Building Automation Knowledge Base

Issue Can BAS 2800+ parts still be obtained? Environment BAS BAS2800+ BAS 2800+ NIU Outstations Cause BAS 2800+ NIU has failed. Resolution Below is an extract of the discontinuation document, for the full document select HERE. In order to provide you with the opportunity to purchase any spare products for sites that may still be running the BAS Platform, the intention is to provide a 3 month window to place orders for BAS products that are currently still available. Because these products are in limited supply we cannot guarantee availability for all orders placed for the 3 month period between 1st May 2011 and the 31st July 2011. We will do our best to supply all parts that have been ordered during this period; and intend to keep manufacturing the product up to the end of October to enable us to meet any outstanding orders. This means that orders for the product can be placed up to the 31st July 2011 but no product will be manufactured after the end of October 2011.

Issue Modbus device integration to I/A Series R2 requires encode and decode of integer type registers to bytes. In this particular case, the Modbus device is a Patterson-Kelly ENVI boiler where the HIGH byte and LOW byte of a standard Modbus integer represent individual values.  However, the solution can be applied to other devices as required. Environment I/A Series R2, Modbus Cause Application - integration of Modbus into I/A Series R2 Resolution The attached R2 program objects can be used to encode or decode values as required. ModbusIntToBytes - Program will take the input integer value and decode to individual byte values as float status type values. ModbusBytesToInt - Program will take individual float status type values and encode bytes to a Modbus integer. Download ModbusIntBytePgms zip file ...

Issue Temperature Sensor Location Valve Location Actuator Location Product Line Field Devices Environment Actuator Sensor Valve Cause Where to fit and locate field devices. Resolution Valves: If the valve is lift and lay type and the application is diverting, then the valve must be fitted in the return. If the valve is lift and lay type and the application is mixing, then the valve must be fitted in the flow. The rule of thumb for lift and lay valves is "2 ins and 1 out" Rotary (shoe) valves can be fitted in either the flow or return for either mixing or diverting applications. Use pipe unions, so that the valve can easily be removed. Actuators on Valves: If the heating medium is steam then the actuator/valve arrangement is not fitted vertically, tilt the valve/actuator to an angle so that heat can convect away vertically and the actuator is not subjected to as much heat. In all cases, do not fit the actuator/valve arrangement so that the actuator is vertically under the valve. If the valve leaks, it will damage the actuator. Temperature Sensor location, in both wet and air applications the sensor need to sense correctly the medium it is in. Where possible install in a location for easier maintenance e.g. at a height reachable from a fixed floor level. Pipe Temperature Sensors: The tip of the sensor needs to be in the core of the medium i.e. the centre. The sensor needs to be fitted where stratification does not take place or is reduced. This can be achieved by fitting after a pump or after a bend where turbulence provides a good mix. If the sensor is fitted on a bend, then the probe faces the flow of/oncoming water. In CHW applications, fit the pocket just off horizontal, so that any condensation forming in the pocket can drain away. Adequate insulation will prevent condensation forming in the pocket. If fitting vertically in the top of the pipe is unavoidable see Oil for the DWT0001 (or STP660) pocket sensor to prevent problems with condensation. Duct Temperature Sensor: Supply Air - If a probe type sensor is fitted, it needs to be ideally 3 meters downstream and in the centre of the duct from the supply fan and preferably after a bend fitted with turning vanes. Return Air - The temperature sensor needs to be fitted before/upstream of the extract fan. Frost Coils - Temperature sensor, due to the short distance available, probe sensors are difficult to locate, but try to be as far away from the coil e.g. on the other side of the pre-filter bank and in the centre of the duct/AHU. Even better is to use an averaging type temperature sensor. Frost Coils - Fan Hold Off thermostat. Allow sufficient capillary to cover the battery surface. Lace the capillary across the frost battery on the downstream side using the correct clips. If the thermostat body needs to be fitted on the external side of the AHU, then fit with the minimum of capillary on the external of the AHU. Use a grommet or stuffing gland to protect the capillary as it goes through the AHU skin. If the AHU is fitted outside or is in an unheated space then the thermostat needs to fitted internal to the AHU. Do not cut the capillary if it is too long. Tidy capillary ends so they do not flap in the airstream. Outside Temperature Sensor: Outside temperature sensors should be located correctly to the local region you are in and the application they are serving i.e. compensated outside sensor in the UK are fitted on a wall facing north. The sensor should not be fitted on flues, chimneys, near opening windows. They should not be fitted near to compounds containing plant expelling heat e.g. chiller compounds. The sensor should be fitted at a height that does not require the use of steps or ladders for maintenance. Room Temperature Sensor: Sensors should be fitted at an agreed height and not fitted on external walls, near opening windows and doors or above radiators. They need to be exposed to the area they are controlling and not be directly influenced by heat sources e.g. computers. Sensors with exposed setpoint adjust or controls need to be fitted at a lower height so that people with disabilities can adjust them. Sensors that are fitted onto partitioned walls or have a conduit need the hole plugging so that there are no draughts. Sensors that are fitted directly to concrete or steel beams should be packed out with a thermal insulating material. Valves and Sensor Wiring: Allow sufficient cable to allow removal of actuator or sensor without having to disconnect the device. See the full Building Controls Group - Control Sensor Installation guide.

