Important: Read and save these instructions.
Va p o r-lo g ic ® 4
H umidifie r Control S yste m
Ins tal l ati o n a n d
Op erati o n Man u al
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–11
Appendices . . . . . . . . . . . . . A-1–A-4
Vapor-logic4 capabilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Humidification system overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Vapor-logic4 control board:
Three-dimensional view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Connection points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Using the keypad/display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Using the Web interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pre-installation Checklist and instructions . . . . . . . . . . . . . . . . . . . 8
Control input signals . . . . . . . . . . . . . . A-1
Sensor placement . . . . . . . . . . . . . . . . . A-3
GTS model-specific default setup values
. . . . . . . . . . . . . . . . . . . . A-4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12–33
Step 1: Field wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Step 2: Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Step 3: Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-85
Menus and screens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Home screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Status screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Diagnostics screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Alarms screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Setup screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24, 46
PID tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Water level control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Duct high limit options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Temperature sensor/transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Tank preheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Aquastat
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Freeze protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Fan-based dispersion operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Sensor offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Automatic drain sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Skimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
End of season draining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Service interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Setting date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Battery, nonvolatile memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Security/password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Downloading historical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Data backup and restore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Firmware updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Test outputs, test run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Modbus, BACnet, LonTalk interoperability . . . . . . . . . . . . . . . . . . 63
Multi-tank operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Warranty
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back cover
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Overview
Va p o r- l o g i c 4 c a p a b i l i t i e s
Accurate, responsive control
Vapor-logic®, DRI-STEEM’s humidification
system controller, has been setting the standard
for exceptional functionality and accurate RH
control since 1992. The fourth generation
controller, Vapor-logic4, retains the qualities
that established the Vapor-logic reputation,
plus offers several new capabilities, including:
Web interface, a standard feature, enables remote,
simultaneous, secure access from anywhere, at any time.
Modbus®, BACnet®, and LonTalk® allow interoperability with
multiple building automation systems (BAS).
Up-time optimizer keeps humidifiers operating through system
faults, as long as safety conditions are met, minimizing production
down-time.
USB port on Vapor-logic4 allows easy software updates, and data
backup and restore capability.
PID control provides accurate, responsive, and adjustable relative
humidity control.
Real-time clock allows time-stamped alarm and message tracking,
and accurate drain and flush scheduling.
Tank temperature sensor, mounted on the evaporating chamber,
provides over-temperature protection, freeze protection, and tank
preheating, allowing rapid response to a call for humidity.
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 or device
activation, and are easily configured during the setup process.
Multiple-humidifier control allows staged control of up to 16
humidifiers with one controller.
More capabilities on the next page ▶
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Va p o r- l o g i c 4 c a p a b i l i t i e s
Enhanced diagnostics include:
Insert a USB
flash drive into
the Vapor-logic4
board’s USB port
to perform
software
updates, or
to back up and
restore data.
tTest outputs function, using the keypad/display or Web interface
to verify component operation
tTest humidifier function, by simulating demand to validate
performance
tData collection of RH, air temperature, water use, energy use,
alarms, and service messages
Factory commissioning of humidifier and control board
guarantees a reliable, fast installation, minimizing field installation
requirements.
Preconfigured but easily changed. Just go into the Setup menu to
change a factory setting if, for example, a control signal changes.
Use the
Vapor-logic4
keypad/display or the standard Web
interface, shown here, to control your
humidification system.
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Overview
Humidification system overview
Figure 3-1:
Typical humidification system layout (GTS humidifier shown)
Dispersion assembly
Humidifier
Vapor-logic4
keypad/display
Connect a computer directly to the
Vapor-logic4 board, or through a
network, to use the Web interface
Every humidification system with a Vapor-logic4 controller has a keypad/display connection and an Ethernet connection for
connecting to a Web interface on a computer. A GTS humidifier is shown here, with keypad/display mounted on the cabinet. Other
types of DRI-STEEM humidifiers can have the keypad/display contained within a control cabinet or mounted remotely.
OM-1220
Operating conditions
The Vapor-logic4 main board and keypad/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 temperate:
-40 °F to 185 °F (-40 °C to 85 °C)
Operating humidity range: <95% noncondensing
Keypad/display
Operating temperature:
32 °F to 158 °F (0 °C to 70 °C)
Storage temperate:
-22 °F to 176 °F (-30 °C to 80 °C)
Operating humidity range: <95% noncondensing
CAUTION! The keypad/display is not rated for plenum operation.
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Va p o r- l o g i c 4 c o n t r o l b o a r d
Figure 4-1:
Vapor-logic4 control board
Power to board connection
USB connection
Factory connection points
for drain, steam valve, etc.
Field connection points for
transmitters, power vent, etc.
Field connection terminal labels
have a white border.
Factory connection points
for water level control,
gas valves, etc.
BACnet or Modbus
connection
Optional LonTalk
module location
DRI-STEEM RS485
connection
Ethernet connection
for computer
Keypad/display
connection
The photo above shows key components of the Vapor-logic4 control board. See the illustration on the next page for more detail.
Figure 4-2:
Control board mounted on GTS subpanel
Vapor-logic4 control board
The Vapor-logic4 control board is
mounted to the subpanel located inside
the humidifier control compartment or
cabinet.
Note: Control board is shown here
mounted on a GTS humidifier subpanel.
Location of control board on subpanel
will vary with humidifier type.
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Overview
Va p o r- l o g i c 4 b o a r d c o n n e c t i o n s
Figure 5-1:
Vapor-logic4 control board connections
P19
Steam
SSR/BL
P17
P20
P15
P14
P11
24VDC RH
N.O. C
P12
P13
P9:
Ethernet connection to
laptop computer or network
Optional LonTalk® card location
P6
Ethernet
P10
SW1:
RS485 termination for multi-tank
P9
DSTEEM
Fieldbus
P8:
DSTEEM = Multi-tank (RS485)
SW1
P7:
Fieldbus = Modbus or BACnet
(RS485)
P8 P7
BT3 GV3 BT2 GV2
P6:
GV4 = Gas valve 4 (24VAC input)
BT4 = Blower tach 4 (pulse tach input)
= Ground for AI
AI1 = Analog input (RTD input)
AI1
P5:
GV2 = Gas valve 2 (24VAC input)
BT2 = Blower tach 2 (pulse tach input)
GV3 = Gas valve 3 (24VAC input)
BT3 = Blower tach 3 (pulse tach input)
BT4 GV4
P5
USB
P4
P16
Triac SDU PV/CA Fill Drain CT/I1 CT/I2 CT/I3 CT/I4
FPsw LW BT1 GV1
AI2
P4:
Isw = Interlock switch (24VAC input)
TT = Tank temp sensor (RTD input)
= Ground for tank temp sensor
AI2 = Analog input (0-10 VDC typical)
P3
TT lsw
P3:
GV1 = Gas valve 1 (24VAC input)
BT1 = Blower tach 1 (pulse tach input)
LW = Low water (24VAC input)
FPsw = Flue pressure switch
(24VAC input)
N.C. 24VDC DHL 24VAC AFsw 24VDC TS 24VAC CAsw 24VAC PVsw
P18
P2
24VAC
P2:
Low = Low water probe
Mid = Mid water probe
Top = Top water probe
= Ground for water probe
P1
P1:
24VAC = Power to board
= Ground for power return
Top Mid Low
LED-1 (power indicator)
LED-2
P19:
Steam = Steam or hot water valve
=Ground for blower and P16 triac
SSR/BL = SSR (electric systems)/or
Blower (gas systems)
P18: (all are triacs)
CT/I4 = Contactor 4 (electric systems)/or
Ignition module 4 (gas systems)
CT/I3 = Contactor 3/Ignition module 3
CT/I2 = Contactor 2/Ignition module 2
P17: (all are triacs)
CT/I1 = Contactor 1/Ignition module 1
Drain = Drain valve (24 VAC output)
Fill = Fill valve (24 VAC output)
P16: (all are triacs)
PV/CA = Power vent/combustion air
control signal (24 VAC output)
SDU = Space Distribution Unit
(24 VAC output)
Triac = Programmable output, 4 AMP*
max. (Note: Connect ground at P19)
P15:
PVsw = Power vent switch (24VAC input)
24VAC = Power to power-vent switch
CAsw = Combust. air sw. (24VAC input)
24VAC = Power to combustion air switch
P14:
TS = Aux. temp. sensor or temp. comp.
sensor (4-20 mA input)
24VDC = Power to aux. temp. sensor or
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)
24VDC = Power to duct high limit switch
or transmitter
P12:
Programmable dry contact (10 AMP* max.)
N.C. = Normally closed
C = Common
N.O. = Normally open
P11:
= Ground for demand signal by others
RH = Space RH input (RH transmitter,
dew point transmitter, humidistat,
or demand signal by others input
(4-20 mA or 0-10 VDC typical)
24VDC = Power to space RH sensor
Display
P10:
Vapor-logic4 keypad/
display connection
Notes:
* CAUTION! Programmable dry contact (P12) is rated for 10 Amp maximum; programmable triac (P16) is rated for 4 Amp maximum. Exceeding these
maximum ratings can cause the triac or relay components on the Vapor-logic4 board to fail.
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connections at all terminals.
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Using the keypad/display
Figure 6-1:
Using the Vapor-logic4 keypad/display
Typical Home screen
Change set point from the Home
screen by pressing the Up or
Down arrow keys until set point is
highlighted (as shown here), press
Enter, press Up or Down arrow
keys to change value, press Enter
to confirm
Tank temperature
Change Mode from the Home
screen by pressing the Up or
Down arrow keys until Mode is
highlighted, press Enter, press Up
or Down arrow keys to change,
press Enter to confirm
Press Main softkey to
go to Main menu
Fill icon
shows water level
status (see Page 35)
Tank status
Alarm
label flashes
when there is a
system alarm
One of three softkeys;
functions vary by screen
Press Up
or Down
arrow to move
through menus
and screens
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Message
label becomes
highlighted when
there is a system
message
Press
Enter
to select or
confirm
Overview
Using the Web interface
Figure 7-1:
Using the Vapor-logic4 Web interface (Setup screen shown)
Click on a tab label to move to another screen
Click on CHANGE
to change value
To change value:
Highlight value;
type in new value;
DMJDLPO"11-:
Click here to
view alarms
Click here to
view messages
Click on label
to expand (+)
or contract (-)
menu item
Drag scroll bar
to view more of
the window
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1SFJOTUBMMBUJPO $IFDLMJTU
Figure 8-1:
Vapor-logic4 control board detail
☐ See Figure 8-1 for field terminal block locations. Note that
field wiring connection locations on the Vapor-logic4 board are
surrounded with a white border.
Full board
☐ 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.
Terminals P-11
through P-16
have a white
border on the
Vapor-logic4
board. This
is where you
will make
most of your
field wiring
connections.
☐ When making field connections, do not route low voltage wires
near the line voltage area in the humidifier control cabinet. 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.
Board detail showing white border
More Checklist on the next page ▶
Field
connection
terminals have
labels printed
on a white
border.
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Installation
1SFJOTUBMMBUJPO $IFDLMJTU DPOUJOVFE
☐ If you have a remote-mounted control cabinet, the water
level control device, thermal trip, safety interlock, fill valve,
and drain valve wiring must be minimum 18-gauge (1 mm2)
stranded wire run in a conduit separate from power wires.
Do not use shielded (screened) cable for water level control
devices.
When the control cabinet is mounted remotely from the
humidifier, connect a ground wire from the machine ground
lug on the humidifier to the machine ground lug in the control
cabinet. The bonding machine ground wire should be the same
AWG (mm2) as the largest heater wire (electric humidifiers) or
sized per NEC or IEC 60364 requirements.
[
Figure 9-1:
Vapor-logic4 terminal block detail and connection instructions
Tighten screw after
wire is inserted.
Maximum torque is
3 in-lb (0.34 N-m)
Terminal block plug.
Make connections
when the plug is
attached to the
board, or remove for
easier access. Pull
plug straight up to
remove.
Remove insulation
from end of wire
and insert wire here.
Vapor-logic4 board detail
(see also Figure 5-1)
P12
P13
P14
P15
P16
P11
24VDC RH
N.O. C
N.C. 24VDC DHL 24VAC AFsw 24VDC TS 24VAC CAsw 24VAC PVsw
Triac SDU PV/CA
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Installation process
The Vapor-logic4 board is designed to make installation very easy:
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white.
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inserting wires and tightening screws.
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board fully configured, with drain, fill, and other humidifier
components factory-wired to the board, and the keypad/display
attached to the humidifier and connected to the Vapor-logic4
board.
Installing Vapor-logic4 is a three-step process:
1. Connect field wiring from device to Vapor-logic4 board.
See instructions beginning on Page 12. Note that some
connections listed here may not apply to your system.
t $POUSPMJOQVU (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
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– Airflow switch (duct or SDU)
– Duct high limit on-off switch or transmitter
– Temperature compensation transmitter (or auxiliary
temperature sensor connected to same terminal)
Continued on the next page ▶
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Installation
Installation process
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– Vapor-logic4 keypad
– Ethernet
– Modbus
– BACnet
– LonTalk
– Multiple-tank communication
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2. Complete the Setup process.
See instructions beginning on Page 24.
3. Start up humidifier(s).
See instructions beginning on Page 33.
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.
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Field wiring:
Control input
Connect control input signal wiring by inserting wires into
Terminal P11 (labeled 24vdc, RH, and ground) per the wiring
diagram on the next page. Tighten screws; maximum torque is
3 in-lb (0.34 N-m).
Figure 12-1:
Terminal P11
Allowed inputs at Terminal P11 include:
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Transmitters provide a signal proportional to the RH or dew
point being measured. All transmitters provided by
DRI-STEEM are two-wire devices using a 4 to 20 mA signal.
Terminal P11
Terminal P11:
24VDC = Power to space RH sensor
RH = Space RH input (RH transmitter, dew point
transmitter, humidistat, or demand signal by
others) (4-20 mA or 0-16 (typ. 0-10) VDC input
= Ground for demand signal by others
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Demand signals are sent to the Vapor-logic4 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-logic4.
Humidistats provide either on-off control or modulating control.
DRI-STEEM humidistats are powered by a 24 VDC supply
provided by the Vapor-logic4 control board.
When using modulating control, the signal from a humidistat
directly controls the amount of output from the humidifier.
Note:
If you do not know which control
components were ordered with your system,
contact DRI-STEEM or connect your keypad/
display to the Vapor-logic4 board per the
instructions on Page 17. Go to the Setup
menu per the instructions on Page 24 to
view system parameters that were factory
configured as ordered.
Notes:
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operation, see the control input signals section in the Appendix.
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information about LonTalk, BACnet, or Modbus control input
signals.
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Installation
Field wiring:
Control input
Figure 13-1:
Vapor-logic4 control input wiring connections
Signal by others
Transmitter
On-off RH humidistat
Key
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Field wiring:
Limit controls
Duct or SDU airflow proving switch
Connect wiring for a duct 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.)
Figure 14-1:
Terminal P13
See also the sensor placement section in the Appendix.
Terminal P13
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 24vdc) per the wiring diagram on the previous page. Tighten
screws; maximum torque is 3 in-lb (0.34 N-m).
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 the sensor placement section in the Appendix.
Terminal P13:
24VDC = 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)
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Installation
Field wiring:
Limit controls
Figure 15-1:
Vapor-logic4 limit controls wiring connections
Airflow switch
In a duct
When using an SDU
Duct high limit (not used on SDU or Area-type)
Temperature compensation transmitter or auxiliary temperature sensor
Key
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Installation
Field wiring:
Limit controls
Temperature compensation transmitter
or auxiliary temperature sensor
Connect wiring for a temperature compensation transmitter or an
auxiliary temperature sensor by inserting wires into the terminal
block plug at P14 (labeled 24vdc and TS) per the wiring diagram
on the previous page. Tighten screws; maximum torque is 3 in-lb
(0.34 N-m).
Figure 16-1:
Terminal P14
Terminal P14
Note: Only one device can be connected at P14. You will identify
the connected device during Step 2 of the installation process.
An auxiliary temperature sensor typically monitors duct or space
air temperature. Mount the auxiliary temperature sensor wherever
you want to monitor temperature.
A temperature compensation transmitter allows Vapor-logic4
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:
Terminal P14:
24VDC = Power to auxiliary temperature sensor or
temperature compensation sensor (transmitter)
TS = Auxiliary temperature sensor or temperature
compensation sensor (transmitter) (4-20 mA input)
1. See Figure 16-2. 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.
Figure 16-2:
Temp. comp. transmitter installation
Window frame
Thermostat
control wires
Surface-mounted
thermostat
temperature
control box on
wall
Typical
sensor
cord
routing
Doublepane
window
glass
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.
Secure temperature
sensor tip to inside
surface of window
glass using clear RTV
silicone adhesive
OM-337
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Installation
Field wiring:
Communication connections
Vapor-logic4 keypad/display
If your keypad/display is factory-mounted and connected to the
Vapor-logic4 board, proceed to installing the next device required
by your system.
Figure 17-1:
Terminal P10
To connect a Vapor-logic4 keypad/display to the Vapor-logic4
board, insert the male end of the provided cable into the
Vapor-logic4 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 keypad/display. This
connection provides DC power and communication to the keypad/
display.
If your keypad/display was shipped loose, mount the keypad/
display in a location so that the provided cable is long enough to
connect the keypad/display to the Vapor-logic4 board.
Terminal P10:
Display
If a longer keypad/display cable is needed, order a replacement
cable from DRI-STEEM (see the replacement parts section of this
manual), or use a four-conductor straight-through cable or a sixconductor crossover cable connected to an RJ11 jack.
