Specifications are subject to alteration without notice.
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6.8
filling with water/glycol mixture
Caution!
The ethylene glycol used is toxic and must never be
consumed!
Accessories used
• Mixing vessel.
• Filling pump for pipes and coils.
5.8.1 Filling
For particulars of the volume to be filled, see information
for the relevant size in the charts in Section 11.
• Blend water/glycol (with 30% admixture of glycol)
into an appropriate mixing vessel and stir.
• Connect the filling hose to the tap in the unit.
Return from coil
Pump
Strainer
Fig. 15.1
• Open the tap.
• Use an appropriate filling pump with hose.
• Fill up the water/glycol mixture until the plastic vessel
is filled halfway (cold side). On the hot side the expan-
sion vessel can be filled until the safety valve opens.
See Fig. 15.1.
• Shut-off the tap.
important!
The system must be vented, see Section 6.8..
It is essential to evacuate all the air out of the system. It is
advisable to run the pumps with connection to an open
vessel and to alternately vent the unit and hoses, and fill
up. See fig. 15..
6.8.2 Venting the system
Vent the system as follows:
• Set the safety switch of the cooling unit in the ON
position.
• Start the pumps.
important!
If you are starting the unit for the first time, first follow
the directions in Section 6, Commissioning.
Return from coil
Pump
Strainer
Fig. 15.2
• Press button 3 TEST in the main menu for 5 seconds.
• Press the arrow button to advance down to Brine pump
press button 4 PROG, press so that the value
will be 1, do the same for the cooling agent pump.
• Open venting plugs by cooling coil and cooling agent
cooler. Cooling coil only on sizes 14 - 18.
• Open the venting nipples on the water connections
gB.Cooler.inSt.060501
