RLC-SVX19J_SHORT-GB
20
The free cooling option circuit consists of copper,
carbon steel, cast iron, zinc, synthetic rubber, brass, and
Aluminum AA3102, AA3003, AA4045 in addition to other
materials that may be in the building loop connected
to the chiller. The inhibited glycol solution should be
selected at desired concentration to ensure adequate
inhibitor content. It is not advised to dilute a stronger
concentrate due to inhibitor dilution. Glycol fl uid should
be free from foreign solid particles. A maintenance
schedule should be selected per the glycol manufacturer’s
requirements to insure adequate protection during
product usage.
Notice: Equipment Damage!
Failure to follow instructions below could cause
equipment damage.
DO NOT USE UNTREATED WATER. Glycol solution
must be utilised with the Direct Free Cooling option.
Glycol percentage should be based on freeze avoidance
requirements. The glycol solution requires an inhibitor
package to be carefully chosen with the aid of a qualifi ed
water treatment specialist to abate corrosion in a mixed
metal system.
The building glycol loop should not be vented to
atmosphere. A closed system is required to limit
oxidation potential within the loop.
Make-up water should be avoided.
Free cooler by-pass valve adjustment
For intervention on free cooler by-pass valve it is
recommended to consult the valve service literature.
For every new referencing of the motor end travel, an
adaptation of the motor should be done by pushing
button 2.
To change the bypass percentage follows below
procedure:
− No tuning is needed on free cooling valve which
always stays on full opening/closure.
− For bypass valve Belimo, minimum opening
can be adjusted by pushing the release button
(4) and by turning handle 5 to 50% opening for
instance (45°)
Optional Free-Cooling
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