CAUTION! Maximum cable length is 500' (152 m).
Note required operating conditions listed on Page 3.
CAUTION! When routing keypad/display cable inside the control
cabinet, route cable away from all power wiring.
Other than factory-mounted, there are three ways to mount the
keypad/display. See Figure 17-2.
Figure 17-2:
Mounting the keypad/display
Mount keypad/display back directly to wall
Mount keypad/display back to junction box
Mount keypad/display back to phone plate
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Installation
Field wiring:
Communication connections
Figure 18-1:
Vapor-logic4 communication wiring connections
Communication
Key
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Installation
Field wiring:
Communication connections
Web interface communication
Utilizing the Vapor-logic4 Web interface is optional. The
humidifier can be operated using the keypad/display and/or the
Web interface. When using the Web interface, the humidifier can
be accessed by a computer either directly or through a network.
Each Vapor-logic4 controller ships with the static IP address
of 192.168.1.195. This allows users to locate the Web interface
upon start-up. After initial start-up, the IP address can remain
as is, be re-assigned as another static address, or configured to
automatically go out 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.
Figure 19-1:
Terminal P9
Terminal P9:
Ethernet
Connecting Web interface directly
to a computer not on a network
1. Connect the Ethernet cable.
Insert the male end of an RJ45 Ethernet cable into the
Vapor-logic4 board at P9 (labeled Ethernet; see Figure 19-1)
until you hear a click sound. Insert the other end of the cable
into a computer. Since the Ethernet port on the Vapor-logic4
board is auto-sensing, either a straight-through or crossover
cable will work.
Vapor-logic4 default IP address
192.168.1.195.
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-logic4. In order to validate this, check the IP address of
the computer being used by going to the computer’s Start menu
and selecting Run. When the box shown below appears, type in
cmd on the Open line and hit OK.
Figure 19-2:
Checking your IP address
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Installation
Field wiring:
Communication connections
After a system prompt appears, type in ipconfig and then hit
Enter. The current IP address of the computer should appear.
If the first three segments of that IP address are different
than the first three segments of the humidifier’s default IP
(192.168.1.xxx), you must change either your computer or
Vapor-logic4’s IP address such that they match each other.
Figure 20-1:
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 match your
computer.
The most straightforward way to change the IP address
of the humidifier using Vapor-logic4 is to use the keypad/
display. Go to Setup/Communications/Network IP address
on the keypad/display and change the IP address such that
the first three segments of the computer’s settings match the
network address. Make sure the last digit of the IP address
is different between the humidifier and the computer. Cycle
power of Vapor-logic4 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.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Installation
Field wiring:
Communication connections
4. Connect to the humidifier.
a. Using a computer connected to the Vapor-logic4 board,
open a Web browser such as Mozilla® Firefox® or Internet
Explorer®.
Figure 21-1:
Entering the IP address
b. Find the browser address bar (see Figure 21-1), delete
all existing text in the browser address bar, type the
Vapor-logic4 default IP address into the browser’s address
bar: 192.168.1.195 and press Enter.
Connecting Web interface directly to a computer on a network
Enter the IP address in your browser’s address bar
CAUTION! Before you connect a Vapor-logic4 device to a network,
please contact your IT department. Given that the Vapor-logic4
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. Working with your IT department before network
connection will help ensure the integrity of the network and the
devices on that network.
If your network uses DHCP (Dynamic Host Configuration
Protocol), use the keypad/display to navigate to:
Setup/Communications/Network IP Address. Enable DHCP and
restart the Vapor-logic4 board.
CAUTION! When DHCP is enabled, the server can dynamically
change the IP address of Vapor-logic4, making existing bookmarks
unusable. The most current IP address can always be found by
using the keypad/display to navigate to:
Set-Up/Communications/Network IP Address.
Important: DHCP cannot be enabled from the Web interface; it
must be enabled using the keypad/display.
Other communication connections
For BACnet or LonTalk installation instructions, see Page 63.
For multiple-tank installation instructions, see Page 69.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Installation
Field wiring:
1SPHSBNNBCMF USJBD BOE SFMBZ
Programmable triac
Connect wiring to the output by inserting wires into the terminal
block plug at P16 (labeled Triac) and into the terminal block
plug at P19 (labeled ground), per the wiring diagram below. This
connection allows remote activation of a device such as a fan or
signal light. Output parameters are defined during Step 2 of the
installation process.
Figure 22-1:
Terminal P16
CAUTION! Programmable triac (P16) is rated for 4 Amp maximum.
Exceeding this maximum rating can cause the triac component on
the Vapor-logic4 board to fail.
Terminal P16
Terminal P16: (all are triacs)
Triac = Programmable output (4 AMP max.)
(Note: Connect ground at P19)
PV/CA = Power vent/combustion air control signal
(24 VAC output)
SDU = Space Distribution Unit (24 VAC output)
Programmable relay (dry contact)
Connect wiring for remote signaling using a programmable relay
(dry contact) by inserting wires into the terminal block plug at P12
(labeled N.O., C, and N.C.), per the wiring diagram on the previous
page. Tighten screws; maximum torque is 3 in-lb (0.34 N-m).
This connection allows remote activation of a device such as a fan
or signal light. Output parameters are defined during Step 2 of the
installation process.
CAUTION! Programmable relay (dry contact) (P12) is rated for 10
Amp maximum. Exceeding this maximum rating can cause the
relay component on the Vapor-logic4 board to fail.
Figure 22-2:
Terminal P12
Figure 22-3:
Vapor-logic4 programmable triac and relay wiring connections
Programmable triac and relay
Terminal P12
Terminal P12:
Programmable relay (dry contact) (10 AMP max. rated)
N.O. = Normally open
C = Common
N.C. = Normally closed
Key
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Installation
Field wiring:
A r e a - t y p e , S D U , c o m b u s t i o n a i r,
power vent
Area-type and SDU dispersion fans
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; maximum torque is 3 in-lb
(0.34 N-m).
Figure 23-1:
Terminal P16
(54DPNCVTUJPOBJSTXJUDIBOEQPXFSWFOUPQUJPOBM
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; maximum torque is 3 in-lb (0.34 N-m).
The combustion air switch is on the combustion air damper. The
power vent switch indicates airflow at the power venter.
Terminal P16
Terminal P16: (all are triacs)
Triac = Programmable output
(Note: Connect ground at P19)
PV/CA = Power vent/combustion air control signal
(24 VAC output)
SDU = Space Distribution Unit (24 VAC output)
Figure 23-2:
Terminal P15
Terminal P15
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)
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Installation
*OTUBMMBUJPO4UFQ4FUVQ
Figure 24-1:
Keypad/display screens
“A” indicates that these
settings apply to Tank A.
All humidifier tanks are
labeled as “A” except
in applications where
multiple humidifiers
are controlled by one
controller.
“1/15” indicates
the highlighted
item is the first of
fifteen items
SETUP
1/15
A
In p ut sig nal
Limit controls
Water t yp e
Water mana g e m ent
Fan-based dis p ersion
MAIN
HOME
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 Setup menu. The Setup menu is also where you
make future system setting changes.
To begin the field setup process, go to the Setup menu on either the
keypad/display or the Web interface. Setup menu parameters are
listed in tables starting on Page 26. Options and defaults are the
same whether viewed from the keypad/display or Web interface.
However, labels may be abbreviated on the keypad/display.
Using the keypad/display
To access the Setup menu on the keypad/display, press the Main
softkey on the Vapor-logic4 keypad (see figure below). Press the
Down arrow on the keypad until Setup is highlighted. Press Enter.
After entering the Setup menu, press the Up and Down arrows to
scroll through all setup parameters or to change values. Use the
Enter key to select parameters.
BACK
Push Up or Down arrow
to scroll through menu
items; press Enter to
select highlighted item
Figure 24-2:
Using the Vapor-logic4 keypad
Typical Home screen
INPUT SIGNAL
1/4
A
RH transmitter
Dew p t transmitter
De mand sig nal
Hu midistat
MAIN
HOME
RH X-MITTER
BACK
2/4
Transmitter enabled
On
RH set p t
35%
MAIN
HOME
BACK
A
Press Main softkey
to go to Main
menu; press Up
or Down arrow
to move through
menus and screens
Press Up
or Down
arrow to move
through menus
and screens
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Press
Enter
to select or
confirm
Installation
*OTUBMMBUJPO4UFQ4FUVQ
Using the Web interface
Although not required for humidifier operation, the Web interface
allows convenient and remote access to Vapor-logic4.
See Page 19 for Web interface connection and IP address
instructions. Follow the instructions below to complete the setup
process.
Figure 25-1:
Using the Vapor-logic4 Web interface (Setup screen shown)
Click on a tab label to move to another screen
Click on CHANGE
to change value
To change value:
Highlight value;
type in new value;
DMJDLPO"11-:
Click here to
view alarms
Click here to
view messages
Click on label
to expand (+)
or contract (-)
menu item
Drag scroll bar
to view more of
the window
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Installation
Installation: Setup
Table 26-1:
Setup menu
Default value
Minimum
value
Maximum
value
Units
--
--
--
--
Transmitter enabled
--
No
:FT
--
RH set point
35
0
100
%
RH offset
0
-20
20
%
PID tuning
--
--
--
--
RH PID band
10
0
50
%
Proportional gain
80
0
1000
---
Integral gain
40
0
1000
---
Menu item
Notes
Input signal
RH transmitter
Derivative gain
Dew pt transmitter
Transmitter enabled
Dew point set point
Dew point offset
0
0
1000
---
--
--
--
--
--
No
:FT
--
50
20
80
°F
10
-6
26
°C
0
-20
20
°F
0
-11
11
°C
--
--
--
--
10
1
20
°F
5
1
20
°C
Proportional gain
80
0
1000
--
Integral gain
40
0
1000
--
PID tuning
Dew point PID band
0
0
1000
--
Demand signal
Derivative gain
--
--
--
--
VDC signal
--
--
--
--
VDC signal enabled
--
No
:FT
--
0% output at
1.0
0.0
Maximum
VDC
100% output at
9.0
Minimum
10.0
VDC
--
--
--
--
mA signal
--
No
:FT
--
0% output at
mA signal enabled
4.0
0.0
Maximum
mA
100% output at
20.0
Minimum
20.0
mA
--
--
--
--
No
No
:FT
--
--
--
--
--
No
No
:FT
--
--
--
--
--
No
No
:FT
--
--
--
--
--
No
No
:FT
--
Control via Modbus
Modbus controlled
Control via BACnet
BACnet controlled
Control via LonTalk
LonTalk controlled
Humidistat
Humidistat enabled
DRI-STEEM recommends using default values for offsets
and PID settings when first setting up your humidifier.
DRI-STEEM recommends using default values for offsets
and PID settings when first setting up your humidifier.
Choose Modbus, BACnet, or LonTalk in this section only
if your demand input signal is via Modbus, BACnet, or
LonTalk. If you are interoperating (sharing operating
parameters with a building automation system) using
Modbus, BACnet, or LonTalk protocols, see also the
Communications Setup options.
Note::PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFST More on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Installation
Installation: Setup
Table 27-1:
Setup menu (continued)
Default
value
Minimum
value
Maximum
value
Units
--
--
--
--
:FT
No
:FT
--
--
--
--
--
:FT
No
:FT
--
--
--
--
--
Transmitter enabled
No
No
:FT
--
Duct HL set point
80
5
95
% RH
Duct HL span
5
0
20
% RH
Duct HL offset
0
-20
20
% RH
Potable enabled
--
No
:FT
--
Softened enabled
--
No
:FT
--
DI/RO enabled
--
No
:FT
--
Menu item
Notes
Limit control
Airflow switch
Switch in system
HL switch
Switch in system
HL transmitter
Span (throttle span) is an offset below the high limit set
point where the humidifier reduces output but does not
turn off until the device high limit set point is reached.
Water type
CAUTION! Changing the water type setting from
potable or softened to DI/RO, or from DI/RO to potable
or softened requires humidifier hardware changes.
Note::PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFST More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Installation
Installation: Setup
Table 28-1:
Setup menu (continued)
Default value
Minimum
value
Maximum
value
Units
--
--
--
--
Model-specific*
Damper
Motorized
--
Electric
Manual
Electric
--
Status
Normally closed
(N.C.)
Normally
closed (N.C.)
Normally open
(N.O.)
--
Auto drain/flush
--
--
--
--
CAUTION! Auto drain/flush requires a humidifier
with an electric drain valve.
--
No
:FT
--
When enabled, the humidifier automatically drains
and then flushes the tank at user-defined intervals.
0
2,200,000
lbs
0
1,000,000
kg
--
--
--
--
--
--
--
--
Menu item
Notes
Water management
Drain valve
Type
Actuator
Drain/flush enabled
Usage
Model-specific*
Schedule enabled
Allowed days
Sunday
:FT
No
:FT
--
Monday
:FT
No
:FT
--
Tuesday
:FT
No
:FT
--
Wednesday
:FT
No
:FT
--
Thursday
:FT
No
:FT
--
CAUTION! Changing drain valve settings requires
changing the drain valve.
Select amount of water to be converted to steam
before auto drain/flush starts.
Select days of week auto drain/flush is allowed once
usage requirement is met.
Friday
:FT
No
:FT
--
Saturday
:FT
No
:FT
--
0
0
23
--
Drain duration
Model-specific*
0
120
Minutes
Select number of minutes for drain valve to remain
open during auto drain/flush. Default value is based
on tank and valve size.
Flush duration
Model-specific*
0
15
Minutes
Select number of minutes for fill valve to remain
open during flushing.
Time to drain/flush
Note:
* See the Appendix in this manual for model-specific default values.
t :PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFST
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Select time of day (24 hour clock) auto drain/flush
starts once usage requirement is met.
Installation
Installation: Setup
Table 29-1:
Setup menu (continued)
Menu item
Default value
Minimum
value
Maximum
value
Units
Notes
Water management (continued)
Skim
--
--
--
--
Skim enabled
:FT
No
:FT
--
Skim duration
Model-specific*
0
120
Seconds
--
--
--
--
EOS enabled
:FT
No
:FT
--
Idle time for EOS
72
1
168
Hours
--
End of season drain
Aquastat
Aquastat enabled
Aquastat set point
Service interval
Service interval
--
--
--
--
No
:FT
50
40
180
°F
10
4
82
°C
--
--
--
--
Model-specific*
0
2,200,000
lbs
Model-specific*
0
1,000,000
kg
SDU on system
Area-type
Area-type on system
Time delay
Output time delay
Enabled as default except on DI water systems.
If enabled, the humidifier tank drains after the
humidifier has been idle for a user-defined time.
Select number of hours humidifier is idle before end
of season draining starts.
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
before service interval is met.
CAUTION! Changing fan-based dispersion settings
can require component changes for system to
operate correctly.
Fan-based dispersion
SDU
Enabled as default except on DI water systems.
--
--
--
--
--
No
:FT
--
--
--
--
--
--
No
:FT
--
--
--
--
--
5
1
30
Minutes
An SDU is a space distribution unit, which disperses
steam using a fan housed in a cabinet.
An Area-type dispersion unit is a caged fan mounted
on top of the humidifier tank.
Select number of minutes fan-based dispersion unit
operates after water in tank stops boiling. A delay
keeps the fan running until all steam is dispersed.
Note:
* See the Appendix in this manual for model-specific default values.
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%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Installation
Installation: Setup
Table 30-1:
Setup menu (continued)
Menu item
Default
value
Minimum
value
Maximum
value
Units
CAUTION! Changing temperature sensor settings
can require component changes for system to operate
correctly.
Remote temp sensor
Temp compensation
Temp comp enabled
Temp monitor
Temp monitor enabled
Temp sensor offset
Temp sensor offset
--
--
--
--
--
No
:FT
--
--
--
--
--
--
No
:FT
--
--
--
--
--
0
-20
20
°F
0
-11
11
°C
BACnet enabled
BACnet baud rate
BACnet address
Modbus
Modbus enabled
Modbus baud rate
Modbus address
LonTalk
LonTalk enabled
Network IP address
Network IP address
Enable DHCP
Used to calibrate temperature monitoring sensor and
temperature compensation sensor
CAUTION! Changing communications settings can
require component changes for system to operate
correctly.
Communications
BACnet
Notes
--
--
--
--
--
No
:FT
--
38400
9600
76800
--
99
0
255
--
--
--
--
--
--
No
:FT
--
9600
4800
38400
--
99
0
255
--
--
--
--
--
--
No
:FT
--
--
--
--
--
192.168.1.195
192.168.1.195
255.255.
255.255
--
No
No
:FT
--
Note: :PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFST
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Use keypad/display to access this menu item. This item
is not available when using the Web interface.
More on the next page >
Installation
Installation: Setup
Table 31-1:
Setup menu (continued)
Default
value
Minimum
value
Maximum
value
Units
--
--
--
--
CAUTION! Programmable dry contact (P12) is rated
for 10 Amp maximum.Exceeding this maximum rating
can cause the dry contact (relay) component on the
Vapor-logic4 board to fail.
All alarms
:FT
No
:FT
--
A dry contact activates whenever there is an alarm.
Selected alarms/messages
No
No
:FT
--
A dry contact activates whenever there are alarms or
messages selected from the setup list.
Heat on-off enabled
No
No
:FT
--
A dry contact activates when the humidifier is heating.
Steam yes-no enabled
No
No
:FT
--
A dry contact activates when the tank temperature
reaches boiling.
--
--
--
--
CAUTION! Programmable triac (P16) is rated for 4 Amp
maximum. Exceeding this maximum rating can cause
the triac component on the Vapor-logic4 board to fail.
All alarms
No
No
:FT
--
A triac activates whenever there is an alarm.
