DriSteem VAPOR-LOGIC Version 6 Installation And Operation Manual

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VAPOR-LOGIC® VERSION 6

Humidifier Control System

Installation and Operation Manual

Page 2

Table of contents

DriSteem® Technical Support

800-328-4447

WARNINGS AND CAUTIONS ..................................................

OVERVIEW.................................................................1

Vapor-logic capabilities ....................................1

Humidification system overview ...............................3

Vapor-logic board ........................................4

Display ................................................6

Web interface ...........................................7

INSTALLATION ..............................................................8

Pre-installation Checklist ....................................8

Installation process ......................................10

Step 1 – Field wiring: ....................................12

Control input ........................................12

Control input signals ..................................14

Limit controls ........................................16

Vapor-logic display ...................................19

Communication connections .............................19

Field wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Sensor placement ....................................26

Step 2 – Setup .........................................28

Using the touchscreen display ............................28

Using the Web interface ................................29

Setup screen ........................................29

Step 3 – Startup ........................................37

OPERATION ..............................................................38

Using menus and screens ...............................38

Vapor-logic display has the following menus and screens: ........38

Home screen (touchscreen display) ........................39

Changing mode and set point ............................39

Tank activities defined .................................39

Status screen ...........................................40

System alerts ...........................................44

Status LED (Vapor-logic control board) .........................48

Status LED (Touchscreen) ..................................50

PID tuning .............................................51

Improves humidifier response time .........................51

The proportional term ..................................51

The integral term .....................................52

The derivative term ...................................53

PID band ..........................................53

PID setup tips .......................................54

Universal water level control ................................55

Automatic drain sequence, all water types ......................56

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Table of contents

Options and features .....................................57

Duct high limit switch option .............................57

Modulating high limit transmitter option .....................57

Temperature compensation control option ....................58

Auxiliary temperature sensor option ........................58

Tank preheat feature ..................................58

Aquastat set point feature ...............................59

Freeze protection .....................................59

Fan-based dispersion operation ...........................59

Sensor offsets .......................................60

Skim timer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

End-of-season drain ...................................60

Service interval ......................................60

Setting date and time ..................................61

Battery backup, nonvolatile memory .......................61

Security/password ....................................61

Downloading historical data .............................62

Backing up and restoring settings .........................62

Firmware updates .......................................63

Downloading firmware updates. . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Installing firmware updates ..............................66

Test outputs and test run ...................................67

Modbus, BACnet, LonTalk interoperability ......................68

Connections ........................................68

Installing LonTalk as a retrofit ............................68

Multiple-tank operation ....................................78

Multi-tank mode defined ................................78

Multi-tank control interface ..............................78

Start-up order and trim tanks .............................78

Tank grouping to maximize efficiency ......................79

Redundant tank for mission-critical applications ................79

Tank wear leveling ....................................79

Fault tolerance .......................................79

Wiring a multi-tank group of humidifiers .....................81

Multi-tank system setup .................................81

Changing a priority group ..............................82

Other system parameters and interoperability .................82

Multi-tank operation with Web interface .....................82

TROUBLESHOOTING........................................................84

Troubleshooting guide ....................................84

REPLACEMENT PARTS ....................................................... 94

WARRANTY .............................................................. 96

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Warnings and cautions

WARNINGS AND CAUTIONS

WARNING

Indicates a hazardous situation that could result in death or serious injury if instructions are not followed.

WARNING

Read all warnings and instructions

This page provides important safety instructions; it is intended to supplement — not replace — the humidiﬁer's Installation, Operation, and Maintenance Manual (IOM). Read the IOM that was provided with the humidiﬁer before performing service or maintenance procedures on any part of the system. 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.

Hot surfaces and hot water

Steam humidiﬁcation systems have extremely hot surfaces, and water in tanks, electrode cylinders, steam pipes, and dispersion assemblies can be as hot as 212 °F (100 °C). To avoid severe burns, allow the entire humidiﬁcation system to cool.

Follow the cool-down procedure in the humidiﬁer's IOM before performing service or maintenance procedures on any part of the system.

Shut down the energy source

Before performing service or maintenance procedures on any part of the humidiﬁcation system, verify that all energy sources are off. Energy sources can be electricity, gas, steam, or hot liquid. Failure to shut down the energy source could result in carbon monoxide poisoning, ﬁre, explosion, electrical shock, and other hazardous conditions. These hazardous conditions could cause property damage, personal injury, or death.

Contact with energized circuits can cause property damage, severe personal injury or death as a result of electrical shock or ﬁre. Do not remove the shroud/cover, electrical panel cover/door, access panels, or heater terminal cover until electrical power is disconnected.

Follow the shutdown procedure in the humidiﬁer's IOM before performing service or maintenance procedures on any part of the system.

CAUTION

Indicates a hazardous situation that could result in damage to or destruction of property if instructions are not followed.

CAUTION

Hot discharge water

Discharge water can be as hot as 212 °F (100 °C) and can damage the drain plumbing.

Humidiﬁers equipped with a water tempering device need fresh make-up water in order to function properly. Make sure the water supply to the water tempering device remains open during draining.

Excessive supply water pressure

Supply water pressure greater than 80 psi (550 kPa) can cause the humidiﬁer to overﬂow.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Vapor-logic capabilities

ACCURATE, RESPONSIVE CONTROL

The Vapor-logic 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.

USB port allows easy ﬁrmware updates, and data backup and restore capability.

Real-time clock allows time-stamped alarm and message tracking, and accurate drain and ﬂush scheduling.

OVERVIEW

Auxiliary temperature sensor/transmitter allows temperature compensation

control to prevent window condensation, or air temperature monitoring, such as in a duct.

Programmable outputs allow remote signaling and device activation.

Multiple-humidiﬁer control allows staged control of up to 8 humidiﬁers with

one controller.

Controller data, such as RH, air temperature, water use, energy use, and alerts can be downloaded to a PC for viewing and analysis. RH, alerts, and messages can also be viewed on the display and Web interface.

More capabilities on the next page >

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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OVERVIEW

Vapor-logic capabilities

Enhanced diagnostics include:

• Test outputs function using display or Web interface to verify component

operation

• Test humidiﬁer function using simulated demand to validate performance

Insert a USB ﬂash drive

into the Vapor-logic board’s USB port to

perform software

updates, download

data logs, and back

up and restore data.

Use the Vapor-logic display or the standard Web interface, shown here, to control your humidiﬁcation system.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Humidiﬁcation system overview

FIGURE 3-1: TYPICAL HUMIDIFICATION SYSTEM LAYOUT (GTS HUMIDIFIER SHOWN)

Dispersion assembly

Humidiﬁer

OVERVIEW

Connect a computer directly to the Vapor-logic board, or through a network, to use the Web interface

Vapor-logic display

OM-7942_VL

Every humidiﬁcation system with a Vapor-logic controller has a display connection and an Ethernet connection for connecting to a Web interface on a computer. A GTS humidiﬁer is shown here, with display mounted on the cabinet. Other types of DriSteem humidiﬁers can have the display contained within a control cabinet or mounted remotely.

OPERATING CONDITIONS

The Vapor-logic main board and display must be operated and stored within the limits listed below. Exceeding these limits can result in poor display performance and/or damage to the unit.

Main board Operating temperature: 32 °F to 158 °F (0 °C to 70 °C) Storage temperature: -40 °F to 185 °F (-40 °C to 85 °C) Operating humidity range: <95% noncondensing

Display Operating temperature: 32 °F to 158 °F (0 °C to 70 °C) Storage temperature: -22 °F to 176 °F (-30 °C to 80 °C) Operating humidity range: <90% noncondensing

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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OVERVIEW

Vapor-logic board

FIGURE 4-1: VAPOR-LOGIC CONTROL BOARD

Power connection

Factory connection points for water level control, gas valves, etc.

: Components

Factory connection points for drain, ﬁll, etc.

Ethernet connection for computer network and/or BACnet/IP

Display connection

Field connection points for transmitters, airﬂow switch, etc.

Field connection terminal labels (white border)

Multi-tank connection

BACnet or Modbus connection

Connection pins for optional LonTalk module

The photo above shows key components of the Vapor-logic control board. See the illustration on the next page for more detail.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Vapor-logic board: Connections

FIGURE 5-1: VAPOR-LOGIC CONTROL BOARD CONNECTIONS

D4 , 21 VDC indicator

P1: 24vac = Power to board

= Ground for power return

P2: Low = Low water probe Mid = Mid water probe Top = Top water probe

= Ground for water probe

P3: GV1 = Gas valve 1 (24vac input) BT1 = Blower tach 1 (pulse tach input) LW = Flue or tank overtemp (24vac input) FPsw = Flue pressure switch

(24vac input)

P4: Isw = Interlock switch (24vac input) TT = Tank temp sensor (RTD input)

= Ground for tank temp sensor

CS1 = Flue temp sensor

P5: GV2 = Gas valve 2 (24vac input) BT2 = Blower tach 2 (pulse tach

input)

P6: 21vdc = 21vdc CS2 = Analog input (4-20 mA)/

Drain temp sensor

Connection pins for optional LonTalk module

24VAC

TOP MID LOW

FPsw LW BT1 GV1

CS1 TT lsw

BT3 GV3 BT2 GV2CS2 21VDC BT4 GV4

Water probe LEDs

Status LED

Power vent switch jumper

J1101

USB port

Combust air switch jumper

Ethernet connection to laptop

computer, network, or BACnet IP

RS485 termination for multi-tank

Vapor-logic touchscreen display connection

J1001

FIELDBUS = Modbus or BACnet MS/TP (RS485)

CPU LED

+ —

FIELDBUS

J404

J403

+ —

MULTI-TANK

(RS485)

P19

P18

P17

P16

P15

P14

P13

P12

P11

P20

MASTER ENB

(Master enable/disable)

P19:

= Ground for blower or steam valve

SSR/BL = All blowers

+ —

SSR / BL STEAM

P18: (all are 24VAC outputs) CT4 = GTS LX reﬁll valve CT2 = Ignition module 2

CT2 CT3 CT4FILL DRAIN CT1

P17: (all are 24VAC outputs) CT1 = Ignition module 1 Drain = Drain valve Fill = Fill valve

P16: (all are 24VAC outputs) SDU = Space Distribution Unit/Area type NO-2 = Normally open #2.

NO-2 SDU PV/CA

24Vac CAsw 24Vac PVsw

21VDC TS

21VDC DHL 24Vac AFsw

NO-1 C-1 C-2

21VDC RH

J402 Master enable jumper

* See Caution below.

P15: n/a

P14: TS = Aux. temp. sensor or temp. comp.

sensor (4-20 mA input)

temp. comp. sensor

P13: AFsw = Airﬂow proving switch (24vac input) 24vac = Power to airﬂow proving switch DHL = Duct high limit switch/transm. (4-20 mA input) 21vdc = Power to duct high limit switch or transmitter

P12: Programmable relay #1 * See Caution below. C-2 = Common #2 C-1 = Common #1 NO-1 = Normally open #1

P11:

= Ground for demand signal by others

RH = Space RH input (RH transmitter, dew point

transmitter, humidistat, or demand signal by others (4-20 mA or 0-16vdc typical)

21vdc = Power to space RH sensor

OVERVIEW

Notes:

• Programmable relay functions are deﬁned using the display or Web interface during the Setup process.

• For most applications, ﬁeld connections are made at terminals on the board that are surrounded with a white border (P7, P8, P11-P16, P20).

CAUTION

Programmable relay maximum electrical ratings

Programmable relays are rated for 125 VAC, 3 Amp or 30 VDC, 3 Amp maximum. Exceeding these maximum ratings can cause the relay components on the Vapor-logic board to fail.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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OVERVIEW

Display

FIGURE 6-1: USING THE VAPOR-LOGIC DISPLAY

Typical Home screen

The banner at the top of the home screen displays the model number

or name of the humidiﬁer. Go to the

settings menu to give the humidiﬁer

a name and view the serial number.

View the current mode

of the humidiﬁer via the

color indicator. Change

the mode by touching the

edit icon.

Setpoint is the relative humidity percentage that the humidiﬁer tries to maintain in the controlled space. Default: 35% Range: 0-100%

View tank activities information: humidifying, ﬁlling, skimming, ﬂushing, etc.

The time and the date as stored on the Vapor-logic control board.

Space RH is the relative humidity reading in the space that the humidiﬁer serves.

Output indicates graphically the current humidity production of the humidiﬁer. Maximum=humidiﬁer operating at full capacity. For more information touch the output graphic to see the steam production in lbs/ hr and as a percentage of the tanks capacity.

Change the security of the humidiﬁer, backup or restore, access test mode, and other custom settings.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Help: Touch the question mark icon to display help information about the items on that screen.

View all current and past humidiﬁer parameters.

Access all the active alerts that affect the operation of the humidiﬁer.

Page 11

Web interface

FIGURE 7-1: USING THE VAPOR-LOGIC WEB INTERFACE (SETUP SCREEN SHOWN)

Click on a tab label to move to another screen

OVERVIEW

Click on CHANGE to change value

Click here to view alarms

Click here to view messages

Click on label to contract (–) or expand (+) menu item

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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INSTALLATION

Pre-installation Checklist

☐ See Figure 8-1 for ﬁeld terminal block locations. Note

that ﬁeld wiring connection locations on the Vapor-logic board are surrounded with a white border.

☐ See the ﬁgure on the next page for instructions on how

to make wiring connections.

☐ See the wiring drawings and manuals that shipped

with your humidiﬁer.

☐ When making ﬁeld connections, do not route low

voltage wires near line voltage wires. Do not route low voltage wires in the same conduit as line voltage wires.

☐ Humidistat, room/duct transmitter, temperature sensor,

and airﬂow proving switch wiring must be minimum 18-gauge (1 mm2) plenum rated, shielded (screened), twisted pair wire with a bare drain wire for grounding.

☐ Connect the shield (screen) wire [with a length less than

2" (50 mm)] to the shield (screen) ground terminal on the electric subpanel. Do not ground the shield (screen) wire on the humidistat or transmitter end.

FIGURE 8-1: VAPOR-LOGIC CONTROL BOARD DETAIL

Board detail showing white border

Field connection terminals. Terminals P-11 through P-16 have a white border on the Vapor-logic board. This is where you will make most of your ﬁeld wiring connections.

Field connection terminals.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Pre-installation Checklist

P10

P17

P18

P19

SSR/BL Steam

Fill

Drain

SDU

PV/CA

CT/I1CT/I

CT/I

GV1

AI2

Fieldbus

24VACTop

Mid

Low

BT1

LWFPsw

lsw

GV2

BT2GV3

BT3

GV4

BT4

AI1

DSTEEM

SW1

Optional LonTalk® card location

P20

USB

FIGURE 9-1: VAPOR-LOGIC TERMINAL BLOCK DETAIL AND CONNECTION INSTRUCTIONS

Tighten screw after wire is inserted. Maximum torque is 3 in-lb (0.34 N-m)

Remove insulation from end of wire and insert wire here.

Vapor-logic board detail (see also Figure 5-1)

Terminal block plug. Make connections when the plug is attached to the board, or remove for easier access. Pull plug straight up to remove.

INSTALLATION

P11

P12

C-1 C-221VDC

NO-1

P13

DHL

24VAC AFsw

VDC

P14

VDC

TS24

P15

P16

CAsw

VAC

NO-2

PVsw

VAC

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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INSTALLATION

Installation process

The Vapor-logic board is designed to make installation very easy:

• Terminal blocks that require ﬁeld connections are outlined in white.

• Terminal plugs can be removed to allow easy access when inserting wires and tightening screws.

• For most applications, humidiﬁers ship with the control board fully conﬁgured, with drain, ﬁll, and other humidiﬁer components factory-wired to the board, and the display attached to the humidiﬁer and connected to the Vapor-logic board.

SETUP OF VAPOR-LOGIC IS A THREE-STEP PROCESS:

1. Connect field wiring from device to Vapor-logic board. See instructions beginning on Page 12. Note that some connections

listed here may not apply to your system.

• Control input (one required)

• RH or dew point transmitter

• Demand signal by others (4-20 mA or 0-10 VDC typical)

• Room or duct humidistat

• Demand signal by BACnet, Modbus, or LonTalk

• Limit controls

• Airﬂow switch (duct or SDU)

• Duct high limit on-off switch or transmitter

• Temperature compensation transmitter (or auxiliary temperature sensor connected to same terminal)

• Master enable

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Installation process

• Communication connections

• Vapor-logic display

• Ethernet

• Modbus

• BACnet

• LonTalk

• Multiple-tank communication

• Programmable relays

• Area-type, SDU dispersion fans, or steam blowers

2. Complete the Setup process.

See instructions beginning on Page 27.

3. Start up humidifier(s).

See instructions on Page 35.

INSTALLATION

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.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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INSTALLATION

Step 1 – Field wiring:

Control input

Connect control input signal wiring by inserting wires into Terminal P11 (labeled 21vdc, RH, and ground) per the wiring diagram on the next page. Tighten screws.

Allowed inputs at Terminal P11 include:

• RH transmitter or dew point transmitter

Transmitters provide a signal proportional to the RH or dew point being measured. All transmitters provided by DriSteem are two-wire devices using a 4 to 20 mA signal.

• Demand signal by others

Demand signals are sent to the Vapor-logic board from another control system such as a building automation system. These systems have their own RH or dew point transmitters, calculate required humidiﬁer output, and send a demand signal to the humidiﬁer to create steam at a percentage of that humidiﬁer’s capacity. Demand signals are typically 0-10 VDC or 4-20 mA, but may also come from a DDC signal via Modbus, BACnet, or LonTalk.

• A humidistat also delivers a demand signal to the humidiﬁer, but it is not

typically used with Vapor-logic.

Humidistats provide either on-off control or modulating control. DriSteem humidistats are powered by a 24 VDC supply provided by the Vapor-logic control board.

When using modulating control, the signal from a humidistat directly controls the amount of output from the humidiﬁer.

FIGURE 12-1: TERMINAL P11

Terminal P11

Terminal P11:

21vdc = Power to space RH sensor RH = Space RH input (RH transmitter, dew point

transmitter, humidistat, or demand signal by others (4-20 mA or 0-10) VDC input

= Ground for demand signal by others

Notes:

• See Figure 13-1.

• For more information about control input signal types and operation, see "On-off control" on page 14.

• See "Modbus, BACnet, LonTalk interoperability" on page 66 for more information about input signals.

