Data Aire gForce GT series - Glycol Systems Information; Glycol Concentration; Internal Volume - Downflow Units; Internal Volume - Upflow Units

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5.0 GLYCOL SYSTEMS
5.1 Glycol Concentration
Thesystemmustbelledwithwaterandtheappropriateamountofglycol(eitherethyleneorpro-
pylene) to protect against winter freeze-up. To achieve the approximate glycol concentration, it is
necessarytoknowthetotalsystemvolume.Thisconsistsofthesumoftheuidcoolervolume,the
evaporator unit volume and the volume of the inter-connecting piping.
The following tables can be used for arriving at an approximate system volume. After installation,
the glycol percentage should be checked. The glycol percentage should also be checked at regular
intervals to ensure freeze protection.
5.2 Internal (Fluid) Volume – Downow Units
EVAPORATOR
MODEL
STANDARD UNIT
VOLUME (GALLONS)
ENERGY SAVER UNIT
VOLUME (GALLONS)
GFGD007 2.0 3.5
GFGD011 2.5 3.5
GFGD014 2.5 5.0
GFGD018 2.5 5.0
GFGD028 4.5 N/A
GFGD035 5.0 N/A
GFGD046 5.5 N/A
5.3 Internal (Fluid) Volume – Upow Units
EVAPORATOR
MODEL
STANDARD UNIT
VOLUME (GALLONS)
ENERGY SAVER UNIT
VOLUME (GALLONS)
GFGU007 1.6 3.0
GFGU011 1.6 3.0
GFGU014 2.0 4.5
GFGU018 2.0 4.5
GFGU028 4.5 N/A
GFGU035 5.0 N/A
GFGU046 5.5 N/A