Building Automation Knowledge Base

Issue Status does not change. Environment CT current transformer H909HV-S6 Cause Although current flow is present, the current transformer status does not change. Resolution This issue was caused by the incorrect wiring between the Current Transformer and the DDC controller. To clarify this, please see below. The drawing shown as part of the installation instructions appears to show that four connections to the DDC controller are required, this is not connect, only two are required. The status output connections consist of two terminal sets, but only one connection is required from each. To download the H909HV-S6 datasheet please click HERE.

Issue How is a CSMC controller "Fast Run" enabled / disabled? Environment Satchwell CSMC Fast Run Cause Controller is in fast run mode, how is it returned to normal? Resolution The "Fast Run" mode is enabled / disabled as explained below. This action required the use of the service code 0280.     To view the complete user guide, please click HERE.

Issue What actuators are available? Environment VG210R VG310R Actuators Cause Choice of available actuators. Resolution Suitable Actuators for the VG210R and VG310R ball valves ranges are; Direct fit. MG600C, MG600C SR   With AV-823 Long Stem adaptor. M400 M800 M1500 MG900 SR To view the following data sheets, please select the data sheet required. VG210R,  VG310R, MG600C,  MG600C Installation,  MG600C SR,  MG600C SR Installation and Manual Override instructions

Issue Fixing MD actuators to a damper. Environment MD10 MD20 Damper Accessories Cause How is the actuator fitted to the damper? Resolution To attach the MD actuator to the damper, it is clamped to the damper shaft, and the anti-rotation bracket (supplied with the damper) is fitted. The following range of damper accessories are available.   To review the accessories, please click HERE. To review the MD datasheets, please click on the appropriate MD. MD10A-24, MD10B-24 (230), MD20A-24, MD20B-24 (230)

Issue Replacement actuator for the STL-SR valve Product Line Field Devices Environment STL-SR Cause Replacement actuator for a STL-SR valve Resolution A M800 actuator or MV15B-24 or MV15B-230 actuator can be used to replace the actuator on the STL-SR valve series. Click here for the STL-SR datasheet. Notes: The original actuator e.g. M5CP, may have had a potentiometer fitted to provide position feedback to the controller. There is no direct replacement, the controller, actuator and valve may have to be changed. As a workaround, The M800 provides a 2-10V feedback, using a signal conditioner this could be converted to a resistive feedback. The original actuator may have had end switches fitted, order end switches to suit the replacement actuator. The M800 when used in floating control mode (dip switch 2= On) requires 4 wires. The original actuator used 3 wires to provide floating control.

Issue Data sheet and CE certificate for the TCL Freeze Thermostat required. Environment TCL Freeze Thermostat Cause The requirement for a copy of either the data sheet Mli or CE certificate. Resolution Click here to be linked to the TCL data sheet. Click here to be linked to the TCL MLi. Click here to be linked to the TCL1601 MLi Click here to be linked to the TCL CE certificate. Click here to download all four documents as a zipped archive.

Issue Is the VF208W certified according to the UK WRAS? Environment VF208W Cause In some applications, as for drinking water in hospitals, the WRAS certificate is requested.  Resolution The VF208W is not certified according to the UK WRc ( WRAS ) but to the German equivalent, KTGW / DVGW. KTGW / DVGW certificate is available for download here. 

Issue Connecting an ARA 659 Esbe actuator to a Satchwell  CZT 5305 controller. Environment Esbe ARA 659 ARA 600 Series Wiring Cause Confirmation of the actuator wiring connections to the controller. Resolution The actuator is connected as follows; CZT 5305 - Esbe ARA 659 actuator. Terminal 36/37 - 24 volts (Brown wire). Terminal 35 - 0 volts (Blue wire). Terminal 19 - 0-10 volt (Black wire).- Heating actuator. Terminal 20 - 0-10 volt (Black wire).- Cooling actuator. To review the CZT 5305 datasheet please click HERE. To review the ARA 600 series datasheet please click HERE.

Issue How can I change the rotation direction of the MD20B actuator? Environment MD20B-230 8751021000   MD20B-24 8751025000 Cause Some applications require a different rotation direction than as default when delivered. Resolution Direction of rotation is reversible, using a switch. See data sheet here for details.

Issue Is a Satchwell DWT0002 sensor fitted directly into the waterway? Environment DWT 0002 Sensor Fast Response Cause Customer has to replace this sensor and is not sure how to remove it. Resolution The DWT0002 sensor provides a fast response to temperature changes, and is fitted directly into the pipework. Important Note; When changing this sensor, the water must be isolated and drained from this part of the system. To review the data sheet, please click HERE.

Issue Replacing VEX, MEX, FEX valves and AVX, AVM actuators Environment Thermic Valves Cause The valve and / or actuator requires replacement. Resolution The AVX and AVM are a 2 wire thermic valve actuator, its stroke length is 2.5mm short stroke. The valve actuator fitting is an industry standard 30mm x 1.5mm thread. To replace the valve use the VZ208 (2 port), VZ308 (3 port), VZ408 (4 port). To replace the actuator use either the MZ140-24T (24Vac) or the MZ140-230T (230Vac). Download the VEX, MEX, FEX, AVX, AVM datasheet here. Download the VZ208, VZ308, VZ408, MZ140 datasheet here.

