11. START -UP& OPERATING SEQUENCE
Once the Steam Humidifier has been installed and the water, drain, humidistat and blower interlock connections completed, the humidifier may be started.
A. Disconnect the water line. Turn on the water supply and flush the line into a bucket. Reconnect the water line.
B. Set the humidistat to a setting higher than the room RH level.
C. Plug the S2000 Humidifier line cord into a 120 VAC, 20 amp source. (240VAC,15amp for S2020).
D. The Green "POWER" LED should blink rapidly and the drain valve will open momentarily upon initial start up. The "FILL" LED will illuminate and water should begin to fill the Water Pan. The Power LED will now blink slowly.
E. When the water has reached the probe level the "FILL" lamp and fill valve will be turned off, and the "HEATER" LED and heater element will be turned on. The “POWER” LED will blink slow and steady.
F. Once the water reaches 170 deg. F. the "BLOWER" LED will illuminate and the system blower should start up.
G. If the above steps have been successfully completed, the humidifier is operating properly.
12.SERVICE “LED” INDICATORS
A.POWER: In normal standby mode, when the humidistat is not calling for humidity and the power cord is plugged in, the "POWER" LED should be blinking slowly. If the green "POWER" LED is not flashing when there is power to the unit, the CPU and/or circuit board may have failed.
B.FILL: When the humidistat closes, on a call for humidity, the "FILL" LED is illuminated, the Solenoid Valve is open and the water reservoir is filling.
C.HEATER: When the water reaches it's proper level the valve closes, the "FILL" LED goes out, the "HEATER" LED is illuminated, and the Heater begins to heat the water.
NOTE: If the humidifier is unplugged while in steaming operation and then plugged back in, A rapid flashing of the “POWER” LED will occur and all other functions will stop! The unit wants to perform a water probe test, but cannot perform this test until the water cools down. Simply wait until the unit cools down and it will resume normal operations. To accelerate a cool down, simply turn the HVAC system fan on via the thermostat.
D. BLOWER: When the water in the reservoir reaches approximately 170 deg. F. the "BLOWER" LED will be illuminated and the interlock wiring should turn the system blower on. Depending upon the water and ambient temperatures, it may take anywhere from four to twelve minutes for the water to heat to 170 deg. F. If the humidistat remains closed the "HEATER" and "BLOWER" LED's will both be illuminated at the same time and the "POWER" LED will be blinking slowly.
E. The "FILL" LED will illuminate and the water reservoir will refill at irregular intervals, depending on the boil off rate. The "HEATER" LED should remain illuminated unless the humidistat opens or the humidifier enters a drain cycle or failure mode.
F. DRAIN: This LED will be illuminated when the microprocessor cycles the humidifier into a Maintenance Mode. After a fan forced cool down period, the water is allowed to drain at 140 degrees F. The drain valve will then close and the fill valve will open to refill the reservoir and resume normal operation. This mode will last about one hour and the microprocessor will automatically restart the unit afterwards, if there is a call for humidity. This drain cycle will occur once every 8-12hours, to reduce the mineral concentration in the tank and let the heater cool- down. That will shed most deposits that have built up on the heater. NOTE: The "POWER" LED will blink rapidly during Maintenance mode.
NOTE: A unique feature of the “S” series humidifiers is called “Fill on Request”. The unit will not refill with water after a maintenance cycle, unless there is a demand for humidity from the humidistat. This ensures that the unit will not sit idle with standing water, which can stagnate over time.
G. FAILURE LED'S: When service is required, these LED's will illuminate. If the humidifier enters a failure mode, it must be manually reset by disconnecting the power and then reconnecting it. If the “Air” failure LED occurs, simply turn the Humidistat off or down then back up again to reset.
WATER: This will occur when the reservoir is not filling up with water, not filling fast enough or the microprocessor cannot recognize that the water is touching the probe. Reverse Osmosis water or purified (distilled/deionized) water sources should be avoided, unless the final feed water measures at least 25 ppm conductivity.
HEATER: This will occur if the humidifier is not boiling off water during the "HEATER" cycle. Water in the reservoir is not reaching 170 deg. F. temperature, or the unit has not detected a request for water in a 50 minute steaming time period. Both red LED’s will illuminate in this condition.
AIR: This will occur if the humidifier detects a loss of air flow for more than 4 minutes. A field supplied air proving device must be installed, wired and tested.
THERMISTOR: This will occur if a short or open is detected in the temperature probe.