Selected alarms/messages
No
No
:FT
--
A triac activates whenever there are alarms or
messages selected from the setup list.
Heat on-off enabled
No
No
:FT
--
A triac activates when the humidifier is heating.
Steam yes-no enabled
No
No
:FT
--
A triac activates when the tank temperature reaches
boiling.
Date
--
1/1/2007
1/1/2099
mm/dd/yy
Time
--
0:00
23:59
Hours:Minutes
Display in English
--
No
:FT
--
Display in French
--
No
:FT
--
Display in German
--
No
:FT
--
Menu item
Notes
Programmable outputs
Dry contact
24 VAC triac
Set date and time
24 hour clock
Language
Note: :PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFST
Select one language for both keypad/display and Web
interface communications.
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Installation
Installation: Setup
Table 32-1:
Setup menu (continued)
Menu item
Default
value
Minimum
value
Maximum
value
Units
Notes
Units
Display inch-pound
--
No
:FT
--
Display SI
--
No
:FT
--
Security
Require password
Set password
Time-out
No
No
:FT
--
None
0
9999
--
5
1
120
Minutes
100.0
0.0
245.0
%
CAUTION! Changing the capacity calibration setting
changes reported, not actual, humidifier output
information.
5
1
120
Minutes
Select number of minutes keypad/display remains idle
before returning to the Home screen.
--
--
--
--
Enter a four-digit password using numbers only.
The number of inactivity minutes Vapor-logic4 remains
in read-write mode before returning to read-only mode
Capacity adjust
Capacity calibration
Idle time
Idle time
Reset to defaults
Reset to defaults
Select this if you want to reset all humidifier settings to
factory defaults.
CAUTION! This action cannot be reversed.
Note: :PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFST
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Installation
*OTUBMMBUJPO4UFQ
Start-up
To start up your humidifier, go to the Start-up Checklist in your
humidifier tank’s installation, operation, and maintenance manual.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Operation:
Using menus and screens
. Figure 34-1:
Using the keypad/display
Press the Main
softkey to go to
Status, Diagnostics,
tics,
Alarms, or Setupp
screens
Vapor-logic4 keypad/display has the following menus and screens:
t )PNFTDSFFO
t .BJONFOVBOEGPVSTVCNFOVT
– Status
– Diagnostics
– Alarms
– Setup
Press the Main softkey to go to the Main menu selection screen.
Press the Up and Down arrow keys to choose a submenu and press
Enter to select.
Vapor-logic4 Web interface has the following screens:
t 4UBUVT
t %JBHOPTUJDT
t "MBSNT
t 4FUVQ
t )FMQ
Click on tab labels to go to other screens. The highlighted tab
indicates the current screen.
Press the Up or
Down arrow keys to
choose a submenu
or change a value.
Press the Enter key
to select a submenu
or value.
Figure 34-2:
Using the Vapor-logic4 Web interface (Status screen shown)
Click on a tab label to move to another screen
Click here to
view alarms
Click here to
view messages
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Click on CHANGE
to change value.
Note that most
system parameters
are changed in the
Setup menu.
Drag scroll bar
to view more of
the window
Operation
5IF )PNF TDSFFO LFZQBEEJTQMBZ
Vapor-logic4 returns to the Home screen on the keypad/display
after a user-defined 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 filling skimming,
heating, boiling, and draining.
There is a tank level indicator on the right side of the screen. See
the table below for a description of tank level indicators.
Above the tank level indicator is a tank temperature display
showing actual tank temperature.
Changing mode and set point from the Home screen
Mode and Set point can be changed from the Home screen.
Press the Up or Down arrow key until the Set point or Mode is
highlighted, press Enter, press Up or Down arrow key to change
value, press Enter to confirm. All other parameters shown on the
Home screen are for viewing only and cannot be changed. Go to
the Setup menu to change these items.
Figure 35-1:
Keypad/display Home screen
SPACE RH
SET PT 212˚F
35%
OUTPUT
59%
TANK A
MODE: Auto
Fillin g
MAIN MESSAGE AL AR M
34%
Figure 35-2:
Water level control for standard
water systems
Tank activities defined
Top probe
t 'JMMJOH Fill valve remains open until water reaches operating
level.
t 4LJNNJOH Fill valve is open to allow water to flow through the
overflow port, skimming off precipitated minerals. (Potable and
softened water systems only.)
t %SBJOJOH Tank is draining.
t 'MVTIJOH Fill and drain valve are open to flush tank. (Potable
and softened water systems only.)
t )FBUJOH Water in tank is heating.
t #PJMJOH Water in tank is boiling and there is a demand for
humidity.
t )PU Water is at boiling temperature and there is no demand for
humidity.
t 8BSN Water temperature is equal to or greater than 100 °F
(38 °C) and not boiling.
t $PME Water temperature is less than 100 °F (38 °C).
t &04ESBJO Humidifier is in end-of-season drain.
t &NQUZ There is no water in the humidifier and there is no
demand for humidity.
Mid probe
Low probe
Tank-level icons indicate water level at the
water level control probe. See Page 51 for
more information about water level control.
VLC-OM-030
Table 35-1:
Tank-level indicators
Indicates in:
Icon
Potable or softened
water systems
(see Figure 35-2)
DI/RO
water systems
Water level is above the top
probe.
Water is above
low water level.
Water level is between the
mid and top probes.
N/A
Water level is between the
low and mid probes.
N/A
Water level is below
the low probe (heat is
disabled).
Water is below
low water
level (heat is
disabled).
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
The Status screen
Using either the keypad/display or the Web interface, the Status
screen is where all humidifier parameters can be viewed.
Figure 36-1:
Keypad/display screens
“1/4” indicates the
highlighted item
is the first of four
items
“A” indicates these
settings apply to Tank A.
All humidifier tanks are
labeled as “A” except
in applications where
multiple humidifiers
are controlled by one
controller.
MAIN MENU
1/4
See the tables on the following pages for Status screen item
descriptions for both the keypad/display and Web interface.
Figure 36-2:
Web interface Status screen
A
Tank status
Dia g nostics
Alarms
Tank setu p
HOME
Push Up or Down arrow
to scroll through menu
items; press Enter to
select highlighted item
TANK STATUS
Drag scroll bar
to view more of
the window
2/24 A
Mode
Auto
Space RH
34% RH
MAIN
HOME
TANK STATUS
BACK
3/24 A
S p ace RH
34% RH
RH set p oint
35% RH
MAIN
HOME
BACK
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
The Status screen
Table 37-1:
Status menu
Menu item
Tank run mode
Default
value
Minimum
value
Maximum
value
Units
Standby
--
--
--
Space RH
--
0
100
%
RH set point
35
0
100
%
--
0
10
VDC
--
0
20
mA
--
20
80
°F
--
-6
26
°C
Dew point
set point
50
20
80
°F
10
-6
26
°C
Steam demand
--
0
100
%
Input signal
Dew point
--
0
100,000
lbs/hr
--
0
100,000
kg/h
Duct RH
--
0
100
%
Duct HL switch
--
Open
Closed
--
Duct HL
set point
80
0
100
%
Duct HL signal
--
0
20
mA
Tank
temperature
--
-240
265
°F
--
-151
129
°C
--
0
2200
Ohms
--
-20
160
°F
--
-29
71
°C
--
4
20
mA
Steam output
Tank temp
signal
Aux
temperature
Aux temp signal
Note: :PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFST
Notes
t 0QFSBUJOHNPEFPGIVNJEJGJFS$IPPTFGSPN"VUP-PDBMTUBOECZ
Master standby, Drain tank, Test I/O, or Test heat.
t *OAuto mode, the humidifier operates normally. All humidifier
components are monitored and controlled. If there is a call for
humidification, the system reacts.
t *OStandby 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.
t *OMaster standby mode, the master controller of a multipletank system is in Standby mode and, therefore, demand is 0 for all
humidifiers in the multiple-tank system.
t *ODrain tank 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.
t 4FFUIF%JBHOPTUJDTTFDUJPOGPSJOGPSNBUJPOBCPVUTest outputs and
Test run modes.
Displays steam demand as a percent of capacity
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
The Status screen
Table 38-1:
Status menu (continued)
Menu item
Default value
Minimum
value
Maximum
value
Units
High probe
signal
--
0
1000
counts
High water
probe
--
No water
Water
--
Mid probe
signal
--
0
1000
counts
Mid water
probe
--
No water
Water
--
Low probe
signal
--
0
1000
counts
Low water
probe
--
No water
Water
--
DI low water
switch
--
No water
Water
--
Airflow switch
--
Flow
No flow
--
Interlock switch
--
Open
Closed
--
Water until
drain/flush
--
0
2,200,000
lbs
--
0
1,000,000
kg
Water until
service
--
0
2,200,000
lbs
--
0
1,000,000
kg
Blower 1 tach
--
0
7000
rpm
Displays rotation speed of Blower 1 (GTS systems only)
Blower 2 tach
--
0
7000
rpm
Displays rotation speed of Blower 2 (GTS systems only)
Blower 3 tach
--
0
7000
rpm
Displays rotation speed of Blower 3 (GTS systems only)
Notes
Systems using potable or softened water control water levels
electronically using a three-rod probe. The controller initiates the
following events when the probes are in contact with water:
High probe: Fill valve closes
Mid probe: Fill valve opens
Low probe: Low water cut-off
The display indicates the probe is in contact with water by indicating
“Water” or “No water.”
The high, mid, and low probe signal counts, displayed on the Status
screen, indicate:
<400 = Probe is properly reading water
400-800 = Faulty water probe (causes a “Faulty water probe” alarm)
800-1200 = Probe requires maintenance (causes a “Clean probes”
message)
>1200 = Probe is dry
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
Blower 4 tach
--
0
7000
rpm
Gas valve 1
--
Open
Closed
--
GTS systems only
Displays rotation speed of Blower 4 (GTS systems only)
Gas valve 2
--
Open
Closed
--
GTS systems only
Gas valve 3
--
Open
Closed
--
GTS systems only
Gas valve 4
--
Open
Closed
--
GTS systems only
Combust air
switch
--
Flow
No Flow
--
GTS systems only
Power vent
switch
--
Open
Closed
--
GTS systems only
Flue pressure
switch
--
Open
Closed
--
GTS systems only
Low water
sensor
--
No water
Water
--
GTS systems only
Note: :PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFST
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
The Diagnostics screen
The Diagnostics screen provides access to system messages, system
data, humidifier information, and test functions.
See the following pages for more information about the Diagnostics
screen.
System messages and the Messages Log
When a system event occurs (e.g., when regularly scheduled unit
servicing becomes due), a system message is added to the Messages
Log (“Service unit”). The Messages Log displays the message name,
date and time of occurrence, plus whether the message is active,
has been cleared by an operator, or auto-cleared by Vapor-logic4.
Active messages display first in the Messages Log, followed by
cleared messages, listed in order of occurrence. The Messages Log
displays up to ten messages. As new messages enter the log, the
oldest, cleared messages leave the log first.
Messages auto-cleared by Vapor-logic4 describe events that have
resolved on their own. For example, a “No airflow” message
appears when there is no airflow in the duct. If airflow returns, the
“No airflow” message auto-clears, but stays in the Messages Log
(per the rules described above) to let the operator know there was
an airflow interruption.
The keypad/display highlights the Message softkey label when
there is a system message. When this occurs, press the Message
softkey to view the Messages Log.
The Web interface displays a link to system messages in the upper
left corner of the screen. Click on the link to view system messages
(see the next page).
See Pages 60-62 for more information about downloading data,
USB backup and restore, and test modes.
Figure 39-1:
Keypad/display screens
SPACE RH
SET PT 212˚F
35%
OUTPUT
59%
TANK A
MODE: Auto
Fillin g
MAIN MESSAGE AL AR M
34%
Press the MESSAGE softkey,
or select Messages from the
Diagnostics menu to view
the Messages Log.
DIAGNOSTICS
2/6
A
Messa g es
Dow nload data
USB backu p/restore
Hu midifier info
Test out p uts
MAIN
HOME
DOWNLOAD DATA
BACK
2/7
A
Alarm histor y
RH histor y
Te m p erature histor y
RH and te m p histor y
Water converted
MAIN
HOME
BACK
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
The Diagnostics screen
Figure 40-1:
Vapor-logic4 Web interface Diagnostics screen
Click on buttons to
activate functions.
View messages by clicking
on “View Messages” on
any screen or by opening
the Diagnostics screen.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Clear messages
by clicking here.
Operation
The Diagnostics screen
Table 41-1:
Diagnostics menu
Minimum
value
Maximum
value
Alarm history
--
--
RH history
--
--
Temperature history
--
--
RH and temp history
--
--
Message history
--
--
Water converted
--
--
Energy used
--
--
Download all data
--
--
Back up settings
No
:FT
Restore settings
No
:FT
Factory string
--
--
Displays as-shipped configuration string
Current string
--
--
Displays current configuration string
Serial number
--
--
Displays humidifier serial number
Firmware version
--
--
Displays current firmware version of Vapor-logic4 control board
Fill valve
--
--
Drain valve
--
--
Fan control
--
--
Programmable triac
--
--
Dry contact relay
--
--
Menu item
Notes
Download data
Download system data here. Select individual data sets or select “Download all” to
download all data sets.
USB backup/restore
Humidifier settings can be backed up to or restored from a USB flash drive.
Humidifier info
Test outputs
Note: :PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFST
Cycles output to verify operation.
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
The Diagnostics screen
Table 42-1:
Diagnostics menu (continued)
Default
value
Minimum
value
Maximum
value
Units
Contactor 1, 2, 3, or 4
--
--
--
--
SSR control
--
--
--
--
Ignition module 1, 2, 3, or 4
--
--
--
--
Blower speed control
--
--
--
--
Power vent control
--
--
--
--
Steam valve
--
--
--
--
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 0 and 30 minutes.
Menu item
Description
Test outputs (continued)
Cycles output to verify operation.
Test run*
Start
Stop
Note:
* 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.
* :PVSTZTUFNNBZOPUIBWFBMMPGUIFTFQBSBNFUFSTMore on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
The Diagnostics screen
Table 43-1:
Diagnostics menu
Messages
Message
Description
Does message auto-clear?
Replace contactors
Contactors have reached normal life span. Replace contactors.
No
Service unit
Regularly scheduled unit servicing is due.
No
Drain pending
Auto drain/flush will occur at next scheduled time.
:FT
No airflow
No duct airflow
:FT
I-lock open
Interlock safety switch is open.
:FT
Freeze drain
Tank has drained to prevent freezing.
:FT
EOS active
The humidifier is draining or has drained and remains inactive until receiving another call for humidity.
:FT
Temp comp on
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.
:FT
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.
:FT
Duct HL span
Duct high limit humidistat has entered the throttle span range and is approaching duct high limit set point.
:FT
No fieldbus sig
There is no signal at the BACnet or Modbus field connection on the Vapor-logic4 board.
:FT
Insufficient water
The low water probe is not in contact with water when there is a demand for humidity.
:FT
Boiling temp
calibrated
Indicates actual humidifier boiling temperature at time of reading. This reading is taken after power-up by
the tank sensor at the time of first steam creation.
:FT
Notes:
t 5IF.FTTBHFT-PHEJTQMBZTNFTTBHFOBNFEBUFBOEUJNFPGPDDVSSFODFQMVTi"DUJWFwi$MFBSFEwPSi"VUPDMFBSFEw
t "DUJWFNFTTBHFTEJTQMBZGJSTUJOUIF.FTTBHFT-PHGPMMPXFECZDMFBSFENFTTBHFTBVUPDMFBSFEBOEPSNBOVBMMZDMFBSFE
MJTUFEJOPSEFSPGPDDVSSFODF
t 5IF.FTTBHFT-PHEJTQMBZTBNBYJNVNPGNFTTBHFT$MFBSFENFTTBHFTMFBWFUIFMPHGJSTU
t *GBNFTTBHFFWFOUPDDVSTBOEJTOPUNBOVBMMZPSBVUPDMFBSFEEVSJOHVOJUPQFSBUJPOUIFNFTTBHFXJMMTUBZUIFSFVOUJMUIFSFJTEFNBOEBOEUIFVOJUJTSVOOJOH
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
The Alarms screen
Figure 44-1:
Keypad/display screens
SPACE RH
SET PT 212˚F
35%
OUTPUT
59%
TANK A
MODE: Auto
Fillin g
MAIN MESSAGE AL AR M
34%
Press the ALARM softkey
when flashing, or select
Alarms from the Main menu
to view the Alarms Log.
The Alarms menu displays system alarms. Using the keypad/
display, go to the Alarms menu by pressing the Alarms softkey
(which will be flashing if there is an Alarm), or by pressing the
Home softkey and then the Alarms softkey. Using the Web
interface, click on the View Alarms link in the upper left corner of
any screen.
System alarms are listed in the Alarms Log. The Alarms Log
displays the alarm name, date and time of occurrence, plus
whether the alarm is active, has been cleared by an operator, or
auto-cleared by Vapor-logic4. The Alarms Log lists active alarms
at the top of the list, followed by cleared alarms. The Alarms Log
holds 30 alarms. As alarms are cleared, they move down the list
below active alarms. When the Alarms list reaches 30 alarms, new
alarms add to the top of the list and the oldest, cleared alarms leave
the list. Alarm information is retained in nonvolatile memory if
the Vapor-logic4 board loses power.
See the table on the next page for alarms and their descriptions
1/2 A
AL AR MS
Water probes
miswired
Manually cleared
02-02-2008 12:23
MAIN
INFO
Alarm causes and recommended actions are listed in the
troubleshooting section in this manual.
