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Mitsubishi Electric E Series Data Book page 62

Air cooled chilling unit
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4. System Design
(6) Connecting pipes made from different materials
If different types of metals are placed in direct contact with each other, the contact surface will corrode.
Install an insulating material between pipes that are made of different materials to keep them out of direct contact with
each other.
(7) Piping material
Use hot water output piping material that can withstand heat of 60°C or more. Use hot water input piping material that
can withstand the maximum input water temperature. All piping must be made of SUS or similar material to withstand
corrosion.
4-1-5. Installing the Strainer and Flow Switch
1. Installing the strainer
Install a strainer on the inlet pipe near the unit to filter out suspended solids and prevent clogging or corrosion of the heat
exchanger.
Install a strainer in a way that allows for easy access for cleaning, and instruct the user to clean it regularly.
Operating the units with a clogged strainer may cause the units to make an abnormal stop.Select a location to install a
strainer, taking into consideration the installation angle, insulation thickness, and maintenance space.
<Unit>
Water
side heat
exchanger
Housing joint
2. Installing a flow switch
Install a flow switch that meets the following specifications on the water pipe.
Connect the flow switch to the flow switch contact on the unit.
Minimum flow rate = 12.9 m³/h (215 L/min)
Unit usage range (water flow rate): 12.9 - 34.0 m³/h
MEES19K040
<Construction site>
Air vent valve
Air vent valve
Outlet
Water
On-site piping
Drain valve
Housing joint
*Housing joint are not supplied.
Strainer (20 mesh or more)
(Not supplied)
Inlet
Water
On-site piping
61

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