DriSteem Vapor-logic 4 Installation And Operation Manual
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DriSteem Vapor-logic 4 Installation And Operation Manual

DriSteem Vapor-logic 4 Installation And Operation Manual

Humidifier control system
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4
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Vap o r-l og ic
Hu mi di f i e r C o nt r ol Sys te m
Installatio n an d
Op eration Manu al

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  • Page 1 Important: Read and save these instructions. ® Vap o r-l og ic Hu mi di f i e r C o nt r ol Sys te m Installatio n an d Op eration Manu al...

  • Page 2: Table Of Contents

    DRI-STEEM ® Technical Support: Warnings and Cautions ....... . iv Overview 800-328-4447 Vapor-logic4 capabilities .
  • Page 3 Options and features Duct high limit switch option ......58 Modulating high limit transmitter option ....58 Temperature compensation control option .

  • Page 4: Warnings And Cautions

    Failure to follow all warnings and instructions could produce the hazardous situations described here and in the IOM, resulting in property damage, personal injury, or death. If the IOM is missing, go to www.dristeem.com to download a replacement. mc_071608_0910 Hot surfaces and hot water Steam humidification systems have extremely hot surfaces, and water in tanks, electrode cylinders, steam pipes,...

  • Page 5: Overview

    Overview Accurate, responsive control The Vapor-logic4 controller provides accurate, responsive RH control. PID control tunes the system for maximum performance. Modbus® , BACnet® , or LonTalk® allow interoperability with multiple building automation systems. Modbus is standard, and BACnet or LonTalk are available options. Web interface, provides the capability to set up, view, and adjust humidifier functions via Ethernet, either directly or remotely through a network.
  • Page 6 Overview Enhanced diagnostics include: Test outputs function using keypad/display or Web interface to Insert a USB flash drive verify component operation into the Vapor-logic4 Test humidifier function using simulated demand to validate board’s USB port to performance perform software updates, download data logs, and back up and restore data.

  • Page 7: Humidification System Overview

    Overview Figure 3-1: Typical humidification system layout (GTS humidifier shown) Dispersion assembly Humidifier Connect a computer directly to the Vapor-logic4 board, or through a Vapor-logic4 network, to use the Web interface keypad/display Every humidification system with a Vapor-logic4 controller has a keypad/display connection and an Ethernet connection for connecting to a Web interface on a computer.

  • Page 8: Vapor-Logic4 Board

    Overview Figure 4-1: Vapor-logic4 control board Power to board connection USB connection Factory connection points for drain, steam valve, etc. Field connection points for transmitters, power vent, etc. Field connection terminal labels have a white border. Factory connection points for water level control, gas valves, etc.
  • Page 9 Overview Figure 5-1: Vapor-logic4 control board connections LED-1 (power indicator) LED-2 P19: Steam = Steam or hot water valve = Power to board =Ground for blower and P16 triac = Ground for power return SSR/BL = SSR (electric systems)/or Blower (gas systems) Low = Low water probe Mid = Mid water probe Top = Top water probe...
  • Page 10 Overview Figure 6-1: Using the Vapor-logic4 keypad/display Typical Home screen Change set point from the Home screen by pressing the Up or Down arrow keys until set point is highlighted (as shown here), press Enter, press Up or Down arrow keys to change value, press Enter to confirm Tank temperature...

  • Page 11: Web Interface

    Overview Figure 7-1: Using the Vapor-logic4 Web interface (Setup screen shown) Click on a tab label to move to another screen Click on CHANGE to change value To change value: Highlight value; type in new value; click on APPLY Click here to view alarms Click here to view messages...

  • Page 12: Installation

    Installation ☐ See Figure 8-1 for field terminal block locations. Note that field Figure 8-1: wiring connection locations on the Vapor-logic4 board are Vapor-logic4 control board detail surrounded with a white border. Full board ☐ See the figure on the next page for instructions on how to make wiring connections.
  • Page 13 Installation Figure 9-1: Vapor-logic4 terminal block detail and connection instructions Tighten screw after wire is inserted. Maximum torque is Terminal block plug. 3 in-lb (0.34 N-m) Make connections when the plug is Remove insulation attached to the from end of wire board, or remove for and insert wire here.