CLEAR
Figure 44-2:
Vapor-logic4 Web interface Alarms screen
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
The Alarms screen
Table 45-1:
Alarms menu
Does alarm
auto-clear?
Alarm label
Description
Tank temp sensor failed
Tank temp sensor has failed.
No
RH signal out of range
RH signal is out of range.
:FT
Dew point sig. out of range
Dew point signal is out of range.
:FT
Demand signal
Demand signal is out of range.
:FT
Duct RH signal out of range
Duct RH signal is out of range. Sensor my be faulty.
:FT
Aux temp sens out of range
Auxiliary temp sensor signal is out of range.
:FT
Water probe miswired
Water probe head is miswired or faulty.
:FT
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.
:FT
Excess refill time
Re-filling is taking too long. Top probe is not in contact with water.
:FT
Tank not draining
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.
:FT
Tank overtemp
Fault occurs at boiling temperature plus 25 °F (13 °C). All units are put into a keep-cool state where fill and
drain cycles operate to keep tank cool. Note: Resolve issue, then clear alarm, shut down humidifier, and
restart.
No
Excess water no demand
Humidifier continues to add water when there is no demand, signifying unit continues to make steam. All units
are put into a keep-cool state where fill and drain cycles operate to keep tank water from boiling.
Note: Resolve issue, then clear alarm, shut down humidifier, and restart.
No
No SDU airflow
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.
:FT
No power vent airflow
Pressure switch indicates there is no airflow at the power venter.
:FT
No combustion airflow
Switch indicates the combustion air damper is closed.
:FT
Blocked flue
Flue pressure switch indicates positive pressure in flue. GTS will not ignite when this fault is active.
:FT
Burner 1, 2, 3, or 4 fault
Burner tried one or more times to light and did not succeed. Once this fault is active, Vapor-logic4 locks out the
burner and does not try to light it again until fault is cleared. Other burners can run.
No
Ignition mod. 1, 2, 3, or 4 fault
Ignition module has not opened the gas valve. Once this fault is active, Vapor-logic4 locks out the ignition
module and does not try to start it again until fault is cleared. Other ignition modules can run.
No
Blower 1, 2, 3, or 4 fault
Blower is turning at less than the specified minimum RPM. Unit not allowed to run.
:FT
Gas valve 1, 2, 3, or 4 fault
Gas valve is on when it should be off. Unit not allowed to run.
:FT
Low water
Low water probe is in contact with water and low water sensor is not in contact with water.
:FT
Low input signal current
Demand signal by others current is below minimum threshold.
:FT
Notes:
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%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
The Setup screen
The Setup 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-logic4 software will warn you of this during the setup
process.
See the Pages 24-32 for more information about the Setup screen.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
1*%UVOJOH
Improve humidifier response time with PID tuning
Kp = Proportional gain factor
When your system has a humidity or dew point transmitter, you
can adjust and control the set point through the keypad/display or
Web interface using a proportional, integral, and derivative (PID)
control loop.
Ki = Integral gain factor
Kd = Derivative gain factor
With a PID loop, you can tune your system for maximum
performance using the proportional (Kp), integral (Ki), and
derivative (Kd) gain terms. 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 Setup 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).
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.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
1*%UVOJOH
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.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
1*%UVOJOH
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.
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%.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
1*%UVOJOH
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.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Wa t e r l e v e l c o n t ro l
Probe system
Standard or softened water systems use conductivity probes to
measure and control water level for optimum operating efficiency.
Water conductivity must be at least 100 μS/cm for the probe
system to operate. The three-probe system is monitored by the
Vapor-logic4 board, which performs all the necessary logic and
timing functions to provide total water level control and safety
shutdown.
Vapor-logic4 automatically maintains the water level between the
upper two probes A and B (see figure on this page). When the
water level falls below probe B, the fill valve opens until the water
level reaches the upper probe A. Water must remain in contact
with the probe surface for three seconds for Vapor-logic4 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-logic4 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.
Each time the fill valve energizes, the Vapor-logic4 system tests
the probe system. If the signal from the probe assembly begins to
deteriorate, the “Clean probes” message appears in the Messages
Log. Once the probe system reaches its maximum usable life,
the humidifier shuts down and the “Faulty water probe” alarm
appears.
Figure 51-1:
Water level control for standard
water systems
A: Fill valve closes
B: Fill valve opens
C: Low-water cutoff
Systems using tap or softened water control
water levels electronically using a threerod probe. The controller responds with the
above actions when the water level reaches
each rod.
VLC-OM-030
An adjustable skim time allows for an extended skim period
(0 to 120 seconds) to reduce mineral accumulation. When
skimming, the fill valve remains energized after the water level
reaches the upper probe, A, for the amount of time specified by
the skim duration. The skim duration is adjustable in one-second
intervals through the Setup menu.
Probe C provides low water protection for the heating outputs.
If the water level falls below probe C, the heating outputs are
disabled.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Wa t e r l e v e l c o n t ro l
Float valve system
Figure 52-1:
Water level control for DI/RO
water systems
DI/RO water systems (except for steam injection) use a float valve
system to control water levels for optimum operating efficiency.
DI/RO systems are used where water/steam purity is important,
where demineralized water is needed to improve performance or
lessen maintenance requirements, or where a potable water source
has minimal or no conductivity, thus requiring a float rather than
a probe to sense water levels.
Fill valve
Float rod
The float valve system consists of a fill float and a low water cutoff
float.
Float ball
VLC-OM-026
Figure 52-2:
Low water cutoff switch for DI/RO
water systems
The fill float regulates how much water is added to the tank via a
float ball, float arm, and mechanical valve. The valve is adjusted to
fill the evaporating chamber within ¼" (6 mm) of the overflow port
allowing heated, and therefore expanded, water at startup to fill the
external P-trap.
The low water cutoff float has an electrical switch that closes when
a ready water condition is reached. This float switch provides low
water protection for the heating outputs. If the water falls below the
float, the heating outputs are disabled.
CAUTION! Damage caused by chloride corrosion is not covered by
your DRI-STEEM warranty. Chloride corrosion can result from
improperly functioning deionizing (DI) beds.
A zero mark on top of the float indicates
proper float placement on stem. Switch
is normally open when float ball is at its
lowest point on the stem.
OM-3009
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Duct high limit options
Duct high limit options
When a duct high limit option is ordered, DRI-STEEM provides
either a duct high limit switch or a duct high limit humidity
transmitter (4 to 20 mA output, 0 to 100% RH range) for duct
mounting.
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 Messages Log and
autoclears when duct RH drops below the duct high limit set point.
The modulating high limit transmitter operates in conjunction
with the room/duct controlling transmitter or demand signal
through the Vapor-logic4 control system to prevent excess
humidification in the duct. Vapor-logic4 starts lowering the
humidifier output when the duct relative humidity is within a userdefined 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”
message appears in the Messages Log and the Message label lights
on the keypad/display. 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” message appears in the Messages Log.
When the high relative humidity starts to decrease in the duct,
Vapor-logic4 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 Messages Log automatically clear.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Te m p e r a t u r e c o m p e n s a t i o n
control option, auxiliary temp.
sensor
Temperature compensation control option
When selected as an option, DRI-STEEM provides a temperature
compensation transmitter. The temperature compensation
transmitter continually monitors interior window glass
temperature and transmits this temperature to Vapor-logic4.
Vapor-logic4 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-logic4
automatically decreases the RH set point so moisture does not
form on windows. The Home screen displays the modified RH
set point, and an asterisk (*) appears next to the modified RH set
point, denoting that temperature compensation has taken control
of the RH set point. The “Temp comp on” message appears in the
Messages Log and the Message softkey label becomes highlighted.
When the interior window glass temperature rises above the
dew point, Vapor-logic4 restores system control to the normal
RH set point for the space, and the “Temp comp on” message
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-logic4 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 Setup menu.
Auxiliary temperature sensor
When selected as an option, DRI-STEEM 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”). Temperature history data can also be downloaded
from the download data section of the Diagnostics menu.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Ta n k p r e h e a t i n g a n d a q u a s t a t
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-logic4 controller
overrides the demand signal and heats until the tank temperature
reaches 195 °F (91 °C). 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.
Aquastat operation
The aquastat set point is the minimum tank temperature the
Vapor-logic4 controller maintains when there is no call for
humidity or when safety circuits are not satisfied (e.g., high limit or
airflow proving switch). The aquastat set point is adjusted through
the water management section of the Setup 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) (in
addition to the energy required to cause a phase change from water
to steam) to reach the boiling point and start producing steam.
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,
the tank will be about 70 °F (21 °C). In this situation, when a call
for humidity occurs, the tank needs to warm up 142 °F
(79 °C) to reach the boiling point and begin producing steam.
When an aquastat call is heating the tank, the word “Heating”
appears on the Home screen.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Freeze protection, fan operation,
sensor offsets
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 and the Message softkey label becomes
highlighted.
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-logic4
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
Setup menu).
Sensor offsets
All external transmitters shipped with Vapor-logic4 can be field
calibrated from the Setup menu. For example, if the system is
equipped with an RH transmitter, there is an RH offset setting.
The factory default for all transmitter offset settings is zero. The
sensors that have this adjustment capability are the humidity, duct
high limit, temperature compensation, and dew point transmitters.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Automatic drain sequence operation
Automatic drain sequence for potable water (not softened)
When configured to run a potable water humidifier with an
automatic drain valve, Vapor-logic4 uses an automatic drain
sequence (ADS) to reduce mineral accumulation in the tank and
drain line, which decreases tank maintenance.
The automatic drain sequence 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. The default drain and flush durations
are model-specific and can be adjusted in the water management
section of the Setup menu.
Automatic draining and flushing parameters are defined in the
water management section of the Setup menu. First, automatic
draining and flushing must be enabled. Second, the amount of
water converted to steam before an automatic drain sequence
begins must be defined (Usage). Defaults for this value are modelspecific, and are calculated based on operating 200 hours at 100%
of capacity. Go to the Setup menu to view or change this setting for
your humidifier. 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 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 Setup menu.
Note that the automatic drain sequence is designed for a standard
water system with electric drain and fill valves. Humidifiers using
DI/RO water do not require automatic draining and flushing, but
this feature can be enabled if the humidifier has electric drain and
fill valves.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Draining, skimming
Draining when using softened water
When using softened water draining occurs for a one-minute
duration after a period of time based on 1000 hours of 100%
operation to remove residue from the drain valve mechanism. End
of season draining occurs as described below.
Skim timer
With a potable or softened water configuration, the Vapor-logic4
controller has a skim timer. This timer is activated at the end
of each fill cycle. The timer keeps the fill valve open (for a
user-determined amount of time after the tank has filled) to skim
minerals off the water surface. The skim time is adjusted through
the Setup 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 Setup menu. This option is available only on units
equipped with electric drain and fill valves.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Service interval, date/time,
battery backup
Service interval
The Vapor-logic4 controller tracks the amount of water converted
to steam by the humidifier. When the amount of water converted
to steam exceeds the service interval (a user-defined amount of
water in pounds or kilograms adjusted in the Setup menu), the
“Service unit” message appears in the Messages Log.
The humidifier continues to operate after the message appears.
The message notifies the user that the service interval was reached
and the humidifier should be cleaned. The message remains in the
Messages Log until it is cleared or until the Messages Log adds 10
new messages (the maximum number of messages the log holds).
Setting date and time
The Vapor-logic4 controller contains a real-time clock that is
used for several features including the drain and flush sequence
and alarm logging. If you need to reset the date or time, go to the
Setup menu. The date and time will need to be reset whenever
the Vapor-logic4 controller has been powered off for more than
72 hours, such as when starting up at the beginning of the
humidification season.
Battery backup, nonvolatile memory
If there is a power outage, date and time settings will be saved for
72 hours. Alarms, unit configuration, and usage timers will remain
in nonvolatile memory indefinitely.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
S e c u r i t y, d o w n l o a d i n g d a t a , a n d
data backup and restore
Security/password
To control who can change Vapor-logic4 settings, enable the
security function and define a password in the Setup menu. Enter
four digits, numbers only, and define the time-out period (minutes
of inactivity before Vapor-logic4 reverts to read-only mode). The
Web interface and the keypad/display can have separate passwords.
Important: Write down this password and keep in a secure location.
Downloading historical data
Vapor-logic4 retains the following data sets:
t 3)IJTUPSZTFWFOSPMMJOHEBZTPGEBUBBDRVJSFEBUPOFNJOVUF
intervals)
t 5FNQFSBUVSFIJTUPSZTFWFOSPMMJOHEBZTPGEBUBBDRVJSFEBUPOF
minute intervals)
t 3)BOEUFNQFSBUVSFIJTUPSZTFWFOSPMMJOHEBZTPGEBUBBDRVJSFE
at one-minute intervals)
t 8BUFSDPOWFSUFEQPVOETLJMPHSBNTPGXBUFSDPOWFSUFEUPTUFBN
since last reset)
t &OFSHZVTFEL8IPVSTPSUIFSNTVTFETJODFMBTUSFTFU
To download data, go to the download data section of the
Diagnostic screen.
Data backup and restore
Vapor-logic4 data can be backed up to 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.
To create a backup file:
1. Insert a USB flash drive into the USB port on the Vapor-logic4
board.
2. Go to Diagnostics/USB backup-restore/Back up settings
3. Select Yes. The backup process is complete when LED-2 (see
Figure 61-1) illuminates.
To restore from a backup file:
1. Insert the USB flash drive with that humidifier’s backup file
into the USB port on the Vapor-logic4 board.
2. Go to Diagnostics/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.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Firmware updates
Firmware updates
1. Obtain the firmware update file from your DRI-STEEM representative
or distributor. The update file will be titled DRI-STEEM_vl4_update_
ver_x.x.x.zip. Save this file and note the location where you have saved
the file.
2. Locate the file just saved and double click on the file (DRI-STEEM_
vl4_update_ver_x.x.x.zip); Windows Explorer should open a window
that has the firmware update folder titled vl4_update.
Note: If Windows Explorer does not open when you double-click on the
file named DRI-STEEM_vl4_update_ver_x.x.x.zip, see the instructions
below about unzipping files.
Figure 61-2:
Copying the vl4_update folder
Copy the vl4_update folder from the new downloaded DRI-STEEM_vl4_update_ver_x.x.x.zip
folder to the root directory of a USB flash drive.
Important: Do not change the name of the vl4_update folder.
LED-1 (power indicator)
LED-2
Top Mid Low
either delete the folder or rename it prior to saving the latest update folder
on the USB flash drive. Do not overwrite its contents.
Important: Remove the USB flash drive after LED-2 or the display illu-
minates on and off. If power is cycled again while the USB is inserted, the
upgrade process repeats and must be allowed to complete before the USB
is removed.
9. Verify the firmware update is complete by going to the Humidifier
info section of the Diagnostics screen on the keypad/display or Web
interface. The firmware version should now match the version number
of the _vl4vx.x.x file inside of the new vl4_update folder.
10. Update the clock/calendar to today’s date.
P3
P4
AI2
TT lsw
FPsw LW BT1 GV1
P2
4. Place the humidifier system in Standby mode.
5. Insert the USB flash drive loaded with the firmware update folder into
the USB port on the Vapor-logic4 board.
6. Disconnect power to the Vapor-logic4 board.
7. Reconnect power to the Vapor-logic4 board.
8. Wait for LED-2 (closest to P1 on the Vapor-logic4 board; see Figure
61-2) or the display to illuminate on and off, and then remove the USB
flash drive. The update has now been loaded on to the Vapor-logic4
board.
CAUTION! DO NOT REMOVE THE USB FLASH DRIVE BEFORE
LED-2 OR THE DISPLAY ILLUMINATES ON AND OFF. Doing so can
corrupt the update and may render the control board useless. If in doubt,
make sure the version number on the display (when available) matches the
version number of the _vl4vx.x.x file inside of the new vl4_update folder.
Or wait five (5) minutes from when the power was turned on to remove
the USB flash drive.
P1
Important: If the USB flash drive already has a folder named vl4_update,
Figure 61-1:
LED-2 location on Vapor-logic4 board
24VAC
3. Copy the unzipped folder (vl4_update) to the root directory of a USB
flash drive with at least 16 megabytes of free space, as shown in Figure
61-1. Do not put it inside of any folder on the USB flash drive.
How to unzip a file
If you are using Windows XP, then your operating system has built-in support for Zip files,
and the instructions above should work for
unzipping a file. If the above instructions do
not work for opening the DRI-STEEM_vl4_
update_ver_x.x.x.zip file, then you may need
to install a special application. One application
that has a free download is available at http://
www.winzip.com/prod_down.htm
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Te s t o u t p u t s , t e s t r u n
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 Diagnostics 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-logic4 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 Diagnostics 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.
mc_102108_1350
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
M o d b u s , B A C n e t , L o n Ta l k
interoperability
Introduction
Using defined system variables, Vapor-logic4 can communicate
with building automation systems using Modbus, its native
language, or by using optional BACnet or LonTalk. These variables
are defined in the tables on the following pages.
Figure 63-1:
LON ProtoCessor module installation
1. Remove LON ProtoCessor
module from box.
Configuring and installing interoperability
1. Modbus is preconfigured, and is the default. To enable
BACnet or LonTalk, use either the keypad/display or the Web
interface and go to the Communications section of the Setup
menu. (Note: This step is completed at the factory when a
humidification system is ordered with interoperability.)
2. Insert LON ProtoCessor module into
pins on Vapor-logic4 board.
Note: For retrofit BACnet or LonTalk installations, contact your
local DRI-STEEM representative or DRI-STEEM to purchase a
BACnet or LonTalk upgrade.
