DryAIR ES200 Fan-Coil, Руководство оператора

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Safety Concerns 2-2
Heat Transfer Fluid (HTF)
*CAUTION! At no time should automobile antifreeze be used in your DRYAIR system.
The use of automobile antifreeze will void your DRYAIR warranty. Always use
propylene glycol as the HTF.*
•
DRYAIR pre-mixed HTF is made up of 50% “Dowfrost ® HTF” or “Boss Chill PG” and
50% water, by weight, to provide freeze protection down to -28°F (-33°C).
•
The Glycol/Water Mixture Chart (Table 2-1) will provide you with more information on the
proper mixture for your area.
Table 2-1 Glycol/Water Mixture Chart
*CAUTION! Whenever coupling or uncoupling the quick-couplers, make sure that the isolation
valves are closed and the pump is turned off. Failure to do so may result in injury caused by hot
HTF.*
•
Always use soft water with a neutral pH level (approx. 7) when preparing HTF for use in the
ES200.
For MSDS information regarding propylene glycol please see Appendix – Heat Transfer Fluid
Information.
Percent Propylene Glycol Freezing Point
By Mass By Volume ºF ºC
0.0 0.0 32.0 0.0
10.0 9.6 26.1 -3.2
20.0 19.4 17.9 -7.8
30.0 29.4 6.7 -14.0
40.0 39.6 -8.1 -22.3
50.0 49.9 -28.9 -33.8
60.0 60.0 -54.9 -48.3