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Assembly and commissioning<br />
In the case of air-cooled recooling systems, the following minimum<br />
distances from the wall and ceiling should be observed:<br />
<strong>Rittal</strong> <strong>System</strong> <strong>Climate</strong> <strong>Control</strong><br />
1<br />
1 Wall: At least 1x condenser height<br />
2 Ceiling: At least 3x the condenser height<br />
2<br />
Recooling<br />
system<br />
Distance from equipment<br />
Site the recooling system<br />
close to the equipment in<br />
order to avoid long distances,<br />
which could lead to<br />
performance losses. When<br />
selecting the installation site,<br />
care should be taken to<br />
ensure easy access at all<br />
times; this will make maintenance<br />
of the system easier.<br />
Cooling media<br />
Apart from the recooling systems<br />
for oil and emulsion, all<br />
other recooling systems are<br />
only suitable for the cooling<br />
of water or a water/glycol<br />
mixture. When filling the systems<br />
for the first time, water<br />
from the existing supply line<br />
is generally suitable,<br />
although care should be<br />
taken to ensure a consistent<br />
water quality.<br />
However, as satisfactory<br />
results are only rarely<br />
achieved without water treatment,<br />
additives should<br />
always be added to the cooling<br />
water, irrespective of the<br />
installation site. As well as<br />
You should also ensure adequate<br />
ventilation of the room<br />
where the recooling system<br />
is sited. If there is inadequate<br />
ventilation, the temperature<br />
of the room will<br />
increase as a result of waste<br />
heat, leading to impaired<br />
performance of the recooling<br />
system.<br />
protecting against frost,<br />
these also serve to impair<br />
bacterial growth and achieve<br />
optimum corrosion protection.<br />
Pre-mixed additive is available<br />
from <strong>Rittal</strong> in the mix<br />
ratios<br />
● 1 : 2 for outdoor siting,<br />
● 1 : 4 for standard applications<br />
in 10 l and 25 l containers.<br />
See Catalogue 31,<br />
page 668.<br />
Recooling systems<br />
Notes/benefits<br />
When siting the recooling system, the following points<br />
should be observed:<br />
● Connection of an inlet and outlet duct shall require the<br />
manufacturer's prior consent.<br />
− Performance loss (air-cooled recooling system)<br />
● Never site the recooling system in the vicinity of a heater.<br />
− Performance loss<br />
● The recooling system may only be sited on flat, solid surfaces.<br />
The maximum permissible deviation from the vertical<br />
is 2°.<br />
● Connect the equipment to the recooling system using insulated<br />
pipe or hose connections.<br />
● If the equipment is positioned higher than the recooling<br />
system, install a non-return valve upstream in the inlet and<br />
a magnetic valve in the return.<br />
− To avoid overflowing the tank.<br />
● With recooling systems that are intended for covered outdoor<br />
siting, the minimum external temperature is given in<br />
the technical specifications.<br />
● In the case of recooling systems (for water) at temperatures<br />
below zero, a water/glycol mixture should be added<br />
in the prescribed ratio.<br />
● If it is possible to shut off the equipment cycle, a bypass<br />
must be provided in order to protect the pump.<br />
● Under no circumstances must the circulation pump be<br />
allowed to run dry.<br />
− Damage to the pump<br />
Benefits<br />
in brief !<br />
● Individual<br />
project handling<br />
● Project planning/<br />
commissioning<br />
from a single partner<br />
● Comprehensive pipeline<br />
calculation<br />
● Global service network<br />
49<br />
5.4
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