Bottom of LON
ProtoCessor
module
2. If connecting to a Modbus or BACnet system, connect Modbus
or BACnet system wiring to terminal P7 on the Vapor-logic4
board (positive to positive, negative to negative).
3. If connecting to a LonTalk system, all wiring is connected at the
factory when a humidification system is ordered with LonTalk.
If installing LonTalk as a retrofit (see Figure 63-1):
1.
Turn off power to the unit.
2. Plug LON ProtoCessor module into mounting pins as
shown with LonTalk connector at the edge of the board.
3.
Connect LonTalk system wires to LON ProtoCessor
module as shown is Step 3 at right.
Vapor-logic4 board
4. Turn on power to the unit.
5.
Use either the keypad/display or Web interface go to the
Communications section of the Setup menu to enable
LonTalk communication.
3. Connect wiring from LonTalk system to
LON ProtoCessor module on
Vapor-logic4 board.
Note: Make sure all pins are seated in the connector. Make
sure the LON ProtoCessor module is installed as shown at
right, with LonTalk connector at the edge of the board.
4. Set up communication with Vapor-logic4 using your Modbus,
BACnet, or LonTalk network manager, referencing the tables on
the following pages.
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 4 board.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
M o d b u s , B A C n e t , L o n Ta l k
interoperability
Table 64-1:
Interoperability variable and object names
Variable name and
BACnet object name
Read Only
(RO) or
Read Write
(RW)
Modbus
register
number
BACnet
Object
Type and
Instance
LonTalk variable
names
Space_RH
RO
IR-1
AI-01
nvoSpaceRH
Space_dew_point
RO
IR-2
AI-02
Duct_RH
RO
IR-3
Steam_demand_mass
RO
Steam_demand_percent
Description
Units
Range
I-P
units
SI units
I-P units
SI units
Read the relative
humidity content of the
air in the space being
humidified.
%
%
0 to 100
0 to 100
nvoSpaceDewPoint
Read the dew point of
the air in the space being
humidified.
ºF
ºC
20 to 80
-6 to 26
AI-03
nvoDuctRH
Read the relative
humidity content of the
air in the duct.
%
%
0 to 100
0 to 100
IR-4
AI-04
nvoSteamDmndMass
Read the steam demand
in pounds or kilograms
per hour.
lbs/hr
kg/h
0 to
100,000
0 to
100,000
RO
IR-5
AI-05
nvoSteamDemand%
Read the steam demand
as a percentage of
the humidifier’s total
capacity.
%
%
0 to 100
0 to 100
Aux_temp
RO
IR-6
AI-06
nvoAuxTemp
Read the temperature of
the auxiliary temperature
sensor.
ºF
ºC
-20 to 160
-29 to 170
Tank_temp
RO
IR-7
AI-07
nvoTankTemp
Read the temperature
of the water in the
humidifier’s evaporating
chamber.
ºF
ºC
-240 to
265
-151 to
129
nvoSteamOutMass
Read the estimated
amount of steam the
humidifier is producing
in pounds or kilograms
per hour.
lbs/hr
kg/h
0 to
100,000
0 to
100,000
nvoSteamOutput%
Read the estimated
amount of steam the
humidifier is producing
as a percentage of
the humidifier’s total
capacity.
%
&
0 to 100
0 to 100
nvoWaterUntilADS
Read the pounds or
kilograms of water
remaining to be
converted to steam
before the next
automatic drain
sequence (ADS) cycle.
lbs
kg
0 to
2,200,000
0 to
1,000,000
nvoWaterTilSrvc
Read the pounds or
kilograms of water
remaining to be
converted to steam
before the next service
cycle.
lbs
kg
0 to
2,200,000
0 to
1,000,000
Read-only analog variables
Steam_output_mass
Steam_output_percent
Water_until_ADS
Water_until_service
RO
RO
RO
RO
IR-8
IR-9
IR-10
IR-11
AV-1
AV-2
AV-3
AV-4
More on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
M o d b u s , B A C n e t , L o n Ta l k
interoperability
Table 65-1:
Interoperability variable and object names
Variable name and
BACnet object name
Read Only
(RO) or
Read Write
(RW)
Modbus
register
number
BACnet
Object
Type and
Instance
LonTalk variable
names
Description
Units
Range
I-P
units
SI units
I-P units
SI units
nviRunMode
Set the current mode of
the unit or system. The
defined options are:
1 Auto
2 Local standby
3 System standby
4 Manual drain
--
--
1 to 4
1 to 4
nvoRunMode
Read the current 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
--
--
1 to 6
1 to 6
Set or read the humidity
set point for the space
being humidified.
%
%
0 to 100
0 to 100
%
%
0 to 100
0 to 100
Set or read the dew point
set point for the space
being humidified.
ºF
ºC
20 to 80
-6 to 26
ºF
ºC
20 to 80
-6 to 26
%
%
0 to 100
0 to 100
%
%
0 to 100
0 to 100
nviFbusDemndMass
Set the steam output
(as demanded via the
fieldbus) as a percentage
of the humidifier’s total
capacity.
lbs/hr
kg/h
0 to
100,000
0 to
100,000
Set the 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.
%
%
0 to 100
0 to 100
Setup variables
Write
HR-1
MSV-01
Run_mode
Read
HR-1
MSV-01
Write
HR-2
AV-05
nviSpaceRHsetPt
Read
HR-2
AV-05
nvoSpaceRHsetPt
Write
HR-3
AV-06
nviSpaceDewPtSP
Read
HR-3
AV-06
nvoSpaceDewPtSP
Write
HR-4
AV-07
nviDuctHLsetPt
Read
HR-4
AV-07
nvoDuctHLsetPt
Space_RH_set_point
Space_dew_point_set_point
Duct_high_limit_set_point
Fieldbus_demand_mass
Fieldbus_demand_%
PID_band
Write Only
HR-5
AV-08
Set or read the duct high
limit set point.
Write Only
HR-6
AV-09
nviFldBusDemand%
RW
HR-7
AV-10
nciPIDband
Set the PID band.
%
%
0 to 50
0 to 50
--
--
0 to 1000
0 to 1000
PID-Kp
RW
HR-8
AV-11
nciPIDkp
Set the PID-Kp
(proportional gain)
factor.
PID-Ki
RW
HR-9
AV-12
nciPIDki
Set the PID-Ki (integral
gain) factor.
--
--
0 to 1000
0 to 1000
PID-Kd
RW
HR-10
AV-13
nciPIDkd
Set the PID-Kp
(derivative gain) factor.
--
--
0 to 1000
0 to 1000
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
M o d b u s , B A C n e t , L o n Ta l k
interoperability
Table 66-1:
Interoperability variable and object names
Variable name and
BACnet object name
Read Only
(RO) or
Read Write
(RW)
Modbus
register
number
BACnet
Object
Type and
Instance
LonTalk variable
names*
Airflow_proving_switch
RO
DI-1
BI-01
nvoAirflowSwitch
Duct_HL_switch
RO
DI-2
BI-02
Safety_interlock
RO
DI-3
Combustion_air_damper_
(GTS)
RO
Flue_pressure_switch_(GTS)
Description
Units
Range
I-P
units
SI units
I-P units
SI units
0=Open; 1=Closed
--
--
--
--
nvoDuctHLswitch
0=Open; 1=Closed
--
--
--
--
BI-03
nvoSafetyI-lock
0=Open; 1=Closed
--
--
--
--
DI-4
BI-04
nvoCombustAirDmp
0=Damper Closed;
1=Damper Open
--
--
--
--
RO
DI-5
BI-05
nvoFluePressurSw
0=Open; 1=Closed
--
--
--
--
Power_vent_switch_(GTS)
RO
DI-6
BI-06
nvoPowerVentSwch
0=Vent Off; 1=Vent On
--
--
--
--
Low_water_sensor_ (GTS)
RO
DI-7
BI-07
nvoLowWaterSensr
0=No Water; 1=Water
--
--
--
--
Fill_valve
RO
DI-8
BO-01
nvoFillValve
0=Closed; 1=Open
--
--
--
--
--
--
--
--
Read-only digital I/O
RO
DI-9
BO-02
nvoDrainValve
0=Not Draining;
1=Draining
Active_messages_exist
RO
DV-1
BV-01
nvoMessages
Flags all active messages
--
--
--
--
Active_auto_cleared_alarms_
exist
RO
DV-2
BV-02
nvoAlarms1
Flags all auto-cleared
alarms
--
--
--
--
Active_manually_cleared_
alarms_exist
RO
DV-3
BV-03
nvoAlarms2
Flags all manually
cleared alarms
--
--
--
--
Clear_all_faults
RW
DV-4
BV-04
nviClearAllFaults
When set will clear all
active faults
--
--
--
--
Alarm_tank_temp_sensor_
failed
RW
DV-5
BV-05
nvoAlrmTnkTmpSen
See Alarms menu.
--
--
--
--
Alarm_tank_overtemp
RW
DV-6
BV-06
nvoAlrmOvertemp
See Alarms menu.
--
--
--
--
nvoAlrmRHsignal
See Alarms menu.
--
--
--
--
nvoAlrmDewPtSgnl
See Alarms menu.
--
--
--
--
nvoAlrmDemndSgnl
See Alarms menu.
--
--
--
--
Drain_valve
Faults and alarms
Alarm_RH_signal_out_of_
range
Alarm_dew_pt_sig_out_of_
range
RW
DV-7
BV-07
Alarm_demand_sig_out_
of_range
Alarm_duct_RH_sig_out_
of_range
RW
DV-8
BV-08
nvoAlrmDuctRHsig
See Alarms menu.
--
--
--
--
Alarm_aux_temp_sens_out_
of_rnge
RW
DV-9
BV-09
nvoAlrmAuxTemp
See Alarms menu.
--
--
--
--
Alarm_water_probe_
miswired
RW
DV-10
BV-10
nvoAlrmProbeWire
See Alarms menu.
--
--
--
--
Alarm_water_probe_failed
RW
DV-11
BV-11
nvoAlrmProbeFail
See Alarms menu.
--
--
--
--
Note:
* nvi LonTalk SNVT’s are write-only; nvo are read-only
More on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
M o d b u s , B A C n e t , L o n Ta l k
interoperability
Table 67-1:
Interoperability variable and object names
Variable name and
BACnet object name
Read Only
(RO) or
Read Write
(RW)
Modbus
register
number
BACnet
Object
Type and
Instance
LonTalk variable
names*
Description
Units
Alarm_excess_fill_time
RW
DV-12
BV-12
nvoAlrmFillTime
See Alarms menu.
--
--
--
--
Alarm_excess_refill_time
RW
DV-13
BV-13
nvoAlrmRefilTime
See Alarms menu.
--
--
--
--
Alarm_tank_not_draining
RW
DV-14
BV-14
nvoAlrmNoDrain
See Alarms menu.
--
--
--
--
Alarm_excess_water_no_
demand
RW
DV-15
BV-15
nvoAlrmXessWater
See Alarms menu.
--
--
--
--
Alarm_no_SDU_airflow
RW
DV-16
BV-16
nvoAlrmNoSDUair
See Alarms menu.
--
--
--
--
Alarm_no_power_vent_
airflow
RW
DV-17
BV-17
nvoAlrmPrVentAir
See Alarms menu.
--
--
--
--
Alarm_no_combustion_
airflow
RW
DV-18
BV-18
nvoAlrmNoCombAir
See Alarms menu.
--
--
--
--
Alarm_blocked_flue
RW
DV-19
BV-19
nvoAlrmBlockdFlu
See Alarms menu.
--
--
--
--
Alarm_burner_1_failed
RW
DV-20
BV-20
nvoAlrmBurner1
See Alarms menu.
--
--
--
--
Alarm_burner_2_failed
RW
DV-21
BV-21
nvoAlrmBurner2
See Alarms menu.
--
--
--
--
I-P
units
Range
SI units
I-P units
SI units
Faults and alarms (cont.)
Alarm_burner_3_failed
RW
DV-22
BV-22
nvoAlrmBurner3
See Alarms menu.
--
--
--
--
Alarm_burner_4_failed
RW
DV-23
BV-23
nvoAlrmBurner4
See Alarms menu.
--
--
--
--
Alarm_ignition_module_1_
failed
RW
DV-24
BV-24
nvoAlrmIgnitMod1
See Alarms menu.
--
--
--
--
Alarm_ignition_module_2_
failed
RW
DV-25
BV-25
nvoAlrmIgnitMod2
See Alarms menu.
--
--
--
--
Alarm_ignition_module_3_
failed
RW
DV-26
BV-26
nvoAlrmIgnitMod3
See Alarms menu.
--
--
--
--
Alarm_ignition_module_4_
failed
RW
DV-27
BV-27
nvoAlrmIgnitMod4
See Alarms menu.
--
--
--
--
Alarm_blower_1_failed
RW
DV-28
BV-28
nvoAlrmBlower1
See Alarms menu.
--
--
--
--
Alarm_blower_2_failed
RW
DV-29
BV-29
nvoAlrmBlower2
See Alarms menu.
--
--
--
--
Alarm_blower_3_failed
RW
DV-30
BV-30
nvoAlrmBlower3
See Alarms menu.
--
--
--
--
Alarm_blower_4_failed
RW
DV-31
BV-31
nvoAlrmBlower4
See Alarms menu.
--
--
--
--
Alarm_gas_valve_1_failed
RW
DV-32
BV-32
nvoAlrmGasValve1
See Alarms menu.
--
--
--
--
Alarm_gas_valve_2_failed
RW
DV-33
BV-33
nvoAlrmGasValve2
See Alarms menu.
--
--
--
--
Alarm_gas_valve_3_failed
RW
DV-34
BV-34
nvoAlrmGasValve3
See Alarms menu.
--
--
--
--
Alarm_gas_valve_4_failed
RW
DV-35
BV-35
nvoAlrmGasValve4
See Alarms menu.
--
--
--
--
Alarm_low_water
RW
DV-36
BV-36
nvoAlrmLowWater
See Alarms menu.
--
--
--
--
Alarm_low_signal_current
RW
DV-37
BV-37
nvoAlrmDrivemA
See Alarms menu.
--
--
--
--
Note:
* nvi LonTalk SNVT’s are write-only; nvo are read-only
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
M o d b u s , B A C n e t , L o n Ta l k
interoperability
Table 68-1:
Interoperability variable and object names
Variable name and
BACnet object name
Read Only
(RO) or
Read Write
(RW)
Modbus
register
number
BACnet
Object
Type and
Instance
LonTalk variable
names*
Message_replace_contactors
RW
DV-38
BV-38
nvoMsgReplCntctr
Message_service_unit
RW
DV-39
BV-39
Message_drain_pending
RW
DV-40
Message_no_duct_airflow
RW
Message_interlock_open
Description
Units
Range
I-P
units
SI units
I-P units
SI units
See Messages menu.
--
--
--
--
nvoMsgSrviceUnit
See Messages menu.
--
--
--
--
BV-40
nvoMsgDrainPend
See Messages menu.
--
--
--
--
DV-41
BV-41
nvoMsgNoDuctAir
See Messages menu.
--
--
--
--
RW
DV-42
BV-42
nvoMsgIlockOpen
See Messages menu.
--
--
--
--
Message_freeze_prevent_
draining
RW
DV-43
BV-43
nvoMsgFreezDrain
See Messages menu.
Message_end-of-season_
active
RW
DV-44
BV-44
nvoMsgEOSactive
See Messages menu.
--
--
--
--
Message_temp_comp_on
RW
DV-45
BV-45
nvoMsgTempCompOn
See Messages menu.
--
--
--
--
Message_clean_probes
RW
DV-46
BV-46
nvoMsgCleanProbe
See Messages menu.
--
--
--
--
Message_duct_HL_trip
RW
DV-47
BV-47
nvoMsgDuctHLtrip
See Messages menu.
--
--
--
--
Message_duct_HL_span
RW
DV-48
BV-48
nvoMsgDuctHLspan
See Messages menu.
--
--
--
--
Message_insufficient_water
RW
DV-49
BV-49
nvoMsgH2Ocutout
See Messages menu.
--
--
--
--
Message_boiling_temp_
calibrated
RW
DV-50
BV-50
nvoMsgBoilTempCl
See Messages menu.
--
--
--
--
Messages
Note:
* nvi LonTalk SNVT’s are write-only; nvo are read-only
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Multiple-tank operation
Introduction: One master controller, multiple slave tanks
Vapor-logic4 has the capability to operate multiple DRI-STEEM
humidifier tanks under the control of one Vapor-logic4 controller.
This is called operating in multi-tank mode.
A multi-tank system has one master controller controlling up to 16
humidifier slave tanks. The master controller receives the demand
signal, and controls slave tank steam production based on:
— Priority group
— Wear leveling
— Fault status
Important: All multi-tank communication
must go through the master controller
to reach slave tanks. Therefore, the
master controller must be powered for
communication to occur, even if the keypad/
display is connected to a slave tank for
communicating only with that slave tank.
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 and be programmed with the system capacity.
The control interface in a multi-tank group can be the Vapor-logic4
keypad or the Web interface. There is one Vapor-logic4 keypad
per multi-tank group. This keypad ships attached to the tank
with the master control board. The keypad or Web interface can
be connected to any humidifier in the multi-tank group or to a
separate master controller that is not tank mounted. Maximum
cable length from the keypad to any control board in the multitank group is 500' (152 m).
Priority groups
All humidifier tanks in a multi-tank group are assigned to a
priority group. There are four priority groups: 0, 1, 2, and 3.
The purpose of priority groups is to identify tanks as trim tanks
or redundant tanks, and/or to define fuel or other preferences. The
default configuration assigns all tanks to priority group 1 where all
tanks operate with equal priority.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Multiple-tank operation
Priority groups
Vapor-logic4 assigns humidifiers a priority
group number. These numbers identify tank
function as follows:
0 = Trim tank
1 = Default tank configuration
3 = Redundant tank
Note that Priority Group 2 is currently
unassigned.
