Data Aire gForce Ultra - 6 Glycol Systems; Glycol Concentration; Internal (Fluid) Volume - Downflow Units; Internal (Fluid) Volume - Upflow Units

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6. GLYCOL SYSTEMS
6.1 Glycol Concentration
The system must be lled with water and the appropriate amount of glycol (either ethylene or pro-
pylene) inhibitors to protect against winter freeze-up and premature coil corrosion. 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.
6.2 Internal (Fluid) Volume – Downow Units
Evaporator Model Standard Unit Volume In
Gallons (Liters)
Energy Saver Unit Volume In
Gallons (Liters)
GUWX-022XX
GUGX-022XX
2.5 (9.46) 5.0 (18.92)
GUWX-036XX
GUGX-036XX
7.9 (30.0) 10.1 (38.2)
GUWX-045XX
GUGX-045XX
9.5 (35.9) 10.6 (40.1)
GUWX-070XX
GUGX-070XX
9.9 (37.4) 16.3 (61.7)
GUWX-091XX
GUGX-091XX
12.2 (46.1) 18.8 (71.2)
GUWX-125XX
GUGX-125XX
16.2 (61.3) 6.9 (86.7)
6.3 Internal (Fluid) Volume – Upow Units
Evaporator
Model
Standard Unit Volume In Gal-
lons (Liters)
Energy Saver Unit Volume In
Gallons (Liters)
GUWX-022XX
GUGX-022XX
2.0 (7.57)
4.5 (17.03)
GUWX-036XX
GUGX-036XX
7.9 (30.0)
9.2 (34.8)
GUWX-045XX
GUGX-045XX
9.5 (35.9)
9.2 (34.8)