Note:

If you do not know which control components were ordered with your system, contact DriSteem or connect your display to the Vaporlogic board per the instructions on Page 19. Go to the instructions on Page 27 to view system parameters that were factory conﬁgured as ordered.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Step 1 – Field wiring: Control input

FIGURE 13-1: VAPOR-LOGIC CONTROL INPUT WIRING CONNECTIONS

Signal by others

INSTALLATION

0-10 VDC

Vapor-logic

21VDC

Control panel shield GND lug

2-wire #18GA Shield cable

Transmitter

Vapor-logic

Dew point

Control panel shield GND lug

Note: Input resistance on 4-20 mA is 500 ohms

P11 P11 21VDC

2-wire #18GA Shield cable

RH Room or duct

4-20 mA

Vapor-logic

Input resistance 500 ohms

Control panel shield GND lug

Vapor-logic

21VDC

2-wire #18GA Shield cable

Control panel shield GND lug

Note: Input resistance 500 ohms

21VDC

2-wire #18GA Shield cable

21VDC 4-20 mA humidity sensor COM

On-o RH humidistat

% H20

Room or duct

NC contact opens above set point

Key

Room/Duct humidistat

P11

21VDC

2-wire #18GA Shield cable (TYP)

Control panel shield GND lug

Control circuit wiring

Field wiring

Optional factory

Optional field

Break to external connections diagram

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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INSTALLATION

Step 1 – Field wiring: Control input signals

DriSteem offers three control options for all its humidiﬁcation systems controlled by Vapor-logic: 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. The differential is established at a range sufﬁcient to prevent output short cycling. In other words, the humidity level has to fall below set point before the humidistat closes and energizes the humidiﬁer. Once the humidiﬁer is energized, the humidistat stays closed until the humidity is above set point. This creates an operating range that prevents the humidiﬁer from running for very short periods of time.

In applications with a variable output stage, such as a GTS humidiﬁer, the outputs are ramped up until they reach 100%.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Step 1 – Field wiring: Control input signals

INSTALLATION

MODULATING DEMAND SIGNAL CONTROL

With modulating demand signal control, a modulating humidistat or a building automation system sends a signal to the Vapor-logic controller, which then sends a signal to the humidiﬁer to produce a directly proportional steam output. For example, if a humidistat operating between 4 mA and 20 mA sends a 4 mA signal, the humidiﬁer produces no output; a 12 mA signal causes the humidiﬁer to run at 50% of capacity; and a 20 mA signal causes the humidiﬁer to run at 100% capacity.

With a humidistat provided by DriSteem producing this signal, the humidity set point is set at the humidistat. The display then is used for maintaining and troubleshooting the humidiﬁcation system, with humidiﬁer control stemming from the humidistat itself. With a building automation system (BAS) providing the signal, the humidity set point is established by the BAS, and the humidiﬁer responds to the BAS commands.

TRANSMITTER CONTROL

With transmitter control, the Vapor-logic board receives a signal that corresponds to the actual humidity level measured in the space being controlled. (With a transmitter provided by DriSteem, the signal is 4 to 20 mA, which corresponds to 0 to 100% RH). The Vapor-logic controller employs an internal PID loop that uses this humidity measurement along with a user-deﬁned humidity set point to calculate a demand level. This demand level is the level at which the humidiﬁer will run. See “PID tuning” on Page 49.

Calculation of transmitter % RH

% RH =

Example: 12 mA – 4 mA

(mA reading) – 4 mA

16 mA

x 100% = 50% RH

16 mA

x 100%

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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INSTALLATION

Step 1 – Field wiring: Limit controls

Connect wiring for a duct airﬂow proving switch or 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. Tighten screws; maximum torque is 3 in-lb (0.34 N-m). (An SDU is a cabinet fan dispersion assembly.)

See also “Sensor placement” on Page 26.

DUCT HIGH LIMIT SWITCH OR TRANSMITTER

Connect wiring for a duct high limit switch or transmitter by inserting wires into the terminal block plug at P13 (labeled DHL and 21vdc) per the wiring diagram on the next page. Tighten screws.

Note: The duct high limit sensor connected at this location can be an on-off high limit switch, or it can be a duct high limit transmitter with an adjustable high limit set point (4-20 mA input).

See also “Sensor placement” on Page 26.

MASTER ENABLE INPUT

Connect wiring for an enable/disable dry-contact signal by inserting wires into the terminal block plug at P20 (labeled MASTER ENB). Tighten screws. Remove shunt on J402 if wiring is installed.

FIGURE 16-1: TERMINAL P13AIRFLOW PROVING SWITCH

Terminal P13

J402

Terminal P20

Terminal P13: 21vdc = Power to duct high limit switch or

transmitter

DHL = Duct high limit switch/transm. (4-20 mA

input) 24vac = Power to airﬂow proving switch AFsw = Airﬂow proving switch (24 VAC input)

If an enable signal is not being used, jumper the MASTER ENB terminal block plug at P20 or attach the included shunt to the two pin header at J402.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 21

Step 1 – Field wiring: Limit controls

FIGURE 17-1: VAPOR-LOGIC LIMIT CONTROLS WIRING CONNECTIONS Note:

An airﬂow switch must be used in any duct

Airow switch in a duct When using an SDU

Vapor-logic

P13

24VAC

Com

Note: Field wiring required between SDU cabinet terminal strip for SDU blower and air ﬂow switch

Duct air ﬂow switch (N.O.)

Duct air ﬂow switch is in SDU cabinet

P13

24VAC

Duct high limit (not used on SDU or Area-type)

TransmitterOn/off

NC contact opens above set point

Vapor-logic

P13

21VDC

DHL

2-wire #18GA shield cable (TYP)

Control panel shield GND lug

Vapor-logic

P13

21VDC

21 VDC

DHL

4-20 mA High limit sensor Duct mount

2-wire #18GA shield cable (TYP)

Control panel shield GND lug

Duct air ﬂow switch is not used on Area-type

Modulating high limit

humidiﬁcation application. If no airﬂow switch is used, install shunt at P13 (24VAC to AFSW).

INSTALLATION

Temperature compensation transmitter or auxiliary temperature sensor

Temp comp transmitter

Vapor-logic

P14

21VDC

Control panel

Key

Control circuit wiring

Field wiring

Optional factory

2-wire #18GA shield cable (TYP)

Optional ﬁeld

Break to external connections diagram

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 22

INSTALLATION

Step 1 – Field wiring: Limit controls

Connect wiring for a temperature compensation transmitter or an auxiliary temperature sensor by inserting wires into the terminal block plug at P14 (labeled 21vdc and TS) per the wiring diagram on the previous page. Tighten screws; maximum torque is 3 in-lb (0.34 N-m).

Note: Only one device can be connected at P14. You will identify the connected device in “Step 2 – Setup,” beginning on Page 27.

AUXILIARY TEMPERATURE SENSOR

An auxiliary temperature sensor typically monitors duct or space air temperature. Mount the auxiliary temperature sensor wherever you want to monitor temperature. Auxiliary temperature readings are logged to the data log.

TEMPERATURE COMPENSATION TRANSMITTER

A temperature compensation transmitter allows Vapor-logic to reduce humidiﬁer output on cold days, reducing window condensation. Mount the temperature compensation transmitter on the inside of an outside-wall window.

To mount the temperature compensation sensor:

1. See Figure 18-2. Position the temperature compensation sensor control box on a wall adjacent to a window frame facing north or northeast.

2. Place the flat surface of the temperature sensor tip on the lower corner of glass surface.

3. Temporarily hold the sensor tip in place with strips of masking tape.

4. Apply a small amount of clear RTV silicone adhesive over and around the sensor tip (making sure the sensor tip is in contact with the window glass).

5. After adhesive cures, remove masking tape.

6. See the operation section of this manual for more information about the temperature compensation sensor.

FIGURE 18-1: TERMINAL P14

Terminal P14

Terminal P14: 21vdc = Power to auxiliary temperature sensor

or temperature compensation sensor (transmitter)

TS = Auxiliary temperature sensor or

temperature compensation sensor (transmitter) (4-20 mA input)

FIGURE 18-2: TEMPERATURE COMPENSATION TRANSMITTER INSTALLATION

Window frame

Thermostat control wires

Surfacemounted thermostat temperature control box on wall

Typical sensor cord routing

Secure temperature sensor tip to inside surface of window glass using clear RTV silicone adhesive

Doublepane window glass

OM-337

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 23

Step 1 – Field wiring: Communication connections

INSTALLATION

VAPOR-LOGIC DISPLAY

If your display is factory-mounted and connected to the Vapor-logic board, proceed to installing the next device required by your system.

If your display was shipped loose, mount the display in a location so that the provided cable is long enough to connect the display to the Vapor-logic board.

To connect a Vapor-logic display to the Vapor-logic board, insert one end of the provided cable into the Vapor-logic board at Terminal P10 (labeled Display) until you hear a click sound (see also the wiring diagram on the next page). Plug the other end of the cable into the display. This connection provides DC power and communication to the display.

See Caution at right before routing cable.

If a longer display cable is needed, order a replacement cable from DriSteem (see the replacement parts section of this manual), or use a four-conductor straight-through cable or a six-conductor, crossover, twisted pair cable connected to an RJ11 jack.

Note required operating conditions listed on Page 3.

FIGURE 19-2: MOUNT THE TOUCHSCREEN DISPLAY ON A WALL USING THE WALL PLATE

FIGURE 19-1: TERMINAL P10

Terminal P10:

Display

CAUTION

Touchscreen display cable

Maximum cable length is 500’ (152 m).

When routing display cable, route cable away from all power wiring.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 24

INSTALLATION

Step 1 – Field wiring: Communication connections

FIGURE 20-1: VAPOR-LOGIC COMMUNICATION WIRING CONNECTIONS

PC or BACnet IP Ethernet connection

RJ11 cable

Vapor-logic touchscreen display

J1001: Install jumper if multi-tank system and controller is at end of communications link

Previous BACnet

MSTP or Modbus

device

Next BACnet MSTP or Modbus device

Previous LonTalk device

Twisted pair Twisted pair

Previous multitank humidiﬁer

Protocessor module (optional)

LonTalk terminals

Next multitank humidiﬁer

Twisted pair

Next LonTalk device

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 25

Step 1 – Field wiring: Communication connections

INSTALLATION

WEB INTERFACE COMMUNICATION

Utilizing the Vapor-logic Web interface is optional. The humidiﬁer can be operated using the touchscreen 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-logic controller ships with the static IP address of 192.168.1.195. This allows users to locate the Web interface upon start-up. After initial start-up, the IP address can remain as is, be reassigned as another static address, or conﬁgured to Auto Obtain Address, and ﬁnd an IP address on the network using DHCP. See the steps below for information about connecting to the humidiﬁer using the Web interface.

CONNECTING WEB INTERFACE DIRECTLY TO A COMPUTER NOT ON A NETWORK

1. Connect the Ethernet cable.

Insert one end of an RJ45 Ethernet cable into the Vapor-logic board at P9 (labeled Ethernet; see Figure 21-1) until you hear a click sound. Insert the other end of the cable into a computer. Since the Ethernet port on the Vapor-logic board is auto-sensing, either a straight-through or crossover cable will work.

2. Check the current IP address of your computer.

Connecting a computer to the humidiﬁer requires that the computer being used has the same network address range as Vapor-logic. In order to validate this, check the IP address of the computer being used by going to the computer’s Start menu and pull up a search window. In the search box type cmd.

FIGURE 21-1: TERMINAL P9

Terminal P9:

Ethernet

FIGURE 21-2: CHECKING YOUR IP ADDRESS

Vapor-logic default IP address

192.168.1.195

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 26

INSTALLATION

Step 1 – Field wiring: Communication connections

After a system prompt appears, type in ipconﬁg and then hit Enter. The current IP address for the Ethernet adapter Local Area Connection 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-logic’s IP address such that they match each other.

FIGURE 22-1: CHECKING YOUR IP ADDRESS

3. Change the IP address of your humidifier or computer if necessary. a. Change the IP address of the humidiﬁer to work with your computer.

The most straightforward way to change the IP address of the humidiﬁer using Vapor-logic is to use the touchscreen display. Go to Settings/ Communications/IP Addressing on the touchscreen display and change

the IP address such that the ﬁrst three segments of the ﬁrst three segments of the humidiﬁers address match. Make sure the last digit of the IP address is different between the humidiﬁer and the computer. Cycle power of Vapor-logic board for address change to take effect.

b. Change the IP address of your computer to match the humidiﬁer.

Changing the IP address of the computer being used will likely require administrative privileges for your company’s network. Please consult your IT department for this task.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 27

Step 1 – Field wiring: Communication connections

INSTALLATION

4. Connect to the humidifier.

a. Using a computer connected to the Vapor-logic board, 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-logic IP address into the browser’s address bar, and press Enter.

Note: The Vapor-logic default IP address is 192.168.1.195

CONNECTING WEB INTERFACE TO AN ETHERNET NETWORK

See Caution at right before proceeding.

If your network uses DHCP (Dynamic Host Conﬁguration Protocol), use the touchscreen display to navigate to: Settings/Communications/IP Addressing. Select "Auto Obtain Address" and restart the Vapor-logic board.

The most current IP address can always be found by using the touchscreen display to navigate to: Settings/Communications/IP Addressing.

Important: DHCP cannot be enabled from the Web interface; it must be enabled using the touchscreen display.

OTHER COMMUNICATION CONNECTIONS

For BACnet or LonTalk installation instructions, see Page 66. For multiple-tank installation instructions, see Page 74.

FIGURE 23-1: ENTERING THE IP ADDRESS

Enter the IP address in your browser’s address bar

CAUTION

Vapor-logic IP address

Before you connect a Vapor-logic device to a network, please contact your IT department. Given that the Vapor-logic controller ships with a static IP address, it is important to ensure that there is not another device with that same IP address already on the network. Work with your IT department before network connection will help ensure the integrity of the network and the devices on that network

DHCP and IP address

When DHCP is enabled, the server can dynamically change the IP address of Vapor-logic, making existing bookmarks unusable.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 28

INSTALLATION

Step 1 –

PROGRAMMABLE RELAYS (DRY CONTACT)

Field wiring

See “Programmable relay maximum current” in Caution below.

See Figure 25-1. Connect wiring for remote signaling using a programmable relay (dry contact) by inserting wires into the terminal block plug at P12 or P16, per the wiring diagram in Figure 25-1. Tighten screws.

This connection allows remote activation of devices such as fans or signal lights. Output parameters are deﬁned during Step 2 of the installation process.

CAUTION

Programmable relay maximum current

Programmable relay (dry contact) (P12) is rated for 125 VAC, 3 AMP or 30 VDC, 3 AMP maximum. Exceeding this maximum rating can cause the relay component or the Vapor-logic board to fail.

FIGURE 24-1: TERMINAL P12 AND P16

Terminal P16

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Terminal P12

Terminal P16:

NO-2 = Relay 2, normally open PV/CA = Power vent/combustion air control

signal (24 vac output)

SDU = Space Distribution Unit (24 vac output)

Terminal P12:

Programmable relay (dry contact) NO-1 = Relay 1, normally open C-1 = Common 1 C-2 = Common 2

Page 29

Step 1 – Field wiring

FIGURE 25-1: VAPOR-LOGIC PROGRAMMABLE RELAY WIRING CONNECTIONS FIGURE 25-2: TERMINAL P15

Vapor-logic relay #1 Vapor-logic relay #2

Normally open #1

Common #1

Contacts rated 125 VAC/3 AMP or 30 VDC/3 AMP, optional by others

P12

Normally open #2

Common #2

P16

INSTALLATION

Terminal P15

Key

Control circuit wiring

Field wiring

Optional factory

AREA-TYPE AND SDU DISPERSION FANS

Optional ﬁeld

Break to external connections diagram

Connect wiring for Area-type and Space Distribution Unit (SDU) dispersion fans by inserting the wire into the terminal block plug at P16 (labeled SDU). Tighten screws.

OPTIONAL COMBUSTION AIR SWITCH AND POWER VENT

Connect wiring for GTS combustion air switch and/or GTS power vent by inserting wires into the terminal block plugs at P15 and P16. Tighten screws. Remove shunt on J403 (combustion air) or J404 (power vent) if it is installed.

The combustion air switch is on the combustion air damper. The power vent switch indicates airﬂow at the power venter.

Terminal P15: 24vac = Power to combustion air switch CAsw = Combust. air sw. (24vac input) 24vac = Power to power vent switch PVsw = Power vent switch (24vac input)

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 30

INSTALLATION

Step 1 – Field wiring: Sensor placement

HUMIDISTAT AND SENSOR LOCATIONS ARE CRITICAL

Humidistat and sensor location have a signiﬁcant impact on humidiﬁer performance. In most cases, do not interchange duct and room humidity devices. Room humidity devices are calibrated with zero or little airﬂow; whereas duct humidity devices require air passing across them.

Recommended sensor locations (see Figure 26):

A Ideal. Ensures the best uniform mix of dry and moist air with stable

temperature control.

B Acceptable, but room environment may affect controllability, such as when

sensor is too close to air grilles, registers, or heat radiation from room lighting.

C Acceptable. Provides uniform mixture of dry and moist air. If extended time

lag exists between moisture generation and sensing, extend sampling time.

D Acceptable (behind wall or partition) for sampling entire room if sensor is

near an air exhaust return outlet. Typical placement for sampling a critical area.

E Not acceptable. These locations may not represent actual overall conditions

in the space.

F Not acceptable. Do not place sensors near windows, door passageways,

or areas of stagnant airﬂow.

Other factors affecting humidity control

Humidity control involves more than the controller’s ability to control the system. Other factors that play an important role in overall system control are:

• Size of humidification system relative to load

• Overall system dynamics associated with moisture migration time lags

• Accuracy of humidistats and humidity transmitters and their location

• Dry bulb temperature accuracy in space or duct

• Velocities and airflow patterns in ducts and space environments

• Electrical noise or interference

G Best sensing location for a high-limit humidistat or humidity transmitter and

airﬂow proving switch.

FIGURE 26-1: RECOMMENDED SENSOR LOCATION

High limit humidistat or high limit transmitter (set at 90% RH maximum) for VAV applications

Airﬂow switch or differential pressure switch (sail type recommended for VAV applications)

Vapor absorption has taken place Point of vapor absorption

Steam dispersion assembly

Turning vanes

Outside air

Relief air

Damper control

Return air

Window

Air handling

unit

WindowDoorway

8' to 12'

(2.4 m to 3.7 m)

min.

DC-1084

Temperature compensation option: Place a temperature compensation sensor on the lower corner of the inside surface of double-pane window glass on north- or northeastfacing window.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 31

Step 2 – Setup

INSTALLATION

To simplify the ﬁeld-installation process, humidiﬁers are sent from the factory conﬁgured as ordered. However, some settings are unknown at the factory and need to be deﬁned during the setup process using the Settings menu. The Settings menu is also where you make future system setting changes.

