Comdronic AC6, Operating Instructions Manual

Page 1: ...nt Range Accuracy 1 Contact Us 1 Description of AC6 2 Connection Procedure 3 Disconnection Procedure 3 Menu Map 4 Display Menu 5 Main Menu 8 Units Menu 11 Damping Menu 12 Advanced Menu 13 Quick Valve Storing Function 15 Appendices Glycol Water Specific Gravity Chart A1 Recommended User Maintenance Procedures A2 ...

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Page 3: ...acy of reading 1 of reading or 0 10 kPa whichever is greater 1 of reading or 0 20 kPa whichever is greater Max Allowable Static Pressure 10 bar 20 bar Measurement Range 0 5 kPa to 200 kPa 1 0 kPa to 600 kPa Factory calibration is carried out in controlled conditions using reference equipment which has been independently calibrated to UKAS standards Generally it is recommended that AC6 handsets are...

Page 4: ...connection tube to this connector Internal strainers protect the sensor unit from small dirt particles These are service parts Note blocked strainers will slow performance and reduce accuracy Equalising valve Press to cancel an entry or to return to a previous screen Also use to switch the AC6 OFF 2 9V Battery 1 x Alkaline 9V PP3 battery Battery access at rear Typical effective operating time up t...

Page 5: ... the low pressure downstream test point on the subject measuring valve device 5 Ensure that the equalising valve on the AC6 is OPEN 6 Attach the free ends of the RED and BLUE connection tubes to the colour coded connection points on the AC6 7 OPEN the isolating valves on the connection tubes to allow the line fluid to purge any air from inside the tubes 8 CLOSE the isolating valves on the connecti...

Page 6: ...keypad The default starting digit is always zero then use the buttons to change the value Use the button to add a digit and the button to remove a digit If a decimal point is required press the button when the zero digit is showing To enter a negative number press the ZERO button before any number is added The following example shows how a user would set a Design Flow of 1 05 MENU enters the Main ...

Page 7: ...hen a fixed orifice valve has been selected and fig 2 shows an example of displayed data when an automatic balancing valve has been selected Fig 1 5 Schematic of the selected valve Kvs of the selected valve Details of the selected valve Derived Flow Calculated by the AC6 using the measured Δp and the Kvs Measured Δp 5 30 Crane Fixed D931 15mm KPa l s 0 141 Kvs 2 20 ZERO DP SG TEMP HIGH This symbol...

Page 8: ... the new value 6 Current cartridge setting Flow status message Details of the selected valve Derived Flow Measured Δp 20 48 FlowCon Green Green 0 15 25mm KPa l s 0 210 FLOW OK l s 0 210 5 00 Design Flow for this valve at this setting Press the button to change valve setting Current handwheel setting Kvs of the selected valve at the current handwheel setting Derived Flow as a of the Target Flow If ...

Page 9: ...w Approx actual flow Design Flow for this valve at this setting Δp required to achieve Design Flow Current valve setting FlowCon Green Green 0 15 25mm LOW FLOW 0 210 l s 5 00 14 50 KPa 0 200 l s 16 00 1 50 Down arrow indicates that the Δp is unnecessarily high Measured Δp Difference between Measured Δp and Design Δp Flow status message Use the button to edit the Current Valve Setting not shown if ...

Page 10: ...valve database on their AC6 using latest data files which are available from Comdronic Please Contact Us for further information Note whilst every effort is made to ensure that stored valve data is correct valve manufacturers invariably reserve the right to modify their products without notice and so Comdronic cannot be held responsible for any inaccuracies or omissions Fig 8 Make selections for a...

Page 11: ...nce the new value is correct on the screen press the button to accept it Or press the button to exit the screen and retain the current setting Note while SG is set to a value other than 1 0 SG will show at the top of the chosen display screen as a reminder to the user that readings are being subjected to a correction It is strongly recommended that users regularly check that the set value for SG i...

