56
VAPOR-LOGIC
®
VERSION 6 INSTALLATION AND OPERATION MANUAL
Options and features
TEMPERATURE COMPENSATION CONTROL OPTION
When selected as an option, DriSteem provides a temperature compensation
transmitter. The temperature compensation transmitter continually monitors
interior window glass temperature and transmits this temperature to
Vapor-logic.
Vapor-logic assumes a 70 °F (21 °C) room temperature and uses the glass
temperature and the RH in the space being controlled to calculate the dew
point (°F or °C) for the space.
If the window temperature falls below the dew point, Vapor-logic automatically
decreases the RH set point so moisture does not form on windows. The Home
screen displays the modified RH set point, and an alert of "Temp Comp On"
appears in the Alert Log of the touchscreen and a message appears on the
Web interface, denoting that temperature compensation has taken control of
the RH set point. When the interior window glass temperature rises above the
dew point, Vapor-logic restores system control to the normal RH set point for
the space, and the “Temp comp on” message and alerts automatically clears.
The temperature compensation control option is available only when the
system is equipped with an RH transmitter. It is not available when a remote
humidistat, dew point transmitter, or building automation system is used to
control the humidifier.
The transmitter provided with Vapor-logic is calibrated for –20 °F to 160 °F
(–29 °C to 71 °C) with output from 4 to 20 mA. For example, a temperature
reading of 70 °F (21 °C) should produce a measurement of 12 mA. You can
calibrate the sensor by adjusting the offset in the auxiliary temp sensor section
of the Status menu of the touchscreen or Diagnostics menu of the Web interface
menu.
AUXILIARY TEMPERATURE SENSOR OPTION
When selected as an option, DriSteem provides a temperature sensor for
monitoring temperature in a duct or space. Temperature from this sensor can
be viewed from the Status menu (“Aux temperature”).
TANK PREHEAT FEATURE
The tank preheat feature heats the water in the tank to near boiling to allow a
rapid response to a demand signal. If the tank is cold when a small demand
signal is present, the Vapor-logic controller overrides the demand signal and
heats until the tank temperature increases to the boiling point. At this point,
control is returned to the original demand signal.
Preheating allows the system to respond quickly to small demand requests.
When preheating, the word “Heating” appears on the Home screen.
OPERATION
To Next Page
Loading...