To begin the ﬁeld setup process, go to the Settings menu on either the touchscreen display or Setup on the Web interface. Settings menu parameters are listed in Table 29-1. Options and defaults are the same whether viewed from the touchscreen display or Web interface. However, labels may be different on the Web interface.

USING THE TOUCHSCREEN DISPLAY

To access the Settings on the touchscreen display, press the gear icon labeled Settings.

After entering the settings menu, touch a title bar to choose a category. Use the Help icon in the lower right corner to get a description of all the Settings categories.

FIGURE 27-1: USING THE VAPOR-LOGIC TOUCHSCREEN DISPLAY

Typical Home screen

FIGURE 27-2: SETTINGS

FIGURE 27-3: SETTINGS HELP

Press the Settings gear icon to access a list of all changeable system parameters.

Press the Help question mark for a complete description of everything on a screen.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 32

INSTALLATION

Step 2 – Setup

USING THE WEB INTERFACE

Although not required for humidiﬁer operation, the Web interface allows convenient and remote access to Vapor-logic.

See Page 21 for Web interface connection and IP address instructions. Follow the instructions below to complete the setup process.

FIGURE 28-1: USING THE VAPOR-LOGIC WEB INTERFACE ( SHOWN)

Click on a tab label to move to another screen

Click here to view alarms

SETUP SCREEN

Click on CHANGE to change value

Click here to view messages

Click on label to contract (–) or expand (+) menu item

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 33

Step 2 – Setup

Table 30-1: Settings menu

INSTALLATION

Menu item Default value

Control

Control Input Signal -- -- -- --

Control Input Signal (type) -- -- -- -- Type chosen must match hard wired input

RH Transmitter -- -- -- -- 4-20mA room or duct sensor

RH Setpoint 35 0 100 %

RH Offset 0 -20 20 %

PID tuning -- -- -- --

PID band 10 0 50 %

Proportional gain 80 0 1000 --

Integral gain 40 0 1000 --

Derivative gain 0 0 1000 --

VDC Demand -- -- -- --

VDC Settings -- -- -- --

0% output (VDC) 1.0 0.0 Maximum VDC

100% output (VDC) 9.0 Minimum 16.0 VDC

mA Demand -- -- -- -- Current signal by others

mA Settings -- -- -- --

0% output (mA) 4.0 0.0 Maximum mA

100% output (mA) 20.0 Minimum 20.0 mA

Fieldbus -- -- -- --

(See Communications settings) -- -- -- --

Humidistat -- -- -- -- On-off humidistat

Duct RH Limit

Limit Type Switch -- -- --

Switch -- -- -- -- Humidistat (switch) installed in duct

Transmitter -- -- -- -- Humidity sensor installed in duct

High Limit Settings -- -- -- --

Duct HL Setpoint 80 5 95 %

Duct HL Span 6 0 20 %

Duct HL Offset 0 -20 20 %

Not Used -- -- -- --

Minimum

value

Maximum value Units Notes

DriSteem recommends using default values for offsets and PID settings when ﬁrst setting up your humidifer.

Voltage signal by others or modulating humidistat

BACnet, LonTalk or Modbus communicated signal by others

Span (throttle span) is a threshold below the high limit setpoint where the humidifer reduces output but does not turn off until the device high limit set point is reached.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 34

INSTALLATION

Step 2 – Setup

Table 30-1: Settings menu (continued)

Menu item Default value

Fan Dispersion

Fan Type -- -- -- --

Space Distribution Unit

Fan Off Delay 5 1 30 Minutes

Area-Type Fan -- -- -- --

Auxiliary Temperature Sensor

Purpose Not Used -- -- --

Temperature Compensation

Sensor Offset

Temperature Monitoring

Sensor Offset

Not Used -- -- -- --

Programmable Outputs

Dry Contact 1 or 2 -- -- -- --

Contact Behavior

Contact Purpose Default Alerts -- -- --

Default Alerts

View Default Alerts

Selected Alerts

Alert selection

Alert on Low RH -- -- -- --

Alert below RH 50 0 100 --

Steam Yes/No -- -- -- --

Heat On/Off -- -- -- -- A dry contact activates when the humidiﬁer is heating.

Not Used -- -- -- --

-- -- -- --

0 -20 20 °F

0 -11 11 °C

-- -- -- --

0 -20 20 °F

0 -11 11 °C

Normally

open

-- -- -- --

Minimum

value

Normally

open

Maximum

value

Normally

closed

Units Notes

CAUTION

Programmable dry contact maximum current Programmable dry contact (P12 or P16) is rated for 125 VAC, 3 AMP or 30 VDC, 3 AMP maximum. Exceeding this maximum rating can cause the dry contact (relay) component or the Vaporlogic board to fail.

-- Contact action on event

A dry contact activates whenever there is an alert, which does not auto-clear.

A dry contact activates whenever there are alerts selected from the alert selection list.

Contact toggles whenever the space humidity falls below the low RH setting. Adjust the contact behavior to either open or close when the space RH gets low. To use this feature the control input signal type must be an RH transmitter.

A dry contact activates when the tank temperature reaches boiling

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 35

Step 2 – Setup

Table 30-1: Settings menu (continued)

Menu item Default value

Water Management

Automatic Drain Sequence -- -- -- --

Drain Interval Choice

Draining Disabled -- -- -- --

Smart Drain -- -- -- --

Static Drain -- -- -- --

Allowed Drain Times -- -- -- --

Restrict Hour to Drain Yes -- -- --

Hour to Drain 0 (12 AM) 0 23 Hours

Allowed Days All -- -- --

Sunday Yes -- -- --

Monday Ye s -- -- --

Tuesday Yes -- -- --

Wednesday Yes -- -- --

Thursday Yes -- -- --

Friday Yes -- -- --

Saturday Yes -- -- --

Static Drain Settings Model-speciﬁc

Drain Duration Model-speciﬁc 0 120 Minutes

Flush Duration Model-speciﬁc 0 15 Minutes

Skim -- -- -- --

Skim Feature Enabled -- -- --

Skim Duration Model-speciﬁc 0 120 Seconds

End of Season -- -- -- --

End of Season Drain Enabled -- -- --

Idle Time Before Drain 72 1 336 Hours

Smart Drain

Minimum

value

-- -- --

0 2,200,000 lbs

0 1,000,000 kg

Maximum

value

Units Notes

INSTALLATION

When enabled, the humidiﬁer automatically drains and then ﬂushes the tank at user-deﬁned (Static) or automatic (Smart) intervals.

Vapor-logic automatically adjusts the drain usage interval based on calculated water quality.

Humidiﬁer automatically drains and then ﬂushes the tank at user-deﬁned intervals.

Select time of day (24 hour clock) auto drain/ﬂush starts once usage requirement is met

Select days of week auto drain/ﬂush is allowed once usage requirement is met.

Select amount of water to be converted to steam before auto drain/ﬂush starts.

Select number of minutes for drain valve to remain open during auto drain/ﬂush. Default value is based on tank and valve size.

Select number of minutes for ﬁll valve to remain open during ﬂushing.

Water allowed to overﬂow to remove minerals from tank.

If enabled, the humidiﬁer tank drains after the humidiﬁer has been idle for a user-deﬁned time.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 36

INSTALLATION

Step 2 – Setup

Table 30-1: Settings menu (continued)

Menu item Default value

Aquastat -- -- -- --

Aquastat Feature Enabled -- -- --

Aquastat Setpoint

Service Interval -- -- -- --

Service Interval Model-speciﬁc 0 2,200,000 lbs

Service Interval Model-speciﬁc -- 1,000,000 kg

Fill Fault Time-Out -- -- -- --

Fill Fault Time-Out 40 10 250 Minutes Amount of ﬁll time before an alert will occur.

Drain Tempering -- -- -- --

Drain Tempering Feature Enabled Disabled Enabled --

Drain Valve

Test

Test Outputs -- -- -- --

Fill Valve 5 5 5 Seconds

Pulse Fill Valve(s) 5 5 5 Seconds

Drain Valve 10 10 10 Seconds

Fan Control 5 5 5 Seconds

Ignition Module 1 or 2 8 8 8 Seconds

Blower Speed Control 10 10 10 Seconds

Dry Contact 1 or 2 5 5 5 Seconds

Test Run -- -- -- --

Test Run Percent 100 0 100 %

Test Run Time 5 1 30 Minutes

Start/Stop Test Run -- Start Stop --

Communications

IP Addressing -- -- -- --

IP Address 192.168.1.195 0.0.0.0 255.255.255.255 --

IP Mask 255.255.255.0 0.0.0.0 255.255.255.255 --

Gateway 192.168.1.1 0.0.0.0 255.255.255.255 --

Auto Obtain Address No -- -- --

50 40 180 °F

10 4 82 °C

Normally

Closed

Minimum

value

Normally

Closed

Maximum value Units Notes

The minimum aquastat setting prevents tank water freezing. Higher settings keep tank water warm, reducing time required to bring water to boiling after a call for humidity.

Select amount of water to be converted to steam or hours that humidiﬁer runs before service interval is reached.

Enable drain tempering to keep drain water below 140°F (60°C)

Normally

Open

Changing drain valve action requires changing

the drain valve. Not all options available for all models.

Choose “Start” to turn on the output for a few seconds. Choose “Back” if you do not want to test the output at this time. Once the test starts it cannot be cancelled. After the test the mode will change to Standby.

Simulate a demand for steam production when there isn’t one so that the humidiﬁer can produce steam for a speciﬁc amount of time. Humidiﬁer will return to Standby mode.

Automatically obtain an IP address from a network server or assign a static IP address

Use the touchscreen display to access this menu item. This item is not available when using the Web interface.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 37

Step 2 – Setup

Table 30-1: Settings menu (continued)

Menu item Default value

Communication Type Modbus -- -- --

BACnet MS/TP -- -- -- --

Comm Channel 38400 19200 76800 --

BACnet MS/TP Settings

Device Instance 255 0 4194303 --

Max Masters 127 1 127 --

MAC Address 1 0 127 --

Max Info Frames 1 1 127 --

BACnet IP -- -- -- --

Device Instance 255 0 4194303 --

UDP port (47808) 47808 1024 65535 --

Modbus -- -- -- --

Modbus Baud Rate 19200 4800 38400 --

-- -- -- --

Minimum

value

Maximum value Units Notes

INSTALLATION

Modbus Address 99 0 255 --

LonTalk -- -- -- --

Display

Date and Time -- -- -- --

Set Date 1999 -- -- --

Set Time 0:00 0:00 23:59 -- 24 hour clock

Humidiﬁer Info -- -- -- --

Press the edit icon to edit the name of the

Unit Name order-speciﬁc 1 20 Characters

Model order-speciﬁc -- -- -- Displays humidiﬁer model

Serial Number order-speciﬁc -- -- -- Displays humidiﬁer serial number

Factory String order-speciﬁc -- -- -- Displays as-shipped conﬁguration

Current String -- -- -- -- Display current conﬁguration string

Firmware Version -- -- -- --

Display Version -- -- -- --

Language English -- -- --

English -- -- -- --

humidiﬁer. This name is not communicated by BACnet, LonTalk or Modbus.

Displays current ﬁrmware version of Vapor-logic control board and date of ﬁrmware release.

Displays current ﬁrmware version of board internal to touch screen display and date of ﬁrmware release

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 38

INSTALLATION

Step 2 – Setup

Table 30-1: Settings menu (continued)

Menu item Default value

Units inch-pound -- -- --

inch-pound -- -- -- --

SI units -- -- -- --

Idle Time-Out -- -- -- --

Idle Time-Out 5 1 120 Minutes

Brightness -- -- -- --

Adjust Brightness 60 10 100 % Use 100% brightness outdoors.

Clean Screen 30 30 30 Seconds

Capacity Calibration -- -- -- --

Capacity Calibration 100 0 245 %

Security

Require Passcode No No Yes --

Set Passcode 0000 0000 9999 --

Passcode Time-Out 5 1 120 Minutes

Backup / Restore Settings

Backup to USB -- -- -- --

Restore from USB -- -- -- --

Reset to Defaults -- -- -- --

Reset Ignition Counts -- -- -- -- Select this if you want to reset the GTS ignitor counts

Minimum

value

Maximum value Units Notes

Select number of minutes the touchscreen display remains idle before returning to the Home screen.

Touch input will be disabled for 30 seconds so the user can wipe it with a soft cloth.

Changing the capacity calibration setting changes reported, not actual, humidiﬁer output

Enter four digits, numbers only, and deﬁne the timeout period (minutes of inactivity before Vapor-logic reverts to read-only mode). The default passcode is 0000.

Humidiﬁer settings can be backed up to or restored from a USB ﬂash drive

CAUTION These actions cannot be reversed.

Select this if you want to reset all humidiﬁer settings to factory defaults

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 39

Step 3 – Startup

STARTING UP THE HUMIDIFIER

The touchscreen will guide you through common setup procedures with an onscreen wizard the ﬁrst time the humidiﬁer powers up.

1. Press Initial Setup to begin. For step one, verify that all installation and startup checklist items in this manual and in the humidifier's Installation, Operation, and Maintenance manual have been completed.

2. Use the next button to set the date, time and custom humidifier name.

3. Address any alerts that might prevent humidifier operation and press next.

4. Close the wizard by choosing the Home icon and then put the humidifier in Auto mode to start it up.

FIGURE 35-1: START-UP

INSTALLATION

Line up the camera on your device with the QR code you want to scan, and hold the device steady until the app can read the code in front of it.

The QR code will bring you to the downloadable Installation and Operation Manual on dristeem.com.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 40

OPERATION

Using menus and screens

VAPOR-LOGIC DISPLAY HAS THE FOLLOWING MENUS AND SCREENS:

• Home screen

• Submenus:

• Status

• Help

• Alerts

• Settings

The items on the Web interface Diagnostics screen have been moved on the touchscreen. Go to Settings to access test functions, see humidiﬁer conﬁguration info and do a settings backup. Go to Status to Download Data. Use the Alerts icon to view messages.

Vapor-logic Web interface has the following screens:

• Status

• Diagnostics

• Alarms

• Setup

• Help

FIGURE 36-2: USING THE VAPOR-LOGIC WEB INTERFACE (STATUS SCREEN SHOWN)

FIGURE 36-1: TOUCHSCREEN DISPLAY HOME SCREEN

Click here to view alarms

Click here to view messages

Click on a tab label to move to another screen

Click on CHANGE to change value. Note that most system parameters are changed in the Settings menu.

Drag scroll bar to view more of the window

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 41

Home screen (touchscreen display)

OPERATION

Vapor-logic returns to the Home screen on the touchscreen display after a userdeﬁned period of idleness. The Home screen displays the items most frequently viewed: Actual space RH or dew point, RH or dew point set point, tank/system output or steam demand, humidiﬁer mode, and tank activities such as starting up, humidifying, heating, and auto drain.

There is a tank level indicator on the left side of the screen. See the table below for a description of tank level indicators.

To the left of the tank level indicator is a tank temperature display showing actual tank temperature.

CHANGING MODE AND SET POINT

Mode and Setpoint can be changed from the Home screen. Use the edit icons to the right of the value to change the Mode or Setpoint. All other parameters shown on the Home screen are for viewing only and cannot be changed. Go to the Settings menu to change these items.

TANK ACTIVITIES DEFINED

• Disabled: Mode is Standby, waiting for user to change the mode to Auto.

• Probe check: The Vapor-logic control is verifying water probe operation and checking water quality.

• Starting up: The Vapor-logic controller is turning on the heating source.

FIGURE 37-1: WATER LEVEL CONTROL

Top probe

VLC-OM-030

Tank-level icons indicate water level at the water level control probe. See “Water level control” on Page 53.

FIGURE 37-3: FILL ICON

Empty: Water is

below low probe.

Mid probe

Low probe

• Heating: The heating source is ON, but water is not yet boiling.

• Humidifying: There is a demand for humidity and water in tank is boiling; humidiﬁer has output.

• Filling: Fill valve remains open until water reaches operating level.

• Skimming: Fill valve is open to allow water to ﬂow through the overﬂow port, skimming off precipitated minerals.

• Flushing: Fill and drain valve are open to ﬂush tank.

• Idle: Humidiﬁer is waiting for demand.

• Auto Drain: Humidiﬁer is doing a periodic drain to get excess minerals out of the tank.

• Tempering: Fill valve is open during a drain to decrease drain water temperature.

• Draining: User has changed the mode to Drain.

• Stopped: There is an active Red Alert, indicating a fault condition or the humidiﬁer is in Standby mode.

• End of Season Drain: Tank is draining because there has been no demand for a user-deﬁnable time period.

• Foam Drain: Humidiﬁer is doing an immediate drain to get foam out of the tank.

Two thirds full: Water

is between mid and

top probes.

Full: Water is above

the mid probe.

• Keep Cool: Fill and drain cycles operate to cool an overheated humidiﬁer.

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Page 42

OPERATION

Status screen

Using either the touchscreen display or the Web interface, the Status screen is where all humidiﬁer parameters can be viewed. On the touchscreen only Quick Diagnosis provides a way to view if all requirements for safe operation have been met. It reports why a humidiﬁer is not making steam. Access Quick Diagnosis from the Status menu or from the status bar, tank icon, or output icon on the Home screen.

See the tables on the following pages for Status screen item descriptions for both the touchscreen display and Web interface. On the touchscreen use the Help icon to get a description of status items.

FIGURE 38-1: WEB INTERFACE STATUS SCREEN

Drag scroll bar to view more of the window

FIGURE 38-2: STATUS FIGURE 38-3: QUICK DIAGNOSIS

FIGURE 38-4: COMPLETE STATUS

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 43

Status screen

Table 39-1: Status screen

Note: Your system might not have all of the items listed in this table (Pages 39 and 42).

Menu item Default value

Mode Standby -- -- --

Space RH -- 0 100 %

RH set point 35 0 100 %

-- 0 10 VDC

Input signal

-- 0 20 mA

-- 0 100 °F

Dew point

-- -17 37 °C

50 20 80 °F

Dew point set point

10 -6 26 °C

Inlet pressure switch -- No water Water --

Steam demand -- 0 100 % Displays steam demand as a percent of capacity

Steam output -- 0 100 % Displays steam output as a percent of capacity

-- 0 100,000 lbs/hr

Steam production

-- 0 100,000 kg/h

Duct RH -- 0 100 %

Duct HL switch -- Open Closed --

Duct HL set point 80 5 95 %

Duct HL signal -- 0 20 mA

-- -30 275 °F

Tank temperature

-- -34 135 °C

Tank temp signal -- 0 2200 Ohms

-- -20 160 °F

Aux temperature

-- -29 71 °C

Aux temp signal -- 0 26 mA

Minimum

value

Maximum

value

Units Notes

Operating mode of humidiﬁer. Choose from Auto, Standby, or Drain.