  • Page 14: Installation Process

    Installation The Vapor-logic4 board is designed to make installation very easy: white. inserting wires and tightening screws. board fully configured, with drain, fill, and other humidifier components factory-wired to the board, and the keypad/display attached to the humidifier and connected to the Vapor-logic4 board.
  • Page 15 Installation – Vapor-logic4 keypad – Ethernet – Modbus – BACnet – LonTalk – Multiple-tank communication 2. Complete the Setup process. See instructions beginning on Page 28. 3. Start up humidifier(s). See instructions on Page 37. Refer to the Pre-installation Checklist and drawings on the previous pages, and then make the field wiring connections as described on the following pages.

  • Page 16: Control Input

    Installation Connect control input signal wiring by inserting wires into Figure 12-1: Terminal P11 (labeled 24vdc, RH, and ground) per the wiring Terminal P11 diagram on the next page. Tighten screws; maximum torque is 3 in-lb (0.34 N-m). Allowed inputs at Terminal P11 include: Transmitters provide a signal proportional to the RH or dew point being measured.
  • Page 17 Installation Figure 13-1: Vapor-logic4 control input wiring connections Signal by others Transmitter On-off RH humidistat...
  • Page 18 Installation DRI-STEEM offers three control options for all its humidification systems controlled by Vapor-logic4: On-off control, demand signal control, and transmitter control. On-off control On-off control—the simplest control scheme—does exactly what its name implies: the output device turns fully on, then fully off. The humidistat that controls the humidifier has a differential between the on and off switch points.
  • Page 19 Installation Modulating demand signal control Calculation of transmitter % RH With modulating demand signal control, a modulating humidistat or a building automation system sends a signal to the Vapor-logic4 (mA reading) – 4 mA % RH = x 100% controller, which then sends a signal to the humidifier to produce 16 mA a directly proportional steam output.

  • Page 20: Limit Controls

    Installation Airflow proving switch Figure 16-1: Terminal P13 Connect wiring for a duct, Space Distribution Unit (SDU) airflow proving switch by inserting wires into the terminal block plug at P13 (labeled AFsw and 24vac) per the wiring diagram on the next page.
  • Page 21 Installation Figure 17-1: Vapor-logic4 limit controls wiring connections Airflow switch In a duct When using an SDU Duct high limit (not used on SDU or Area-type) Temperature compensation transmitter or auxiliary temperature sensor Note: This control is not available for XT humidifiers.
  • Page 22 Installation Connect wiring for a temperature compensation transmitter or an Figure 18-1: auxiliary temperature sensor by inserting wires into the terminal Terminal P14 block plug at P14 (labeled 24vdc and TS) per the wiring diagram on the previous page. Tighten screws; maximum torque is 3 in-lb (0.34 N-m).

  • Page 23: Vapor-Logic4 Keypad/Display

    Installation Vapor-logic4 keypad/display Figure 19-1: Terminal P10 If your keypad/display is factory-mounted and connected to the Vapor-logic4 board, proceed to installing the next device required by your system. If your keypad/display was shipped loose, mount the keypad/ display in a location so that the provided cable is long enough to connect the keypad/display to the Vapor-logic4 board.
  • Page 24 Installation Figure 20-1: Vapor-logic4 communication wiring connections Communication...

  • Page 25: Web Interface Communication

    Installation Web interface communication Figure 21-1: Terminal P9 Utilizing the Vapor-logic4 Web interface is optional. The humidifier can be operated using the keypad/display and/or the Web interface. When using the Web interface, the humidifier can be accessed by a computer either directly or through a network. Each Vapor-logic4 controller ships with the static IP address of 192.168.1.195.
  • Page 26 Installation After a system prompt appears, type in ipconfig and then hit Enter. The current IP address of the computer should appear. If the first three segments of that IP address are different than the first three segments of the humidifier’s default IP (192.168.1.xxx), you must change either your computer or Vapor-logic4’s IP address such that they match each other.

