DriSteem VAPOR-LOGIC Version 6 Installation And Operation Manual
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VAPOR-LOGIC® VERSION 6
Humidifier Control System
Installation and
Operation Manual
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
iv
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
P1
P2
TOP MID LOW
P3
FPsw LW BT1 GV1
P4
CS1 TT lsw
P5
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
P6
RS485 termination for multi-tank
Vapor-logic touchscreen display connection
J1001
FIELDBUS = Modbus
or BACnet MS/TP (RS485)
CPU LED
+ —
FIELDBUS
J404
J403
P7
P9
+ —
MULTI-TANK
(RS485)
P8
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
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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.
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
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P17
P18
P19
SSR/BL Steam
Fill
Drain
SDU
PV/CA
CT/I1CT/I
2
CT/I
3
CT/I
4
GV1
AI2
Fieldbus
24VACTop
Mid
Low
BT1
LWFPsw
lsw
TT
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
RH
P13
DHL
24VAC AFsw
VDC
21
P14
VDC
24
TS24
P15
P16
CAsw
VAC
24
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
11
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
RH
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
RH
2-wire #18GA
Shield cable
RH
Y
RH
Room
or duct
4-20 mA
Vapor-logic
Input resistance
500 ohms
Control panel
shield GND lug
Vapor-logic
21VDC
RH
2-wire #18GA
Shield cable
Control panel
shield GND lug
Note: Input resistance 500 ohms
21VDC
RH
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
NC
C
GN
21VDC
RH
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
16
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
Airow switch in a duct When using an SDU
Vapor-logic
Vapor-logic
P13
24VAC
24VAC
Com
NO
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
C
GN
NC contact
opens above
set point
Vapor-logic
P13
21VDC
DHL
2-wire #18GA
shield cable (TYP)
Control panel
shield GND lug
V
RH
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
RD
WH
Control panel
Key
Control circuit wiring
Field wiring
Optional factory
TS
2-wire #18GA
shield cable (TYP)
Optional field
Break to external
connections diagram
VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL
17
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
18
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
19
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)
A
B
LonTalk terminals
Next multitank humidifier
Twisted pair
Next LonTalk device
VAPOR-LOGIC® VERSION 6 INSTALLATION AND OPERATION MANUAL
20
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
21
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
22
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
23
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
24
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
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
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