Siemens AGU2.522 Series User Manual Download

Page: 1 / 21

CC1J7215en
11.05.2011

Building Technologies Division

Industry Sector

Extra printed circuit board AGU2.522...

for boiler management units LMU74...

Mounting Instructions

The extra printed circuit board (extra PCB) prevents premature failure of the LMU74... caused by loss of
capacitance of a capacitor.

The AGU2.522 ... and this Mounting Instructions are intended for use by OEMs which integrate the extra PCB
in their products!

Summary of Contents for AGU2.522 Series

Page 1: ...2 for boiler management units LMU74 Mounting Instructions The extra printed circuit board extra PCB prevents premature failure of the LMU74 caused by loss of capacitance of a capacitor The AGU2 522 and this Mounting Instructions are intended for use by OEMs which integrate the extra PCB in their products ...

Page 2: ...2 21 Building Technologies Division Mounting Instructions AGU2 522 CC1J7215en HVAC Products Contents 11 05 2011 ...

Page 3: ... Typographical conventions 4 2 Summary 5 2 1 Target group of users 5 2 2 Supplementary documentation 5 3 Safety notes 6 3 1 Product liability 6 3 2 Mounting notes 6 3 3 Standards and certificates 7 3 4 Environmental compatibility 7 4 Technical data 8 5 Dimensions 9 6 Step by step mounting instructions 12 7 List of figures 21 ...

Page 4: ...aws your attention to other information contained in User Documentation chapters or sections Only qualified personnel are allowed to put the extra PCB into operation Qualified personnel in the context of the safety related notes contained in this Mounting Instruc tion are persons who are authorized to commission ground and tag devices systems and electrical circuits in compliance with established ...

Page 5: ... to facilitate mounting and to establish electrical contact with no need for plug ging screwing or soldering Housing to ensure protection and mechanical strength 2 1 Target group of users Heating engineers 2 2 Supplementary documentation Environmental Declaration AGU2 522 E7215 Environmental Declaration LMU74 LMU75 E7495 Extended User Manual OEM setting lists I7495 Extended User Manual OEM setting...

Page 6: ...nadver tently switched on again and that it is indeed dead If not disconnected there is a risk of electric shock Ensure protection against electric shock by providing adequate protection for the connection terminals Fall or shock can adversely affect the safety functions Such products must not be put into operation even if they do not exhibit any damage After any kind of activity mounting installa...

Page 7: ...ns Electrical safety chapters 12 2 and 20 2004 108 EG 90 396 EWG 2006 95 EG EN 61000 6 1 EN 61000 6 3 EN 60730 1 EN 60730 2 5 ISO 9001 2010 Cert 00739 ISO 14001 2010 Cert 38233 DIN EN 60335 1 WEEED ROHS Directive for Electronic Scrap Restriction of Hazardous Sub stances 3 4 Environmental compatibility The product contains electrical and electronic components and must not be disposed of together wi...

Page 8: ...73 8 mm x 8 3 mm Storage DIN EN 60721 3 1 Climatic conditions Class 1K2 Mechanical conditions Class 1M2 Temperature range 20 60 C Humidity 90 r h noncondensing Transport DIN EN 60721 3 2 Climatic conditions Class 2K2 Mechanical conditions Class 2M2 Temperature range 20 60 C Humidity 90 r h noncondensing Operation DIN EN 60721 3 3 Climatic conditions Class 3K3 Mechanical conditions Class 3M2 Temper...

Page 9: ...sion Mounting Instructions AGU2 522 CC1J7215en Industry Sector Dimensions 11 05 2011 5 Dimensions Dimensions in mm Plastic support AGU2 522 with extra PCB Dimensions in mm 7215m05 0511 Figure 1 Plastic support AGU2 522 with extra PCB ...

Page 10: ...10 21 Building Technologies Division Mounting Instructions AGU2 522 CC1J7215en Industry Sector Dimensions 11 05 2011 Extra PCB Dimensions in mm 7215m03e 0511 Zero point Figure 2 Extra PCB ...

