Water Connection - SystemAir PGK Serie Instructions De Montage

GB
Assembly
The PGK rectangular duct cooler, with slip joint, is designed to use cooling water as a
refrigerating agent. It consists of a cooling battery with copper tubes and aluminium fins. The cooling
battery should not be used for the direct expansion of the refrigerating medium.
Airflow, water flow and other technical information are to be found in the tables indicating unit capacity.
The cooler should not be installed near a fan outlet or a bend in the duct system where there is a risk that
the air stream above the battery can become irregular, thus resulting in inferior cooling effect
The cooler must be installed so that the finned battery and the condensed water outlet are accessible for
(
cleaning please also consult the section concerning cleaning
The duct cooler should be assembled on the horizontal duct with a choice of any airflow direction.
Fixing is by means of screws and a slip joint.
The condensed water outlet (C, illustration 1) is to be connected via a hydraulic lock in order to avoid air
leakage. N.B. The size of the outlet must be so dimensioned that water does not stay in the drip collector.
The use of an efficient filter to protect the installation and reduce the amount of fouling and consequently
the need for maintenance is recommended (please also consult the section concerning cleaning).
The duct cooler should be mounted after the outlet of the ventilating unit but may, however, be mounted
in front of its inlet if it can be ascertained that the ventilating unit motor and other components are not
adversely affected by the humid air from the cooler.
The outer surfaces of the duct cooler must be insulated so that condensation does not build up on the
outside. Normally also the ducts which transport the chilled air must be insulated. Remember that the
cleaning traps should be easily accessible.

Water connection

Operating data: Maximum operating temperature/operating pressure 100ºC/1,6 Mpa.
While connecting the duct cooler to the piping system, attention must be paid to the following:
1. The connecting pipe to the cooler must not be subjected to torsional or flexural stress while being
connected. Use appropriate tools to counteract this stress during tightening.
2. See that the forces of expansion within the installation or the dead weight of the piping system do not
overload the cooler connections.
3. The water inlet should be connected to the lower pipe (Inlet, illustration 1) and the outlet to the upper
pipe. (Outlet, illustration 1). The inlet is equipped with a drain nipple (A, illustration 1) and the outlet
with an air vent nipple (B illustration 1).
4. After the system has been filled with water, the duct cooler and its connections should be checked
to see that no water leaks out. Any eventual leakage can cause water damage.
5. The cooling battery can be emptied of water by the drain nipple (marked by an A, illustration 1).
Outlet
A
Illustration 1
6
B
Inlet
C
).
CAUTION! If the water in the battery freezes, the battery
can burst apart. This, in turn, leads to the water running
out of the system, which can cause water damage. When
the duct cooler is not in use and there exists a risk of
freezing, the cooler should be emptied of water by the
drain nipple and blown completely dry of water by means
of an apparatus using compressed air.
.