Issue Availability of SLC-82XX and SLC-83XX Environment Site with Single Loop Proportional Temperature Controller with Sensor Cause Obsolescence of the SLC-82XX and SLC-83XX Resolution The SLC-82xx and/or SLC-83xx are obsolete. These are old analog technology controllers which have been obsolete since January 01, 2011 There is no replacement for these items. The only suggestion would be to do a complete re-control with digital equipment. To do this one of Schneider Electric's Partners would need to visit the site to see what is needed to control the space. This would require new controllers, thermostats, actuators and other items. Since it is such a major re-control we do not have a single solution that will allow you to use some of the older equipment. Contact your Regional Manager in your area to provide a contact for the site upgrade.  The manual for the SLC-82xx and SLC-83xx is available here.

Issue The customer is replacing a defective actuator on a hot water reheat valve downstream of a VAV box.  The VAV and associated hot water valve are controlled by a DMS MicroSmart MSC-V-511 controller. Can the MF41-6043 actuator be wired into the MSC-V-511 and control the valve? Environment DMS MSC-V-511 MF41-6043 Cause Defective actuator is discontinued and cannot be swapped with an identical, working one. Resolution The triac outputs on the MSC-V-511 can properly control the MF41-6043 actuator. Terminals D1 to D4 provide 24 Vac which is the voltage required for the actuator. Look at the MSC-V-511 installation guide (F-25710) on page 18 for details on how to wire and program the actuator. Remember that the MSC-V-511 provides 24 Vac power so there's no need for an external power source.   If needed, the MF41-6043 installation guide has wiring diagrams on page 6. The actuator requires 2.3 VA. The digital outputs on the MSC-V-511 can provide up to 12 VA.

Issue  AMH2451 replacement is required.. Environment AMH2451 Satchwell Cause The AMH2451 is obsolete. Resolution The replacement Schneider Electric actuator will be the MV15B-230 with a L7SV - the combined order code is 880-0660-000. To review the data sheet for the MV15B, please click HERE. To review the data sheet for the AMH2451, please click HERE. To review the data sheet for the VZF1954, please click HERE.

Issue A replacement gland kit for a Satchwell 9.5mm valve spindle is required. Environment Satchwell Gland Kit 9.5mm spindle Cause Customer cannot identify the valve, but has accurately measured the spindle. Resolution A 9.5mm spindle was used on the VZF/MZF 65mm-150mm valve ranges, therefore the gland kit is the 626-9-311. To review the VZF data sheet please click HERE. To review the MZF data sheet please click HERE.

Issue The pressure drop across the valve is required. Environment Valve Pressure Drop Cause Customer needs to know what the pressure drop across a 32mm valve will be. Resolution Example: two 32mm V211T valves with flows of 0.549 l/s and 0.483 l/s through them. To calculate the pressure drop use this formula - Pressure drop = (Flow rate in M3/Hr / KVs) squared. Flow rate of 0.549 l/s 32mm V211T has a KV of 16 Converting flow to M3/Hr - 0.549 * 3.6 = 1.9764 Pressure Drop = 1.9764 / 16 = 0.123525 squared = 0.015258 Bar * 100 = 1.526 kPa Flow rate of 0.483 l/s 32mm V211T has a KV of 16 Converting flow to M3/Hr - 0.483 * 3.6 = 1.7388 Pressure Drop = 1.7388 / 16 = 0.108675 squared = 0.0118102 Bar * 100 = 1.181 kPa To review the Satchwell Valve sizing data sheet, please click HERE.

Issue Unreliable documentation Environment Butterfly valve Cause Replacement Resolution The MF20 / MF40 actuator data sheets are supposed to be updated in regards to the use on old TRV-S valves.   Basically the standard MF40 fits to the TRV-S DN150-200, but the unique MF20-R fits to everything else.   So you need to know the valve.   No other adaptors are required. Click here for data sheet

Issue Which actuators are suitable for VG311F? Environment VG311F Venta Forta M700 MG900SR M800 M1500 MV15B M3000 Cause Which actuator to choose for MV15B Resolution The following actuators are, depending on application requirements, suitable for use with the VG311F valve: M700, MG900SR, M800, M1500, MV15B, M3000 For more information on the valve / actuator selection, please see the valve data sheet here. For more details on each actuators, please see their data sheets respectively. They are available for download from the Extranet or public website.

Issue Which models of the SE7300 series room controllers can be used with the SC3000 series relay packs? Product Line EcoStruxure Building Expert, EcoStruxure Building Operation, Field Devices Environment SE7300 series Room Controllers Cause The SC3000 series relay packs allows existing line voltage wiring between the fan coil unit and temperature controller to be re-used. Only certain models of the SE7000 series room controllers can be used with the relay packs.  Resolution The SER7300 is used with the SC3000. Refer to F-27797 SER7300 and SC3000 Series datasheet. Refer to the F-27777 SC3000 Series datasheet to select the appropriate relay pack for your application.  SE7000 series Room Controllers documentation can be found on The Exchange Download Center.   

Issue Replacing a 230 volt Satchwell mains actuator. Environment Satchwell MZxxx Valve Mains Actuator Cause Old Satchwell actuator is obsolete. Resolution The replacement mains actuator will be the MV15B-230 spec - 880-0460-000 for datasheet please click HERE. To fit the MV15B-230 actuator to a Satchwell MZxxx valve a L7SV linkage is required. spec 880-0126-000