Mitsubishi Electric WIZARDX Instructions For Installation, Use And Maintenance Manual page 42

CAUTION:
The cooling circuits must be connected by qualified personnel.
Connection of the cooling circuits, selection of the components, selection of the materials to be used and filling with
refrigerant must be carried out with reference to the installation manual provided with the Mr. Slim condensing units
combined with the WIZARDX unit.
The cooling circuits must also be connected in compliance with the "code of good practice" and in accordance with
the relevant regulations in force in the various countries, taking into account the operating conditions and intended
uses of the system.
Errors in the design and/or connection of the cooling circuits can cause irreparable damage to, or malfunctioning of
the machine.
Incorrect connections between the cooling circuits of the direct expansion coil of the WIZARDX unit and the Mr. Slim
condensing unit can cause irreparable damage to, or malfunctioning of the connected machines
For units with R32 refrigerant charge, the cooling connections must be made entirely outdoor. Under no
circumstances, should they pass through enclosed spaces or areas occupied by people.
Cooling circuit connections must only be completed by brazing.
The direct expansion coil in the WIZARDX units is pressurised with nitrogen or dry air in order to protect the exchanger against the
intrusion of humidity and permit the identification of any leaks due to handling or storage, at the time of use. Before connecting this
coil with the Mr. Slim condensing unit, make sure that it is still pressurized. Otherwise call technical support.
Before connecting this coil to the condensing unit, open the Schrader valves to discharge any nitrogen or dry air inside the coil and
cut the copper plugs of the manifolds using a special pipe cutter.
Use appropriate PPE when doing this.
The panel of the WIZARDX unit for the manifold outlet of the direct expansion coil has a protective plate which is to be removed once
the cooling circuits have been connected.
Attention: plastic collars are applied to prevent damage to the copper pipes entering and leaving the coil. Before brazing, remove the
collars from the panel (both on the inside and on the outside).
After brazing, wait for the pipes to cool down and then put the collars back on again.
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