  • Page 27: Other Communication Connections

    Installation 4. Connect to the humidifier. Figure 23-1: a. Using a computer connected to the Vapor-logic4 board, Entering the IP address open a Web browser such as Mozilla® Firefox® or Internet Explorer® . b. Find the browser address bar (see Figure 23-1), delete all existing text in the browser address bar, type the Vapor-logic4 IP address into the browser’s address bar, and press Enter.
  • Page 28 Installation Programmable triac Figure 24-1: Terminal P16 See “Programmable triac maximum current” in Caution below. Connect wiring to the output by inserting wires into the terminal block plug at P16 (labeled Triac) and into the terminal block plug at P19 (labeled ground), per the wiring diagram in Figure 25-1. This connection allows remote activation of a device such as a fan or signal light.
  • Page 29 Installation Figure 25-1: Figure 25-2: Vapor-logic4 programmable triac and relay wiring connections Terminal P16 Programmable triac and relay Terminal P16 Terminal P16: (all are triacs) Triac = Programmable output (Note: Connect ground at P19) PV/CA = Power vent/combustion air control signal Area-type and SDU dispersion fans output) SDU = Space Distribution Unit (24...

  • Page 30: Sensor Placement

    Installation Other factors affecting humidity control Humidistat and sensor locations are critical Humidity control involves more than the Humidistat and sensor location have a significant impact on controller’s ability to control the system. Other humidifier performance. In most cases, do not interchange duct factors that play an important role in overall and room humidity devices.
  • Page 31 Installation Figure 27-1: Recommended sensor location High limit humidistat or high limit transmitter (set at 90% 8' to 12' RH maximum) for VAV applications (2.4 m to 3.7 m) Outside air min. Airflow switch or differential pressure switch (sail type Damper control recommended for VAV applications) Relief air...

  • Page 32: Step 2 - Setup

    Installation To simplify the field-installation process, humidifiers are sent from Figure 28-1: the factory configured as ordered. However, some settings are Keypad/display screens unknown at the factory and need to be defined during the setup “A” indicates that these process using the Setup menu. The Setup menu is also where you settings apply to Tank A.

  • Page 33: Using The Web Interface

    Installation Using the Web interface Although not required for humidifier operation, the Web interface allows convenient and remote access to Vapor-logic4. See Page 21 for Web interface connection and IP address instructions. Follow the instructions below to complete the setup process.
  • Page 34 Installation Table 30-1: Setup menu Minimum Maximum Menu item Default value Units Notes value value Note: Your system might not have all of the items listed in this table (Pages 30 through 36). Input signal RH transmitter Transmitter enabled RH set point RH offset PID tuning RH PID band...
  • Page 35 Installation Table 30-1: Setup menu (continued) Default Minimum Maximum Menu item Units Notes value value value Humidistat Humidistat enabled Limit control HL switch Switch in system HL transmitter Transmitter enabled Duct HL set point % RH Span (throttle span) is an offset below the high limit set Duct HL span % RH point where the humidifier reduces output but does not...
  • Page 36 Installation Table 30-1: Setup menu (continued) Minimum Maximum Menu item Default value Units Notes value value Water management Drain valve (not an XT menu item) Type Model-specific Damper Motorized Changing drain valve settings requires changing the drain valve. Actuator Electric Manual Electric Normally closed...
  • Page 37 Installation Table 30-1: Setup menu (continued) Minimum Maximum Menu item Default value Units Notes value value Water management (continued) Skim (not an XT menu item) Skim enabled Enabled as default except on DI water systems. Skim duration Model-specific Seconds End-of-season drain Enabled as default except on DI water systems.
  • Page 38 Installation Table 30-1: Setup menu (continued) Default Minimum Maximum Menu item Units Notes value value value Remote temp sensor Changing temperature sensor settings can require (not an XT menu item) component changes for system to operate correctly. Temp compensation Temp comp enabled Temp monitor Temp monitor enabled Temp sensor offset...
  • Page 39 Installation Table 30-1: Setup menu (continued) Default Minimum Maximum Menu item Units Notes value value value Programmable outputs Programmable dry contact (P12) is rated for 24 VAC, Dry contact 10 Amp maximum. Exceeding this maximum rating can cause the dry contact (relay) component or the Vapor-logic4 board to fail.
  • Page 40 Installation Table 30-1: Setup menu (continued) Default Minimum Maximum Menu item Units Notes value value value Units Display inch-pound Display SI Security Require password Set password None 9999 Enter a four-digit password using numbers only. The number of inactivity minutes Vapor-logic4 remains Time-out Minutes in read-write mode before returning to read-only mode...

