20
VAPOR-LOGIC
®
3
control
VAPOR-LOGIC
3
is the standard controller for the
HUMIDI-TECH. For more information regarding the
operation of the VAPOR-LOGIC
3
microprocessor,
see the VAPOR-LOGIC
3
Installation, Operation and
Maintenance Manual.
Control system start-up/checkout
1.
Confirm that proper grounding and an approved
earth ground are provided.
2.
Confirm that the control signal connected to the
VAPOR-LOGIC
®
3
system is compatible with the
VAPOR-LOGIC
3
program. Identify the
VAPOR-LOGIC
3
program code on the wiring
diagram. Refer to the VAPOR-LOGIC
3
manual
to decipher the code using the nomenclature
description.
3.
Confirm all wiring is correct per wiring diagram.
4.
Confirm J17, J18 and J19 shunt connectors on
VAPOR-LOGIC
3
board are in their correct
position per wiring diagram. See the
VAPOR-LOGIC
3
manual for the physical
locations.
5.
Confirm that the keypad is mounted on the
HUMIDI-TECH with modular cable routed away
from high voltage circuits and connected to the
J2 female connector on the control board.
6.
Turn on water supply. Confirm drain valve is
closed.
HUMIDI-TECH
®
START-UP AND OPERATION
7.
Turn on power. The keypad will display the
introduction of VAPOR-LOGIC
3
and will then
enter AUTO mode.
8.
The system will initiate filling of the tank with
water. The keypad will display "Filling" as part of
the idle screen information.
9.
Airflow switch input must be closed.
10. High limit humidistat input must be closed or
variable air volume (VAV) control system high
limit transmitter must be connected.
11. Sufficient water in the tank, airflow switch
closed, high limit humidistat closed, and a call
for humidity will activate the heat output.
If the tank does not contain water and the
heat output is activated by the
VAPOR-LOGIC
3
control system, a serious
failure will result. Immediately remove power
from the system and verify that all wiring has
been completed per the wiring instructions
in the manual and the unit wiring diagram.
12. During normal operation, the keypad will display
humidifier operating status. See the
VAPOR-LOGIC
3
manual for descriptions to
change any of the operating parameters.
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11/19/2009 9:51:09 AM