Trim tanks
A tank functioning as a trim tank is assigned to priority group 0
and always operates before tanks in priority groups 1, 2, or 3.
The function of a trim tank is to be the first tank in a multi-tank
group to respond 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.
Redundant tanks
The system capacity of a multi-tank group is the combined
capacity of tanks in groups 0, 1, and 2. A tank functioning as a
redundant tank is assigned to priority group 3 and operates only if
one or more of the tanks in groups 0, 1, or 2 is not available and the
multi-tank group cannot meet the demand for steam production.
Placing a tank in priority group 3 ensures that it only runs as a
redundant tank.
Because a redundant tank operates infrequently, assigning master
controller status to the redundant tank in a multi-tank group
reduces system down time while the master controller tank
receives servicing.
Tank wear leveling
The master controller monitors tank wear and assigns steam
production to tanks to equalize wear as much as possible within
the multi-tank group.
Fault tolerance
All tanks in a multi-tank group periodically send a status message
to all other tanks in the multi-tank group. If this message is not
received by the other tanks within a defined time period, the tank
is assumed to be unavailable to the remaining tanks in the group.
The newly unavailable tank will be taken off the list of available
tanks and the system will respond appropriately. If the unavailable
tank is the master controller, the remaining slaves will continue to
run for a short time at the level they were last told to run, and then
quit.
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Multiple-tank operation
Configuring multi-tank systems
Humidifier tanks ordered as a multi-tank group are configured at
the factory. The configuration process includes:
t "TTJHOJOHMFUUFSOBNFTUPUBOLT
t "TTJHOJOHQSJPSJUZHSPVQOVNCFST
t $POGJHVSJOHUIFNBTUFSDPOUSPMMFS
Wiring a multi-tank group of humidifiers
This section describes making wiring connections for multi-tank
systems. To wire a multi-tank group of humidifiers:
1. Determine which control board is the master controller. The
master controller ships connected to the keypad/display. The
master controller is labeled as Tank A on the keypad/display.
2. Connect all required control inputs to the master controller
board by following the instructions in the installation wiring
section of this manual.
3. Wire all control boards of the multi-tank group together
using twisted pair 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, change the switch labeled “SW1” (located on
the Vapor-logic4 board next to P8) to the On position.
4. Connect the keypad/display and/or Web interface cable to any
control board in the multi-tank system.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Multiple-tank operation
Using the keypad/display with a multi-tank group
The keypad/display communicates with every humidifier tank’s
controller in the multi-tank group. When a multi-tank group is
operating normally, the keypad/display shows the Multi-tank
System Home screen. See the screens below for information about
display screens in a multi-tank system.
Multi-tank System Home screen
SPACE RH
SET PT
35%
OUTPUT
0%
TANK A
MULTI-TANK HOME
MESSAGE AL AR M
34%
Select other tanks in the multi-tank system here.
Tank A screen always shows system parameters.
Individual tank screen
Press the Main softkey to view
or change Tank B settings. Note
here that Tank B has 0% output
and is filling.
DEMAND
OUTPUT
23%
0%
173˚F
TANK B
MODE: Auto
Fillin g
MAIN MESSAGE AL AR M
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Tr o u b l e s h o o t i n g i n t r o d u c t i o n
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 DRI-STEEM.
If the troubleshooting guide does not help you solve your issue,
call DRI-STEEM with the following information available:
t 1SPEVDUOBNFBOETFSJBMOVNCFS
You’ll find this information on the humidifier or control
cabinet.
t *TTVFEFGJOJUJPO
Example: water leaking, low humidity, high humidity, etc.
t "MBSNTPS.FTTBHFT-PHJUFNTJGBQQMJDBCMF
Example: Tank temp, probe wiring, etc.
t 5JNFJTTVFCFHBO
Example: Always, after remodel, after a change in weather, etc.
t 4ZTUFNDIBOHFT
Example: Pressure, new boiler, new service, new controller,
relocation, change in maintenance, etc.
Calling DRI-STEEM technical support
Have the following information ready before
calling technical support.
Humidifier model number ___________________________________________________________________________________
Humidifier serial number ___________________________________________________________________________________
Issue definition ___________________________________________________________________________________________
Alarms Log items _________________________________________________________________________________________
Messages Log items _______________________________________________________________________________________
Time issue began _________________________________________________________________________________________
Recent system changes _____________________________________________________________________________________
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Tr o u b l e s h o o t i n g g u i d e
Table 74-1:
Troubleshooting guide
Issue
Green power indicator light is off.
Power issues
No remote indication of alarm light
No remote activation of fan
No readable information on keypad/display
Keypad/display does not energize.
Display is completely black.
Possible causes
Actions
t /PDPOUSPMWPMUBHF
t $IFDLGPSQSPQFSTVQQMZWPMUBHF
t )FBUFSGVTFTPQFO
t $IFDLIFBUFSGVTFTGPSWPMUBHFQSFTFOUBU
transformer.
t 5SBOTGPSNFSTFDPOEBSZDJSDVJUCSFBLFSUSJQQFE
t $IFDLGPSXJSJOHTIPSUTSFTFUCSFBLFS
t %SZDPOUBDUPSUSJBDDPOOFDUJPOOPUQSPHSBNNFE
from Setup menu
t (PUPUIFQSPHSBNNBCMFPVUQVUTTFDUJPOPG
Setup menu to program dry contact and/or 24
VAC triac.
t 'JFMEXJSJOHOPUJOTUBMMFE
t 1SPWJEFGJFMEXJSJOHUPBSFNPUFGBVMUJOEJDBUPS
from the dry contact connection point on
terminal block P12 or from the triac connection
point on terminal block P16.
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burned out
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replace if needed.
t 3FNPUFGBVMU7BQPSMPHJDESZDPOUBDUJTOPU
switching
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terminal P12) for contact closure.
t /PQPXFSPSJODPSSFDUWPMUBHFUP7BQPSMPHJD
board
t $IFDLNBJOQPXFSTVQQMZ
t 3FTFUDPOUSPMUSBOTGPSNFSDJSDVJUCSFBLFSJG
tripped.
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enclosure only).
t .PEVMBSDPNNVOJDBUJPODBCMFJTEJTDPOOFDUFE
t $POOFDUNPEVMBSDBCMF
t /POFYJTUFOUTVQQMZWPMUBHFUPVOJU
t $IFDLNBJOGVTF
t $IFDLNBJOMJOFTBGFUZTXJUDIFT
t $IFDLIFBUFSGVTFT
t /POFYJTUFOU7"$TVQQMZ
t $IFDLGPSQSPQFSTVQQMZ
t 7FSJGZQSPQFSUSBOTGPSNFSWPMUBHF
characteristics.
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t $IFDLGPSDPOUSPMDJSDVJUWPMUBHF7"$*G
voltage is not present, check transformer circuit
breaker. Reset if needed.
t )VNJEJGJFSPWFSUFNQFSBUVSFUIFSNPTUBUPQFO
t 3FTFUNBOVBMTXJUDIMPDBUFEBCPWFIFBUFS
below terminal cover.
t ,FZQBEEJTQMBZJTPWFSIFBUFE
t $PPMUIFLFZQBE
t$PNNVOJDBUJPODBCMFOPUDPOOFDUFE
t$POOFDUDBCMF
t%FGFDUJWFDBCMF
t3FQMBDFDBCMF
t%FGFDUJWFLFZQBE
t3FQMBDF
t%FGFDUJWFDPOUSPMCPBSE
t$POUBDU%3*45&&.
More on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Tr o u b l e s h o o t i n g g u i d e
Table 75-1:
Troubleshooting guide
Issue
Transmitter or humidistat issues
Alarm:
RH signal out of range
Alarm:
Dew point signal out of range
Possible causes
Actions
When transmitter or humidistat alarms appear,
possible causes are:
t 0QFOTIPSUFEPSJODPSSFDUXJSJOH
t *ODPSSFDUTJHOBM
t (SPVOEMPPQ
t 4JHOBMFYDFFETSBOHFMJNJUT$PSSFDUJOQVU
signals are: 4-20 mA, or 0-10 VDC
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At terminal P11
-- RH signal: 2-10 VDC.
-- Dew point signal: 2-10 VDC.
-- Demand signal: 0-10 VDC.
At terminal P13
-- Duct high limit signal: 0-24 VDC, 2-10 VDC.
At terminal P14
-- Auxiliary temp sensor or temperature
compensation sensor: 2-10 VDC.
t $IFDLPVUQVUPOUSBOTNJUUFS
-- If there is no output, replace transmitter.
-- Verify output is 4-20 mA.
-- Calibrate transmitter or humidistat
if necessary.
t *TPMBUJPODPOUSPMCPBSECZPUIFSTNBZOPUCFDPNQBUJCMF$POTVMU
DRI-STEEM.
Alarm:
Demand signal out of range
Alarm:
Duct RH signal out of range
Alarm:
Aux temp sens out of range
Alarm:
No SDU airflow
t 4%6CMPXFSPSBJSGMPXQSPWJOHTXJUDIJT
incorrectly wired
t $IFDL4%6GPSQSPQFSXJSJOH
t 4%6CMPXFSDPWFSJTPGG
t *OTUBMMDPWFS
t 4%6CMPXFSNPUPSJTJOPQFSBCMF4%6GBOEPFT
not start)
t 3FQMBDF4%6CMPXFS
t#SFBLFSUSJQQFE
t3FTFUCSFBLFS
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Tr o u b l e s h o o t i n g g u i d e
Table 76-1:
Troubleshooting guide
Issue
Possible causes
Actions
Alarm:
Water probe miswired
t *ODPSSFDUJOTUBMMBUJPO
t 7FSJGZQSPQFSXJSJOHPGQSPCFTZTUFN Do not use shielded
(screened) wiring.
t 7FSJGZQSPCFXJSJOHJTOPUSPVUFEXJUIIJHIWPMUBHFXJSJOH
t 7FSJGZXJSJOHCFUXFFODPOUSPMDBCJOFUBOEIVNJEJGJFSEPFTOPU
exceed the recommended 50' (15 m) limit.
t 7FSJGZGJMMBOEESBJOQMVNCJOHXBTJOTUBMMFEQFSUIFJOTUSVDUJPOTJO
the humidifier's manual.
t 7FSJGZQJQJOHGSPNUIFIVNJEJGJFSUPUIFEJTQFSTJPOBTTFNCMZJT
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.
t 7FSJGZUIFSFJTB1USBQJOTUBMMFEPOUIFUBOLBOEPSUIBUUIF1USBQ
is not plugged.
t 7FSJGZUIBUUIFSFJTBNBDIJOFHSPVOECFUXFFODPOUSPMDBCJOFU
and humidifier tank.
t %JSUZPSPYJEJ[FEQSPCFT
t $MFBOQSPCFSFNPWJOHPYJEBUJPOBOEPSNJOFSBMTPSSFQMBDFJG
needed.
t %SBJOUBOLXBUFSUPCFMPXUIFQSPCFSFTFUTZTUFNBOESFTUBSU
t %FUFSJPSBUJPOPGQSPCFSPEBTTFNCMZ
t 3FQMBDFQSPCFSPEBTTFNCMZ
t -PXDPOEVDUJWJUZXBUFSTVQQMZ
t *GDPOEVDUJWJUZJTMFTTUIBO˜4DNBEEž›UBCTPEJVN
bicarbonate (i.e., Alka Seltzer) to increase conductivity. Consult
DRI-STEEM for further advice.
t )VNJEJGJFSJOUFSMPDLTXJUDIFTBOEPSPWFS
temperature thermostat
t 7FSJGZUIBUTXJUDIPSUIFSNPTUBUJTXJSFE
t 7FSJGZJOUFSMPDLTXJUDIJTTFUDPSSFDUMZBOEIVNJEJGJFSDPWFSJTPO
t 3FTFUPWFSUFNQFSBUVSFUIFSNPTUBUJGUSJQQFE
t .JTTJOHQSPCFSPE
t 3FQMBDFNJTTJOHQSPCFSPEJGQPTTJCMFPUIFSXJTFSFQMBDFQSPCF
assembly.
Water level control probe issues
Alarm:
Faulty water probe
More on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Tr o u b l e s h o o t i n g g u i d e
Table 77-1:
Troubleshooting guide
Possible causes
Alarm:
Excessive fill time
Tank is not full.
t 'JMMBOEESBJOWBMWFXJSJOHSFWFSTFE
t$PSSFDUXJSJOH
Alarm:
Excessive refill time
t -PXXBUFSTVQQMZQSFTTVSF
t7FSJGZXBUFSQSFTTVSFJTQTJ<L1B>NJOJNVN
Filling issues
Issue
Actions
t *OMJOFTUSBJOFSQMVHHFE
t $MFBOBTOFFEFE
t)VNJEJGJFSDPWFSJOUFSMPDLTXJUDIJNQSPQFSMZ
wired
t $PSSFDUXJSJOH
t'JMMWBMWFOPUPQFO
t*G7"$JTQSFTFOUBDSPTTGJMMWBMWFDPJMSFQMBDFWBMWF
t'JMMWBMWFOPUXJSFEQSPQFSMZUPDPOUSPMCPBSE
t 7FSJGZQSPQFSGJMMWBMWFXJSJOHBUUFSNJOBM1GJMMESBJO
t5FTUPQFSBUJPOCZHPJOHUPUIF5FTUTFDUJPOVOEFSUIF%JBHOPTUJDT
menu.
t*OMFUXBUFSOFFEMFWBMWFDMPTFEPSQMVHHFE
t $IFDLJGOFFEMFWBMWFJTPQFOBOEGSFFPGTFEJNFOU
t 'JMMWBMWFXJUIJODPSSFDUPQFSBUJOHWPMUBHF
t7FSJGZWBMWFDPJMJT7"$
t1MVHHFEGJMMWBMWF
t 3FNPWFGJMMWBMWFBOEDIFDLGPSGPSFJHONBUFSJBMQMVHHJOHUIF
valve.
t 'JMMWBMWFJTJOTUBMMFECBDLXBSE
t $IFDLBSSPXEJSFDUJPOPOWBMWFPS”In” should be visible on fill
valve body.
t &YDFTTJWFXBUFSIBNNFSDBOCFOEBOFFEMF
valve and make it difficult to open
t3FQMBDFWBMWFJGOFFEFE
t*OTUBMMBXBUFSTVQQMZMJOFTIPDLBSSFTUFS
t0SJGJDFBGUFSGJMMWBMWFNBZCFQMVHHFE
t4FSWJDFWBMWFTUSBJOFSBOEPSJGJDFBTTFNCMZ
t%SBJOWBMWFMFBLJOHXBUFS
t7FSJGZESBJOJTJOUIF"VUPQPTJUJPOBOEJTDMPTFE
t .JTTJOHQSPCFSPE
t 3FQMBDFNJTTJOHQSPCFSPEJGQPTTJCMFPUIFSXJTFSFQMBDFQSPCF
rod assembly.
Tank is full.
Fill valve cycles on and off
frequently (several times per
minute)
t 1SPCFJTNBMGVODUJPOJOH
t$MFBOPSSFQMBDFQSPCF
t 8BUFSDPOEVDUJWJUZJTMPX4UBOEBSEXBUFSVOJUT
SFRVJSFXBUFSDPOEVDUJWJUZUPCF˜4DN
minimum
t"EEBEEž›UBCTPEJVNCJDBSCPOBUFJF"MLB4FMU[FS
UP
increase water conductivity. Consult DRI-STEEM for further
advice.
t/PUBOLHSPVOE
t*OTUBMMUBOLHSPVOE
t 'JMMWBMWFJTTUVDLPQFO
t $IFDLWBMWFGPSGPSFJHONBUUFS
t 'JMMWBMWFJTJOTUBMMFECBDLXBSE
t $IFDLBSSPXEJSFDUJPOPOWBMWFPS”In” should be visible on fill
valve body.
t &YDFTTJWFDPOEFOTBUFJTESBJOJOHJOUPUIFUBOL
t $POTVMU%3*45&&.UPJODSFBTFUIFBNPVOUPGXBUFSUIBUDBOCF
converted to steam before receiving a fault.
t .BMGVODUJPOJOHMFWFMDPOUSPMTZTUFN
t *GOFFEFEDMFBOQSPCFT
t $IFDLXBUFSDPOEVDUJWJUZ.JOJNVNDPOEVDUJWJUZGPSQSPQFS
PQFSBUJPOPGMFWFMDPOUSPMTZTUFNJT˜4DN
t 7FSJGZUIBUQSPCFXJSJOHJTDPSSFDU
t %SBJOWBMWFOPUGVMMZDMPTFE
t *GBOPCTUSVDUJPOEPFTOPUBMMPXESBJOWBMWFUPGVMMZDMPTFDMFBO
valve.
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the valve.