  • Page 41: Step 3 - Startup

    Installation To start up your humidifier, go to the Start-up Checklist in your Multi-tank mode humidifier’s Installation, Operation, and Maintenance manual. XT humidifiers do not operate in multi-tank mode. See “Multiple-tank operation” on Page 77. Staging multiple XT humidifiers Up to four XT electrode steam humidifiers can be staged to operate in sequence.

  • Page 42: Operation

    Operation Vapor-logic4 keypad/display has the following menus and screens: Figure 38-1: Using the keypad/display – Status – Diagnostics – Alarms – Setup Press the Main softkey to go to the Main menu selection screen. Press the Up and Down arrow keys to choose a submenu and press Press the Main Enter to select.

  • Page 43: Changing Mode And Set Point

    Operation Vapor-logic4 returns to the Home screen on the keypad/display Figure 39-1: after a user-defined period of idleness. The Home screen displays Keypad/display Home screen the items most frequently viewed: Actual space RH or dew point, SPACE RH SET PT 212˚...

  • Page 44: Status Screen

    Operation Using either the keypad/display or the Web interface, the Status Figure 40-1: screen is where all humidifier parameters can be viewed. Keypad/display screens See the tables on the following pages for Status screen item “A” indicates these descriptions for both the keypad/display and Web interface. settings apply to Tank A.
  • Page 45 Operation Table 41-1: Status screen Note: Your system might not have all of the items listed in this table (Pages 41 and 42). Minimum Maximum Menu item Default value Units Notes value value Operating mode of humidifier. Choose from Auto, Standby, or Drain. Auto mode, the humidifier operates normally.
  • Page 46 Operation Table 41-1: Status screen (continued) Minimum Maximum Menu item Default value Units Notes value value Systems using tap or softened water control water levels High probe signal* 4000 counts electronically using a three-rod probe. The controller initiates the High water probe* No water Water following events when the probes are in contact with water:...

  • Page 47: Diagnostics Screen

    Operation The Diagnostics screen provides access to system messages, system Figure 43-1: data, humidifier information, and test functions. Keypad/display screens See the following pages for more information about the Diagnostics screen. SPACE RH SET PT 212˚ System messages and the Messages Log When a system event occurs (e.g., when regularly scheduled unit OUTPUT servicing becomes due), a system message is added to the Messages...
  • Page 48 Operation Figure 44-1: Vapor-logic4 Web interface Diagnostics screen Click on buttons to activate functions. View messages by clicking on “View Messages” on any screen or by opening Clear messages the Diagnostics screen. by clicking here.
  • Page 49 Operation Table 45-1: Diagnostics menu Minimum Maximum Menu item Notes value value Note: Your system might not have all of the items listed in this table (Pages 45 through 47). Download data Download to USB Download all data sets to the USB flash drive. Download via Ethernet Only available from web page Data point interval...
  • Page 50 Operation Table 45-1: Diagnostics menu (continued) Minimum Maximum Menu item Default value Units Description value value Test outputs (continued) Contactor 1, 2, 3, or 4 SSR control Ignition module 1, 2, 3, or 4 Cycles output to verify operation. Blower speed control Power vent control Steam valve Test run*...
  • Page 51 Operation Table 45-1: Diagnostics menu (continued) Message Description Does message auto-clear? Messages Replace contactors Contactors have reached normal life span. Replace contactors. Service unit Regularly scheduled unit servicing is due. Drain pending Auto drain/flush will occur at next scheduled time. No airflow No duct airflow I-lock open...