• In Auto mode, the humidiﬁer operates normally. All humidiﬁer

components are monitored and controlled. If there is a call for humidiﬁcation, the system reacts.

• In Standby mode, the humidiﬁer is ofﬂine. All humidity control inputs

appear but are not acted upon; however, if the tank temperature falls below the freeze protect set point, the drain valve opens.

• In Drain mode, the automatic drain valve (if so equipped) opens and

the tank drains. All humidiﬁer operation is suspended, and the drain valve remains open until the unit is taken out of Drain tank mode.

• See the Diagnostics section for information about Test outputs and Test

run modes.

OPERATION

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 44

OPERATION

Status screen

Table 41-1: Status screen (continued)

Menu item Default value

Board voltage 24 0 30 VAC

Board temp -- 0 200 °F

High probe signal -- 0 14000 counts

High water probe -- Water No water --

Mid probe signal -- 0 14000 counts

Mid water probe -- Water No water --

Low probe signal -- 0 14000 counts

Low water probe -- Water No water --

Airﬂow switch -- Flow No ﬂow --

Interlock switch -- Open Closed --

Water until drain/ﬂush

Water until service

Blower 1 tach -- 0 7000 rpm Displays rotation speed of Blower 1

Blower 2 tach -- 0 7000 rpm Displays rotation speed of Blower 2

Gas valve 1 -- Open Closed --

Gas valve 2 -- Open Closed --

-- -- 2,200,000 lbs

-- -- 1,000,000 kg

-- -- 2,200,000 lbs

-- -- 1,000,000 kg

Minimum

value

Maximum

value

Units Notes

Displays amount of water to be converted to steam before automatic drain sequence (ADS) can begin

Displays amount of water to be converted to steam before next recommended maintenance service

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 45

Status screen

Table 41-1: Status screen (continued)

Menu item Default value

Combust air switch -- Flow No Flow --

Power vent switch -- Open Closed --

Flue pressure switch -- Open Closed --

Flue temperature

Drain temperature

Temperature switches -- Open Closed -- For ﬂue and tank temperature

-- 32 212 °F

-- 0 100 °C

-- 32 212 °F

Minimum

value

0 100 °C

Maximum

value

Units Notes

OPERATION

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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OPERATION

System alerts

FIGURE 42-1: TOUCHSCREEN

The active Alerts menu displays active system alarms and messages as Red, Yellow and White alerts. Using the touchscreen, go to the Alerts menu by pressing the Alerts icon, or by pressing the Home icon and then the Alerts icon. The Alerts menu displays the alert name, date and time of occurrence and the word Clear. To get troubleshooting information about the alert touch the name of the alert on the alert bar. Touch the word Clear to request Vapor-logic to manually clear the alert when you are sure that the condition that caused the alert has abated. When the alert status changes to cleared, the alert will move from the active Alerts menu to the Alert Log. Using the Web interface, click on the View Alarms link in the upper left corner of any screen to show all alerts, both active and historical.

The Alerts Log displays the alerts name, date and time of occurrence, plus whether the alarm is active, has been cleared by an operator, or autocleared by Vapor-logic. The Alerts Log lists active alerts at the top of the list, followed by cleared alerts in chronological order. The Alerts Log holds 60 alerts. As alerts are cleared, they move down the list below active alerts. When the Alarms list reaches 60 alerts, new alerts add to the top of the list and the oldest, cleared alerts leave the list. Alert information is retained in nonvolatile memory if the Vapor-logic board loses power.

The color of an alert indicates severity. In the active Alerts screen the alerts are ordered Red, Yellow, White. The alert icon will be the color of the highest level of active alert.

• Red: faults requiring immediate attention

• Yellow: environmental conditions preventing unit operation

• White: diagnostic or service messages; events that will or have occurred

that do not prevent unit operation

See Table 44-1 for alarms and their descriptions.

Alert causes and recommended actions are listed in the troubleshooting section in this manual.

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System alerts

FIGURE 43-1: VAPOR-LOGIC WEB INTERFACE ALARMS SCREEN

OPERATION

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 48

OPERATION

System alerts

Table 44-1: Alerts menu

Alert label Description

Red Alerts

Tank temp sensor failed Tank temp sensor has failed. No

Fault occurs at boiling temperature plus 25 °F (13 °C). All units are put into a keep cool state where

Tank overtemp

Space RH signal out of range RH signal is out of range. Yes

ﬁll and drain cycles operate to keep tank cool. First resolve any safety issues, then resolve whatever is causing the problem. Restart the controller to clear the alarm.

Does alert

auto-clear?

Dew point signal out of range

Demand signal out of range Demand signal is out of range. Yes

Duct RH signal out of range Duct RH signal is out of range. Sensor may be faulty. Yes

Aux temp sense out of range Auxiliary temp sensor signal is out of range. Yes

Check water probe Water probe head is dirty, faulty, or miswired. Yes

Faulty water probe Water probe readings are suspect, likely caused by scale on probe. No

Excess ﬁll time Fill valve has been on too long during initial tank ﬁll. Bottom probe is not in contact with water. Ye s

Excess reﬁll time Re-ﬁlling is taking too long. Top probe is not in contact with water. Yes

Tank not draining

Excessive boil time

No SDU airﬂow

Overtemp cutout

Blocked ﬂue Flue pressure switch indicates positive pressure in ﬂue. Burner will not ignite when this fault is active. Ye s

Burner 1 or 2 fault

Ignition mod. 1 or 2 fault

Blower 1 or 2 fault Blower is turning at less than the speciﬁed minimum RPM. Unit not allowed to run. Yes

Gas valve 1 or 2 fault Gas valve is on when it should be off. Unit not allowed to run. Yes

Dew point signal is out of range. Yes

Drain valve has been open for the prescribed amount of time based on the humidiﬁer model, and water is still touching the low water probe.

Humidiﬁer continues to add water when there is no demand, signifying humidiﬁer is continuing to make steam. Humidiﬁer is put into a keep-cool state where ﬁll and drain cycles operate to keep tank water from boiling. First resolve any safety issues, then resolve whatever is causing the problem. Restart the controller, and clear the alarm.

Airﬂow proving switch in the SDU (space distribution unit, a fan-based dispersion assembly) indicates no airﬂow. No steam is produced while alarm is active.

Overtemp cutout circuit has opened. First resolve any safety issues, then resolve whatever is causing the problem. Restart the controller to clear the alarm.

Burner tried one or more times to light and did not succeed. Once this fault is active, Vapor-logic locks out the burner and does not try to light it again until fault is cleared. Other burners can run.

Ignition module has not opened the gas valve. Once this fault is active, Vapor-logic locks out the ignition module and does not try to start it again until fault is cleared. Other ignition modules can run.

Yes

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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OPERATION

System alerts

Table 45-1: Alerts menu (continued)

Alerts label Description

Flue or tank over-temp cutout

Flue sensor out of range Flue temperature sensor signal is out of range. Yes

Drain sensor out of range Drain temperature sensor signal is out of range. Yes

Yellow Alerts

No airﬂow No duct airﬂow. Yes

I-lock open Interlock safety switch is open. Yes

Freeze drain Tank has drained to prevent freezing. Yes

End-of-Season (EOS) active The humidiﬁer is draining or has drained and remains inactive until receiving another call for humidity. Ye s

Clean probes Water level control probes need cleaning. Check tank for cleaning. No

Duct HL trip Duct relative humidity has risen above the high limit set point, or high limit switch has opened. Yes

Insufﬁcient water The low water probe is not in contact with water when there is a demand for humidity. Yes

Master enable open Indicates demand signal is being ignored due to master enable input being open. Yes

The listed ﬂue temperature switch or tank temperature switch has opened. These switches will close after the system has cooled.

Does alarm auto-clear?

Yes

Hot drain water temp The drain temperature has exceeded 145 °F (63 °C) for at least one minute Yes

Excessive foaming

Aux temp sense out of range Auxiliary temp sensor signal is out of range. Yes

White Alerts

Service unit Regularly scheduled unit servicing is due. No

Drain pending Auto drain/ﬂush will occur at next scheduled time. Yes

Temp comp on

Duct HL span

Replace ignitors soon

High ﬂue temp, output reduced

Hot drain water

Boiling temp calibrated

Notes:

• See the “Troubleshooting” section, beginning on Page 80, for alert possible causes and recommended actions.

• The Alerts Log displays alert name, date and time of occurrence, plus ”Active,” ”Cleared” or ”Auto-cleared.”

• Active alerts display ﬁrst in the Alerts Log, followed by cleared alerts (auto-cleared and/or manually-cleared) listed in order of occurrence.

• The Alerts Log displays maximum 60 alerts. Cleared alerts leave the log ﬁrst.

• If an alert event occurs and is not manually cleared or auto-cleared during unit operation, the alert will remain until there is demand and the unit is running.

During normal operation top probe indicated "water", which was interpreted as foam. Foam drain will occur.

Humidiﬁer output has been reduced because temperature compensation sensor reads a temperature on the inside-pane of an outside-wall window that could cause condensation.

Duct high limit transmitter has entered the throttle span range and is approaching duct high limit set point.

Replace ignitors soon. Ignitors have been cycled to 80% of their expected life or there are other indications the ignitors may be worn out.

Flue temperature is close to exceeding rated value. The output will temporarily be reduced by 50% to allow the ﬂue to cool.

The drain temperature has exceeded 145°F (63° C) for one minute. The drain tempering device may not be working properly.

indicates actual humidiﬁer boiling temperature at time of reading. Ths reading is taken after power-up by the tank sensor at the time of ﬁrst steam creation.

Yes

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 50

OPERATION

Status LED (Vapor-logic control board)

STATUS LED (VAPOR-LOGIC CONTROL BOARD)

The Vapor-logic control board includes a diagnostic Status LED that shows multiple humidiﬁer control conditions. The Status LED blinks in a 3-stage cycle over approximately four seconds. The Status LED is always “blinking”. It will be easy to see that the board is powered and operating because, at a minimum, it is running the Status LED.

The blinking will be in a 3-stage cycle starting from being dark with the LED brightness illuminating up to the ﬁrst stage of indication.

Timing of the 3-stage cycle will be over approximately four seconds.

See "Vapor-logic control board LED indicators" on page 47.

FIRST BLINK: FAULTS

A yellow ﬁrst LED blink indicates there is one (or more) of four conditions present that will prevent the humidiﬁer from operating. These conditions can be viewed as a message through the Vapor-logic display:

1. The interlock switch on cabinet or tank is open (connected at ISW input on control board).

2. There is no airflow.

3. The duct humidity high limit has been exceeded.

4. The Master Enable input is open (P20 input on control board).

A red Status LED blink indicates there is an active fault preventing the unit from operating. These conditions can be viewed as alerts through the Vapor-logic display.

If the ﬁrst Status LED blink is blue, the unit is set to Standby or Test mode. Unit must be set to Auto Mode to enable operation. The Mode can be set through the touchscreen, or through an associated building automation system (BAS).

A green Status LED blinks Auto mode with no faults.

SECOND BLINK: COMMUNICATION STATUS

For single-tank installations, green or red indicates communications status to the associated touchscreen display.

If the humidiﬁer is part of a multi-tank system, Green indicates communications is occurring between the controller and other controllers and/or the touchscreen display. Red indicates there is no communications occurring. If the Status LED is red, check the communications wiring between the master and other slave units.

THIRD BLINK: HUMIDIFICATION DEMAND

Without humidiﬁcation demand the humidiﬁer will not run, and the third blink in the Status LED sequence will be blue. Demand is created through a connected humidistat, humidity transmitter, or through an external source such as building automation system (BAS). When there is a call for humidiﬁcation (demand), the third Status LED blink sequence will be green.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Status LED (Vapor-logic control board)

VAPOR-LOGIC CONTROL BOARD STATUS LED (CONTINUED)

Table 47-1: Vapor-logic control board LED indicators

First Blink Second Blink Third Blink

LED Indicator

Faults Communications status Demand/call for humidiﬁcation

OPERATION

Green Auto mode: no faults

Yellow

Red

Blue

Auto mode: active message preventing unit from running

Auto mode: active fault preventing unit from running

Standby or test mode: unit will not run

Touchscreen display is attached and working

— —

Touchscreen display is not communicating with controller

— No humidiﬁcation demand present

Humidiﬁcation demand is present

—

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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OPERATION

Status LED (Touchscreen)

STATUS LED (TOUCHSCREEN)

The LED on the Vapor-logic touchscreen is located on the front, just below the active touch area. It remains solidly lit as long as there is power (even when the Touchscreen is in sleep mode). The color indications are similar to those for the Vapor-logic LED but it does not have a three blink sequence.

Table 48-2: Touchscreen LED indicators

LED Indicator Mode Demand/call for humidiﬁcation

Green Auto mode: no faults Humidiﬁcation demand is present

Yellow Auto mode: active alert preventing unit from running —

Red Auto mode: active fault preventing unit from running —

Blue Standby mode or auto mode No humidiﬁcation demand present

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 53

PID tuning

OPERATION

When your system has a humidity or dew point transmitter, you can adjust and control the set point through the touchscreen or Web interface using a proportional, integral, and derivative (PID) control loop.

IMPROVES HUMIDIFIER RESPONSE TIME

With a PID loop, you can tune your system for maximum performance using the proportional (Kp), integral (Ki), and derivative (Kd) gain terms.

Kp = Proportional gain factor Ki = Integral gain factor Kd = Derivative gain factor

These gain factors work in the following way: The overall demand in a PID system is made up of three distinct parts—the proportional, the integral, and the derivative. Each of these parts is calculated and then multiplied by its corresponding gain factor. These gain factors are the setup variables you have access to from the Settings menu. By making a gain factor larger, you increase its overall inﬂuence on system demand. Once each PID component is multiplied by its gain factor, all three terms are added together to determine the overall demand percentage.

THE PROPORTIONAL TERM

The proportional term is the difference between the RH set point and the actual humidity multiplied by the proportional gain. For example, with a Kp of 80 and the actual humidity 5% below the RH set point, the proportional contribution to the demand is: 5 × 80 × 0.085 = 33% (the 0.085 is an internal scalar used to increase the usable span of Kp).

Settings menu

The Settings menu is where system parameters can be changed. This menu is used primarily during initial installation, but can also be used for making changes or adjustments as needed during operation. Note that while all parameters can be changed, many changes also require a corresponding hardware change. Vapor-logic ﬁrmware will warn you of this during the setup process.

See Setup, beginning on Page 27, for more information about the Settings menu.

There is a problem with using only proportional gain to control the RH. In almost all applications there is some constant load on the humidiﬁer just as there is a constant load on heating equipment. If the proportional term is all that is used, the actual humidity must be less than the set point for the humidiﬁer to be on.

What happens is the humidiﬁer ﬁnds a happy medium where the actual humidity is something less than the set point, which allows the humidiﬁer to continue to run. This difference between the set point and the actual running humidity level is called the droop. This droop can be corrected using the next term, the integral.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 54

OPERATION

PID tuning

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. This accumulated error is multiplied by the integral gain to create the integral term. The integral gain affects how fast the humidiﬁer corrects a droop condition. The higher the integral gain (Ki), the faster the reaction. (An integral gain of zero disables this variable and allows the unit to run on the proportional term only.)

With an integral gain term greater than zero and an actual humidity below set point, the demand increases slightly with each update. If the actual humidity is above set point, the demand decreases slightly. The amount it increases or decreases depends on the magnitude of the RH error and the integral gain value. The closer you are to the set point, the smaller the addition or subtraction.

When looking at this control scheme, an interesting pattern occurs. The total demand signal for the humidiﬁer is the sum of the proportional part, the integral part, and the derivative part. As the actual humidity approaches the set point, the integral portion makes up the majority of the demand, and the proportional part makes up very little. Once the set point is reached and the unit stabilizes, the entire demand is made up of the integral part because the proportional part is zero.

If the actual humidity goes over the set point, the integral term starts to decrease. In addition, the proportional term becomes negative and actually starts to subtract from the total system demand. These two terms work in conjunction with each other to bring the humidiﬁer back to set point.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 55

PID tuning

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.

If the actual measured RH is below set point and is falling, the derivative term adds to the demand in anticipation of the need to get the demand up faster and start climbing toward set point.

If the actual measured RH is above set point and falling, the derivative term adds to the overall demand in anticipation of the approaching set point. It generally is used to increase damping and, in some cases, improves the stability of the system.

However, in the majority of control situations, the derivative term is not needed and is simply set to zero. The proportional term and integral term provide tight, accurate control without the addition of the derivative term.

OPERATION

PID BAND

The last user-controlled term in the PID equation is the PID band. The PID band deﬁnes the range of measured RH values (°F/°C for dew point control) where the PID loop is in operation. The PID loop is in operation when the measured RH is in the range of (RH set point – PID band) to (RH set point + PID band). If the measured RH is below the PID band, the PID calculations are suspended and the demand is set to 100%. Conversely, if the measured RH is above the PID band, the demand is set to 0%.

For example, if starting with an RH set point of 35% and a PID band of 10%, the PID loop operates when the actual humidity is in the range of 25% to 45%. If the actual humidity is lower than 25%, the humidiﬁer is full on. If the actual humidity is above 45%, the humidiﬁer demand is 0%. The PID band aids in speeding the response time of the system. It allows the RH to get somewhat close to the set point and then lets the PID loop precisely control the RH when it is within the PID band. The default value for the PID band is 10%.

Large spaces where the humidiﬁcation system inﬂuences the RH very slowly typically beneﬁt from a smaller PID band. Small spaces where the humidiﬁcation system can quickly inﬂuence the RH typically beneﬁt from a larger PID band. Rarely should it be set to less than 10%.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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OPERATION

PID tuning

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%. When the humidiﬁer is operating at steady state, make sure the RH does not go outside the PID band. The intent of the PID band is to quickly get the RH into a controllable range. To increase or decrease the effect of the proportional term on system performance, adjust the proportional gain (Kp).

However, for the majority of systems, the factory default setting of 80 is sufﬁcient. Generally speaking, a large integral gain (Ki) quickens the system response but may cause it to oscillate and become unstable. A small integral gain yields tighter, more stable control at the expense of a long response time.

These principles can be applied in the following examples: If a system eventually reaches the desired RH level but takes a long time to do so without overshooting the set point, faster response can be achieved by increasing the integral gain. If the measured RH oscillates above and below the set point numerous times before ﬁnally reaching set point, decrease the integral gain.

