V mains must then be made between the rail and measurement neutral M in the terminal block If equipment using 230 V mains is connected to a relay output terminal of the controller low voltage equipment connected to other relay terminals of the controller must then have at least basic insulation to all touchable parts OFL 4101 000 18 Sep 2002 LPM 2251 7 12 INSTALLATION Commissioning The following should be done before switching on the power 1 Check that sensors and actuators are connected correctly 2 Set the configuration switch Access to the configuration switch can be gained by pulling out the quick reference and removing the plastic sheet in front of it Switch no off on 1 Outdoor sensor Outdoor sensor from connected another controller 6 1 step domestic hot 2 step domestic hot water control water control 7 0 10 V output for 2 10 V output for domestic hot water domestic hot water Switch on the power to the controller and set the clock 1 Set the time Select parameter number P 15 by pressing v orla Press and 4 at the same time to get to P 15 P 99 5 Set the year by pressing Y to get to P 17 6 Change the year by pr
13. n the correct indoor temperature irrespective of changes in the outside temperature The thermal inertia and mass of the building shell mean that a rapid change in outside temperature takes a while to affect the room temperature To make effective use of the heat storage capacity of the building shell control is done according to a damped outside temperature The amount of damping is adjustable to suit all types of buildings This function prevents a cold effect when the outside temperature rises quickly and unnecessary additional heating during the usually cool evening hours before night setback OFL 4101 000 18 Sep 2002 Outside temp Time LPM 2251 1 12 FUNCTION RADIATORCIRCUIT Control curve The control curve for the supply temperature is based on three dimension points defined to three outside temperature points of which one is adjustable The curve can be shifted in parallel The supply temperature can be minimum and maximum limited The calculation of the control curve is based on damped outside temperature y C t supply 60 50 40 30 20 10 tout Night setback LPM 2251uses variable night setback to ensure that the heating system is able to restore the indoor temperature after night setback at low outside temperature The magnitude of the setback is a function of the damped outside temperature according to a curve that has two adjustable outdoor temperatures Night setback
14. oost time min AP 120 37 P 38 P 39 20 15 10 5 O 5 10 15 20 25 Damped Outdoor C Incr boost time P 40 Monday morning effect O 96 50 96 10 96 Hot water setpoint select Hot water setback off 1 I3 0 Hot water setback 30 50 C com 0 10 C C 0 off 30 C Switch level high low load 6 V 10 V 9 10 C 5 S 0 5 C S 120 C on 0 o C off E p c Se V n 1 3d 1 1 C P band Hot water contr 30s 200 C time Hot water contr 600 s 10s P 59 Deadzone low load Hot w os 10 C 5 P 60 Run time Hot water act 300s 15s Dead zone C N P59 Dead zone at low load Dead zone an at high load d P 56 0 Adjustable 100 10V switching level 0 2V OFL 4101 000 18 Sep 2002 LPM 2251 11 12 PARAMETERS P No Parameter Default Change mn Me Sep For Week progam ka 05h 00 00 see belowtiied bar day mode Daytime operation Hot w K4 MO TU WE TH FR SA SU off on off on P 62 Timer ext daytime op Oh 6h 1h Oh P63 Holidayperiod 1 qe Ji hi T Holiday period as P63 P 65 Holiday period as P63 Holiday period P 63 Start P 64 Stop P 65 24 h 3 Time format 12 24 hours 12 h 12 h 24h 67 Daylight saving time 7 1 Mar Sp 2 Mar Oct omm O 2 Pump stop auto heating O off P 73 Pump stop outd cut off C 50 9 j P 74 Pump
15. patibility EIS IO eessesestest E dose stuse tura udirees EN 50081 1 HNIC s PERRO EE EN 50082 1 Material sss ABS plastic CO DUE eee Seetcececozeetcctdanzadeneethnteatasecseacctee grey red transparent Weight T T 0 7 kg Overall dimensions WxHxD mm 144x96x96 A 96 paz 144 72 96 L zago o al LS n lt M e d 91 137 Dimensions in mm b Procedure for removing the backplate 1 Remove the metal brace by unscrewing the fastening device Press in the two round buttons on the sides of the controller Hold the buttons in while carefully pulling the electronic part out of the back Fastening device The controller can be mounted in three different ways Directly on a wall On a norm rail EN 500 22 TS 35 mm In a panel with or without a backplate 4 12 LPM 2251 Procedure for mounting controller on a norm rail EN 500 22 1 Place the backplate of the controller with the metal brace on the upper side of the rail arrow 1 2 Turn it downwards until it snaps onto the rail arrow 2 3 Press on the electronic part Secure the controller into the metal brace with the fastening device for panel mounting 4 To remove place a screwdriver in the lock on the bottom of the controller and pull down
16. round with the cable entry facing down If several LPM 2251 are to be used in the same building it may be sufficient to only install one outdoor temperature sensor Any controller which has no outdoor temperature sensor of its own can then receive outdoor sensor signals from the controller which has one Rad supply temperature sensor EGWS EGA The immersion sensor EGWS should be mounted in the supply pipe 0 5 1 m after the heat exchanger If a strapped on sensor EGA is used this should be mounted onto an un insulated part of the supply pipe Polish the line thoroughly so that the copper sensor plate makes good contact EGA should not be used on pipes where 2 50 mm 2 Hot water temperature sensor EGWS The immersion sensor EGWS should be mounted directly in the outlet from the heat exchanger for domestic hot water Actuators TAC Forta Assembly instructions are supplied with the actuators LPM 2251 5 12 OPERATOR PANEL Display window 24 hour Parameter Parameter time bar number value P 00 12 00 C F L D Operating modes The symbols have the following meaning C Heating off Continuous night setback Continuous daytime operation Q Timed operation SN Manual control Q Heat reduction during holiday period Extended daytime operation from external connection flashing sun O B How to use the buttons The controller has five buttons beneath the display window Enter
17. stop supply t cut off O C 1 it oo 3 P 75 Pump exercise heating 0 off 1 on 2h C h y N 1 on 20 C 20 C 1 yes 0 no NIO O BR 8s O SS o SS 1 1 yes 0 no P 76 Pump min off time heating O h 12 P 77 Adjustment outdoor sens 5 C 3 0 25 C 0 Damping const outd temp 0 h Oh 4 P 82 Alarm pump o 2 N CO 1 O no alarm 1 alarm P 83 Alarm supply temp 1 O no alarm 1 alarm P 84 Alarm hot water temp O no alarm 1 alarm p E o 8 ov Manual contr outdoor sens 0 V Man contr sumalarm K3 3 Man contr wkly prog2 K4 Man contr heating K5 K6 E NEM EMEN ca tot NENNEN NEN um oiv ai Co 10 V 0 1V 10 V ii a 1 D Co co O off 1 on O off 1 0n 1 1 1 1 1 O off 12on 1 O off 12on 1 1 close 1 open k k OS co ko c o AB rm I SS mE PEREN ene Ner LPM 2251 OFL 4101 000 18 Sep 2002
Download Pdf Manuals
Related Search