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Powered Flow Humidifier

If you once installed a bypass humidifier, you won’t have any  troubles with installation of the powered one, because these processes are very similar. The main distinction is  the fact the bypass unit requires a supply duct to be installed for flowing of the air through the device. A powered unit has its own small fan to deliver humidified air into the airflow of air handler.

Such model is very popular. Most companies, which produce humidifiers, have their own model of the powered flow-through device. There is a minimal difference between manufacturers.

Process Of Installation

  • 12You should  choose the best mounting place on the air handler or furnace supply plenum. You have to measure twice to be confident  that the installation area is easy to reach and serviceable. You must place the device at least 3″ above top edge of furnace. If there is an air conditioning evaporator coil in the furnace, you have to be confident  that the place of the location of humidifier is completely above the location of the coil.
  • You should place the tape and the template to the plenum in the desired mounting area. You have to mark the hole to be cut in the plenum.
  • The opening should be cut. You should be careful not to enlarge the opening.
  • The front cover of the new unit should be removed. You should attach the frame to the plenum with sheet metal screws through provided mounting holes. The sides may have clips which are the reason of locking of sides to the plenum.
  • The humidifier pad assembly should be reinstalled. The water supply tubing should be reinstalled too.
  • The cover of the humidifier should be reinstalled.
  • You should wire up the transformer high voltage side (normal is the level of 110volt wiring).
  • You should mount the duct-humidistat above or before the unit, so it senses the true humidity of the air from the conditioned area.
  • You have to wire up the low voltage wiring or control wiring. One leg of the low voltage wiring goes strictly to the solenoid valve. The other leg goes through a proving switch (pressure switch, current sensing relay, or sail switch), then through the humidistat, then to the solenoid valve.

22Most powered units have an integral transformer of 24 V, which removes the need of providing a field supplied source of power of 24 V. You should read the instructions of the manufacturer. Some devices or air handlers have humidifier taps, which remove the need for a field-supplied proving switch. If the primary heating source of your house differs from the forced air or your thermostat has capabilities of humidity control, there will be a need of wiring variations.

  • The drain tubing should be placed to a floor drain or other functioning place for drain (drain must have downward slope to the house place of drain).
  • The 1/4″ water line has to be hooked up. Most devices are equipped with a self-piercing saddle-valve which should be attached around a copper water line. As the valve is tightened in, the water line is filled with water and supply is alive to the equipment.

You should read the recommendations carefully. Most powered units accept cold or hot water, hard or softened water.

Steps Of Reinstallation Of The Water Panel / Service Works

1. Firstly you should turn down the device. The power should be turned off. You should remove cover and set aside.
2. The top of panel should rotate towards you. You have to lift it up and out.
3. The water distribution tray should be removed. You should have the ability to leave the line of water connected.
4. The media should be removed from frame (you should slide it up and out).
5. Hard water debris and deposits should be cleaned out.
6. The drain tube should be inspected for flow and free of obstruction.
7. Then you should slide new media into the frame. The water distribution tray should be reinstalled. Disassemble is a opposite for the reassembly.
8. At the end you should inspect the done work.

Time, When The Heating Season Ends:

Your humidifier should be cleaned. You have to shut off water, then turn off power to the device, and turn off the humidistat.

Time, When The Winter Season Begins:

You have to come back to original start up steps. You should replace the water pad (this procedure should be done every 1-3 months, depending upon the quality of your water). Then you should turn power back on, set the unit to desired level, and cycle the device to verify process. You should inspect for water leaks, and verify that the drain hose is not plugged.

Time Of Holidays:

You should shut off the water supply and power to the device until you have come back from your vacation.