Typically, if a large adjustment is made to the integral gain, better response is achieved by decreasing the magnitude of the change. Then, modify the proportional gain slightly in the same direction the integral gain was changed. RH history data, available for download from the Diagnostics menu, can aid when doing PID loop tuning.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 57

Universal water level control

OPERATION

The Universal Water system allows the Vapor-logic controller to identify the water type using a three-probe assembly. All water types and conductivities work with the universal water system. The user does not need to select a new water type or change hardware to change water types. Additional valves and Vapor-logic algorithms measure and control the water level for optimum efﬁciency and low water safety conditions. Vapor-logic automatically provides a steady output while maintaining the water level between the bottom and middle probes.

Water must remain in contact with the probe surface for three seconds for Vapor-logic to determine that the water is at the probe’s level. Conversely, water must stay out of contact with the probe surface for three seconds for Vapor-logic to determine that the water is below the probe’s level. This three-second delay ensures that turbulence does not cause an incorrect level reading. If the water level falls below the low-water cutoff probe for a time period determined by Vapor-logic, heating outputs are disabled; this provides low-water protection for the heating outputs. If Vapor-logic detects water on the top probe Vapor-logic will assume there is foam and a foam drain will start immediately.

The humidiﬁer will periodically perform probe checks to insure that the probes are being read accurately and to determine the quality of the incoming water. The humidiﬁer status on the home screen will show “Probe Check”. After a probe check the humidiﬁer will adjust the Smart Drain usage interval used for the automatic drain sequence. If the signal from the probe assembly begins to deteriorate, the “Clean probes” or “Check Water Probe” message appears in the Alert log. Once the probe system reaches its maximum usable life, the humidiﬁer shuts down and the user gets a “Faulty Water Probe” active alert.

CAUTION

Chloride corrosion

Damage caused by chloride corrosion is not covered by your DriSteem warranty.

Chloride corrosion can result from a variety of causes, including, but not limited to

• Improper water deionization processes

• Improper water softening processes

• Humidiﬁer’s supply water

FIGURE 53-1: WATER LEVEL CONTROL

Water level is controlled electronically using three probes

Overﬂow/foam detection

Full

Low

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

VLC-OM-030

Page 58

OPERATION

Automatic drain sequence, all water types

Vapor-logic uses an automatic drain sequence (ADS) to reduce mineral accumulation in the tank and drain line which decreases tank maintenance.

Automatic draining and ﬂushing parameters are deﬁned in the water management section of the Settings menu:

• First, automatic draining and ﬂushing must be enabled.

• Second, the amount of water converted to steam (Usage) before an automatic drain sequence begins must be deﬁned in Settings/Water Management/Automatic Drain Sequence.

• With a Smart Drain interval type, Vapor-logic will dynamically change

the usage between drains depending on detected water quality. This allows for less frequent drains for clean water and more frequent drains for water with many dissolved solids. (Smart Drain is the default usage choice).

• With a Static interval Vapor-logic always uses the same usage interval.

The default value is model-speciﬁc and calculated based operating 100 hours at 100% capacity. The user can change the usage value to get more or less frequent drains.

• Third, days of the week when the automatic drain sequence can occur must be deﬁned. This means that once the Usage requirement is met, the automatic drain sequence can occur on the ﬁrst allowed day (allowed days default is all days).

• Last, time of day when the automatic drain sequence occurs must be deﬁned (default value is midnight).

For example, if you use factory static default settings for the automatic drain sequence, the ﬁrst automatic drain sequence will occur at midnight on any day of the week once the model-speciﬁc usage requirement has been met. If you want to change these settings, go to the water management section of the Settings menu.

For RO/DI water DriSteem recommends enabling the automatic drain sequence with the Smart Drain option. The humidiﬁer will drain very infrequently but just enough to protect the tank from aggressive water.

Sequence of operation for the automatic drain sequence: ADS starts by opening the drain valve to empty the tank. When the drain duration ends, the ﬁll and drain valves remain open to ﬂush the tank. When the ﬂush duration ends, the automatic drain sequence is complete and the humidiﬁer resumes normal operation. During all of these actions the home screen will display a tank status of “Auto Drain”. The default drain and ﬂush durations are modelspeciﬁc and can be adjusted in the water management section of the Settings menu.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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Options and features

FOAM DRAIN

When foam reaches the top probe of the water probe assembly Vapor-logic initiates an immediate Foam Drain. The humidiﬁer is not allowed to produce steam with foam in the tank because the water detection system may read inaccurately, causing a safety issue. The Foam Drain sequence will drain the foam, ﬂush the foam out, reﬁll the tank and then restart. The Foam Drain feature cannot be disabled. This feature is similar to the Auto Drain for the Automatic Drain Sequence but it does not wait for Usage or allowed time and day requirements.

DUCT HIGH LIMIT SWITCH OPTION

When a duct high limit option is ordered, DriSteem 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.

The duct high limit switch prevents duct saturation by turning off the humidiﬁer when reaching the device set point. When this occurs, a “Duct HL trip” message appears in the Alert Log of the touchscreen and a message appears in the Messages Log and autoclears when duct RH drops below the duct high limit set point.

OPERATION

MODULATING HIGH LIMIT TRANSMITTER OPTION

The modulating high limit transmitter operates in conjunction with the room/ duct controlling transmitter or demand signal through the Vapor-logic control system to prevent excess humidiﬁcation in the duct. Vapor-logic starts lowering the humidiﬁer output when the duct relative humidity is within a user-deﬁned percentage (default is 5%) of the duct high limit set point. This value is called the duct high limit span and is deﬁned during Setup.

When duct relative humidity enters this range, a “Duct HL span” alert appears in the Alert Log of the touchscreen and a message appears in the Message Log of the Web interface. If necessary, the reduction of the humidiﬁer output continues until maximum high limit set point is reached, shutting off the humidiﬁer completely. If this occurs, a “Duct HL trip” alert appears in the Alert Log of the touchscreen and a message appears in the Message Log of the Web interface.

When the high relative humidity starts to decrease in the duct, Vapor-logic slowly starts to increase steam production. When the duct relative humidity decreases to greater than the deﬁned percentage below the duct high limit set point, the control transmitter or signal by others demand signal is restored as the primary controller, returning the control system to normal operation, and the messages in the Message Log of the Web interface and active alerts automatically clear.

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OPERATION

Options and features

TEMPERATURE COMPENSATION CONTROL OPTION

When selected as an option, DriSteem provides a temperature compensation transmitter. The temperature compensation transmitter continually monitors interior window glass temperature and transmits this temperature to Vapor-logic.

Vapor-logic assumes a 70 °F (21 °C) room temperature and uses the glass temperature and the RH in the space being controlled to calculate the dew point (°F or °C) for the space.

If the window temperature falls below the dew point, Vapor-logic automatically decreases the RH set point so moisture does not form on windows. The Home screen displays the modiﬁed RH set point, and an alert of "Temp Comp On" appears in the Alert Log of the touchscreen and a message appears on the Web interface, denoting that temperature compensation has taken control of the RH set point. When the interior window glass temperature rises above the dew point, Vapor-logic restores system control to the normal RH set point for the space, and the “Temp comp on” message and alerts automatically clears.

The temperature compensation control option is available only when the system is equipped with an RH transmitter. It is not available when a remote humidistat, dew point transmitter, or building automation system is used to control the humidiﬁer.

The transmitter provided with Vapor-logic is calibrated for –20 °F to 160 °F (–29 °C to 71 °C) with output from 4 to 20 mA. For example, a temperature reading of 70 °F (21 °C) should produce a measurement of 12 mA. You can calibrate the sensor by adjusting the offset in the auxiliary temp sensor section of the Status menu of the touchscreen or Diagnostics menu of the Web interface menu.

AUXILIARY TEMPERATURE SENSOR OPTION

When selected as an option, DriSteem provides a temperature sensor for monitoring temperature in a duct or space. Temperature from this sensor can be viewed from the Status menu (“Aux temperature”).

TANK PREHEAT FEATURE

The tank preheat feature heats the water in the tank to near boiling to allow a rapid response to a demand signal. If the tank is cold when a small demand signal is present, the Vapor-logic controller overrides the demand signal and heats until the tank temperature increases to the boiling point. At this point, control is returned to the original demand signal.

Preheating allows the system to respond quickly to small demand requests. When preheating, the word “Heating” appears on the Home screen.

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Options and features

AQUASTAT SET POINT FEATURE

The aquastat set point is the minimum tank temperature the Vapor-logic controller maintains when there is no call for humidity or when safety circuits are not satisﬁed (e.g., high limit or airﬂow proving switch). The aquastat set point is adjusted through the water management section of the Settings menu. This feature shortens the tank preheat time, providing a rapid response to a call for humidity.

For example, if the aquastat is set at 180 °F (82 °C) when a call for humidity occurs, the tank only needs to warm up 32 °F (18 °C) to reach the boiling point. However, if the aquastat is at its minimum default setting of 40 °F (4 °C) and the tank is in an average-temperature occupied room, when a call for humidity occurs, the tank needs to warm up from room temperature to the boiling point before producing steam. When an aquastat call is heating the tank, the word “Heating” appears on the Home screen. Aquastat heating will occur with high-limit and airﬂow alarm conditions.

OPERATION

FREEZE PROTECTION

Freeze protection is similar to aquastat operation with some exceptions. The freeze protect set point is ﬁxed at 40 °F (4 °C). Its purpose is to prevent the tank from freezing in cold environments. Unlike aquastat, if a condition exists that prevents the heaters, burners, and valves from ﬁring (such as an alarm, an external interlock switch is open, or the humidiﬁer is in Standby mode), instead of remaining idle, the controller switches to manual drain run mode and the tank drains to prevent freezing. Change mode to Auto to resume operation.

When the tank is heating to prevent freezing, the word “Heating” appears on the Home screen. When the tank is draining or has drained to prevent freezing, the “Freeze drain” message appears in the Messages Log of the Web interface and an alert appears in the Alert Log of the touchscreen.

FAN-BASED DISPERSION OPERATION

If your humidiﬁer is equipped with a Space Distribution Unit (SDU) or an Area-type fan, it is enabled after the Vapor-logic controller receives a call for humidity and the tank water is approaching boiling temperature.

When the humidiﬁer no longer receives a call for humidity, it stops heating and the SDU or Area-type fan continues to run for the time delay period (as deﬁned in the fan-based dispersion section Settings menu).

Note: The Fan Dispersion option appears in the Settings menu of the touchscreen only if the humidiﬁer was originally ordered with fan or SDU dispersion. To change to duct dispersion, consult with DriSteem technical support and use the Web interface to choose Fan Dispersion.

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OPERATION

Options and features

SENSOR OFFSETS

All external transmitters shipped with Vapor-logic can be ﬁeld calibrated from the Settings 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.

SKIM TIMER

The Vapor-logic controller has a skim timer. This timer is activated at the end of each probe check. The timer keeps the ﬁll valve open (for a user-determined amount of time) to skim minerals off the water surface. The skim time is adjusted through water management in the Settings menu.

END-OF-SEASON DRAIN

If there is no call for humidity for a user-deﬁned time period, the humidiﬁer performs an end-of-season (EOS) drain where the drain valve remains open for ten hours to allow the tank to drain and then closes. If the humidiﬁer receives a call for humidity after the ten-hour end-of-season drain-down period has begun, the controller stops the end-of-season draining, the tank reﬁlls, and the humidiﬁer resumes normal operation. The user-deﬁned inactivity time period (idle time) is deﬁned in the end-of-season drain section of the water management settings menu.

SERVICE INTERVAL

The Vapor-logic controller tracks the amount of water converted to steam by the humidiﬁer and the number of hours the humidiﬁer runs. When the amount of steam or hours of run time exceeds the user-deﬁned service interval (pounds, kilograms, or hours, adjusted in the Settings menu), “Service unit” appears in the Messages Log on the Web interface or in the Alert Log on the touchscreen display. On the touchscreen display Status and Quick Diagnosis screens the user will also see the words Service Due: Yes.

The humidiﬁer continues to operate after the alert appears. The alert notiﬁes the user that the service interval was reached and the humidiﬁer should be cleaned. The alert remains active until the user manually clears it, indicating that the cleaning was completed.

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Options and features

SETTING DATE AND TIME

The Vapor-logic 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 Settings menu.

Note: Verify the date and time settings after every ﬁrmware upgrade.

BATTERY BACKUP, NONVOLATILE MEMORY

If there is a power outage, date and time settings will be saved. Alerts, unit conﬁguration, and usage timers will remain in nonvolatile memory indeﬁnitely. When the battery is getting low a "Check Battery" alert will appear in the Alert Log on the touchscreen and in the Message Log of the Web interface.

SECURITY/PASSWORD

To control who can change Vapor-logic settings, enable the security function and deﬁne a password in the Settings menu. Enter four digits, numbers only, and deﬁne the time-out period (minutes of inactivity before Vapor-logic reverts to read-only mode). The Web interface and the touchscreen can have separate passwords.

OPERATION

Important: Write down the password and keep in a secure location.

PASSCODE FOR TOUCHSCREEN DISPLAY

On the touchscreen display choose a passcode immediately following the choice of Require Passcode: Yes. If security is required and the passcode was not set, try the Vapor-logic default of 0000. If a passcode has been set and then forgotten, contact DriSteem Technical Support.

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OPERATION

Options and features

DOWNLOADING HISTORICAL DATA

Vapor-logic acquires data at a default interval of once a minute and retains it for 21 rolling days or 30,000 data points, including the most recent 60 alerts. Download the data to a USB storage device and then view with a spreadsheet program such as Microsoft Excel or Google Sheets. The data, available for download and sorting, contain the details shown in Table 60-1.

Go to the Download data section of the Diagnostic screen for download options.

Table 60-1: Sample of data log downloaded and sorted

Time

1/26/10 9:36 AM 23 0 212 567019018 421066 23

1/26/10 9:37 AM 23 0 212 567021350 421068 23

1/26/10 9:38 AM 23 0 211 567023681 421070 23

1/26/10 9:39 AM

1/26/10 9:40 AM 23 0 210 567028344 421073 23

1/26/10 9:41 AM 23 0 211 567030677 421075 23

SpaceRH or

Demand

Aux Temp

(°F)

Tank Temp

(°F)

BTU’s used

Lbs

steam

Output

(%)

Alarm/

Msg

low water cutout

Note: Data is saved to nonvolatile memory

every 60 minutes. If unit power is lost, up to 60 minutes of data could be lost.

Alarm/Msg

Status

Auto cleared message

Current Conﬁg:

xx##xx#x###xx

— —

Factory Conﬁg:

xx##xx#x###xx

1/26/10 9:42 AM 23 0 212 567033008 421077 23

1/26/10 9:43 AM 23 0 212 567035339 421079 23

1/26/10 9:44 AM Unit Start

To sort data (as shown above) with alerts listed in the order they occurred:

1. Import the data into a spreadsheet program, such as Microsoft Excel.

2. Set the Time column to be displayed in the date-time format.

3. Sort all rows by “Time” in ascending order.

BACKING UP AND RESTORING SETTINGS

Vapor-logic settings can be backed up to and restored from a USB ﬂash drive. The backup ﬁle contains all information relative to the humidiﬁer, including ﬁrmware, user settings, model number, serial number, and the conﬁguration string.

Backup ﬁles use the serial number in the backup ﬁle name so that the ﬁle is easily matched to a particular humidiﬁer.

Auto cleared message

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 65

Firmware updates

To create a backup ﬁle:

1. Insert a USB flash drive into the USB port on the Vapor-logic board.

2. Go to Settings/USB backup-restore/Back up settings

3. Select Yes. The display will prompt you when backup is complete.

To restore from a backup ﬁle:

1. Insert a USB flash drive with that humidifier’s backup file into the USB port on the Vapor-logic board.

2. Go to Settings/USB backup-restore/Restore settings.

3. Select Yes. Note that the serial number of the humidifier and backup file must match to complete the restore process.

DOWNLOADING FIRMWARE UPDATES

The Vapor-logic controller and the touchscreen display ﬁrmware can be ﬁeld upgraded to the latest ﬁrmware version via the USB port on each device. Firmware updates are available at no charge on the DriSteem website. One download from the DriSteem web site will give you all ﬁles needed to update both Vapor-logic and the touchscreen display.

OPERATION

To update your Vapor-logic controller and/or touchscreen display to the latest ﬁrmware version, perform the following procedure:

1. Navigate to www.dristeem.com.

2. Go to Support & Literature on the site navigation menu.

3. Select Technical Support.

4. Click on firmware updates.

5. Navigate to Vapor-logic6 and click version download link.

6. Plug a reliable USB flash drive into a USB port on your computer, and prepare the flash drive as follows:

a) Move or delete all ﬁles from the drive. b) Make sure it has at least 16 MB of free space. c) Make sure it is not partitioned into multiple drives.

7. Perform the procedure in Table 62-1.

8. Repeat the procedure in Table 62-1 to get the Vapor-logic6 touchscreen display update files. They can be placed on the same USB stick.

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OPERATION

Firmware updates

Table 62-1: Downloading Vapor-logic firmware updates

1. Click the link shown to the right on the Vapor-logic ﬁrmware updates page of

www.dristeem.com.

If a security window appears, click the Save button.

Note: Your browser and operating system might be set up differently, the

screenshots are provided as a general road map.

2. When prompted for a save location, choose your desktop.

3. Click the Save button.

4. On your desktop, double-click the new vl6_update.exe ﬁle.

5. If a Security Warning appears, click the Run button.

A WinZip Self-Extractor window appears.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Continued

Page 67

Firmware updates

Table 62-1: Downloading Vapor-logic 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.

OPERATION

A WinZip window opens to conﬁrm that the ﬁrmware update has been

unzipped.

8. Click the OK button.

9. Click the Close button to close the WinZip Self-Extractor window.

10. Open your USB ﬂash drive. Conﬁrm that it contains a folder named

vl6_update_xx.xx.xx (where x represents the version number) and that it has today’s timestamp.

11. Remove the USB ﬂash drive from your computer.

12. Proceed to “Installing ﬁrmware updates” on Page 64.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

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OPERATION

Firmware updates

INSTALLING FIRMWARE UPDATES

1. Place the humidifier system in Standby mode.

WARNING

2. IMPORTANT: To prevent static damage to the USB flash drive and

controller, ground yourself by briefly touching the humidifier’s electrical subpanel before touching any part of the controller board or doing Step 3. See the Warning.

3. With the board powered, insert the USB flash drive loaded with the unzipped firmware update folder into the Vapor-logic board USB port.

CAUTION

Do not remove USB ﬂash drive or cycle power early

During Steps 4 and 5, do not remove the USB ﬂash drive or cycle the power until the signal occurs as explained in Step 5.

4. The update process begins immediately and takes up to 1 minute. Wait for the relay on the Vapor-logic board to begin clicking continuously. The water probe LEDs on the board will blink occasionally during the update process.