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Vapor-logic4 control board terminal P17 (drain).
t1PPSUBOLHSPVOE
t7FSJGZHPPENBDIJOFHSPVOE
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Tr o u b l e s h o o t i n g g u i d e
Filling issues
Table 78-1:
Troubleshooting guide
Issue
Possible causes
Actions
Unit does not fill with water.
t .BMGVODUJPOJOHGJMMWBMWF
t 6OQMVHQSPCFIFBE'JMMWBMWFTIPVMEPQFO*GGJMMWBMWFEPFTOPU
open, verify proper 24 VAC to fill valve. If voltage is present and
valve does not open, replace valve or valve coil.
t 7FSJGZUIBUDPJMJT7"$
t 7FSJGZUIBUWBMWFTUFNNPWFTGSFFMZ
t /PXBUFSTVQQMZUPGJMMWBMWF
t $IFDLJGXBUFSTVQQMZMJOFTUSBJOFSJTQMVHHFE
t 7FSJGZUIBUNBOVBMXBUFSMJOFTIVUPGGWBMWFJTPQFOBOEUIBU
pressure exists.
t $IFDLUIBUJOMJOFOFFEMFWBMWFJTPQFO
t 6OJUJTOPUJO"VUP.PEF
t $IBOHFNPEFUP"VUP
t 7BQPSMPHJDDPOUSPMJTJOFOEPGTFBTPOESBJO
mode
t $IFDLGPSIVNJEJGJDBUJPOEFNBOETJHOBMBUDPOUSPMCPBSE
t *OMFUXBUFSOFFEMFWBMWFJTDMPTFE
t $IFDLOFFEMFWBMWF
Fill valve does not close
t6OJUJTJOGSFF[FQSPUFDUJPOESBJOJOH
t $IBOHFNPEFUP"VUP
t'JMMWBMWFTUVDLJODMPTFEQPTJUJPO
t3FDZDMFQPXFSUPSFDZDMFGJMMWBMWFDMPTJOHBOEPQFOJOH
t .BMGVODUJPOJOHMFWFMDPOUSPMTZTUFN
t4FFCFMPX
t 0QFOESBJOWBMWF
t *GBVUPNBUJDESBJOWBMWFJTMPDLFEJOUIFNBOVBMPQFOQPTJUJPO
reset to automatic.
t 3FQMBDFWBMWFJGUIFSFJTBCSPLFOSFUVSOTQSJOHPOUIFESBJOWBMWF
t $MFBOPSSFQMBDFESBJOWBMWFJGBOPCTUSVDUJPOJOUIFWBMWFEPFT
not allow complete closure.
t $MPTFNBOVBMESBJOWBMWFJGJUJTPQFO
t *G7BQPSMPHJDTIPSUFEPVUQVUUPGJMMWBMWFDPJMSFQMBDFCPBSEPS
drain coil.
t .BMGVODUJPOJOHMFWFMDPOUSPMTZTUFN
t $IFDLUIBUQSPCFQMVHJTQMVHHFEJOGVMMZ
t *GOFFEFEDMFBOQSPCFSPET
t *GXBUFSDPOEVDUJWJUZJTMFTTUIBO˜4DNBEEž›UBCTPEJVN
bicarbonate (i.e., Alka Seltzer) to tank water. If this solves the
issue, you have low-conductivity water; consult DRI-STEEM for
further advice.
t 3FQMBDFCPBSEJG7BQPSMPHJDDPOUSPMCPBSEJTEFGFDUJWF
t 7FSJGZUIBUTZTUFNJTJOBVUPNPEF
t 7FSJGZUIBUQSPCFJTXJSFEDPSSFDUMZ
t 'JMMWBMWFJTTUVDL
t $IFDLJGGJMMWBMWFJTJOTUBMMFECBDLXBSET*GZFTSFQJQF
t *GUIFSFJTBGBVMUZJOUFSOBMTQSJOHPSEJBQISBHNJOUIFGJMMWBMWF
replace valve.
t $IFDLJGUIFSFJTBOPCTUSVDUJPOUIBUEPFTOPUBMMPXWBMWFUPTFBU
properly. Clean or replace valve as needed.
t $IFDLGPSDPOUSPMWPMUBHFBDSPTTGJMMWBMWFDPJM$IFDLXJSJOHBOE
controls.)
t *OTUBMMXBUFSJOMFUTIPDLBSSFTUPS
More on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Tr o u b l e s h o o t i n g g u i d e
Table 79-1:
Troubleshooting guide
Issue
Draining issues
Alarm:
Tank not draining
Unit does not perform
automatic drain sequence
Unit does not perform end of
season drain
Possible causes
Actions
t 5BOLESBJOPVUMFU
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t 8BUFSEFUFDUJPOQSPCFT
t $MFBOQSPCFPSSFQMBDFQSPCFSPEBTTFNCMZ
t %SBJOWBMWFXJSJOH
t $IFDLESBJOWBMWFXJSJOH
t $IFDLUPCFTVSFESBJOWBMWFJTXJSFEUP5FSNJOBM1ESBJO
PO
control board.
t 3FTFU7BQPSMPHJD
t 'JMMWBMWF
t $IFDLGPSWPMUBHFQSFTFOUBUUIFWBMWF*GQSFTFOUDMFBOPSSFQMBDF
valve.
t 3FQMBDFGJMMWBMWFJGXBUFSJTMFBLJOHUISPVHI
t 4ZTUFNQSPHSBNNFEGPSNBOVBMESBJO
t 3VOBUFTUDZDMFUPTFFJGUIFTZTUFNBDUJWBUFTESBJOPVUQVU
t %SBJOMJOFCBDLJOHVQXJUIXBUFS
t %SBJOMJOFQMVHHFE
t *OTVGGJDJFOUESBJOMJOFQJUDI
t *OTVGGJDJFOUESBJOMJOFTJ[F4FFUBOLNBOVBMGPSESBJOQJQJOHTJ[F
and pitch requirements.
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system, or automatic drain is disabled
t *OTQFDUVOJUUPWFSJGZUIBUBOBVUPNBUJDESBJOWBMWFXBTGVSOJTIFE
t (PUP4FUVQNFOVUPWFSJGZUIBUBVUPESBJOGMVTIJTFOBCMFE
t %SBJOGBVMUQMVHHFEESBJOWBMWFPSQMVHHFE
drain pipe
t $MFBOESBJOWBMWFQJQJOH
t .BMGVODUJPOJOHBVUPNBUJDESBJOTFRVFODF
t (PUP4FUVQNFOVBOEDIFDLBVUPESBJOGMVTITFUUJOHT
t /PQPXFSUPUIFBVUPNBUJDESBJOWBMWF
t $IFDLJG7"$JTQSFTFOUBUUFSNJOBMCMPDL1ESBJO
BOEBU
drain valve.
t %FGFDUJWFBVUPNBUJDESBJOWBMWF
t *GWPMUBHFJTQSFTFOUBUUIFWBMWFBOEJUTUJMMEPFTOPUPQFOSFQMBDF
valve.
t *OQVUTJHOBMBMXBZTIBTBEFNBOE
t 3FEVDFEFNBOETJHOBM
t 7BQPSMPHJD setup
t 7FSJGZJO4FUVQNFOV7BQPSMPHJDJTTFUGPSFOEPGTFBTPOESBJO
t %SBJOWBMWF
t 7BMWFOPUXJSFEPSJODPSSFDUMZXJSFEUPDPOUSPMCPBSE
t $IFDL7"$BDSPTTWBMWFDPJMEVSJOHUFTUDZDMF
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Tr o u b l e s h o o t i n g g u i d e
Table 80-1:
Troubleshooting guide
Issue
Possible causes
Actions
Alarm:
Tank temperature sensor failed
t 0QFOTIPSUFEPSJODPSSFDUXJSJOHPGTFOTPS
t $IFDLXJSJOHUFSNJOBMTGPSDPSSFDUXJSJOHBOEWPMUBHFT
1000 Ohms = 68 °F (20 °C); 1702 Ohms = 212 °F (100 °C).
t )VNJEJGJFSJOUFSMPDLTXJUDIFTBOEPSPWFS
temperature thermostat
t 7FSJGZUIBUTXJUDIPSUIFSNPTUBUJTXJSFE
t 7FSJGZJOUFSMPDLTXJUDIJTTFUDPSSFDUMZBOEIVNJEJGJFSDPWFSJTPO
t 3FTFUPWFSUFNQFSBUVSFUIFSNPTUBUJGUSJQQFE
t 6OJUIBTPWFSIFBUFEUFNQFSBUVSFJTBU'
(14 ºC) over boiling temperature
t $IFDLGPSQSPQFSXBUFSMFWFMJOUBOL
t 'BVMUZTFOTPS
t 3FQMBDFTFOTPS
Electric units:
t )FBUFSNBMGVODUJPOJOH
t 7FSJGZUIBUQSPQFSWPMUBHFJTCFJOHBQQMJFEUPIFBUFST
t 7FSJGZIFBUFSBNQFSBHFNBUDIFTXJSJOHEJBHSBN
t *GIFBUFSDPOUBDUPSJTOPUGVODUJPOJOHSFQMBDF
Electric units:
t .BMGVODUJPOJOHDPOUSPMTZTUFN
t $IFDLJGIFBUFSGVTFTBSFCMPXOBOESFQMBDFJGSFRVJSFE
t $IFDLJGBVYJMJBSZMJNJUDPOUSPMTBSFOPUBMMPXJOHTZTUFNUP
operate, e.g., duct humidistats, airflow proving switch, etc. Reset,
replace or calibrate as needed. (Airflow switch, terminal P13
(24VAC and AFsw) measures 24 VAC if open. On-off high limit,
terminals P13 (24VDC and DHL), measures 24 VDC if open.
t $IFDLJGUIFIFBUFSPWFSUFNQFSBUVSFUIFSNPTUBUIBTUSJQQFE
Reset if necessary.
GTS, STS or LTS units:
t %JSUZIFBUFYDIBOHFS
t $MFBO
GTS units:
t %JSUZCVSOFST
t -PXHBTQSFTTVSF
t $MFBOPSBEKVTUBTBQQSPQSJBUF4FFUBOLNBOVBMGPSJOTUSVDUJPOT
Heating issues
Alarm:
Tank overtemp
Reduced or no output (even
though water level is correct)
More on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Tr o u b l e s h o o t i n g g u i d e
Table 81-1:
Troubleshooting guide
Issue
Possible causes
Actions
Heater burnout
t 8BUFSMFWFMJTUPPMPX
t 3FQMBDFQSPCFT
t *NQSPQFSXJSJOH
t 7FSJGZQSPQFSWPMUBHFBQQMJFEUPIFBUFS
t 7FSJGZQSPQFSFMFDUSJDBMDPOOFDUJPOT
t .JOFSBMCVJMEVQPOIFBUFST
t 5IFIVNJEJGJFSNBZCFVOEFSTJ[FE*ODSFBTFIVNJEJGJFSDBQBDJUZPS
replace with larger humidifier. Consult DRI-STEEM.
t *OTQFDUUBOLGPSTFWFSFNJOFSBMCVJMEVQPOPSBSPVOEIFBUFS
Increase skim duration, frequency of drain cycle, and/or frequency
of cleaning. Use softened makeup water.
Heating issues
Tank does not heat up.
Humidifier tank has proper
water level and is always
warm.
t$POUBDUPSTGBJMFEUPPQFO
t3FQMBDF
t443GBJMFEDMPTFE
t3FQMBDF443DPOUSPMMFS
t )FBUFSDPSSPTJPO
t *OTQFDUIFBUFSGPSTVSGBDFDPSSPTJPOPSQJUUJOH#FGPSFSFQMBDJOH
burned-out heater verify chloride content in supply water is very
low.
t 0WFSUFNQFSBUVSFUIFSNPTUBUTXJUDIMPDBUFE
under heater wiring cover tripped
t 3FTFUUIFSNPTUBUTXJUDI
t )VNJEJGJFSDPWFSJOUFSMPDLTXJUDI7BQPSTUSFBN
models only)
t )VNJEJGJFSDPWFSOPUXJSFEBEKVTUJOUFSMPDLTXJUDI
t $PNCVTUJPOBJSTXJUDIPSQPXFSWFOUTXJUDI
(GTS only)
t $IFDLWFOUJOHTZTUFNBOEDPNCVTUJPOEBNQFST
t 7FSJGZXJSJOHBOEDPOOFDUJPOTPOTXJUDIFTBSFQSPQFSMZ
connected.
t *ODPSSFDUPSOPOFYJTUFOUDPOUSPMWPMUBHF
t $IFDLGPSQSPQFSTVQQMZWPMUBHFPOFMFDUSJDBMEJBHSBN
t 7FSJGZQSPQFSUSBOTGPSNFSWPMUBHFDIBSBDUFSJTUJDT
t 7FSJGZQSPQFSXJSJOHPGUSBOTGPSNFS
t $IFDLGPSDPOUSPMDJSDVJUWPMUBHFPOFMFDUSJDBMEJBHSBN*GWPMUBHF
is not present, troubleshoot boards and wiring system for
potential short circuit.
t *ODPSSFDUPSOPOFYJTUFOUTVQQMZWPMUBHFUPUIF
unit
t $IFDLNBJOMJOFGVTF
t $IFDLNBJOMJOFTBGFUZTXJUDI
t $IFDLIFBUFSGVTFTBOEXJSJOHEJBHSBN
t %VDU3)BCPWFIJHIMJNJUTFUQPJOU
t $IFDLGPSEVDUBJSGMPX
t 7FSJGZPQFSBUJPOPGEVDUIJHIMJNJUTXJUDIPSUSBOTNJUUFS
t /PEFNBOETJHOBM
t $IFDLTJHOBMCZPUIFST
t $IFDLGPSNJTXJSFEDPOOFDUJPO
t 7FSJGZJOUIF4FUVQNFOVUIBUIVNJEJGJFSJTDPOGJHVSFEGPSEFNBOE
signal.
t )VNJEJGJFSJTJO4UBOECZNPEF
t $IBOHFNPEFUP"VUP
t "RVBTUBU
t 5IJTJTOPSNBMUIFBRVBTUBUJTNBJOUBJOJOHBDFSUBJOUBOLXBUFS
temperature within range of 40 ºF to 180 ºF (4 ºC to 82 ºC).
t 3FBEKVTUBRVBTUBUUFNQFSBUVSFUPBMPXFSTFUQPJOU
t 443QPXFSDPOUSPMMFS
t 443DPOUSPMEFWJDFTTIPSUFEDMPTFEDIFDLSFQMBDF
t 1IBTFUPQIBTFXJSJOHDSPTTFE
t $POUBDUPS
t $POUBDUPSTIPSUFEDMPTFESFQMBDF
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Tr o u b l e s h o o t i n g g u i d e
Humidity set point issues
Table 82-1:
Troubleshooting guide
Issue
Possible causes
Actions
Humidity is below desired
level.
t 6OJUJTPQFSBUJOHCVUGBJMTUPNFFUSFRVJSFE
humidity level
t 6OJUVOEFSTJ[FESFQMBDFXJUIBMBSHFSVOJUPSBEEBEEJUJPOBM
humidifier.
t 4LJNEVSBUJPOJTUPPMPOH
t *GESBJOWBMWFEPFTOPUDMPTFGVMMZEFUFSNJOFUIFDBVTFBOEDMFBO
repair, or replace as needed.
t *GESBJOQJQFXBUFSTFBMJTBMMPXJOHTUFBNUPHPEPXOUIFESBJO
fill P-trap with water or repair as needed.
t *GUIFSFJTBOJNQSPQFSXBUFSTFBMIFJHIUJODSFBTFUPUIF
recommended height (see humidifier tank manual for water seal
height).
t *GUIFSFJTFYDFTTJWFJOUFSOBMTUFBNQSFTTVSFEFUFSNJOFUIFDBVTF
of the high pressure (e.g., high duct static pressure, undersized
orifices in dispersion tubes, water, or crushed vapor hose) and
correct as required.
t 3FQMBDFMFBLJOHHBTLFUPSWBQPSIPTF
t 3FDBMJCSBUFJGDPOUSPMTBSFPVUPGDBMJCSBUJPO
t *GGJMMWBMWFJTTUVDLPQFOSFQBJSPSSFQMBDF
t *G[POFWBMWFXJMMOPUPQFOSFQBJSPSSFQMBDF
t /PDBMMGPSIVNJEJUZGSPNIVNJEJTUBUPSGSPN
control and high limit humidity transmitters
t *OUFSDPOOFDUJOHTUFBNQJQJOHUPUIFEJTQFSTJPOBTTFNCMZJTUPP
long and/or uninsulated (do not insulate steam hose).
t -PXPSOPTJHOBMTUSFOHUIGSPNIVNJEJTUBU$IFDLGPSQSPQFS
wiring.
t $IFDLIVNJEJUZUSBOTNJUUFSTUPN"PVUQVU
t "EKVTUTFUQPJOUJG3)PSEFXQPJOUTFUQPJOUJTUPPMPX
t &YDFTTJWFPVUTJEFBJSWPMVNF
t 7FSJGZQSPQFSPQFSBUJPOPGGBOTEBNQFST7"7TZTUFNTFUD
t )FBUJOHFMFNFOUTOPUPQFSBUJOH
t 7FSJGZUIBUIVNJEJTUBUJTDBMMJOHGPSIVNJEJUZ
t $IFDLGPSDPOUSPMWPMUBHFJGMJNJUDPOUSPMTBJSGMPXQSPWJOHTXJUDI
zone valves, etc.) are not allowing unit to operate.
t $IFDLGVTFTBOESFQMBDFJGUIFZBSFCMPXO
t $IFDLJGUIFIFBUFSPWFSUFNQFSBUVSFIBTCFFOUSJQQFE3FTFUJG
necessary.
t )VNJEJUZDPOUSPMJOQVUUZQFOPUUIFTBNFBT
Vapor-logic4 software
t $IFDL7BQPSMPHJD control board connections P11 and P13.