Issue Example Menta Programming using a STR as Setpoint adjustment to an Xenta I/O Module Environment Adjustable 10k Thermostats Menta STR-102 STR-103 STR-104 STR-105 STR-106 STR-107 STR-201 STR-202 STR-203 Cause Interfacing a STR to Xenta I/O Resolution Program an Analog Input to a Universal Input of an I/O Module Click on the HFB above to download this .MTA file.   The Expression Block is taking the hard coded -9 to 9 input and making it adjustable from the front end.   In simulation with a Calibrated Range of 5 the following setpoint results are produced: Analog In -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 Setpoint -2.5 -2.2 -1.9 -1.6 -1.3 -1.1 -0.8 -0.5 -0.2 0 0.2 0.5 0.8 1.1 1.3 1.6 1.9 2.2 2.5 Note: This example is for a non-linear input, with a setpoint adjust of +/-9. For a metric calculation, use a setpoint adjust of +/-5  and change the calculation in the expression block to A*B/10.  

Issue When running TAC Vista in a Network environment, there are several ways of setting up the license system. Sometimes, TAC Vista nodes (Vista users) "steal" license modules for each other. Environment Vista in network Flexnet license Cause When various TAC Vista systems are pointed to the same license server, one server can take or "steal" e.g. an OPC Client license which another server should use. Resolution For a complete explanation about the license system and how to setup the system and control licenses, refer to this video. A useful tool to use is the Options file, with the .opt file extension. Located in the License files folder, its easily monitored in a text editor, and could be used for Reserving or Excluding license modules for other TAC Vista nodes. Other features available for the Options file can be found in the Flexnet Licensing End User Guide. 1: Make a file called taclic.opt and place it in the same directory as the license files. 2: Edit the file with notepad and make the reservations you need. The syntax for each line in the file is "command amount feature HOST host". The feature names can be seen in the license files. Here is an example on how to reserve an OPC Client license for a PC called "BMS_SERVER_1" RESERVE 1 Vista.Server.OPCClient HOST BMS_SERVER_1 3: Restart the license server.

