Alarko SUPER FIT 24, Assembly, Installation And Operation Instructions

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1.3 Gas Safety
Gas appliances must be installed only by informed and authorized people in
accordance with rules of local gas distribution institutions. Gas conversion
processes must also be performed by authorized people.
This appliance is produced and certified to operate with natural gas or mix LPG
under gas inlet pressures specified in Section 3.1, Technical Specifications
Table. Operation under any different gas conditions is not allowed.
Adjusted gas type of your boiler is written on type label stuck in the boiler,
unless it is converted to another gas by an authorized person. Make sure that
the boiler is not used with a different gas, other than which it is adjusted for or
it is finally converted to.
1.4 Premix Condensing Technology
With premix technology, i.e. full condensing combi boiler with gas-air pre-mixing
feature, flue gas temperatures are lowered under 55°C while generating flow
water temperature at about 50°C and lower thanks to the exchangers with much
wider heat transfer surface. For flue gas temperatures under 55°C, the water
vapor inside the flue gas condenses, i.e. transforms to liquid from gas form.
Thus, energy is captured before going out the flue, and transferred to the water
inside the exchanger. This is called concealed heat energy. By regeneration of
energy inside the water vapor, it is possible to save up to %30 from fuel costs.
Therefore, set the heating temperature to maximum 50°C in order to get
maximum efficiency from your combi boiler with minimum cost.
As the condensate water is acidic, main exchangers to premix full condensing
combi boilers shall be made of stainless steel or aluminum alloy resistant to
acidic condensate water. Alarko Super Fit gas fired combi boilers use main
exchanger with very high resistance against condensate water.
Combustion is always performed ideally with the premix system, i.e. premixing
of gas and air at the ideal ratio of 1:10 before combustion. This is ensured by the
modulating fan which adjusts its speed as per the capacity requirement and the
venturi which mixes the gas taken by the drawing of the fan from the modulating
gas valve and air in the ideal ratio.