SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
21
Initial Verification & Start-up
Initial verification and start-up
– commissioning – must be carried out by suitable
qualified personnel.
Clearance
1. Ensure that the humidifier cabinet is installed in a location where the
humidifier can be serviced correctly.
Electrical
2. Check that the power supply (voltage) conforms to the appliance name plate
on the humidifier side.
3. Confirm that 24Vac is present between tab 1&2 of Control terminal, located
on the control connection PCB. Remove the front top cover to get to this
PCB.
Water
4. Ensure that water is supplied to the humidifier. A shut-off valve must be
placed outside the humidifier.
Once the water shut-off valve is turned ON, ensure that there are no
apparent leaks.
5. Confirm that Drain piping is properly connected with a pitch of least 6.5mm
per 300mm horizontal run.
Steam
6. Check that steam distributors are properly installed into the ventilation duct.
7. Verify that the flexible steam hoses and rigid steam supply pipes are shorter
length than 5m in total and properly sloped and have condensation S traps
wherever required.
Controls
8. Ensure that an air flow switch is installed and properly connected to the
humidifier.
9. Ensure that a High limit duct humidistat is installed, properly connected to
the humidifier and set point is properly adjusted (recommended value: 80%).
10. Verify that a Room humidistat or returned air duct humidistat is installed,
properly connected to the humidifier and set point is properly adjusted.
11. Turn Power ON at the disconnect switch.
12. Confirm the control signal is matching control signal jumper on Main PCB.
Start-up
13.
Proceed to start-up the Humidifier, as follows:
a) Open the front access door of the humidifier cabinet; make sure that manual drain
valve is closed.
b) Verify that there is a humidity demand.
Humidity demand is displayed on the humidifier LCD screen.
c) Start up the humidifier by putting rocker switch located on the humidifier control
panel at the ON position
d) Water will start to flow in and slowly rise in the water level sight glass located on
the side of the evaporation chamber.
Observe for water leak along the water line.
e) Humidifier LCD screen will display the water level with 3 levels of information:
Alarm level / Control level / High level
f)
As soon as Control level is reached, contact will be activated and heater elements
powered.
From a cold start steam will be produced 3 to 5 minutes after contactors closing
g) Observe for water and steam leaks.
Safety Test
14. Check the location of the air flow switch in the system and its operation by stopping the
fan.
With no air movement in the air duct, the humidifier will automatically stop.
Drain and Reset
15. Turn the humidifier OFF, by putting rocker switch of the control panel to the 0 (middle)
position
16. Execute a manual drain, by putting rocker switch of the control panel to the Drain
position
A water jet directed on the water level sensor located in the water level sight glass will
start and create bubbles around it.
17. Reset Air flow switch and humidistat(s) to the proper value, if needed.
End
18. Humidifier is ready for normal operation.
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