  • Page 52: Alarms Screen

    Operation The Alarms menu displays system alarms. Using the keypad/ Figure 48-1: display, go to the Alarms menu by pressing the Alarms softkey Keypad/display screens (which will be flashing if there is an Alarm), or by pressing the Home softkey and then the Alarms softkey. Using the Web SPACE RH SET PT 212˚...
  • Page 53 Operation Table 49-1: Alarms menu Does alarm Alarm label Description auto-clear? Tank temp sensor failed Tank temp sensor has failed. RH signal out of range RH signal is out of range. Dew point sig. out of range Dew point signal is out of range. Demand signal Demand signal is out of range.

  • Page 54: Setup Menu

    Operation Table 49-1: Alarms menu (continued) Does alarm Alarm label Description auto-clear? No water. Supply water failure, or drain malfunctioning/leaking. Supply water failure Fill has been on for 30 minutes without reaching high water probe or target current. Cycles the fill and drain (XT systems only) valves 20 times and retries filling for 10 additional minutes before an alarm is generated.

  • Page 55: Improves Humidifier Response Time

    Operation When your system has a humidity or dew point transmitter, you Kp = Proportional gain factor can adjust and control the set point through the keypad/display or Ki = Integral gain factor Web interface using a proportional, integral, and derivative (PID) Kd = Derivative gain factor control loop.

  • Page 56: The Integral Term

    Operation The integral term The integral term is an accumulation of RH error over time multiplied by the integral gain. Every 1/10 second when the demand is updated, the instantaneous RH error (RH set point – actual RH) is added to a temporary variable that accumulates the error.

  • Page 57: The Derivative Term

    Operation The derivative term The derivative term is the measured change in error over time multiplied by the derivative gain (differentiating error with respect to time). If the actual measured RH is below set point and is rising, the derivative term subtracts from the demand in anticipation of the approaching set point.

  • Page 58: Pid Setup Tips

    Operation PID setup tips A large PID band (10% to 20%) yields tighter and more stable control with longer response times. A small PID band produces quicker response times, but control may become unstable if the RH regularly goes outside the band. As a rule, start with a PID band of 10%.

  • Page 59: Water Level Control

    Operation Probe system XT humidifiers do not use conductivity probes for water level control. See “Electrode steam Humidifiers with tap/softened fill water use conductivity probes humidifiers” on Page 57. to measure and control the water level for optimum operating efficiency. Water conductivity must be at least 30 μS/cm for the probe system to operate.

  • Page 60: Float Valve System

    Operation XT humidifiers do not use the float valve system Float valve system for water level control. See “Electrode steam DI/RO water systems (except for steam injection) use a float valve humidifiers” on Page 57. system to control water levels for optimum operating efficiency. DI/RO systems are used where water/steam purity is important, CAUTION where demineralized water is needed to improve performance or...

  • Page 61: Electrode Steam Humidifiers

    Operation Electrode steam humidifiers Supply water In electrode steam humidifiers (see Figure 57-1), steam output Electrode steam humidifiers use tap or softened is directly related to the resistance of the water in the steam supply water. Demineralized, deionized, and reverse-osmosis water are not conductive enough cylinder and, therefore, the conductivity of the water between the for electrode steam humidifiers.

  • Page 62: Duct High Limit Switch Option

    Operation When a duct high limit option is ordered, DRI-STEEM provides either a duct high limit switch or a duct high limit humidity transmitter (4 to 20 mA output, 0 to 100% RH range) for duct mounting. Duct high limit switch option The duct high limit switch prevents duct saturation by turning off the humidifier when reaching the device set point.

