EQKC COMBI COOLER
FläktGroup
DC_8931GB 20180202_R0
We reserve the right to make changes without prior notice
Installation and maintenance instructions
8
WATER-COOLED CONDENSER
The water-cooled condenser is activated by an automatic
water regulating valve. The water regulating valve is factory
set and should not be adjusted. Incorrect adjustment can
result in high water consumption.
CONNECTING THE WATER-FILLED CONDENSER
If there is a water-cooled condenser, tap water at a minimum
0.5 and maximum 10 bar pressure must be connected. Tap
water is to be connected using a suitable union. Outgoing
pipes are 15 mm copper pipe. Follow the arrows carefully.
Water leaving the water-filled condenser can be connected
to an accumulator tank so as to recover the heat. In cooling
units with a water-cooled condenser the tap water inlet can
not be closed.
DRAINAGE FROM A WATER-FILLED CONDENSER
When the water-cooled condenser is in use, it must be drained
to an outflow. If this does not take place, there is a risk of water
damage. Drainage takes place through the copper pipe on
the front of the cooling unit beneath the inspection hatch. The
white plastic pipe is for condensate runoff from the supply air
coil and should be connected to a water trap.
Runoff from the water-filled condenser
Runoff from the supply air coil
Run off from the supply coil
Run off from the water-filled condenser
INSTALLATION AND COMMISSIONING
Checklist
BEFORE STARTUP, CHECK THE FOLLOWING:
General
• Transport damage, installation site (good lighting, level
surface etc.)
• Condensation drain
• Oil level in compressors
• Runoff from the water-filled condenser
Refrigerant circuit
• Leakage of refrigerant, leakage of compressor oil
• Crankcase heater in operation
Electrical connection and control – checking for loose cables
• Phase sequence and post-tightening power connections
• Post-tightening all wiring including those for control signals
• Start signal from the air handling unit
• Cooling recovery not activated in the main unit
• Valve governing the water temperature to the chilled beam
circuit connected
• Temperature sensors on the chilled beam circuit connected
Brine – brine circuit leakage
• Is the specific flow for the unit size adjusted (see page 7)
• Is the right flow for the coil circuit adjusted (see page 7)
• Has the system been bled
• Filter installed
• Pumps for the supply air coil and main circuit working
• Pump for the chilled beam circuit working
• Check for the need for an accumulator tank
STARTING THE EUKN COOLING UNIT
The crankcase heaters must have been in operation for at
least 24 hours before commissioning:
1. Set the compressor motor circuit breaker to position 0 (Off).
2. Set the main circuit breaker in the cooling unit to position 1
(On) and activate the control circuit fuse. The compressors
are now heated by the crankcase heater.
Important!
Always study the safety instructions on
Page 1 prior to carrying out any work.
The unit must not be commissioned before
its installation has been inspected in accor-
dance with the following list.
