Preliminary Operations For Lc Units; Preliminary Operations For The Source Circuit; Preliminary Operations For The Fc/Ng Source Circuit - Swegon BlueBox Omega Sky Installation, Use And Maintenance Manual

Table of Contents

7.1.3

Preliminary operations for LC units

In addition to the previous general checks, further checks are needed for units with remote condenser exchanger:

- make sure the fans are turning the right way;

- connect the signals of the thermal safety devices of the fans to the terminals arranged inside the electrical control panel

of the unit, as shown in the wiring diagram;

- make sure the safety valves have been installed correctly and that their number and type are as indicated in the refri-

gerant diagram of the unit.

7.1.4

In addition to the previous general checks, for the source circuit, also check:

- correct installation of the dry cooler in accordance with the supplier's instructions;

- that the hydraulic connection of the dry cooler complies with the directions present in the unit and in the dry cooler;

- that the installer has prepared an expansion vessel of suitable capacity for the water volume of the system;

- that the hydraulic system has been filled with an antifreeze solution, with the percentage of glycol required by the ope-

rating conditions;

- that the hydraulic system has been bled, to remove any remaining air, by filling it gradually and opening the bleed de-

vices on top.

7.1.5

In addition to the previous general checks, for the source circuit, also check:

- that the hydraulic circuit is made as described in this manual and in the documentation supplied with the unit;

- that the dry cooler is installed in accordance with the supplier's instructions;

- that the hydraulic connection of the dry cooler complies with the directions present in the unit and in the dry cooler;

- correct installation of the 3-way valve as indicated in the hydraulic diagram and the wiring diagram, if this is to be carried

out by the installer;

- correct installation of the decoupling exchanger as indicated in the documentation supplied with the unit, if this is to be

carried out by the installer;

- correct installation of the probes for measuring the water temperature in the hydraulic circuit and of the external air

temperature probe as indicated in this manual and in the documentation supplied with it;