5. When the relay on the Vapor-logic board begins to click continuously, remove the USB flash drive from the Vapor-logic board USB port.

When the USB ﬂash drive is removed, the Vapor-logic controller and

display reboot with the updated ﬁrmware.

6. Verify the update by checking the Vapor-logic firmware version as follows:

Electric shock hazard All circuits must be energized for this ﬁrmware update procedure. Contact

with energized circuits can cause severe personal injury or death as a result of electric shock.

To prevent shock when grounding to the electrical subpanel, touch the subpanel along its edge, away from wires and components.

a. Select Settings in the touchscreen display Main menu. b. Select Humidiﬁer info. c. Scroll down to Firmware version.

The ﬁrmware version displayed should match the version number of the

vl6_update xx.xx.xx folder on the USB ﬂash drive (where x represents the version number).

7. With the board still powered: a. Insert the USB stick with the unzipped ﬁrmware into the touchscreen

display. The display will reboot.

b. Go to Settings/Display/Humidiﬁer Info and verify that the display

ﬁrmware version has been updated.

8. Verify humidifier operation, and return it to service.

Not all USB drives perform equally. If a USB ﬂash drive fails to update the

Vapor-logic ﬁrmware, perform the procedure with a different USB ﬂash drive.

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Test outputs and test run

TEST OUTPUTS

When completing an installation or repair, cycle all outputs, such as ﬁll valve, drain valve, etc., to verify operation. Go to the test outputs section of the Settings menu and scroll through each connected output to verify operation. During testing, the humidiﬁer mode changes to Standby and the tank status changes to Test.

TEST RUN

Vapor-logic has a test run capability to conﬁrm system functionality. This capability allows a technician to simulate a demand for steam production when there isn’t one (such as when performing routine maintenance). To conﬁrm functionality, go to the test run section of the Settings menu. Set system demand percent and set test run time duration. During testing, the humidiﬁer mode changes to Standby and the tank status changes to Test.

Table 65-1: Test outputs and test run

Test outputs

Menu item Default value

Minimum

value

Maximum

value

Units Description

OPERATION

Fill valve -- -- Cycles output to verify operation.

Pulse ﬁll valve -- --

Drain valve -- --

Cycles output to verify operation.Fan control -- --

Dry contact relay 1 or 2 -- --

Ignition module 1 or 2 -- --

Blower speed control -- -- Tests both blowers,

Test run*

Test run percent 0 0 100 % Set demand percent value between 0 and 100 to test.

Test run time 0 0 30 minutes Set test run time duration between 1 and 30 minutes.

Start

Stop

* Humidiﬁer test run will not occur if safety circuits (for example, duct high limit switch, airﬂow proving switch, or safety interlock switch) are not

operating correctly.

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OPERATION

Modbus, BACnet, LonTalk interoperability

Vapor-logic comes standard with Modbus or BACnet, or with LonTalk if ordered. Vapor-logic can connect to building automation systems using these protocols. Variables are deﬁned in the tables on the following pages.

Note: For LonTalk installations, contact your local DriSteem representative to

purchase a LonTalk upgrade.

CONNECTIONS

1. If connecting to a Modbus or BACnet MS/TP system, connect Modbus or BACnet system wiring to terminal P7 on the Vapor-logic board (positive to positive, negative to negative).

If connecting to a BACnet/IP system, connect BACnet system wiring to the

Ethernet connection.

2. If connecting to a LonTalk system, connect the LON ProtoCessor module per Step 3 in Figure 66-1.

3. Disconnect power to the Vapor-logic board, wait 5 seconds, and reconnect power.

4. Set up communication with Vapor-logic using your Modbus, BACnet, or LonTalk network manager, referencing Table 67-1.

INSTALLING LONTALK AS A RETROFIT

1. Turn off power to the unit.

FIGURE 66-1: LON PROTOCESSOR MODULE INSTALLATION

1. Remove LON ProtoCessor module from box.

2. Insert LON ProtoCessor module into pins on Vapor-logic board.

Bottom of LON ProtoCessor module

2. Touch the unit’s bare metal frame before handling the LON ProtoCessor module, and hold onto frame while handling the module.

3. While handling the module, hold it by the edge. Avoid touching the components or circuit board.

4. Plug LON ProtoCessor module into mounting pins (as shown in Figure 66-1) with LonTalk connector at the edge of the board. Make sure all pins are seated in the connector.

5. Connect LonTalk system wires to LON ProtoCessor module as shown in Step 3 at right.

6. Turn on power to the unit.

7. Using either the touchscreen or Web interface go to the Communications section of the Settings menu to enable LonTalk communication.

8. Set up communication with Vapor-logic using your LonTalk network manager, referencing Table 67-1.

Vapor-logic board

3. Connect wiring from LonTalk system to LON ProtoCessor module on Vapor-logic board.

Connect LonTalk system wires to LON ProtoCessor module here.

NOTE: Orient the LON ProtoCessor module as shown, with wire connectors end at the side of the Vapor-logic board.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 71

Modbus, BACnet, LonTalk interoperability

Note: The interoperability partner will see the full list with points that apply to other models. The following is a subset of that list and includes only the points that are applicable to the GTS humidiﬁer LX series.

Table 67-1: GTS humidifier LX series interoperability variable and object names

IR-1

IR-2

IR-3

IR-4

IR-5

IR-6

IR-7

IR-8

IR-9

BACnet

Object

Type and

Instance

AI-01 nvoSpaceRH

AI-02 nvoSpaceDewPoint

AI-03 nvoDuctRH

AI-04 nvoSteamDmndMass

AI-05 nvoSteamDemandP

AI-06 nvoAuxTemp

AI-07 nvoTankTemp

AV- 1 nvoSteamOutMass

AV- 2 nvoSteamOutputP

AV- 3 nvoWaterUntilADS

AV- 4 nvoWaterTilSrvc

LonTalk variable

names**

Description

Relative humidity content of the air in the space being humidiﬁed.

Dew point of the air in the space being humidiﬁed.

Relative humidity content of air in the duct.

Steam demand in pounds or kilograms per hour.

Steam demand as a percentage of the humidiﬁer’s total capacity.

Temperature of auxiliary temperature sensor.

Temperature of the water in the humidiﬁer’s evaporating chamber.

Estimated amount of steam the humidiﬁer is producing in pounds or kilograms per hour.

Estimated amount of steam the humidiﬁer is producing as a percentage of the humidiﬁer’s total capacity.

Pounds or kilograms of water remaining to be converted to steam before the next automatic drain sequence (ADS) cycle.

Pounds or kilograms of water remaining to be converted to steam before next service cycle.

Variable name and

BACnet object name

Read-only analog variables

Space_RH RO

Space_dew_point RO

Duct_RH RO

Steam_demand_mass RO

Steam_demand_percent RO

Aux_temp RO

Water_temp RO

Steam_output_mass RO

Steam_output_percent RO

Water_until_ADS RO

Water_until_service RO

* See Note 1 on Page 73. ** See Note 2 on Page 73.

Read Only

(RO) or

Read Write

(RW)

Modbus

number*

30001

30002

30003

30004

30005

30006

30007

30008

30009

IR-10

30010

IR-11

30011

OPERATION

Units Range

I-P units SI units I-P units SI units

% % 0 to 100 0 to 100

ºF ºC 20 to 80 -6 to 26

% % 0 to 100 0 to 100

lbs/hr kg/h

% % 0 to 100 0 to 100

ºF ºC -20 to 160 -29 to 170

ºF ºC

lbs/hr kg/h

% & 0 to 100 0 to 100

100

lbs

100

0 to

100,000

-240 to 265

0 to

100,000

0 to

2,200,000

0 to

2,200,000

0 to

100,000

-151 to 129

0 to

100,000

0 to

1,000,000

0 to

1,000,000

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 72

OPERATION

Modbus, BACnet, LonTalk interoperability

Table 68-1: GTS humidifier LX series interoperability variable and object names (continued)

Variable name and

BACnet object name

Read-only analog variables (continued)

MT_sys_output_mass_hr RO

MT_sys_output_pcnt RO

Setup variables

Run_mode

Space_RH_set_point Write

Space_dew_point_set_point Write

Duct_high_limit_set_point Write

* See Note 1 on Page 73. ** See Note 2 on Page 73.

Read Only

(RO) or

Read Write

(RW)

Write

Read

Modbus

number*

IR-23

30023

IR-25

30025

HR-1

40001

HR-1

40001

HR-2

40002

HR-3

40003

HR-4

40004

BACnet

Object

Type and

Instance

AI-08 nvoMT_SteamOMass

AI-09 nvoMT_SteamOP

MSV-01 nviRunMode

MSV-01 nvoRunMode

AV-05 nviSpaceRHsetPt

AV-06 nviSpaceDewPtSP

AV-07 nviDuctHLsetPt

LonTalk variable

names**

MT steam demand mass

MT steam demand percent

Mode of the unit or system. The deﬁned options are: 1 Auto 2 Local standby 3 System standby 4 Manual drain

Mode of the unit or system. The deﬁned options are: 1 Auto 2 Local standby 3 System standby 4 Manual drain 5 Test outputs 6 Test run

Humidity set point for the space being humidiﬁed.

Dew point set point for the space being humidiﬁed.

Duct high limit set point.

Description

Units Range

I-P units SI units I-P units SI units

lbs/hr kg/h

% % 0 to 100 0 to 100

-- -- 1 to 4 1 to 4

-- -- 1 to 6 1 to 6

% % 0 to 100 0 to 100

ºF ºC 20 to 80 -6 to 26

% % 0 to 100 0 to 100

0 to

100000

0 to

100000

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 73

Modbus, BACnet, LonTalk interoperability

Table 69-1: GTS humidifier LX series interoperability variable and object names (continued)

Variable name and

BACnet object name

Setup variables (continued)

Fieldbus_demand_mass Write Only

Fieldbus_demand_% Write Only

PID_band RW

PID-Kp RW

PID-Ki RW

PID-Kd RW

MT_runmode

MT_steam_req_mass_hr Write Only

MT_steam_req_sys_pcnt Write Only

* See Note 1 on Page 73. ** See Note 2 on Page 73.

Read Only

(RO) or

Read Write

(RW)

Write

Read

Modbus

number*

HR-5

40005

HR-6

40006

HR-7

40007

HR-8

40008

HR-9

40009

HR-10

40010

HR-14

40014

HR-14

40014

HR-15

40015

HR-17

40017

BACnet

Object

Type and

Instance

AV-08 nviFbusDemndMass

AV-09 nviFldBusDemandP

AV-10 nciPIDband PID band. % % 0 to 50 0 to 50

AV-11 nciPIDkp

AV-12 nciPIDki

AV-13 nciPIDkd

MSV-02 nviMTRunMode

MSV-02 nvoMTRunMode

AV-14 nviMT_FBDmndMass

AV-15 nviMT_FBDmndP

LonTalk variable

names**

Description

Steam output (as demanded via ﬁeldbus) in pounds or kilograms per hour. If the request exceeds the unit’s capacity, the unit will run at 100% capacity.

Steam output (as demanded via the ﬁeldbus) as a percentage of the humidiﬁer’s total capacity.

PID-Kp (proportional gain) factor.

PID-Ki (integral gain) factor.

PID-Kp (derivative gain) factor.

"MT runmode; 1 = system standby, 2 = system auto"

MT ﬁeldbus request for steam in pounds or kilograms per hour

MT ﬁeldbus request for steam in percentage of system capacity

OPERATION

Units Range

I-P units SI units I-P units SI units

lbs/hr kg/h

% % 0 to 100 0 to 100

-- --

-- -- 1 to 2 1 to 2

lbs/hr kg/h

% % 0 to 100 0 to 100

0 to

100,000

0 to

1000

0 to

1000

0 to

1000

0 to

100000

0 to

100,000

0 to 1000

0 to

100000

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 74

OPERATION

Modbus, BACnet, LonTalk interoperability

Table 70-1: GTS humidifier LX series interoperability variable and object names (continued)

Variable name and

BACnet object name

Read-only digital I/O

Airﬂow_proving_switch RO

Duct_HL_switch RO

Safety_interlock RO

Combustion_air_damper_ RO

Flue_pressure_switch RO

Power_vent_switch_ RO

Fill_valve RO

Drain_valve RO

MT_active_fault_exists_ somewhere

MT_active_message_exists_ somewhere

* See Note 1 on Page 73. ** See Note 2 on Page 73.

Read Only

(RO) or

Read Write

(RW)

Modbus

number*

DI-1

10001

DI-2

10002

DI-3

10003

DI-4

10004

DI-5

10005

DI-6

10006

DI-8

10008

DI-9

10009

DI-10

10010

DI-11

10011

BACnet

Object

Type and

Instance

BI-01 nvoAirﬂowSwitch 0=Open; 1=Closed

BI-02 nvoDuctHLswitch 0=Open; 1=Closed

BI-03 nvoSafetyI-lock 0=Open; 1=Closed

BI-04 nvoCombustAirDmp

BI-05 nvoFluePressurSw 0=Open; 1=Closed

BI-06 nvoPowerVentSwch

BO-01 nvoFillValve 0=Closed; 1=Open

BO-02 nvoDrainValve

BI-08 nvoMt_AlarmSomWr 0=No; 1=Yes Multi-tank only

BI-09 nvoMt_MsgSomWr 0=No; 1=Yes Multi-tank only

LonTalk variable

names**

0=Damper Closed; 1=Damper Open

0=Vent Off; 1=Vent On

0=Not Draining; 1=Draining

Units Range

Description

I-P units SI units I-P units SI units

-- -- -- --

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 75

Modbus, BACnet, LonTalk interoperability

Table 71-1: GTS humidifier LX series interoperability variable and object names (continued)

BACnet

Object

Type and

Instance

BV-01 nvoDryContact1

BV-02 nvoDryContact2

BV-03 nvoAlarms

BV-04 nviClearAllFault

BV-05 nvoAlrmTnkTmpSen

BV-06 nvoAlrmOvertemp

nvoAlrmRHsignal

BV-07

nvoAlrmDewPtSgnl nvoAlrmDemndSgnl

BV-08 nvoAlrmDuctRHsig

BV-09 nvoAlrmAuxTemp

BV-10 nvoAlrmProbeWire

BV-11 nvoAlrmProbeFail

BV-12 nvoAlrmFillTime

BV-13 nvoAlrmReﬁlTime

BV-14 nvoAlrmNoDrain

BV-15 nvoAlrmXessWater

BV-16 nvoAlrmNoSDUair

BV-17 nvoAlrmPrVentAir

BV-18 nvoAlrmNoCombAir

BV-19 nvoAlrmBlockdFlu

BV-20 nvoAlrmBurner1

LonTalk variable

names**

0=Open; 1=Closed

Flag that a manual clear alarm exists in the system

When set will clear all active faults

Variable name and

BACnet object name

Faults and alarms

ProgOutput1_status RO

ProgOutput2_status RO

Active manual clear alarms exit RO

Clear all active alarms RW

Tank temp sensor failed RW

Tank overtemp, Unit reboot required

Signal at RH input out of range RW

Duct RH sig out of range RW

Aux temp sense out of range RW

Check water probe RW

Faulty water probe RW

Excessive ﬁll time RW

Excessive reﬁll time RW

Tank not draining RW

Excessive boil time, Unit reboot required

No SDU airﬂow RW

No power vent airﬂow RW

No combustion airﬂow RW

Blocked ﬂue RW

Burner 1 fault RW

* See Note 1 on Page 73. ** See Note 2 on Page 73.

Read Only

(RO) or

Read Write

(RW)

Modbus

number*

DV-1

DV-2

DV-3

DV-4

DV-5

DV-6

DV-7

DV-8

DV-9

DV-10

DV-11

DV-12

DV-13

DV-14

DV-15

DV-16

DV-17

DV-18

DV-19

DV-20

OPERATION

Units Range

Description

I-P units SI units I-P units SI units

-- -- -- --

See Table 49-1,

Alarms menu

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 76

OPERATION

Modbus, BACnet, LonTalk interoperability

Table 72-1: GTS humidifier LX series interoperability variable and object names (continued)

BACnet

Object

Type and

Instance

BV-21 nvoAlrmBurner2

BV-24 nvoAlrmIgnitMod1

BV-25 nvoAlrmIgnitMod2

BV-28 nvoAlrmBlower1

BV-29 nvoAlrmBlower2

BV-32 nvoAlrmGasValve1

BV-33 nvoAlrmGasValve2

BV-36 nvoAlrmLowWater

BV-37 nvoAlrmFoaming2

LonTalk variable

names**

Variable name and

BACnet object name

Faults and alarms (continued)

Burner 2 fault RW

Ignition module 1 fault RW

Ignition module 2 fault RW

Blower 1 fault RW

Blower 2 fault RW

Gas valve 1 fault RW

Gas valve 2 fault RW

Low water RW

Replace ignitors! RW

* See Note 1 on Page 73. ** See Note 2 on Page 73.

Read Only

(RO) or

Read Write

(RW)

Modbus

number*

DV-21

DV-24

DV-25

DV-28

DV-29

DV-32

DV-33

DV-36

DV-37

Description

See Table 49-1,

Alarms menu

Units Range

I-P units SI units I-P units SI units

-- -- -- --

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 77

Modbus, BACnet, LonTalk interoperability

Table 73-1: GTS humidifier LX series interoperability variable and object names (continued)

BACnet

Object

Type and

Instance

BV-38 nvoMsgReplCntctr

BV-39 nvoMsgSrviceUnit

BV-40 nvoMsgDrainPend

BV-41 nvoMsgNoDuctAir

BV-42 nvoMsgIlockOpen

BV-43 nvoMsgFreezDrain

BV-44 nvoMsgEOSactive

BV-45 nvoMsgTempCompOn

BV-46 nvoMsgCleanProbe

BV-47 nvoMsgDuctHLtrip

BV-48 nvoMsgDuctHLspan

BV-49 nvoMsgH2Ocutout

BV-50 nvoMsgBoilTempCl

BV-60 nvoMsgMasterEnb

LonTalk variable

names**

Diagnostics menu

Variable name and

BACnet object name

Messages

Replace ignitors soon RW

Service unit RW

Drain pending RW

No airﬂow RW

Interlock open RW

Freeze drain RW

End of season drain active RW

Temp comp on RW

Clean probes RW

Duct HL trip RW

Duct HL span RW

Insufﬁcient water ﬂow RW

Boiling temp calibrated RW

Master enable open RW

Notes:

1. Modbus Input Registers (IR1-IR44) 16 bit read only Modbus Holding Registers (HR1-HR21) 16 bit read/write Modbus Discrete Input Registers (DI1-DI7) single bit read only Modbus Coil Registers (DV1-DV69) single bit read/write

2. nvi LonTalk SNVTs are write-only; nvo are read-only

Read Only

(RO) or

Read Write

(RW)

Modbus

number*

DV-38

DV-39

DV-40

DV-41

DV-42

DV-43

DV-44

DV-45

DV-46

DV-47

DV-48

DV-49

DV-50

DV-60

Description

See Table 65-1,

OPERATION

Units Range

I-P units SI units I-P units SI units

-- -- -- --

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 78

OPERATION

Multiple-tank operation

MULTI-TANK MODE DEFINED

In multi-tank mode, one Vapor-logic controller can control multiple humidiﬁer tanks, and tanks in a multi-tank system can vary by energy source and capacity.

