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Free-Cooling System
Glycol Volumes
Note: Volumes listed in table below are in addition to the
fluid volume for standard unit configuration.
Table 3.
Free-cooling system glycol volume
Unit Size
tons
115
130
150
170
180
200
215
230
250
280
310
350
410
450
500
Free-Cooling Fluid Management
NOTICE:
Equipment Damage!
Failure to follow instructions below could result in
equipment damage.
DO NOT USE UNTREATED WATER. Glycol solution
must be utilized 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 qualified
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.
The direct free cooling option circuit consists of copper,
carbon steel, cast iron, zinc, EPDM 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 insure adequate inhibitor
content. It is not advised to dilute a stronger concentrate
due to inhibitor dilution. Glycol fluid 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.
RTAF-SVX001K-EN
Total Glycol Volume
gal
L
59.25
224.27
59.25
224.27
75.36
285.26
75.36
285.26
75.36
285.26
89.97
340.59
89.97
340.59
89.97
340.59
89.97
340.59
201.53
762.89
211.97
802.38
211.97
802.38
247.12
935.44
282.27
1068.50
282.27
1068.50
General Information
13
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