Page 12: ...nerally required when carrying out advanced proportional balancing Typically the value used will be the same as the calculated Design Flow percentage on the index circuit Balancing to 100 target on subsequent valves will ensure that valves adjacent to the index valve are balanced Fig 12 Once the new value is correct on the screen press the button to accept it Or press the button to exit the screen...

Page 13: ...m3 m or m3 s Available velocity options are m s or f s Fig 15 11 2 2 Kvs Use the button to add a digit Current setting Enter New Kvs 2 3 Use the button to remove a digit Use the buttons to increase or decrease a value Pa x 0 000145 Conversion factor from pascals Select DP Unit 0 0 Decimal place format for the selected units Use the buttons to scroll through the available options Press to accept PS...

Page 14: ...h readings are averaged from a minimum value of 0 6 SEC to a maximum value of 11 0 SEC Increasing the Sample Time will make the screen appear to update less frequently but with a more stable reading Fig 17 Once the new value is correct on the screen press the button to accept it Or press the button to exit the screen and retain the current setting 12 Update Time 2 00 SEC Use the buttons for coarse...

Page 15: ...rking on an unstable system the displayed alert may change quite frequently between the HIGH LOW OK options and this may only serve to impede ratherthanassist the commissioning process Hence it is strongly recommended that Flow Alerts remain Disabled when work is being carried out on an unstable system or on a system that has little regulation Default 5 min The Backlight Timer sets the period of t...

Page 16: ...elected in the Units Menu A valve will need to be selected see page 8 in order for this feature to be used Fig 22 Once the new value is correct on the screen press the button to accept it Or press the button to exit the screen and retain the current setting 14 Select Auto Off Time 5 min Use the buttons to move between the settings Press to accept 10 min 1 min Always On View Size As mm Use the butt...

Page 17: ...hown below Note even when a user is within the Quick Valve screens the AC6 will be continuing to take readings even if the AC6 is not connected to a system it will still be taking a reading and it may have a valve selected or a manual Kvs entered Also values for Target Flow and or Design Flow may have been entered For the purposes of this section this data will be referred to as the Live Data Exam...

Page 18: ...ssioning process Then upon return to the office the saved data can be transferred from the AC6 to the computer for the purposes of creating commissioning reports Please Contact Us for further information Group 6 Valve 9 TO EXIT Δp and Flow from the Live Data 5 30 KPa MENU 0 256 l s Use the buttons to select a Group No Use the buttons to select a Valve No Currently selected Group No Valve No Group ...

Page 19: ...1 057 1 067 1 077 1 084 1 090 40 0 990 1 004 1 018 1 029 1 042 1 054 1 064 1 074 1 085 1 091 1 098 30 0 996 1 007 1 022 1 034 1 047 1 059 1 070 1 080 1 092 1 099 1 105 20 0 999 1 010 1 026 1 038 1 052 1 065 1 076 1 088 1 099 1 106 1 114 10 1 000 1 013 1 028 1 042 1 056 1 070 1 082 1 094 1 105 1 113 1 120 0 1 000 1 015 1 029 1 045 1 061 1 075 1 088 1 100 1 112 1 120 1 128 10 1 048 1 065 1 079 1 092...

Page 20: ... first 3 Whilst keeping the AC6 upside down disconnect the water supply from the Blue connector and reattach it to the Red connector and allow water to flow out of the Blue connector This is the forward flush In addition to performing simple flushes if the AC6 is regularly used on extremely dirty systems it may also be necessary to periodically perform an advanced flush An advanced flush is the sa...

Page 21: ...rtight and don t forget the O rings Spare set of strainers 8 5mm bit for strainer removal and re fitting Gently unscrew the male connectors from the strainer housings IMPORTANT Take care not to disturb i e move the strainer housings If a male connector doesn t readily unscrew use a 14mm wrench to hold the strainer housing in place before any additional force is applied Retain O rings for later rea...

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