Installation guide

DRI-STEEM Vapor-logic 3 *OTUBMMBUJPOBOE0QFSBUJPO.BOVBMt1BHF
Fault messages
Tank level fault (previous name: Fill Time Fault)
The Vapor-logic
3 controller keeps track of how much water
converts to steam. If this total amount exceeds a preset limit
without energizing the fill valve, the controller assumes a low water
condition is present. This shuts down the humidifier and logs a tank
level fault. The humidifier will not resume operation until you clear
this fault. Each time the fill valve energizes, the total is reset to zero.
Except on systems equipped with end-of-season draining capability,
the controller cannot keep track of water usage on a DI/RO
humidifier because the fill valve is not an electric solenoid type; a
mechanical fill valve maintains the proper water level. This fill valve
operates independently of the Vapor-logic
3 controller. Therefore, on
a DI/RO system, Vapor-logic
3 cannot keep track of the amount of
water converted to steam between fill cycles.
Over-temperature fault (previous name: Thermal Trip Flt)
The Vapor-logic
3 controller constantly monitors the tank
temperature. If the temperature rises above the over-temperature set
point (235 °F [113 °C]), the humidifier shuts down and a thermal
trip fault is logged on the Alarms screen. The humidifier will not
resume operation until you clear this fault.
Sensor faults
The following is a list of sensor faults that can occur. The text in
parentheses is the text that actually appears in the alarm log. Please
note that this is a complete list of faults. Your system may not have
all of these options.
t )VNJEJUZUSBOTNJUUFSGBVMU3)5SBOT'BVMU
The humidity sensor is incorrectly wired or defective.
t Dew point transmitter fault (DP Trans Fault)
The dew point sensor is incorrectly wired or defective.
t VAV humidity transmitter fault (VAV Trans Flt)
The duct humidity sensor is incorrectly wired or defective.
t 5FNQFSBUVSFDPNQFOTBUJPOUSBOTNJUUFSGBVMU (Temp Trans Flt)
The temperature compensation sensor is incorrectly wired or
defective.
Water level control faults
Below is a list of water level control faults that can occur. The text in
parentheses is the text that appears in the alarm log.
t Fill fault (Fill Fault)
The fill valve has been energized for more than 40 minutes
without the water reaching the top probe.
t %SBJOGBVMU(Drain Fault)
The drain valve has been energized for more than 20 minutes
without the water falling off the bottom probe.
VL3_IOM.pdf 65 11/19/2009 9:11:15 AM