Installation guide

7
VAPOR-LOGIC
®
2
KEY PAD / DIGITAL DISPLAY OPERATION
UP ARROW
The UP ARROW key is used, in the AUTOMATIC mode,
to transfer one of the automatic scrolling items on the
lower line to the upper line for constant monitoring. The
item selected will be updated every few seconds and will
remain isolated on the upper line while the other functions
will continue scrolling on the lower line. Items that can be
selected for constant monitoring are: Actual RH, Actual
High Limit RH, Glass Temperature, Time until Recom-
mended Service, Time until Automatic Drain and Flush
Sequence, and Time until End of Season Drain.
If the system is in the DRAIN mode, pressing the UP
ARROW key will open the drain valve.
If the system is in the TEST mode, pressing the UP
ARROW key will start the test, or continue the test if it
was halted.
DOWN ARROW
The DOWN ARROW key is used, in the AUTOMATIC
mode, to sequence through the auto scrolling items of the
lower line. (To see the list of auto scrolling parameters,
turn to page 11.)
If the system is in the DRAIN mode, pressing the DOWN
ARROW key will close the drain valve.
If the system is in the TEST mode, pressing the DOWN
ARROW key will halt the test, or if already halted, will
cancel the test.
OPERATING MODES
There are four operating modes: AUTO, STANDBY,
DRAIN, and TEST. These different modes allow you to
monitor and control the various operations of
VAPOR-LOGIC
2
. The digital displays vary considerably
from mode to mode. The tables on pages 10-13 will give
you all of the possible displays, as well as their descrip-
tions, so you are able to understand what
VAPOR-LOGIC
2
communicates through the digital
display.
AUTO MODE
The AUTO mode allows for the normal operation of
the humidifier. AUTO mode is the default mode of
VAPOR-LOGIC
2
if power is interrupted.
In AUTO mode the upper line contains the review param-
eter you have selected and the lower line contains the
auto scrolling parameters. (Remember: the UP ARROW
key can be used to move through the possible review
parameters on the upper line, while the DOWN ARROW
key can be used to scroll through the parameters listed
on the lower line.)
STANDBY MODE
When in STANDBY mode, the control outputs are turned
off. Inputs continue to be monitored, and all programming
functions are available. However, no outputs are affected,
and the water level in the evaporating chamber is not
maintained. The drain timers and service timers do not
accumulate time.
DRAIN MODE
Similar to the STANDBY mode, the inputs are monitored
but no outputs are affected while the system is in DRAIN
mode. Programming functions are not accessible while in
the DRAIN mode. The DRAIN mode de-energizes the
heat source. While in the DRAIN mode, the drain valve
can be opened or closed with the UP and DOWN keys.
In DRAIN mode, the upper display will read “DRAIN
MODE” while the lower display reads either “DRAIN OFF”
or “DRAIN ON.”
TEST MODE
The TEST mode can turn on the control outputs one at a
time to verify that each is performing correctly. All other
functions are blocked. The TEST mode begins with a
flashing “TEST MODE” message for five seconds. After
this delay, the outputs are cycled individually. The heat
demand, the drain valve, and the fill valve are tested.
In TEST mode, the upper display will read “TEST MODE”
while the lower display indicates the status of the test, or
the output function being tested. For example, the lower
line display could read: “FILL ON.”
INITIALIZATION
When power is first applied to VAPOR-LOGIC
2
, a short
self-diagnostic test sequence is performed. During this
test, the microprocessor and the non-volatile EEPROM
memory are verified to be functioning properly. If a
fault is detected, the fault message is displayed and
humidifier operation stops. If no fault is detected,
VAPOR-LOGIC
2
begins normal operation in the AUTO
mode.
Accessing and Setting Main Menu Parameters
In either AUTO or STANDBY Mode, press the “SET” key
to enter the Main Menu. (Note: The Access Code has
been factory set to “00,” and will not appear unless you
have reset the Access Code. You may set the Access
Code as you would any other parameter in the Main
Menu.)