Westen Quasar E - Temps; Mode Hot Water; Positioning the Electrode; Cleaning the Dhw Circuit Filter; 19 Combustion Parameters

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I N S TA L L E R S e c t i o n ( e n )
7113156.01 (1-05/13)
• Check the pressure of the heating system;
• Check the pressure of the expansion vessel;
• Check the fan works correctly;
• Make sure the ue and air ducts are unobstructed;
18.1 TEMPS / MODE HOT WATER
For special areas, where the water is harder than 20 °F (1 °F = 10 mg calcium carbonate per litre of water), install a polyphosphate
dispenser or an equivalent treatment system, compliant with current regulations.
18.2 POSITIONING THE ELECTRODE
The electrode must completely cross the width (L) of the burner element.
18.3 CLEANING THE DHW CIRCUIT FILTER
The DHW lter is housed inside the brass DHW inlet connector (see gure in SECTION A at the end of this manual). To clean the
lter, proceed as described below:
• disconnect the boiler from the mains power supply;
• shut the DHW inlet valve;
• remove the DHW inlet connector;
• remove the lter using a cutting tool, taking care not to use excessive force;
• eliminate any impurities and deposits from the lter;
• reposition the lter inside the brass connector and reconnect the DHW connector.
19. COMBUSTION PARAMETERS
To measure combustion efciency and the toxicity of the products of combustion, the boiler is tted with two dedicated test points.
One connection point is connected to the exhaust duct and is used to measure combustion efciency and the toxicity of the
products of combustion. The other is connected to the air intake circuit and is used to check for the presence of any products of
combustion circulating in installations with co-axial ues.
The following parameters can be measured at the connection point on the ue gas circuit:
• temperature of the combustion products;
• concentration of oxygen (O
2
) or, alternatively, carbon dioxide (CO
2
);
• carbon monoxide (CO) concentration.
The temperature of the comburent air must be measured on the test point located on the air intake ue by inserting the measurement
sensor by about 3 cm.
The combustions analisys shall be done using an analyzer regularly calibrated.