Vertiv Liebert XD Series, System Design Manual

Page: 147 / 200

NOTICE
Risk of corrosive dilution water. Can cause piping system damage, coolant fluid leaks and substantial
building damage.
The quality of water used for dilution must be considered because water may contain corrosive elements
that reduce the effectiveness of the inhibited formulation. Surface water that is classified as soft (low in
chloride and sulfate ion content—less than 100 ppm each) should be used.
6.13.3 Filling the System
Installation of hose bibs at the lowest point of the system is recommended.
When filling a glycol system keep air to a minimum. Air in glycol turns to foam and is difficult and time-
consuming to remove. (Anti-foam additives are available and may be considered.)
Open all operating systems to the loop. With the top vent(s) open, fill the system from the bottom of the
loop. This will allow the glycol to push the air out of the top of the system, minimizing trapped air. Fill to
approximately 80% of calculated capacity. Fill slowly from this point, checking fluid levels until full.
NOTE: For glycol solution preparation and periodic testing, follow manufacturer’s recommendations.
Do not mix products of different manufacturers.
Diameter (in.) Volume
Outside Inside gal/ft l/m
1-3/8 1.265 0.065
1-5/8 1.505 0.092 1.15
2-1/8 1.985 0.161 2.00
2-5/8 2.465 0.248 3.08
3-1/8 2.945 0.354 4.40
3-5/8 3.425 0.479 5.95
4-1/8 3.905 0.622 7.73
Table 6.20 Volume in standard Type "L" copper piping
6.14 Outdoor Control Enclosure
The Liebert Outdoor Control Enclosure is designed to be used with a Liebert condenser or drycooler to
control one or more pump and/or fan motors. The enclosure is rated NEMA 3R when installed as shown in
Figure 6.16 on the next page.
Vertiv | Liebert® Xtreme Density™ System Design Manual | 147