A multi-tank system has one master controller controlling up to 8 slave tanks. The master controller receives the demand signal and controls slave tank steam production based on

• priority group,

• wear leveling,

• fault status.

The master controller also gives permission to slave humidiﬁer tanks to perform functions, such as draining and ﬂushing.

The master controller must be

• ﬁeld-wired to all required control input signals,

• connected to all slave tanks via the DriSteem ﬁeldbus,

• powered during system operation.

MULTI-TANK CONTROL INTERFACE

Most systems have one Vapor-logic touchscreen per multi-tank group. This touchscreen ships with the tank that has the master control board. The touchscreen (or the Web interface; see note below) can be connected to any humidiﬁer in the multi-tank group. Maximum cable length from the touchscreen to any control board in the multi-tank group is 500' (152 m).

Note: Multi-tank groups can also be operated using the Web interface. See “Multi-tank operation with Web interface”

on Page 78.

START-UP ORDER AND TRIM TANKS

All humidiﬁer tanks in a multi-tank group are factory-assigned to a priority group. There are four priority groups: 0, 1, 2, and 3.

Priority groups identify tank function as follows:

• 0 = Trim tanks 2 = Priority 2 tanks (peak)

• 1 = Priority 1 tanks (load) 3 = Redundant tank

• Priority groups identify start-up order:

Tanks in priority group 0 are brought online ﬁrst, followed by tanks in priority group 1, then 2. Priority group 3 designates an optional redundant tank, which comes online only if a tank in the system is unavailable and the remaining tanks cannot meet capacity.

• Trim tank responds ﬁrst:

A trim tank is assigned to priority group 0 and is brought online ﬁrst — always before tanks in priority groups 1, 2, or 3. The trim tank modulates continuously, responding to system demand changes.

Multi-tank groups requiring a rapid response to changes in system demand typically have an electric element humidiﬁer with SSR control as the trim tank.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 79

Multiple-tank operation

OPERATION

TANK GROUPING TO MAXIMIZE EFFICIENCY

Priority 1 and priority 2 tanks can be grouped to improve efﬁciency. Tanks not identiﬁed as trim or redundant tanks are factory-assigned to priority groups 1 and 2. Priority 1 tanks come online before priority 2 tanks. Because tanks in a multi-tank system can vary by capacity, this allows tank grouping to maximize efﬁciency, bringing tanks online in the order that best matches humidiﬁcation load to individual tank capacity.

EXAMPLE 1:

A large-capacity tank that meets humidiﬁcation demand most days is assigned to priority group 1.

Smaller-capacity tanks, needed only when additional capacity is needed, are assigned to priority group 2.

EXAMPLE 2:

A gas-ﬁred tank that meets humidiﬁcation demand most days is assigned to priority group 1.

Electric tanks, needed only when additional capacity is needed, are assigned to priority group 2

Note: Wear leveling occurs only within a priority group.

REDUNDANT TANK FOR MISSION-CRITICAL APPLICATIONS

A redundant tank can be assigned for mission-critical applications. The system capacity of a multi-tank group is the combined capacity of tanks in groups 0, 1, and 2. Placing a tank in priority group 3 ensures that it only runs as a redundant tank. The redundant tank can be assigned to priority group 3 and will operate only if one or more of the tanks in groups 0, 1, and 2 are not available, and the remaining tanks in the multi-tank group cannot meet demand for steam production.

Configuration tips

• Use priority groups 1 and 2 to group tanks for maximum energy efﬁciency. For example, put gas-ﬁred tanks in group 1 and electric tanks in group 2.

• Multiple small-capacity tanks usually operate more efﬁciently than one large-capacity tank meeting the same load requirement.

• Use priority groups 1 and 2 to group tanks by capacity, bringing tanks online in the order that best matches humidiﬁcation load to individual tank capacities.

• If your multi-tank system has a redundant tank, conﬁgure that tank as the master controller. This will reduce system down time while the master controller tank receives servicing. Since the redundant tank operates the least in a multi-tank system, it is the tank most likely to remain online.

• Match the capacity of the redundant tank to the largest tank in the system to ensure the system’s ability to meet maximum humidiﬁcation load when a tank goes ofﬂine.

See Note 1 in Table 76-1.

Note: For best performance, multiple electric humidiﬁers in a given priority

group must all have the same heater controls. That is, they should all be 100% SSR control, or all be sequenced SSR control, or all be contactor control.

TANK WEAR LEVELING

The master controller monitors tank wear and assigns steam production to tanks to equalize wear as much as possible within each priority group.

FAULT TOLERANCE

The master controller monitors tank status of all tanks in a multi-tank group periodically. If a tank goes ofﬂine or is not communicating (“No comm”) for a deﬁned time period, the controller identiﬁes that tank as unavailable and the system responds using other available tanks. If the master controller stops operating, the remaining slave tanks continue to run for a short time at the level they were last run, and then quit.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 80

OPERATION

Multiple-tank operation

Table 76-1: Multitank priority groups application example

Priority

group

Notes:

1. If protection is required against multiple tanks being ofﬂine at the same time, the redundant tank should be at least as large as the sum of the X largest tanks where X is the number of tanks for which protection is desired.

2. From a fuel cost standpoint, electric should have the lowest priority. It should run last and the least.

3. From an energy standpoint, GTS generally has the lowest operating cost.

4. When calculating energy, consider heat loss from distribution and piping of steam.

5. Humidiﬁers within a priority group are load leveled.

6. Humidiﬁers within a group should have the same energy source.

Assignment Description Application considerations

0 Trim

1 Load

2 Peak

3 Redundant

• Provides humidiﬁcation load “throttling,” this unit sees the small changes as demand changes.

• Generally, this should be one tank, and it should be relatively small.

• Generally, this tank should be an SSR-controlled electric resistive unit.

• Carries the bulk of the load; should be the most cost-effective fuel source.

• Only sees large-step changes if a trim tank is used.

• Makes up the demand not met by trim + load.

• Does not run often, because it is needed in only the most demanding situations.

• Because it does not run frequently (making fuel cost less of an issue), this is a good assignment for a lower-up-front-cost humidiﬁer.

• Run time is a function of load percentage split into the peak category.

• Provides the capability to offset a tank that is ofﬂine for any reason.

• This tank will only run when a trim, load, or peak unit is shut down for service or alarm conditions and the remaining trim, load, and peak tanks cannot meet demand.

• The redundant should be as large as the largest tank in the system.

See Note 1 below.

• If a redundant tank is used, making it the master controller improves system uptime, since you will not need to bring down the master controller to service it.

An SSR-controlled electric resistive unit will provide the best control.

GTS is the most cost effective, but any unit can be used.

Electric resistive are the most cost effective (any unit can be used).

• Electric humidiﬁers are the most cost-effective up front.

• Size should be the determining factor.

• Any unit will work.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 81

Multiple-tank operation

OPERATION

WIRING A MULTI-TANK GROUP OF HUMIDIFIERS

To wire a multi-tank group of humidiﬁers:

1. Determine which control board is the master controller. The master controller ships with the touchscreen display. The master controller is labeled as Tank A on the touchscreen display and on the tank’s product label.

2. Connect all required control inputs to the master controller board by following the instructions in “Control input” on Page 12.

3. Wire all control boards of the multi-tank group together using twisted pair wire.

• Important: DriSteem recommends using one pair of wires of a Cat-5 cable.

Do not use non-twisted two-conductor wire.

• Connect controller boards together at terminal block P8. Connect positive to positive terminals, and negative to negative terminals. On the last board in the series of connected boards, jumper the pins at J1001 (located on the Vapor-logic board next to the RJ11 phone socket, see Page 5). On all other boards, J1001 should not be shunted.

4. If you plan to use the Web interface, follow the wiring instructions in “Web interface communication” on Page 21.

• Note: Each tank must be connected via Ethernet to a network system

for the Web interface to access all tanks in the multi-tank group.

Important:

All multi-tank communication must go through the master controller to reach slave tanks. Therefore, the touchscreen display communication requires that power is supplied to:

• The master controller (on Tank A)

• Any other tank that is hosting the display

5. Connect the touchscreen display cable to any control board in the multi-tank system. The master tank must be powered for the display to communicate.

MULTI-TANK SYSTEM SETUP

Factory conﬁguration

Humidiﬁer tanks ordered as a multi-tank group are conﬁgured at the factory. The factory conﬁguration process includes:

• Assigning letter names to tanks (Tank A, Tank B, .... Tank P).

Note: The master tank is always conﬁgured as Tank A.

• Assigning priority group numbers (0, 1, 2, 3)

• Conﬁguring the controllers

Changing factory conﬁguration

Change tank designation using the Web interface only. Go to the Web screen Settings menu to access Multi-tank setup/Tank designator.

Important:

Any change made to or from the tank controller designated as “A” will cause an approximate ﬁve-second delay while the board reboots. During this time the Web interface display will not change.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 82

OPERATION

Multiple-tank operation

CHANGING A PRIORITY GROUP

To change a priority group, go to the Settings menu to access Multi-tank setup/ Tank priority group.

To add a tank to a multi-tank system:

1. Verify that the new tank has the correct tank designator. Change, if necessary, before wiring in Step 2.

2. Connect wiring of new tank.

3. The master controller automatically adds the new tank’s capacity into the total system capacity.

To permanently remove a tank from a multi-tank system:

1. Disconnect control board wiring (location P8) of the tank being removed.

2. Reset system capacity from the Multi-tank Settings menu. The controller will automatically calculate the new system capacity.

Important:

• Each tank in a multi-tank system must have a unique tank designator (A, B, C ... P). Duplicate tank designations will cause multi-tank mode to operate incorrectly.

• Each Vapor-logic board ships with a network IP address of 192.168.1.195. When installing on an Ethernet network, assign each board a unique IP address to avoid conﬂict with other devices on the network.

OTHER SYSTEM PARAMETERS AND INTEROPERABILITY

General system parameters are set the same as for stand-alone tank/controller. See the Setup section of this manual for instructions.

MULTI-TANK OPERATION WITH WEB INTERFACE

If you plan to use the Web interface for multi-tank operation, the web interface must ﬁrst be conﬁgured, see "Web interface communication" on Page 21.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 83

Multiple-tank operation

USING THE WEB INTERFACE

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.

OPERATION

Click on the Setup tab to view Multi-tank setup parameters.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 84

TROUBLESHOOTING

Troubleshooting guide

SOLVING ISSUES

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.

3. If you’re still having issues, call DriSteem. If the troubleshooting guide does not help you solve your issue, call

DriSteem with the following information available:

• Product name and serial number

You’ll ﬁnd this information on the humidiﬁer or control cabinet.

• Issue deﬁnition

Example: water leaking, low humidity, high humidity, etc.

• Alerts Log items (if applicable)

Example: Tank temp, probe wiring, etc.

• Time issue began

Example: Always, after remodel, after a change in weather, etc.

• System changes

Example: Pressure, new boiler, new service, new controller, relocation, change in maintenance, etc.

DriSteem Technical Support: 800-328-4447

CALLING DRISTEEM TECHNICAL SUPPORT

Have the following information ready before calling:

Vapor-logic ﬁrmware version __________________________________________

Humidiﬁer model number _____________________________________________

Humidiﬁer serial number ______________________________________________

Issue deﬁnition ______________________________________________________

Alerts Log items _____________________________________________________

Time issue began ____________________________________________________

Recent system changes ________________________________________________

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 85

Troubleshooting guide

Table 81-1: Troubleshooting guide

Issue Possible causes Actions

Green power indicator light is off on Vapor-logic board

No remote indication of alarm light No remote activation of fan

No readable information on touchscreen display

Power issues

Touchscreen display does not energize

Display is completely black

Touchscreen does not respond to touch

• No control voltage • Check for proper supply voltage.

• Transformer secondary circuit breaker tripped • Check for wiring shorts; reset breaker.

• Dry contact connection not programmed from

• Field wiring not installed • Provide ﬁeld wiring.

• Field-supplied remote fault indicator lamp is burned

• Remote fault Vapor-logic dry contact is not

• No power or incorrect voltage to Vapor-logic

• Modular communication cable is disconnected • Connect modular cable.

• Nonexistent supply voltage to unit • Check main fuse.

• Nonexistent 24 VAC supply to Vapor-logic board • Check for proper supply.

• Nonexistent 21 VDC supply to display • Check 21 VDC voltage supply of the board at

• Humidiﬁer over-temperature thermostat open • Reset manual switch located above heater below

• Touchscreen display is overheated • Cool the touchscreen display.

• Communication cable not connected • Connect cable.

• Defective cable • Replace cable.

• Defective touchscreen display • Replace.

• Defective control board • Contact DriSteem.

• Touchscreen software has locked up • Unplug the communication cable to the display

Settings menu

out

switching

board

TROUBLESHOOTING

• Go to the programmable outputs section of Settings menu to program dry contacts.

• Check if at remote indicator light is burned out; replace if needed.

• Check dry contact continuity (Vapor-logic terminal P12) for contact closure.

• Check main power supply.

• Reset control transformer circuit breaker if tripped.

• Reset thermal cutout if tripped.

• Low limit thermostat is not satisﬁed (outdoor enclosure only).

• Check main line safety switches.

• Check heater fuses.

• Verify proper transformer voltage characteristics.

• Verify proper wiring of transformer.

• Check for control circuit voltage, 24 VAC. If voltage is not present, check transformer circuit breaker. Reset if needed.

P11. If voltage is low unplug all ﬁeld wiring to see if the voltage returns. Incorrect ﬁeld wiring on other terminals can draw down the voltage. If voltage does not return, replace the Vapor-logic board.

• Check cable from Vapor-logic to display is a DriSteem supplied cable. Regular phone cables will ﬁt in the jack but will not allow voltage to the display.

terminal cover.

and re-plug it back in to cycle power.

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 86

TROUBLESHOOTING

Troubleshooting guide

Table 82-1: Troubleshooting guide (continued)

Issue Possible causes Actions

Alert:

Space RH signal out of range

Alert:

Dew point signal out of range

Alert:

Demand signal out of range

Alert:

Duct RH signal out of range

Alert:

Aux temp sens out of range

Transmitter or humidistat issues

Alert:

No SDU airﬂow

Alert:

Check water probe

Alert:

Faulty water probe

Water level control probe issues

When transmitter or humidistat alerts appear, possible causes are:

• Open, shorted, or incorrect wiring

• Incorrect signal

• Ground loop

• Signal exceeds range limits. Correct input signals are: 4-20 mA, or 0-16 VDC

• SDU blower or airﬂow proving switch is incorrectly wired

• SDU blower cover is off • Install cover.

• SDU blower motor is inoperable (SDU fan does not start)

• Breaker tripped • Reset breaker.

• Incorrect installation • Verify proper wiring of probe system. Do not use shielded

• Dirty or oxidized probes • Clean probe, removing oxidation and/or minerals or

• Deterioration of probe rod assembly • Replace probe rod assembly.

• Missing probe rod • Replace missing probe rod if possible; otherwise, replace

• Check the Control Input Signal type in the Settings/Control menu. The selected type must match the actual sensor hardware.

• Check voltages at board terminal P11:

-- RH signal: 2-10 VDC.

-- Dew point signal: 2-10 VDC.

-- Demand signal: 0-16 VDC.

• Check voltages at board terminal P13:

-- Duct high limit signal: 0-21 VDC, 2-10 VDC.

• Check voltages at board terminal P14:

-- Auxiliary temp sensor or temperature compensation

sensor: 2-10 VDC.

• Check output on transmitter:

-- If there is no output, replace transmitter.

-- Verify output is 4-20 mA.

-- Calibrate transmitter or humidistat if necessary.

• Check 21 VDC voltage supply of the board at P11. If voltage is low unplug all ﬁeld wiring to see if the voltage returns. Incorrect ﬁeld wiring on other terminals can draw down the voltage. If voltage does not return, replace the Vapor-logic board.

• Isolation control board by others may not be compatible. Consult DriSteem.

• Check SDU for proper wiring.

• Replace SDU blower.

(screened) wiring.

• Verify probe wiring is not routed with high voltage wiring.

• Verify wiring between control cabinet and humidiﬁer does not exceed the recommended 50' (15 m) limit. (Remote mount cabinets only)

• Verify ﬁll and drain plumbing was installed per the instructions in the humidiﬁer's manual.

• Verify piping from the humidiﬁer to the dispersion assembly is installed correctly, that there are no elbows or restrictions in the piping, and that the length of the piping is not too long. See instructions in the humidiﬁer's manual.

• Verify there is a P-trap installed on the tank and/or that the P-trap is not plugged.

• Verify that there is a machine ground between control cabinet and humidiﬁer tank.

replace if needed.

• Drain tank water to below the probe; reset system and restart.

probe assembly.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 87

Troubleshooting guide

Table 83-1: Troubleshooting guide (continued)

Issue Possible causes Actions

Alert:

Excessive ﬁll time

Alert:

Excessive reﬁll time

Filling issues

Tank is not full.

• Fill and drain valve wiring reversed • Correct wiring.

• Low water supply pressure • Verify water pressure is 25 psi (552 kPa) minimum.

• In-line strainer plugged • Clean as needed.

• Humidiﬁer cover interlock switch improperly wired

• Fill valve not open • If 24 VAC is present across ﬁll valve coil, replace valve.

• Fill valve not wired properly to control board • Verify proper ﬁll valve wiring at terminal P17 (ﬁll, drain) and

• Inlet water needle valve closed or plugged • Check if needle valve is open and free of sediment.

• Fill valve with incorrect operating voltage • Verify valve coil is 24 VAC.

• Plugged ﬁll valve • Remove ﬁll valve and check for foreign material plugging the valve.

• Fill valve installed backward • Check arrow direction on valve; or ”In” should be visible on ﬁll

• Excessive water hammer can bend a needle

valve and make it difﬁcult to open

• Oriﬁce after ﬁll valve may be plugged • Service valve strainer and oriﬁce assembly.

• Drain valve leaking water • Verify drain is in the Auto position and is closed.

• Missing probe rod • Replace missing probe rod if possible; otherwise, replace probe

Tank is full.