  • Page 63: Auxiliary Temperature Sensor Option

    Operation If the window temperature falls below the dew point, Vapor-logic4 automatically decreases the RH set point so moisture does not form on windows. The Home screen displays the modified RH set point, and an asterisk (*) appears next to the modified RH set point, denoting that temperature compensation has taken control of the RH set point.

  • Page 64: Aquastat Set Point Feature

    Operation Aquastat set point feature Note: This feature is not applicable for XT humidifiers. The aquastat set point is the minimum tank temperature the Vapor-logic4 controller maintains when there is no call for humidity or when safety circuits are not satisfied (e.g., high limit or airflow proving switch).

  • Page 65: Sensor Offsets

    Operation Sensor offsets All external transmitters shipped with Vapor-logic4 can be field calibrated from the Setup menu. For example, if the system is equipped with an RH transmitter, there is an RH offset setting. The factory default for all transmitter offset settings is zero. The sensors that have this adjustment capability are the humidity, duct high limit, temperature compensation, and dew point transmitters.

  • Page 66: Draining When Using Softened Water

    Operation Draining when using softened water When using softened water, draining occurs for a one-minute duration after a period of time based on 1000 hours of 100% operation to remove residue from the drain valve mechanism. End- of-season draining occurs as described below. Skim timer With a tap/softened water configuration, the Vapor-logic4 controller has a skim timer.

  • Page 67: Setting Date And Time

    Operation Setting date and time The Vapor-logic4 controller contains a real-time clock that is used for several features including the drain and flush sequence and alarm logging. If you need to reset the date or time, go to the Setup menu. The date and time will need to be reset whenever the Vapor-logic4 controller has been powered off for more than 72 hours, such as when starting up at the beginning of the humidification season.

  • Page 68: Downloading Historical Data

    Operation Note: Data is saved to nonvolatile memory every Downloading historical data 60 minutes. If unit power is lost, up to 60 Vapor-logic4 acquires data at one-minute intervals and retains minutes of data could be lost. it for seven rolling days. These data, available for download and sorting, contain the details shown in Table 64-1.

  • Page 69: Firmware Updates

    To update your Vapor-logic4 controller to the latest firmware version, perform the following procedure: 1. Navigate to the Vapor-logic4 page at www.dristeem.com, or type the following into your browser’s address bar: www.dristeem.com/products_ControllersAcess_VL4.jsp 2. Click the Firmware updates link on the Vapor-logic4 page.
  • Page 70 Downloading Vapor-logic4 firmware updates 1. Click the link shown to the right on the Vapor-logic4 firmware updates page of www.dristeem.com. If a security window appears, click the Save button. Note: The screenshots in this table depict typical Internet Explorer screens in Windows XP.
  • Page 71 Operation Table 66-1: Downloading Vapor-logic4 firmware updates (continued) 6. Click the Browse button in the WinZip Self-Extractor window, and select your USB flash drive as the target location. 7. Click the Unzip button in the WinZip Self-Extractor window. A WinZip window opens to confirm that the firmware update has been unzipped.

  • Page 72: Installing Firmware Updates

    Operation Installing firmware updates WARNING Note: For mission-critical applications, DRI-STEEM recommends that you have a spare Vapor-logic4 board on hand before updating. Electric shock hazard 1. Place the humidifier system in Standby mode. All circuits must be energized for this firmware update procedure.

  • Page 73: Test Outputs And Test Run

    Operation Not all USB drives perform equally. If a USB flash drive fails to update the Vapor-logic4 firmware, perform the following procedure with a different USB flash drive: 1. Prepare a new flash drive as described in Step 3 of “Downloading firmware updates”...

