Hydraulic Links; Main Hydraulic Circuit; Anti-Clogging Protection - Panasonic 140 Installation And Maintenance Manual

10. Hydraulic links

When choosing and installing water pipes, you must consult and observe all current local standards,
CAUTION
regulations and instructions.

10.1. Main hydraulic circuit

The main hydraulic circuit will provide a constant water fl ow on the refrigerating fl uid/water plate exchanger
CAUTION
in case of load variation.
You must design the pipe network with the minimum number of bends and keep the number of changes in height to the strict
minimum. This will help to reduce installation costs and ensure optimum system performance. The pipe network must include:
• A vibration elimination system (e.g.: link hoses available as an accessory) on all pipes connected to the appliance in order to
reduce vibrations and noise transmitted to the building fabric.
• A balancing valve on the water outlet pipe in order to adjust the water fl ow.
• Stop cocks to isolate the hydraulic circuit during maintenance.
• Manual or automatic bleed valves at the highest points on the water circuit.
• Drain points at all low points to allow complete circuit draining
• A circulation pump guaranteeing fl ow necessary for the operation of the ECOi-W unit. This may be a pump fi tted within the
unit.
• A diaphragm expansion tank fi tted with a safety pressure relief valve and draining valve must be visible.
• A low water pressure sensor (available as option), to secure the water pump against cavitation if the water pressure in the
circuit decreases.
• The installation of thermometers and pressure gauges on the heat exchanger inlet and outlet to facilitate day-to-day controls
and system maintenance.
• An element ensuring ground continuity of all piping. An unbalance of grounding connection points can cause electrolytic
corrosion.
The expansion tank must be dimensioned to be able to absorb an expansion corresponding to 2% total
CAUTION
volume of water contained in the installation (exchanger, piping, installations and buffer tank, if present).
CAUTION The warranty does not cover damage due to corrosion resulting from electrolytic phenomena.

10.2. Anti-clogging protection

To avoid any risk of foreign bodies entering the appliance and to guarantee operating performance, it is
CAUTION
imperative to install water fi lter on the ECOi-W inlet pipe.
Failure to install the fi lter to the inlet of the ECOi-W
could result in blockage within the plate heat
exchanger. Should there be insuffi cient water fl ow rate,
it may result in IRREVOCABLE damage.
A fi lter mesh ≤800µm is required.
The manufacturer's warranty is void
CAUTION
if the fi lter supplied with the ECOi-W is not installed to protect the appliance.
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