Dismounting The Water-Water Heat Exchanger; Combustion Parameters; Dismantling, Disposal And Recycling - Baxi ECO5 BLUE Operating And Installation Instructions

17.4 DISMOUNTING THE WATER-WATER HEAT EXCHANGER

The stainless steel plate-type water-water heat exchanger is easily disassembled with a screwdriver (see figure in annex
"SECTION" F at the end of the manual ) by operating as described below:
• drain the system, just the boiler if possible, through the drain tap;
• drain the DHW system;
• remove the two screws at the front securing the water-water heat exchanger and pull it out (B).
To clean the exchanger and/or DHW circuit, use Cillit FFW-AL or Benckiser HF-AL.
Pay great attention when dismantling the individual parts of the hydraulic assembly. Do not use sharp tools, do not apply
excessive force when removing the fixing clip.

18. COMBUSTION PARAMETERS

To measure combustion efficiency and the toxicity of the products of combustion, a hole must be made in the exhaust duct at a
distance from the boiler equal to twice the internal diameter of the flue. The following parameters can be measured inside this hole:
• temperature of the products of combustion;
• concentration of oxygen (O
• concentration of carbon monoxide (CO).
The temperature of the combustion air must be measured close to the point where the air enters the boiler. The hole, which must
be made by the person in charge of the system during commissioning, must be sealed so as to ensure that the exhaust duct is
airtight during normal operation.
The combustions analisys shall be done using an analyzer regularly calibrated.

19. DISMANTLING, DISPOSAL AND RECYCLING

Only qualified technicians are authorised to service the device and system.
Before dismantling the appliance, be sure to disconnect the power supply, close the gas inlet shutoff valve and secure all of the
boiler and system connections.
Dispose of the appliance correctly according to the laws and regulations in place. The appliance and accessories cannot be
discarded along with normal household waste.
More than 90% of the materials that make up the appliance are recyclable.
7729106 (02-05/19)
) or, alternatively, carbon dioxide (CO
2
);
2
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