  • Page 74: Connections

    ProtoCessor module here. 3. Select the BACnet communication channel in the BACnet Setup NOTE: Orient the LON ProtoCessor module as menu. shown, with wire connectors end at the side of 4. Cycle the power to activate BACnet. the Vapor-logic 4 board.
  • Page 75 Operation Table 71-1: Interoperability variable and object names Variable name and Read Only Modbus BACnet LonTalk variable Description Units Range BACnet object name (RO) or register Object names** Read Write number* Type and SI units I-P units SI units (RW) Instance units Read-only analog variables...
  • Page 76 Operation Table 71-1: Interoperability variable and object names (continued) Variable name and Read Only Modbus BACnet LonTalk variable Description Units Range BACnet object name (RO) or register Object names** Read Write number* Type and SI units I-P units SI units units (RW) Instance...
  • Page 77 Operation Table 71-1: Interoperability variable and object names (continued) Variable name and Read Only Modbus BACnet LonTalk variable Description Units Range BACnet object name (RO) or register Object names** Read Write number* Type and SI units SI units (RW) Instance units units Read-only digital I/O...
  • Page 78 Operation Table 71-1: Interoperability variable and object names (continued) Variable name and Read Only Modbus BACnet LonTalk variable Description Units Range BACnet object name (RO) or register Object names** Read Write number* Type and SI units SI units units units (RW) Instance Faults and alarms (cont.)
  • Page 79 Operation Table 71-1: Interoperability variable and object names (continued) Variable name and Read Only Modbus BACnet LonTalk variable Description Units Range BACnet object name (RO) or register Object names** Read Write number* Type and SI units SI units units units (RW) Instance Faults and alarms (cont.)
  • Page 80 Operation Table 71-1: Interoperability variable and object names (continued) Variable name and Read Only Modbus BACnet LonTalk variable Description Units Range BACnet object name (RO) or register Object names** Read Write number* Type and SI units SI units (RW) Instance units units Messages...

  • Page 81: Multi-Tank Mode Defined

    Operation Multi-tank mode defined Staging multiple XT humidifiers XT humidifiers do not operate in multi-tank In multi-tank mode, one Vapor-logic4 controller can control multiple mode; however, up to four XT humidifiers can humidifier tanks, and tanks in a multi-tank system can vary by energy be staged to operate in sequence.

  • Page 82: Tank Grouping To Maximize Efficiency

    Operation Configuration tips Tank grouping to maximize efficiency Priority 1 and priority 2 tanks can be grouped to improve efficiency. Use priority groups 1 and 2 to group tanks Tanks not identified as trim or redundant tanks are factory-assigned to for maximum energy efficiency.
  • Page 83 Operation Table 79-1: Multitank priority groups application example Priority group Assignment Description Application considerations changes. An SSR-controlled electric Trim resistive unit will provide the best control. GTS and STS are the most cost Load effective, but any unit can be used.

  • Page 84: Wiring A Multi-Tank Group Of Humidifiers

    Operation Important: Wiring a multi-tank group of humidifiers To wire a multi-tank group of humidifiers: All multi-tank communication must go through the master controller to reach slave tanks. 1. Determine which control board is the master controller. The Therefore, keypad/display communication master controller ships with the keypad/display.

  • Page 85: Multi-Tank Fieldbus Profiles

    Operation To change a priority group, go to the Setup menu to access Other system parameters and interoperability Multi-tank setup/Tank priority group. General system parameters are set the same as To add a tank to a multi-tank system: for stand-alone tank/controller. See the Setup section of this manual for instructions.

  • Page 86: Using The Keypad/Display

    Operation The keypad/display can communicate with every humidifier tank’s controller in a multi-tank group. When a multi-tank group is operating normally, the keypad/display shows the Master screen. See the screens below for information about display screens in a multi-tank system. Master screen SPACE RH SET PT...

  • Page 87: Using The Web Interface

    Operation Additional Web interface screens, described below, appear when operating in multi-tank mode. This letter identifies which tank (A ... P) you are viewing. Each connected tank automatically shows up as a link. Click on a tank link to view its status. Important: All system tanks must be network-connected via Ethernet for these links to function.

