KOJA Future Series - 10 Humidifying Section, Evaporation Fktk; Operating Conditions; Commissioning

AIR HANDLING UNIT FUTURE
INSTRUCTIONS FOR OPERATION AND MAINTENANCE
Humidifying secon, evaporaon FKTK
30 V. 2.0 2017-02-13
10. HUMIDIFYING SECTION, EVAPORATION FKTK
10.1. Operating conditions
• The maximum permissible temperature for air and water downstream of the humidifier is +40 ˚C.
• The required minimum/maximum permissible water pressure at the connecting
point is 500/1,000 kPa (0.5/10 bar) for circulating water and 150/1,000 kPa (0.15/10 bar) for on-
ce-through water.
CAUTION
Observe also the manufacturer’s instructions for commissioning.
10.2. Commissioning
Before commissioning the humidifier, make sure that the air-conditioning plant including the humidifier in
question has been cleaned and that the filters are installed in their places. Connect the humidifier to the water
supply and let the cells and tray fill up with water. At the same time, make sure that there are no leaks and che-
ck the operation of the overflow pipe.
If circulating water is used, start the pump when the tray is full of water.
When the air-conditioning plant is in operation, monitor the operation of the humidifier and control system first
daily and then once a month as follows:
• Check for water leaks.
• Check for water drops on the humidifier cells. If there are drops, consider using a drop separator.
• Check the operation of the water distribution system (water should be distributed evenly on the cells).
• Make sure that the amount of overflow water is within the designed rate. Decreased overflow rate
may cause calcification in the cells, reducing the performance and shortening the lifetime of the cells.
• Check the condensation water discharge system, i.e., drip tray, piping and water trap. Flush the piping
and fill the water trap. Check that the over-flow water flows freely into the drain.
CAUTION
Observe also the manufacturer’s instructions for commissioning.