Issue It is not possible to bind a point in a Function Block program to the RelinquishDefault property of a BACnet Multistate value in an SE8000 controller. Product Line EcoStruxure Building Operation Environment StruxureWare Building Operation(SBO) 1.6.1 SE-8000 series Room Controller Cause In some circumstances the user may wish to change the value from both the HMI in SE8000 and from a Function block program in SBO, and in this case the RelinquishDefault property must be used. Resolution A possible workaround is to use a LUA script in the SE8000 controller. Idea 1: Write a LUA script that will check if the Priority array (ex. priority 16) value has changed for the list of points that the user wants to modify. If there is an entry in the Priority array, have the LUA script copy that value to Relinquish_default, then relinquish the corresponding priority array entry. Idea 2: There are 6 LUA "scratchpad" BACnet AVs that the user can write too. When the LUA script sees a change in those AVs, it can copy the value to a specific AV's relinquish default. For example, scratchpad AV25 can be used to "shadow" a setpoint. So when AV25 changes, the LUA script will copy the present value of AV25 into the Relinquish_default of whatever the Setpoint's AV is. Example of the LUA script in the SE8000 controller for the above: If value AV25 is bigger than 0, the value of AV25 is written on AV39 Relinquish_default property (priority17) and then AV25 is set to 0. if ME.AV25 > 0 then ME.AV39_Present_Value[17] = (ME.AV25/10); end ME.AV25 = 0 LUA programming guide for SE8000 Room controllers

Issue What are CZT, CXT, CXR Controllers? Why are CZT, CXT, CXR Controllers used? What is Proportional, Integral Action and Derivative control. Why does a controller deliver different pulse lengths to the valve and not drive it fully open or closed? What is Pb, IA, PID? Environment CZT CXT CXR DC1100 DC1400 Proportional, Integral Action, Derivative, Pb, IA, PID Cause What do these controllers do and what are their applications? What is Proportional, Integral Action and Derivative control. Why does a controller deliver different pulse lengths to the valve and not drive it fully open or closed? What is Pb, IA, PID? Why is a 0-10V Signal used? Why is a 3 point control / Open Closed actuator used? Resolution Proportional Controllers are used in applications where there are long time lags e.g. room control, return air control, storage calorifier (HWS). Where the controlling sensor is a medium to long distance from the heat/cooling source. An example of a proportional controller is the Satchwell CZT. Integral action controllers are used in applications where there are short time lags e.g. supply air control, frost coil control, non-storage calorifiers. Where the controlling sensor is a short distance from the heat/cooling source. An example of a integral controller is the Satchwell CXT or the CXR. The CXR is a controller where the supply air is controlled, but the setpoint is reset by the return air or space temperature, therefore the time lag is short. Other controllers that fall into this category are the DC1100, DC1400 again the controlling sensor (mixed flow temp) is located a short distance from the heat source.  The term proportional band (Pb) is where the valve is moved to a position proportional to the deviation from setpoint. 0-10V modulating actuators are generally used on these controllers. The term integral action (Ia) is where the valve is moved at a rate according to the deviation from setpoint i.e. the valve is given longer pulses the further away from setpoint, shorter pulses as it gets closer. 3 point control/pulsed pair/open-close actuators are generally used on these controllers. Further to proportional controllers, inherent offset (the setpoint is never quite reached) can be an issue. Integral action can be applied to remove this offset. These controllers are primarily proportional, but integral action can be found on them and is applied. Hence the term PI or PI controller. Derivative control is generally only found on BMS controllers and is used occasionally with PI control, hence the term PID. Here the derivative action moves the valve proportionally to the change from setpoint. It is complex and is rarely used. Further detail about CSC controllers can be found here. Further detail about CXT controllers can be found here. Further detail about CXR controllers can be found here. Further detail about CZT controllers can be found here. Further detail about DC1100 and DC1400 controllers can be found here.

Issue How to set the Network 8000 MicroZone II (MZ2) back to its factory-default settings? Environment Network 8000 MicroZone II (MZ2) Cause Need to set the Network 8000 MicroZone II (MZ2) back to its factory-default settings Resolution See Technical Bulletin 95-08 for a detailed procedure. Revised 12/22/2011