Page 11: ...ion Mounting Instructions AGU2 522 CC1J7215en Industry Sector Dimensions 11 05 2011 Extra PCB assembled Dimensions in mm 7215m04e 0511 Solder fillet height max 1 5 mm The resistor must rest on the extra PCB Figure 3 Extra PCB assembled ...

Page 12: ...tep by step mounting instructions Warning Protective ESD measure To ensure ESD wear an ESD wrist strap Ö Note Further information Refer to Installation Instructions released by the boiler supplier e g WGB15 38C Check to ensure the boiler is equipped with an LMU74 Disconnect the boiler from power If the plant is not switched off there is a risk of electric shock Remove the boiler s front cover Figu...

Page 13: ...ndustry Sector Step by step mounting instructions 11 05 2011 Fold down the control section Figure 5 Control section folded down Remove cover from the control section Figure 6 Cover from control section removed Put on an ESD wrist strap Figure 7 ESD wrist strap Step 4 Step 5 Step 6 ...

Page 14: ... a clip to connect the ESD wrist strap to a boiler component with good electrical conductance and earth potential Figure 8 Connection of ESD wrist strap to the boiler Put on the ESD wrist strap ensuring contact with your skin Disconnect all cables from the LMU74 Remove the fuse Figure 9 Disconnection of cables and removal of fuse Step 7 Step 8 ...

Page 15: ...22 CC1J7215en Industry Sector Step by step mounting instructions 11 05 2011 Release the 5 snap fasteners Remove housing from the LMU74 Figure 10 Removal of housing Undo and remove the 7 fixing screws of the LMU74 1 2 4 5 6 7 3 Figure 11 7 fixing screws Step 9 Step 10 ...

Page 16: ...ng instructions 11 05 2011 Warning Protective ESD measure and protection against electric shock When removing the motherboard always hold it by the transformer Never touch the motherboard itself Remove motherboard from the housing Figure 12 Removal of motherboard Figure 13 Never touch the motherboard itself Step 11 ...

Page 17: ...ns 11 05 2011 Warning Risk of personal injury or substantial damage to property Keep motherboard in a safe place Motherboards that fell down must not be used again Put motherboard on plastic foam suited for ESD or store it in an ESD bag Figure 14 Motherboard placed on plastic foam suited for ESD or stored in an ESD bag Step 12 ...

Page 18: ...of personal injury or substantial damage to property Do not touch the 3 pins since they can cause injury Ensure that the 3 pins do not get damaged Damaged pins will not be detected when checking the boiler s functions Consequence Malfunctions might not be detected for some time Take an extra PCBs from the package Figure 15 Package with extra PCB Step 13 ...

Page 19: ...making certain that the holes are located above the studs The 3 pins must point upward Warning Risk of personal injury or substantial damage to property If not correctly located the extra PCB can damage the housing of the LMU74 Also in that case the extra PCB is not detected when checking the boiler s functions Consequence Malfunctions might not be detected for some time Figure 16 Fitting the extr...

Page 20: ...11 Reassembly Secure the LMU74 with the 7 screws Replace the housing of the LMU74 Housing must audibly click Reestablish and check all cable connections Take off the ESD wrist strap Replace the control section s cover Fold up the control section Replace the boiler s front cover Make the safety checks Put the boiler into operation Step 16 ...

Page 21: ...to the boiler 14 Figure 9 Disconnection of cables and removal of fuse 14 Figure 10 Removal of housing 15 Figure 11 7 fixing screws 15 Figure 12 Removal of motherboard 16 Figure 13 Never touch the motherboard itself 16 Figure 14 Motherboard placed on plastic foam suited for ESD or stored in an ESD bag 17 Figure 15 Package with extra PCB 18 Figure 16 Fitting the extra PCB 19 Figure 17 Replacement of...

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