• Probe malfunctioning • Clean or replace probe.

• No tank ground • Install tank ground.

• Fill valve stuck open • Check valve for foreign matter.

• Fill valve installed backward • Check arrow direction on valve; or ”In” should be visible on ﬁll

• Excessive condensate is draining into the tank • Consult DriSteem to increase the amount of water that can be

• Drain valve not fully closed • If an obstruction does not allow drain valve to fully close, clean

• Poor tank ground • Verify good machine ground.

TROUBLESHOOTING

• Correct wiring.

P18 (secondary heat exchanger ﬁll valve(s)).

• Test operation by going to the Test section under the Diagnostics menu.

valve body.

• Replace valve, if needed.

• Install a water supply line shock arrester.

rod assembly.

• Verify probe wiring is correct.

valve body.

converted to steam before receiving a fault.

valve.

• If there is a broken or weak return spring on drain valve, replace

the valve.

• Check if 24 VAC is present at valve. If so, check wiring of

Vapor-logic

control board terminal P17 (drain).

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 88

TROUBLESHOOTING

Troubleshooting guide

Table 84-1: Troubleshooting guide (continued)

Issue Possible causes Actions

Unit does not ﬁll with water. • Malfunctioning ﬁll valve • Unplug probe head. Fill valve should open. If ﬁll valve does not

open, verify proper 24 VAC to ﬁll valve. If voltage is present and valve does not open, replace valve or valve coil.

• Verify that coil is 24 VAC.

• Verify that valve stem moves freely.

• No water supply to ﬁll valve • Check if water supply line strainer is plugged.

• Verify that manual water line shut-off valve is open and that pressure exists.

• Check that in-line needle valve is open.

• Unit is not in Auto Mode • Change mode to Auto.

• Vapor-logic control is in end-of-season drain mode

• Inlet water needle valve is closed • Check needle valve.

• Unit is in freeze protection draining • Change mode to Auto.

• Fill valve stuck in closed position • Recycle power to recycle ﬁll valve closing and opening.

• Malfunctioning level control system • See below.

Fill valve does not close • Open drain valve • If automatic drain valve is locked in the manual open position,

Filling issues

• Malfunctioning level control system • Check that probe plug is plugged in fully.

• Fill valve is stuck • Check if ﬁll valve is installed backwards. If yes, repipe.

• Check for humidiﬁcation demand signal at control board.

reset to automatic.

• Replace valve if there is a broken return spring on the drain valve.

• Clean or replace drain valve if an obstruction in the valve does not allow complete closure.

• Close manual drain valve if it is open.

• If Vapor-logic shorted output to ﬁll valve coil, replace board or drain coil.

• If needed, clean probe rods or replace.

• Replace board if Vapor-logic control board is defective.

• Verify that system is in auto mode.

• Verify that probe is wired correctly.

• If there is a faulty internal spring or diaphragm in the ﬁll valve, replace valve.

• Check if there is an obstruction that does not allow valve to seat properly. Clean or replace valve as needed.

• Check for control voltage across ﬁll valve coil. (Check wiring and controls.)

• Install water inlet shock arrestor.

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 89

Troubleshooting guide

Table 85-1: Troubleshooting guide (continued)

Issue Possible causes Actions

Alerts:

Tank not draining

Unit does not perform automatic drain sequence

Draining issues

Unit does not perform end-of-season drain

Alert:

Drain sensor out of range

• Tank drain outlet • If the humidiﬁer tank drain outlet is plugged, clean.

• Water detection probes • Clean probe or replace probe rod assembly.

• Drain valve wiring • Check drain valve wiring.

• Fill valve • Check for voltage present at the valve. If present, clean or

• System programmed for manual drain • Run a test cycle to see if the system activates drain output.

• Drain line backing up with water

• Drain line plugged

• Automatic drain is disabled • Go to Settings menu to verify that auto drain/ﬂush is enabled.

• Drain fault, plugged drain valve, or plugged drain pipe

• Malfunctioning automatic drain sequence • Go to Settings menu and check auto drain/ﬂush settings.

• No power to the automatic drain valve • Check if 24 VAC is present at terminal block P17 (drain) and

• Defective automatic drain valve • If voltage is present at the valve and it still does not open,

• Input signal always has a demand • Reduce demand signal.

• Vapor-logic

• Drain valve • Valve not wired, or incorrectly wired, to control board.

• Signal outside of 4-20mA • Check P6 voltage from CS2 to ground (2-10vdc)

TROUBLESHOOTING

• Check to be sure drain valve is wired to Terminal P17 (drain) on control board.

• Reset Vapor-logic.

replace valve.

• Replace ﬁll valve if water is leaking through.

• Insufﬁcient drain line pitch.

• Insufﬁcient drain line size. See tank manual for drain piping size and pitch requirements.

• Clean drain valve piping.

at drain valve.

replace valve.

setup • Verify in Settings menu Vapor-logic is set for end-of-season

drain.

• Check 24 VAC across valve coil during test cycle.

• Replace transmitter if no voltage output

• Check voltage on P6 from 21vdc to ground is 21vdc. If not, re-check terminals for all ﬁeld connections.

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 90

TROUBLESHOOTING

Troubleshooting guide

Table 86-1: Troubleshooting guide (continued)

Issue Possible causes Actions

Alert:

Tank temperature sensor failed

Alert:

Tank overtemp

Reduced or not output (even though water level is correct)

Tank does not heat up. • Over-temperature thermostat switch located

Heating issues

Humidiﬁer tank has proper water level and is always warm.

• Open, shorted, or incorrect wiring of sensor • Check wiring terminals for correct wiring and voltages.

• Humidiﬁer interlock switches and/or overtemperature thermostat

• Unit has overheated; temperature is at 25 ºF (14 ºC) over boiling temperature

• Faulty sensor • Replace sensor.

• Dirty heat exchanger • Clean.

• Dirty burners

• Low gas pressure

under heater wiring cover tripped

• Humidiﬁer cover interlock switch (select models only)

• Incorrect or nonexistent control voltage • Check for proper supply voltage on electrical diagram.

• Incorrect or nonexistent supply voltage to the unit

• Duct RH above high limit set point • Check for duct airﬂow.

• No demand signal • Check signal by others.

• Humidiﬁer is in Standby mode • Change mode to Auto.

• Aquastat • This is normal; the aquastat is maintaining a certain tank water

1000 Ohms = 68 °F (20 °C); 1702 Ohms = 212 °F (100 °C).

• Verify that switch or thermostat is wired.

• Verify interlock switch is set correctly and humidiﬁer cover is on.

• Reset over-temperature thermostat if tripped.

• Check for proper water level in tank.

• Clean or adjust as appropriate. See tank manual for instructions.

• Reset thermostat switch.

• Humidiﬁer cover not wired; adjust interlock switch.

• Verify proper transformer voltage characteristics.

• Verify proper wiring of transformer.

• Check for control circuit voltage on electrical diagram. If voltage is not present, troubleshoot boards and wiring system for potential short circuit.

• Check main line fuse.

• Check main line safety switch.

• Check heater fuses and wiring diagram.

• Verify operation of duct high limit switch or transmitter.

• Check for miswired connection.

• Verify in the Settings menu that humidiﬁer is conﬁgured for demand signal.

temperature within range of 40 ºF to 180 ºF (4 ºC to 82 ºC).

• Readjust aquastat temperature to a lower set point.

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 91

Troubleshooting guide

Table 87-1: Troubleshooting guide (continued)

Issue Possible causes Actions

Humidity is below desired level

Humidity set point issues

• Unit is operating but fails to meet required humidity level

• No call for humidity from humidistat or from control and high limit humidity transmitters

• Excessive outside air volume • Verify proper operation of fans, dampers, VAV systems, etc.

• Humidity control input type not the same as Vapor-logic ﬁrmware

• Vapor-logic

• Unit undersized; replace with a larger unit or add additional humidiﬁer.

• Skim duration is too long.

• If drain valve does not close fully, determine the cause and clean, repair, or replace as needed.

• If drain pipe water seal is allowing steam to go down the drain, ﬁll P-trap with water or repair as needed.

• If there is an improper water seal height, increase to the recommended height (see humidiﬁer tank manual for water seal height).

• If there is excessive internal steam pressure, determine the cause of the high pressure (e.g., high duct static pressure, undersized oriﬁces in dispersion tubes, water, or crushed vapor hose) and correct as required.

• Replace leaking gasket or vapor hose.

• Recalibrate if controls are out of calibration.

• If ﬁll valve is stuck open, repair or replace.

• If zone valve will not open, repair or replace.

• Interconnecting steam piping to the dispersion assembly is too long and/or uninsulated (do not insulate steam hose).

• Low or no signal strength from humidistat. Check for proper wiring.

• Check humidity transmitters (4 to 20 mA output).

• Adjust set point if RH or dew point set point is too low.

• Check Vapor-logic control board connections P11 and P13. Consult DriSteem.

not in Auto mode • Change mode to Auto.

TROUBLESHOOTING

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 92

TROUBLESHOOTING

Troubleshooting guide

Table 88-1: Troubleshooting guide (continued)

Issue Possible causes Actions

Humidity above set point • High entering relative humidity • Dehumidify.

• Unit oversized • Consult DriSteem.

• Reduced airﬂow • Check fans, dampers, VAV systems, etc.

Hunting (humidity swings above and below desired set point)

Humidity set point issues

• Improperly located humidistat or humidity transmitters

• Malfunctioning controls • Check for incorrect supply voltage.

• Malfunctioning control system • If there is a faulty or inaccurate humidity controller or

• Air volume varies rapidly • Stabilize.

• Air temperature is varying rapidly • Stabilize to ±1 ºF (±1 ºC).

• Proportional band is too small and/or integral gain (Ki) is too large

• On-off control is not adequate • If controlling the humidiﬁer with an on-off signal, consider

• Relocate, using guidelines in Appendix section of this manual.

• Check for incorrect control signal.

• Check for improper wiring hookup.

• If humidity controller or transmitter are out of calibration or

• Check for proper Vapor-logic

• Relocate poorly located control components. See “Sensor

• Verify that the touchscreen display modular cable is isolated

• If RH swings outside PID band, increase PID band using the

• Decrease integral gain (Ki) using the Set Up menu.

malfunctioning, repair or recalibrate.

transmitter, repair or replace.

control settings: RH set point,

high limit set point, cycle rate, PID tuning, etc.

placement” on Page 26.

from power wiring.

Settings menu.

changing to controlling with a modulating signal.

Continued

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 93

TROUBLESHOOTING

Troubleshooting guide

Table 89-1: Troubleshooting guide (continued)

Issue Possible causes Actions

Alert: Blocked ﬂue • Blocked ﬂue sensor is open • Check venting system for obstructions.

• Check air line to ﬂue switch for obstructions.

• Windy conditions cause downdrafts in venting system. Install a high wind vent cap or isolate as recommended by local codes.

Alert: Gas valve [number] fault

Alert: Burner [number] fault • No gas supply to unit • Verify that gas service valve is on and receiving minimum

Alert:

Ignition module [number] fault

Alert:

Blower [number] fault

Alert:

No power vent airﬂow

Gas-to-steam (GTS) humidifier issues

Alert:

Flue temperature switch

Alert: Tank temperature switch

Alert: Flue or tank overtemp cutout

Alert: Flue sensor out of range

• Failed ignition module

• Miswired gas valve

• Gas valve is off or there is no power to the valve

• Gas valve outlet pressure is too low • Verify outlet pressure is set per rating plate.

• Blower inlet is dirty or obstructed • Clean inlet and check for obstructions.

• Flame sensor not sensing ﬂame • Check ﬂame sensor wiring.

• Polarity reversed at power block • Check polarity.

• Ignition sequence engaged without power to gas valve

• Gas valve/ignite/sensing electrode is out of sequence

• The blower is incorrectly wired, or the blower failed to meet demand speed

• The power venter air ﬂow switch is open • Check for proper power vent wiring.

• Flue temperature is too high

• Tank is not full

• Flue temperature is too high

• Tank is not full

• Flue temperature is too high

• Excessive inlet water temperature (over

90°F [32°C]).

• Tank is not full • Check if water supply line strainer is plugged.

• Excessive scale for tank and heat

exchanger

• Signal outside of 4-20mA • Check P4 voltage from CS1 to ground (2-10vdc)

• Check ignition module. Replace if necessary.

• Check gas valve wiring.

pressure to manifold per rating plate.

• Check for 24 VAC from the ignition module to the gas valve.

• Check that gas valve plug is seated properly.

• Check polarity at incoming power. Switch if necessary.

• Stray ﬁber from burner touching ﬂame sensor. Use a screwdriver to gently push down ﬁbers near ﬂame sensor.

• Flame sensor is cracked. Replace.

• Verify ignition sequence.

• Replace ignition module.

• Verify wire connections to gas valve, ignitor, and ﬂame sensing rod.

• Check for proper blower wiring.

• Replace blower.

• Repair or replace power venter.

• Unit automatically shuts off and cools down. The unit will automatically restart when ﬂue temperatures return to normal.

• Excessive inlet water temperature (over 90°F [32°C]).

• Check if water supply line strainer is plugged.

• Clean scale from tank and heat exchanger.

• Check supply water pressure. Provide supply water pressure as speciﬁed on unit.

• Unit automatically shuts off and cools down. The unit will automatically restart when ﬂue temperatures return to normal.

• Check supply water pressure. Provide supply water pressure as speciﬁed on unit.

• Clean scale from tank and heat exchanger.

• Replace transmitter if no voltage output

• Check voltage on P6 from 21vdc to ground is 21vdc. If not, re-check terminals for all ﬁeld connections.

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 94

REPLACEMENT PARTS

Replacement parts

Table 90-1: Vapor-logic replacement parts

Description Quantity Part number

Kit (includes main controller and required Molex plugs) 1 183504-004

Touchscreen display - GTS LX series only 1 183508-001

Touchscreen display communication cable (contact DriSteem for lengths other than 27" (686 mm) and 60" (1524 mm)

Grip elastomeric touchscreen display 1 408494-023

Molex connector plug, 2-position 1 406246-002

Molex connector plug, 3-position 1 406246-003

Molex connector plug, 4-position 1 406246-004

LonTalk card 1 408642

FIGURE 90-1: VAPOR-LOGIC REPLACEMENT PARTS

27" (686 mm) 408490-014

60" (1524 mm) 408490-009

Main board Touchscreen display

Molex connector plug (2-position shown)

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

LonTalk card

Page 95

Notes

VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL

Page 96

WARRANTY

Expect quality from the industry leader

Since 1965, DriSteem has led the industry with innovative methods for humidifying and cooling air with precise control. Our focus on ease of ownership is evident in the design of the Vapor-logic controller. DriSteem also leads the industry with a Two-year Limited Warranty and optional extended warranty.

For more information

www.dristeem.com sales@dristeem.com

For the most recent product information visit our Web site: www.dristeem.com

DRI-STEEM Corporation a subsidiary of Research Products Corporation DriSteem U.S. operations are ISO 9001:2015 certiﬁed

U.S. Headquarters: 14949 Technology Drive Eden Prairie, MN 55344 800-328-4447 or 952-949-2415 952-229-3200 (fax)

European ofﬁce: Grote Hellekensstraat 54 b B-3520 Zonhoven Belgium +3211823595 E-mail: dristeem-europe@dristeem.com

Continuous product improvement is a policy of DriSteem; therefore, product features and speciﬁcations are subject to change without notice.

DriSteem, Vaporstream, Vapormist, and Vapor-logic are registered trademarks of Research Products Corporation and are ﬁled for trademark registration in Canada and the European community.

Product and corporate names used in this document may be trademarks or registered trademarks. They are used for explanation only without intent to infringe.

Two-year Limited Warranty

DRI-STEEM Corporation (“DriSteem”) warrants to the original user that its products will be free from defects in materials and workmanship for a period of two (2) years after installation or twentyseven (27) months from the date DriSteem ships such product, whichever date is the earlier.

If any DriSteem product is found to be defective in material or workmanship during the applicable warranty period, DriSteem’s entire liability, and the purchaser’s sole and exclusive remedy, shall be the repair or replacement of the defective product, or the refund of the purchase price, at DriSteem’s election. DriSteem shall not be liable for any costs or expenses, whether direct or indirect, associated with the installation, removal or reinstallation of any defective product. Excluded from the Limited Warranty are all consumable and wear and tear items such as cylinders, membranes, ﬁlters, or media replacements. These items are subject to usual wear and tear during usage.

DriSteem’s Limited Warranty shall not be effective or actionable unless there is compliance with all installation and operating instructions furnished by DriSteem, or if the products have been modiﬁed or altered without the written consent of DriSteem, or if such products have been subject to accident, misuse, mishandling, tampering, negligence or improper maintenance. Any warranty claim must be submitted to DriSteem in writing within the stated warranty period. Defective parts may be required to be returned to DriSteem. Excluded from the Limited Warranty are all consumable and wear and tear items such as cylinders, membranes, ﬁlters, or media replacements. These items are subject to usual wear and tear during usage.

DriSteem’s Limited Warranty is made in lieu of, and DriSteem disclaims all other warranties, whether express or implied, including but not limited to any IMPLIED WARRANTY OF MERCHANTABILITY, ANY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, any implied warranty arising out of a course of dealing or of performance, custom or usage of trade.

DriSteem SHALL NOT, UNDER ANY CIRCUMSTANCES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS, REVENUE OR BUSINESS) OR DAMAGE OR INJURY TO PERSONS OR PROPERTY IN ANY WAY RELATED TO THE MANUFACTURE OR THE USE OF ITS PRODUCTS. The exclusion applies regardless of whether such damages are sought based on breach of warranty, breach of contract, negligence, strict liability in tort, or any other legal theory, even if DriSteem has notice of the possibility of such damages.

By purchasing DriSteem’s products, the purchaser agrees to the terms and conditions of this Limited Warranty.

Extended warranty

The original user may extend the term of the DriSteem Limited Warranty for a limited number of months past the initial applicable warranty period and term provided in the ﬁrst paragraph of this Limited Warranty. All the terms and conditions of the Limited Warranty during the initial applicable warranty period and term shall apply during any extended term. An extended warranty term of an additional twelve (12) months or twenty four (24) months of coverage may be purchased. The extended warranty term may be purchased until eighteen (18) months after the product is shipped, after which time no extended warranties are available. When a Dristeem humidiﬁer is purchased with a DriSteem RO system, an extended twenty-four (24) month coverage is included.

Any extension of the Limited Warranty under this program must be in writing, signed by DriSteem, and paid for in full by the purchaser.

Firmware Version 6.X.X Form No. VL6-IOM-EN-0619 Part No. 890000-761 Rev A