Trane IntelliPak 2 Series, Инструкция по установке, эксплуатации и обслуживанию

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64 RT-SVX24Q-EN
Figure 48. Space pressure and duct supply pressure tubing schematic
Evaporative-Cooled Condenser Make-up
Water and Drain Line Installation
Water Supply Source
The supply line should be designed to provide a
minimum supply of water within customary domestic
supply pressures – 35 to 60 psig dynamic pressure
(measured with the valve open). This will allow
approximately 30 GPM to enter the sump through the
makeup water valve when the sump is empty. The unit
uses about 2-4 GPM. Attach a hand valve at the inlet for
use during inspection and maintenance. An inlet
strainer is also recommended. Make-up water inlet
connection is a ¾" PVC slip connector. Care must be
taken to ensure the water line upstream of the water
solenoid valve will not freeze. Insulating the line and
utilizing heat tape is recommended if ambient
temperatures below 32° F are expected.
Water Quality
Overall performance of any water-cooled device can be
affected by suspended particulates, mineral
concentration, trash and debris resulting in clogging
and heat transfer loss. The evaporative-cooled
condenser is designed to greatly minimize problems
with these impurities.
However, float valves and solenoid valves are used to
control the incoming water. If the incoming water
contains contaminants, sand or other objects, an
incoming line strainer with a 80 to 100 mesh screen is
required. The inlet line should be flushed prior to
connection to the unit, whether or not there is a
strainer.
N No otte e:: Backflow preventer is field installed and should
only be installed by qualified personnel.
Water Drain Schedule 80 PVC pipe of 1¼" is normally
adequate for sump water drain. Periodically, the sump
is emptied and flushed to eliminate accumulated dirt,
debris, and minerals. Concentration of these foreign
substances will increase as the system operates.
The evaporative process releases essentially pure
water vapor into the atmosphere, leaving the
impurities behind that accumulate in the sump.
Although these impurities are present in the original
make-up water, their concentration will be higher in the
sump discharge. Care and judgment should be
exercised when selecting a discharge site.
Local Site Discharge
Rooftop or simple storm sewer discharge is generally
acceptable. Do not routinely direct the sump discharge
onto an area where these higher concentrations will
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