Issue Cannot see third-party LON devices when using the I/A Series Lon Device Manager to find and learn the devices on the LON Network.  The third party devices are known to be defined with a specific Lonworks Domain address. When using the I/A Series R2 (Niagara) WorkPlace Pro to commission LON controllers with specific a Lonworks Domain address, configure the Local LON device to match the Domain Length, Domain ID, and Subnet ID programmed in the third-party device. Environment I/A Series R2 (Niagara) WorkPlace Pro UNC 520 Third party LON controllers Cause When a third-party network management tool is used to define and configure / commission a LON network, the commissioning tool frequently uses specified domain address instead of the default "zero-length" domain address.  When using the I/A Series (Niagara) R2 WorkPlace Pro to learn a previously commissioned network, Workplace Pro will not be able to discover the LON devices until it has been configured to match the domain address of the network. Resolution Perform the following steps using WorkPlace Pro to configure the LON interface of the UNC and to learn the LON network. Open the Netmgmt page for the Local Lon Device then set the domain length and domainId to match the domain address of the device.  Apply the changes.  (See example here). Open the Properties page for the LocalLonDevice and select the Engineering tab.  Set the subnetId to match the subnet address of the devices.  (See example here). Recommission the Local Lon Device. Use the Lonworks Device Manager to find and learn the devices on the LON network.

Issue A McQuay MicroTech 2000 water source heat pump controller may be addressed as a Level 3 device under an MCG (MicroTech Communications Gateway). This can be confusing when addressing WSHP1 blocks in a SIM-MTECH. Environment Network 8000 SIM-MTECH McQuay  MCG (MicroTech Communications Gateway) McQuay MicroTech 2000 water source heat pump controllers Cause The MCG needs to use an Echelon communications protocol with the water source heat pump  (WSHP)controllers, which uses level 2 internally, and puts the WSHP controllers at LEVEL 3 Resolution The way to address the WSHP blocks under the MCG is HBYTE = 1, LBYTE = x, where x is the address of the controller.  Unlike earlier McQuay controllers where the unit address is set by rotary hexadecimal switches, the addresses of the MicroTech 2000 heat pump controllers are set in software by the McQuay  technician who commissions their network. Click here to see an excerpt from F-26133, Systems Integration Module- MicroTech, SIM-MTECH. See Fig 2.1, and Table 2.1, pp 2-2 through 2-4

Issue When ordering an I/A Series R2 (Niagara) UNC-520-2, is web browser support included? Environment UNC-520-2 UNC-520-WEB Cause UNC-520-WEB is a separately purchased upgrade. Resolution No, it is not included. Order the UNC-520-WEB upgrade in order to add web browser support to the UNC-520-2. See the Specifications Data sheet, "Models", page 3.

Issue How to configure a Pinpoint button to open a PDF file. Environment CyberStation Cause How does one open a PDF from Pinpoint? Resolution Use an active button control. See attached screenshot for an example of launching the file c:\3.pdf with Adobe Reader X

Issue Replacement controller for the KMC 3201. Product Line Field Devices Environment KMC 3201 application 4 Cause The KMC 3201 is no longer available. Resolution The KMC 3201 is a multi-application configurable controller, and this article only deals with replacing a controller running application 4, Two stage temperature control. For the KMC data sheet please click HERE. The replacement for the KMC 2301 using application 4, is the CZT5305, click HERE for the data sheet. Please note this is not a like for like change, installation and wiring changes will be necessary.

Issue Access Control power supplies in UK are not available globally. Product Line Andover Continuum Environment Continuum ACX57 CX9702 PSU Power supply Continuum enclosures Cause Power supplies for access control systems (for powering of door locks/maglocks etc) should be purchased locally. Resolution All of the globally available enclosures are detailed in the Enclosure Family Datasheet. This includes ones suitable for Netcontrollers, ACX's, bCX's, i2 and VAV controllers. Power supplies for access control systems (for powering of door locks/maglocks etc) should be purchased locally to suit the site applications. Product Support Services does not keep records of the equipment that may have been purchased locally. e.g. in the UK a company called Dantech is used for Enclosures and power supplies, please contact them directly if PSU connection details are required. Dantech electronic engineering 3 Galliford Road Industrial Estate Heybridge Maldon Essex CM9 4XD Tel: +44(0)1621856850 NOTE: The Dantech PSUs often include FR contacts (Fire Relay) that need to be powered by 12Vdc to enable the supply.