Consult DRI-STEEM.
t7BQPSMPHJD not in Auto mode
t$IBOHFNPEFUP"VUP
More on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Tr o u b l e s h o o t i n g g u i d e
Humidity set point issues
Table 83-1:
Troubleshooting guide
Issue
Possible causes
Actions
Humidity above set point.
t )JHIFOUFSJOHSFMBUJWFIVNJEJUZ
t %FIVNJEJGZ
Hunting (humidity swings
above and below desired set
point)
t 6OJUPWFSTJ[FE
t $POTVMU%3*45&&.
t 3FEVDFEBJSGMPX
t $IFDLGBOTEBNQFST7"7TZTUFNTFUD
t *NQSPQFSMZMPDBUFEIVNJEJTUBUPSIVNJEJUZ
transmitters
t 3FMPDBUFVTJOHHVJEFMJOFTJO"QQFOEJYTFDUJPOPGUIJTNBOVBM
t .BMGVODUJPOJOHDPOUSPMT
t $IFDLGPSJODPSSFDUTVQQMZWPMUBHF
t $IFDLGPSJODPSSFDUDPOUSPMTJHOBM
t $IFDLGPSJNQSPQFSXJSJOHIPPLVQ
t *GIVNJEJUZDPOUSPMMFSPSUSBOTNJUUFSBSFPVUPGDBMJCSBUJPOPS
malfunctioning, repair or recalibrate.
t $IFDLJG443DPOUBDUPSTIPSUFE3FQBJSPSSFQMBDFBTOFFEFE
t $POUBDUPS443JTTUVDLDMPTFE
t 3FNPWFQPXFSGSPNIVNJEJGJFSJNNFEJBUFMZ$POUBDU%3*45&&.
t .BMGVODUJPOJOHDPOUSPMTZTUFN
t *GUIFSFJTBGBVMUZPSJOBDDVSBUFIVNJEJUZDPOUSPMMFSPSUSBOTNJUUFS
repair or replace.
t $IFDLGPSQSPQFS7BQPSMPHJD control settings: RH set point, high
limit set point, cycle rate, PID tuning, etc.
t 3FMPDBUFQPPSMZMPDBUFEDPOUSPMDPNQPOFOUT4FFIVNJEJUZDPOUSPM
placement information in Appendix B recommendations.
t 0O443VOJUT$POUSPMXJSFBOEQPXFSXJSFTNVTUCFQIZTJDBMMZ
separated from each other. If they are not, an induced control
voltage can occur, causing erratic operation.
t 7FSJGZUIBULFZQBEEJTQMBZNPEVMBSDBCMFJTJTPMBUFEGSPNQPXFS
wiring.
t "JSWPMVNFWBSJFTSBQJEMZ
t 4UBCJMJ[F
t "JSUFNQFSBUVSFJTWBSZJOHSBQJEMZ
t 4UBCJMJ[FUPœ'œ$
t1SPQPSUJPOBMCBOEJTUPPTNBMMBOEPSJOUFHSBM
gain (Ki) is too large
t *G3)TXJOHTPVUTJEF1*%CBOEJODSFBTF1*%CBOEVTJOHUIF4FUVQ
menu.
t %FDSFBTFJOUFHSBMHBJO,J
VTJOHUIF4FU6QNFOV
t 0OPGGDPOUSPMJTOPUBEFRVBUF
t *GDPOUSPMMJOHUIFIVNJEJGJFSXJUIBOPOPGGTJHOBMDPOTJEFS
changing to controlling with a modulating signal.
More on the next page >
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
Tr o u b l e s h o o t i n g g u i d e
Gas-to-steam (GTS) humidifier issues
Table 84-1:
Troubleshooting guide
Issue
Possible causes
Actions
Alarm: Blocked flue
t #MPDLFEGMVFTFOTPSJTPQFO
t $IFDLWFOUJOHTZTUFNGPSPCTUSVDUJPOT
t $IFDLBJSMJOFUPGMVFTXJUDIGPSPCTUSVDUJPOT
t 8JOEZDPOEJUJPOTDBVTFEPXOESBGUTJOWFOUJOHTZTUFN*OTUBMMB
high wind vent cap or isolate as recommended by local codes.
Alarm:(BTWBMWF<OVNCFS>
fault
t 'BJMFEJHOJUJPONPEVMF
t .JTXJSFEHBTWBMWF
t $IFDLJHOJUJPONPEVMF3FQMBDFJGOFDFTTBSZ
t $IFDLHBTWBMWFXJSJOH
Alarm:#VSOFS<OVNCFS>GBVMU
t /PHBTTVQQMZUPVOJU
t 7FSJGZUIBUHBTTFSWJDFWBMWFJTPOBOESFDFJWJOHNJOJNVN
pressure to manifold per rating plate.
t (BTWBMWFJTPGGPSUIFSFJTOPQPXFSUPUIFWBMWF
t $IFDLGPS7"$GSPNUIFJHOJUJPONPEVMFUPUIFHBTWBMWF
t $IFDLUIBUHBTWBMWFQMVHJTTFBUFEQSPQFSMZ
t #SPLFOJHOJUPS
t 7FSJGZUIBUJHOJUPSHMPXT3FQMBDFJGOFDFTTBSZ
t (BTWBMWFPVUMFUQSFTTVSFJTUPPMPX
t 7FSJGZPVUMFUQSFTTVSFJTTFUQFSSBUJOHQMBUF
t #MPXFSJOMFUJTEJSUZPSPCTUSVDUFE
t $MFBOJOMFUBOEDIFDLGPSPCTUSVDUJPOT
t 'MBNFTFOTPSOPUTFOTJOHGMBNF
t $IFDLGMBNFTFOTPSXJSJOH
t $IFDLQPMBSJUZBUJODPNJOHQPXFS4XJUDIJGOFDFTTBSZ
t 4USBZGJCFSGSPNCVSOFSUPVDIJOHGMBNFTFOTPS6TFBTDSFXESJWFS
to gently push down fibers near flame sensor.
t 'MBNFTFOTPSJTDSBDLFE3FQMBDF
t 1PMBSJUZSFWFSTFEBUQPXFSCMPDL
t $IFDLQPMBSJUZ
t *HOJUJPOTFRVFODFFOHBHFEXJUIPVUQPXFSUP
gas valve
t 7FSJGZJHOJUJPOTFRVFODF
t 3FQMBDFJHOJUJPONPEVMF
t (BTWBMWFJHOJUFTFOTJOHFMFDUSPEFJTPVUPG
sequence
t 7FSJGZXJSFDPOOFDUJPOTUPUIFTFDPNQPOFOUT
Alarm:
#MPXFS<OVNCFS>GBVMU
t 5IFCMPXFSJTJODPSSFDUMZXJSFEPSUIFCMPXFS
failed to meet demand speed
t $IFDLGPSQSPQFSCMPXFSXJSJOH
t 3FQMBDFCMPXFS
Alarm:
No power vent airflow
t 5IFQPXFSWFOUFSBJSGMPXTXJUDIJTPQFO
t $IFDLGPSQSPQFSQPXFSWFOUXJSJOH
t 3FQBJSPSSFQMBDFQPXFSWFOUFS
Alarm:
No combustion airflow
t 5IFDPNCVTUJPOBJSEBNQFSJTPQFO
t $IFDLGPSQSPQFSDPNCVTUJPOBJSEBNQFSXJSJOH
t 3FQBJSPSSFQMBDFEBNQFSNPUPS
Alarm:
*HOJUJPONPEVMF<OVNCFS>GBVMU
More on the next page >
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Operation
Replacement parts
Table 85-1:
Vapor-logic4 replacement parts
Description
Quantity
Part number
Main board
1
408495-001
Keypad/display (includes printed circuit board, LCD display screen, membrane switch, front and back of plastic cover)
1
408495-010
27" (686 mm)
408490-014
60" (1524 mm)
408490-009
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
BACnet MSTP
1
191515
Keypad/display communication cable (contact DRI-STEEM for lengths other than 27" (686 mm) and 60" (1524 mm)
Figure 85-1:
Vapor-logic4 replacement parts
Main board
Keypad display
Molex connector plug (4-position shown)
LonTalk card
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF Operation
1BHF t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Appendix
Appendix:
Control input signals
DRI-STEEM offers three control options for all its humidification
systems controlled by Vapor-logic4: On-off control, demand signal
control, and transmitter control.
On-off control
On-off control—the simplest control scheme—does exactly what its
name implies: the output device turns fully on, then fully off.
The humidistat that controls the humidifier has a differential
between the on and off switch points. 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 where there are multiple contactor outputs, such as
an electric element humidifier, contactors for each heat stage are
pulled in one at a time with a one-second delay between them. In
applications with a variable output stage, such as a GTS humidifier,
the outputs are ramped up until they reach 100%.
Modulating demand signal control
With modulating demand signal control, a modulating humidistat
or a building automation system sends a signal to the Vapor-logic4
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 DRI-STEEM producing this
signal, the humidity set point is set at the humidistat. The keypad/
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.
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF "
Appendix
Appendix:
Control input signals
Calculation of transmitter % RH
% RH =
(mA reading) – 4
0.16
Example:
12 mA – 4
0.16
= 50% RH
Transmitter control
With transmitter control, the Vapor-logic4 board receives a signal
that corresponds to the actual humidity level measured in the space
being controlled. (With a transmitter provided by DRI-STEEM,
the signal is 4 to 20 mA, which corresponds to 0 to 100% RH). The
Vapor-logic4 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. For more information about the
PID control loop, see Page 47.
1BHF " t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Appendix
Appendix:
Sensor placement
Recommended sensor locations
Other factors that affect humidity
control
Sensor or transmitter location has a significant impact on
humidifier performance. In most cases, we recommend that you 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.
Unsatisfactory humidity control may involve
more than the controller’s capability to
control the system. Other factors that play
an important role in overall system control
are:
t 4J[FPGUIFIVNJEJGJDBUJPOTZTUFNSFMBUJWF
to load
t 0WFSBMMTZTUFNEZOBNJDTBTTPDJBUFEXJUI
moisture migration time lags
t "DDVSBDZPGIVNJEJTUBUTBOEIVNJEJUZ
transmitters and their location
t %SZCVMCUFNQFSBUVSFBDDVSBDZJOTQBDFPS
duct
t 7FMPDJUJFTBOEBJSGMPXQBUUFSOTJOEVDUT
and space environments
t &MFDUSJDBMOPJTFPSJOUFSGFSFODF
Recommended sensor locations (see figure below):
A Ideal—ensures the best uniform mix of dry and moist air with
stable temperature control.
B Acceptable—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,
but if extended time lag exists between moisture generation and
sensing, make sure control contractor extends 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.
( Best location for duct high limit humidistat or humidity sensor.
Figure A-3-1:
Recommended sensor location
8' to 12'
(2.4 m to 3.7 m)
min.
Outside air
Damper control
Relief air
Return air
C
Air handling
unit
High limit humidistat or high limit
transmitter (set at 90% RH maximum) for
VAV applications
Airflow switch (sail type) or
differential pressure switch
recommended for VAV applications)
G
Vapor absorption has taken place
Window
Point of vapor absorption
D
E
F
Humidifier dispersion assembly
Turning vanes
A
B
F
DC-1084
E
Doorway
Window
F
Temperature compensation option: Place a temperature
compensation sensor on the lower corner of the inside surface of
double-pane window glass on north or northeast facing window
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF "
Appendix
Appendix:
GTS model-specific
default setup values
Table A-4-1:
GTS model-specific default setup values
Water usage before auto drain/flush
GTS
model
Water
type
EOS
drain
enabled?
Drain valve
type*
Tube dispersion systems
Drain
duration
Flush
duration
Skim
duration
EOS
drain
duration
Water usage
before service
Area-type dispersion systems
lbs
kg
lbs
kg
Minutes
Minutes
Seconds
Minutes
lbs
kg
Potable
:FT
Electric motorized
25,000
11,300
25,000
11,300
40
1
25
75
75,000
34,000
Softened
:FT
Electric motorized
75,000
34,000
25,000
11,300
40
1
25
75
75,000
34,000
No
Ball
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
150,000
68,000
:FT
Electric damper
N/A
N/A
N/A
N/A
N/A
N/A
N/A
30
150,000
68,000
Potable
:FT
Electric motorized
25,000
11,300
25,000
11,300
40
1
25
75
150,000
68,000
Softened
:FT
Electric motorized
150,000
68,000
25,000
11,300
40
1
25
75
150,000
68,000
GTS-100
DI/RO
GTS-200
No
Ball
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
300,000
136,100
:FT
Electric damper
N/A
N/A
N/A
N/A
N/A
N/A
N/A
30
300,000
136,100
Potable
:FT
Electric motorized
30,000
13,600
30,000
13,600
45
1
30
90
225,000
102,000
Softened
:FT
Electric motorized
225,000
102,000
30,000
13,600
45
1
30
90
225,000
102,000
No
Ball
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
450,000
204,100
:FT
Electric damper
N/A
N/A
N/A
N/A
N/A
N/A
N/A
35
450,000
204,100
Potable
:FT
Electric motorized
30,000
13,600
30,000
13,600
45
1
30
90
300,000
136,100
Softened
:FT
Electric motorized
300,000
136,100
30,000
13,600
45
1
30
90
300,000
136,100
No
Ball
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
600,000
272,200
:FT
Electric damper
N/A
N/A
N/A
N/A
N/A
N/A
N/A
35
600,000
272,200
Potable
:FT
Electric motorized
45,000
20,400
45,000
20,400
65
2
45
130
375,000
170,100
Softened
:FT
Electric motorized
375,000
170,100
45,000
20,400
65
2
45
130
375,000
170,100
No
Ball
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
750,000
340,200
:FT
Electric damper
N/A
N/A
N/A
N/A
N/A
N/A
N/A
50
750,000
340,200
Potable
:FT
Electric motorized
45,000
20,400
45,000
20,400
65
2
45
130
450,000
204,100
Softened
:FT
Electric motorized
450,000
204,100
45,000
20,400
65
2
45
130
450,000
204,100
No
Ball
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
900,000
408,200
:FT
Electric damper
N/A
N/A
N/A
N/A
N/A
N/A
N/A
50
900,000
408,200
Potable
:FT
Electric motorized
50,000
22,700
50,000
22,700
80
2
55
160
525,000
238,100
Softened
:FT
Electric motorized
525,000
238,100
50,000
22,700
80
2
55
160
525,000
238,100
No
Ball
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
1,050,000
476,300
:FT
Electric damper
N/A
N/A
N/A
N/A
N/A
N/A
N/A
60
1,050,000
476,300
Potable
:FT
Electric motorized
50,000
22,700
50,000
22,700
80
2
55
160
600,000
272,200
Softened
:FT
Electric motorized
600,000
272,200
50,000
22,700
80
2
55
160
600,000
272,200
No
Ball
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
1,200,000
544,300
:FT
Electric damper
N/A
N/A
N/A
N/A
N/A
N/A
N/A
60
1,200,000
544,300
DI/RO
GTS-300
DI/RO
GTS-400
DI/RO
GTS-500
DI/RO
GTS-600
DI/RO
GTS-700
DI/RO
GTS-800
DI/RO
Notes:
* GTS units in an outdoor enclosure always have an electric damper drain valve. All GTS drain valves are normally closed except for GTS units in an outdoor enclosure, which have normally open drain valves.
EOS = End-of-season
1BHF " t %3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
Notes:
%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF "
Expect quality from the industry leader
Two-year Limited Warranty
For over 40 years, DRI-STEEM has been
leading the industry with creative and
reliable humidification solutions. Our focus
on quality is evident in the construction
of the Vapor-logic4, which has a Two-year
Limited Warranty.
DRI-STEEM Corporation (“DRI-STEEM”) 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 twenty-seven (27) months from the date
DRI-STEEM ships such product, whichever date is the earlier.
For more information
www.dristeem.com
sales@dristeem.com
Technical support
800-328-4447
For the most current product information,
visit our Web site: www.dristeem.com
DRI-STEEM Corporation
An ISO 9001:2000 certified corporation
U.S. Headquarters:
14949 Technology Drive
Eden Prairie, MN 55344
800-328-4447
952-949-2415
952-229-3200 (fax)
European office:
Marc Briers
Grote Hellekensstraat 54 b
B-3520 Zonhoven
Belgium
+3211823595 (voice)
+3211817948 (fax)
E-mail: marc.briers@dristeem.com
Continuous product improvement is a
policy of DRI-STEEM Corporation; therefore,
product features and specifications are
TVCKFDUUPDIBOHFXJUIPVUOPUJDF
DRI-STEEM, GTS, and Vapor-logic are
registered trademarks of DRI-STEEM
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.
If any DRI-STEEM product is found to be defective in material or workmanship
during the applicable warranty period, DRI-STEEM’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 DRI-STEEM’s
election. DRI-STEEM shall not be liable for any costs or expenses, whether direct
or indirect, associated with the installation, removal or reinstallation of any
defective product. The Limited Warranty does not include cylinder replacement
for electrode steam humidifiers.
DRI-STEEM’s Limited Warranty shall not be effective or actionable unless
there is compliance with all installation and operating instructions furnished
by DRI-STEEM, or if the products have been modified or altered without the
written consent of DRI-STEEM, or if such products have been subject to accident,
misuse, mishandling, tampering, negligence or improper maintenance. Any
warranty claim must be submitted to DRI-STEEM in writing within the stated
warranty period. Defective parts may be required to be returned to DRI-STEEM.
DRI-STEEM’s Limited Warranty is made in lieu of, and DRI-STEEM 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.
DRI-STEEM 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 DRI-STEEM has notice of
the possibility of such damages.
By purchasing DRI-STEEM’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 DRI-STEEM 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.
Any extension of the Limited Warranty under this program must be in writing,
signed by DRI-STEEM, and paid for in full by the purchaser.
© 2009 DRI-STEEM Corporation
Software Version 1.1.0
Form No. VL4-IOM-0309
Part "
No. 890000-713
Rev 7BQPSMPHJD
B
1BHF
t %3*45&&.
*OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM
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Printed on 30%
recycled paper
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