  • Page 88: Troubleshooting Guide

    Operation DRI-STEEM Technical Support: Solving issues 800-328-4447 1. Review issues, possible causes and recommended actions. The troubleshooting guide on the following pages presents issues, possible causes and recommended actions for typical issues. 2. Review tank or dispersion manuals. If you have a tank-related or dispersion-related issue, you may also need to refer to those specific product manuals.
  • Page 89 Operation Table 85-1: Troubleshooting guide Issue Possible causes Actions Green power indicator light is off. transformer. Setup menu to program dry contact and/or 24 from Setup menu VAC triac. from the dry contact connection point on No remote indication of alarm light terminal block P12 or from the triac connection No remote activation of fan point on terminal block P16.
  • Page 90 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions When transmitter or humidistat alarms appear, Alarm: possible causes are: At terminal P11 RH signal out of range -- RH signal: 2-10 VDC. -- Dew point signal: 2-10 VDC. -- Demand signal: 0-10 VDC. At terminal P13 Alarm: signals are: 4-20 mA, or 0-10 VDC...
  • Page 91 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions Alarm: Do not use shielded Water probe miswired (screened) wiring. Alarm: Faulty water probe exceed the recommended 50' (15 m) limit. the humidifier's manual. installed correctly, that there are no elbows or restrictions in the piping, and that the length of the piping is not too long.
  • Page 92 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions Alarm: Tank is not full. Excessive fill time Alarm: Excessive refill time wired menu. valve. ”In” should be visible on fill valve body. valve and make it difficult to open rod assembly.
  • Page 93 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions Unit does not fill with water. open, verify proper 24 VAC to fill valve. If voltage is present and valve does not open, replace valve or valve coil. pressure exists. mode Fill valve does not close reset to automatic.
  • Page 94 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions control board. Alarm: Tank not draining valve. and pitch requirements. system, or automatic drain is disabled drain pipe Unit does not perform automatic drain sequence drain valve. valve. Unit does not perform end-of- setup season drain Continued...
  • Page 95 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions Alarm: Tank temperature sensor failed 1000 Ohms = 68 °F (20 °C); 1702 Ohms = 212 °F (100 °C). temperature thermostat Alarm: Tank overtemp (14 ºC) over boiling temperature Reduced or no output (even Electric humidifiers: though water level is correct) Electric humidifiers:...
  • Page 96 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions Heater burnout replace with larger humidifier. Consult DRI-STEEM. Increase skim duration, frequency of drain cycle, and/or frequency of cleaning. Use softened makeup water. burned-out heater verify chloride content in supply water is very low.
  • Page 97 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions Humidity is below desired level. humidity level humidifier. repair, or replace as needed. fill P-trap with water or repair as needed. recommended height (see humidifier tank manual for water seal height).
  • Page 98 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions Humidity above set point. transmitters malfunctioning, repair or recalibrate. Hunting (humidity swings above and below desired set repair or replace. point) control settings: RH set point, high limit set point, cycle rate, PID tuning, etc. placement”...
  • Page 99 Operation Table 85-1: Troubleshooting guide (continued) Issue Possible causes Actions Alarm: Blocked flue high wind vent cap or isolate as recommended by local codes. Alarm: Gas valve [number] fault Alarm: Burner [number] fault pressure to manifold per rating plate. to gently push down fibers near flame sensor. Alarm: Ignition module [number] fault gas valve...

  • Page 100: Replacement Parts

    Operation Table 96-1: Vapor-logic4 replacement parts Description Quantity Part number Main board 408495-001 Keypad/display (includes printed circuit board, LCD display screen, membrane switch, front and back of plastic cover) 408495-010 27" (686 mm) 408490-014 Keypad/display communication cable (contact DRI-STEEM for lengths other than 27" (686 mm) and 60" (1524 mm) 60"...
  • Page 101 Operation Figure 97-1: Vapor-logic4 replacement parts Main board Keypad display Molex connector plug (2-position shown) LonTalk card...
  • Page 104 +3211823595 (voice) +3211817948 (fax) The original user may extend the term of the DRI-STEEM Limited Warranty E-mail: marc.briers@dristeem.com for a limited number of months past the initial applicable warranty period and Continuous product improvement is a policy of term provided in the first paragraph of this Limited Warranty. All the terms and DRI-STEEM Corporation;...

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