Issue What NEMA or IP rating is a specific product? Environment All devices Cause Is a product protected against water and access by foreign objects? Resolution The Degrees Of Protection document details both the IP rating and NEMA Enclosure charts. The IP rating is made up of 2 digits, the first is the level of protection to foreign objects, the second is the level of protection to water. If a product does not specify any rating for water ingress in it's datasheet then the the second digit will be 0. The first digit relates to the size of a foreign object that can be inserted into the product. Typically many Buildings products will not allow the insertion of a finger (12.5mm approx' 1/2") and offer no water protection, so they would be rated as IP20, however it would be IP10 should they have holes of up to 50mm (approx' 2").

Issue EL100DatabaseSetup.exe fails to execute correctly and will not build the EasyLobby database on the SQL server   Product Line Andover Continuum Environment SQL 2005 and SQL 2008 – All versions  Cause EasyLobby database creation via the .exe will not complete successfully due to a pathing issue with database file locations. Resolution Run the SQL script that is attached to this article via SQL Management tool. Make sure to double check the two lines near the top of the SQL script that specify the exact filepath(s) where the .mdf and .ldf files are to be created, as that could be unique on any given SQL Server. dbCreateSQLServer.zip Easy Lobby is available as a downloadable .doc: EasyLobby Schneider Electric Solution Guide. For all the add on products for Continuum, please visit this Exchange Extranet. For assistance with Add-On products, email COE.Support@buildings.schneider-electric.com Other add on software is Elevator Control, Reporting Modules for Continuum, Photo Album & Badge Printing App, Automatic Extended Log Archiver, Personnel Data Importer, Area Purge, Video Monitor, and Time Tracker. These products are available for a fee. PSS does not have pricing or availability for the programs. This can be found by contacting your sales representative for your region. Pricing is per machine rather than a site. Time Tracker for example,requires a software license and utilizes a software key, which is connected to the workstation’s printer port or USB dongle. A cookie is sent directly from the factory which updates the dongle used by the computer. Emailed instructions come with the cookie explaining how to install. Again, contact your sales representative to purchase a software license, software key, and activation code. EasyLobby Support: EasyLobby directly supports their software as well as the integration to Continuum. Please forward all EasyLobby support requests directly to them. support@easylobby.com (US) 001-781-455-8558  

Issue Using a VPN with I/A Series Niagara Systems Product Line TAC IA Series Environment I/A Series Systems Cause A VPN's purpose is to provide a secure and reliable private connection between computer networks over an existing public network, typically the Internet. Resolution What is a VPN? "Virtual Private Network" or VPN is a mechanism to extend a private network across a public network such as the Internet. A VPN creates a point-to-point connection or "tunnel" across the Internet between two computers. The tunnel encrypts the data between VPN endpoints, preventing data from being deciphered without the required encryption keys. Why use a VPN? VPN provides an additional layer of security to your Niagara system without compromising your ability to access Niagara. A VPN can help protect your Niagara system from Internet-based attacks by requiring an additional layer of authentication to access Niagara resources. It can prevent automated Internet port scan tools from detecting the Niagara system. How can I set up a VPN? The following document describes how to use an Internet Security Gateway to provide VPN access to your ENC/JACE.  Click on the link to download Using a VPN with Niagara Systems for more details. In addition, the document describes setting up a VPN using a ZyWALL gateway.  The ZyWALL USG-20 unified security gateway (from ZyXEL) is a cost-effective device that you can add to an existing installation to provide VPN server capability. IMPORTANT NOTE: The information in this document is based on the assumption that the only IP devices on the network are Niagara devices. If Niagara devices share a network with other devices (such as a corporate LAN), DO NOT follow the approach described in the following pages. Instead, work with the customer’s IT department to determine the best method to protect both the Niagara and corporate systems while providing required access to the Niagara systems. In any scenario, if the VPN is installed or configured improperly, you can expose devices to the public Internet. If you are unsure about how to best configure and test your configuration, please consult an IT expert. Frequently Asked Questions I already use SSL, do I still need to use a VPN? The use of a VPN is still recommended as an additional layer of security. Attacks can come from both inside and outside of your network. Once I set up a VPN, do I still need to use SSL? Yes. The VPN only provides encryption between the VPN endpoints – the VPN client and server. Traffic from the VPN endpoint to and from the Niagara Station is not encrypted unless SSL is used. I’m running AX 3.6 or earlier without SSL support – should I still install a VPN? Yes. The VPN still helps protect against Internet-based attacks on your system. Do I still need a firewall? Yes. You should set up firewall rules to restrict Internet access to the VPN server port only. You should also consider setting up rules with the VPN server to restrict VPN access to only the required IP addresses and ports. For example, there may be non-Niagara devices on the LAN, but the VPN should be configured to only allow access to the Niagara systems. Additionally, you should only allow access to required Niagara services. Will a VPN affect LAN access to ENC/JACEs? No. LAN access to the Niagara devices remains the same as always. VPN only affects the ability to reach Niagara devices from external networks such as the Internet. If I use a VPN, will Niagara HTTP, Fox, and Platform tunneling work? Tunneling works normally over a VPN. You will need to update IP address assignments. What is the impact of VPN on Niagara Networking? Niagara Networking between systems on the LAN still functions the same whether or not there is a VPN installed. When I connect to a VPN, do I lose all other network connectivity? While your VPN client is connected to the remote VPN network, your Workbench (client) PC will have a new "Default Gateway" to allow you to make connections to stations on the VPN network. Typically, this happens without your knowledge and is mostly transparent. The change is undone after disconnecting from the VPN, and re-done when you reconnect. However (while you are connected to the VPN network) if your Workbench (client) PC tries to connect to sites on the [public] Internet or any other network through any router, you will find that you cannot reach those sites. If you must be able to reach those sites while connected to the VPN network, you will need to add static routes (temporary or permanent) to your Workbench PC’s TCP/IP configuration. The setting of those routes is beyond the scope of this document because they are specific to your PC’s network, your VPN network, and any other networks you try to reach. It is possible (but unlikely) that you cannot resolve these routing issues. This may happen if one or more of these networks have overlapping addresses. Consult with a TCP/IP expert if necessary. Likewise, if you use L2TP, PPOE, PPTP, or PPP for any part of your underlying network connection, the VPN client will probably conflict with it. Specifically, Windows only allows one connection of these four protocol types to be active at any given time. What is the impact on Single Sign On? You will need to define the SSO Domain and the hosts of the SSO Domain in your Workbench PC’s "hosts" file or default DNS server. The DNS server of the VPN will not be able to provide name services without changing your Workbench PC’s TCP/IP configuration. I use Dynamic DNS, can I still use a dynamic DNS provider with VPN? Yes. You will need to register the IP address of the VPN gateway and firewall with the DDNS provider. What is the impact of VPN on my system performance? Impact on performance should be minimal. It does take a little longer to set up the connection. References: Microsoft TechNet VPN Overview 

Issue Table needed for linearizing a 10K thermistors for an I/Net 7756 (lower board) Product Line TAC INET Environment 7756 (lower board) Cause Thermistors require the use of a look up table to linearize the data. Resolution Thermistor Inputs on a PCU 7756 (lower board) Enter the Temperature data in °C (First Column - 31 entries) Enter the corresponding resistance data in Ohms (Second column - 31 entries) Enter the dissipation constant in milliwatts per °C: 2 Low Temperature : -22.11°F (-30.06°C) High Temperature: 247.92°F (119.95°C) Point Value in °F: M=0.00412; b=-22.1138 Point Value in °C: M=0.00228913; b=--30.0632065 Look Up Table: °C Ohms Current Self Htg Adj °C Adj °F VDC Counts Adj Cts 120 389 0.000481 0.045052 119.95 247.92 0.187217 1227 65535 100 680 0.000468 0.074521 99.93 211.87 0.318352 2086 56785 90 917 0.000458 0.096177 89.90 193.83 0.419987 2752 52407 80 1258 0.000444 0.12407 79.88 175.78 0.558714 3662 48027 70 1753 0.000425 0.158633 69.84 157.71 0.745767 4887 43643 60 2489 0.0004 0.199471 59.80 139.64 0.996477 6530 39257 55 3045 0.000383 0.223671 54.78 130.60 1.167114 7646 37062 50 3602 0.000368 0.243359 49.76 121.56 1.32407 8677 34869 45 4368 0.000348 0.264484 44.74 112.52 1.520045 9962 32676 40 5326 0.000326 0.283435 39.72 103.49 1.73757 11387 30483 35 6691 0.0003 0.300218 34.70 94.46 2.004374 13136 28292 30 8056 0.000277 0.308878 29.69 85.44 2.230837 14620 26104 28 8777 0.000266 0.311174 27.69 81.84 2.337168 15317 25229 26 9572 0.000255 0.312351 25.69 78.24 2.44533 16025 24355 25 10000 0.00025 0.3125 24.69 76.44 2.5 16384 23918 24 10450 0.000244 0.312349 23.69 74.64 2.555012 16744 23481 22 11420 0.000233 0.311127 21.69 71.04 2.665733 17470 22608 20 12490 0.000222 0.308669 19.69 67.44 2.77679 18198 21735 18 13680 0.000211 0.304953 17.70 63.85 2.888514 18930 20863 16 15000 0.0002 0.3 15.70 60.26 3 19661 19992 14 16470 0.000189 0.29383 13.71 56.67 3.111069 20388 19121 12 18090 0.000178 0.286579 11.71 53.08 3.220007 21102 18250 10 19900 0.000167 0.278241 9.72 49.50 3.327759 21808 17380 8 21920 0.000157 0.268921 7.73 45.92 3.433584 22502 16510 6 24180 0.000146 0.258715 5.74 42.33 3.537156 23181 15641 0 32660 0.000117 0.224329 -0.22 31.60 3.827942 25086 13035 -4 36200 0.000108 0.211999 -4.21 24.42 3.917749 25675 11293 -10 55340 0.0000765 0.162028 -10.16 13.71 4.234772 27753 8694 -14 69000 0.0000633 0.138199 -14.14 6.55 4.367089 28620 6957 -20 97130 0.0000467 0.105789 -20.11 -4.19 4.533277 29709 4350 -30 177200 0.0000267 0.063207 -30.06 -22.11 4.732906 31017 0 This spreadsheet is for a thermistor rated at 10,000 ohms at 25°C. Install a 10K Ohm Resistor in the "B" terminal (consult the TCON for the controller you are using for details) This look up table program is based on using 31 entries The data points do not have to be evenly spaced Click here to download this in pdf format. For the look up table to the 7716, 7718, 7728 and a 7756 (upper board), see 10k Thermistor Look Up Tables for a 7716, 7718, 7728 and a 7756 (upper board).

Issue MB30A or MB30B have been discontinued. Need find new serial butterfly valve actuator could work with TRV-S. Environment Butterfly Valve / Actuator Cause MB30A and MB30B have been discontinued. Resolution - New serial actuator, MF20-R and MF40-R, could work with butterfly valve TRV-S. No linkage needed. - MF20-R could work with up to DN125 size TRV-S butterfly valve; - MF40-R could work with DN150 and DN200 size TRV-S butterfly valve. - For detail, please see datasheet.

Issue A CO/CO2 sensor with 0-20/4-20mA outputs is requested in our portfolio. Environment aSENSE m III CO sensor CO2 sensor Cause The option of having a CO/CO2 sensor with 0-20 or 4-20mA outputs is sometimes requested. Resolution The aSENSE m III CO/CO2 sensor (part no 6553063000) is capable of both current and Voltage outputs. It's also configurable between 0% or 20% start point. These configurable options are made by positioning of jumpers on the connection board. See Senseair installation manual.