AQUAKOND AKY
CONDENSING BOILER
9
code HC0048.10GB ed.B-1811
AKY
3.
TECHNICAL FEATURES
AquaKond thermal unit, running with natural gas or LPG, has
been designed to meet heating requirements of environments
such as garages, body shops, carpenter’s shops, industrial and
commercial buildings, etc..
AquaKond system consists of a boiler module, to be installed
outside the room to be heated, and one or more fan units to be
positioned inside the room.
The system combustion circuit, located in the boiler, is completely
outside. Therefore, both the gas circuit and the combustion
fume circuit [B23P in standard configuration] are outside the
room to be heated.
The system can operate independently. To start up the unit,
simply connect it to the gas mains and to the mains power supply.
The boiler is equipped with the antifreeze protection, which is of
course operated by power supply; to prevent any frost problem
in the absence of power supply, refill the system with a water-
glycol mix in a percentage that varies according to external
operating temperatures [see below].
Upon delivery, AKY032 and AKY034 models have already been
refilled with a 30% water-glycol mix, in order to avoid liquid
freezing in case of external temperatures up to -15°C.
AKY050, AKY070 and AKY100 models have not been refilled as
the size of the boiler expansion reservoir is not able to contain
the whole volume of the circuit liquid.
AKY boilers are compliant with regulations EN15502-1 and
EN15502-2-1.
Condensing and premixing technology, together with flame
modulation, allow achieving efficiency above 108%.
The boiler exchanger, made of stainless steel, ensures a high
yield and a high corrosion resistance.
The burner is made entirely of stainless steel with special
mechanical solutions to ensure optimal reliability and performance
levels, as well as high thermal and mechanical resistance.
According to the model, the different remote controls (optional)
allow operation parameter setting, ambient temperature control,
time programming, working phase and fault display.
Inherent Safety
The efficiency increase at minimum power is achieved by using
a sophisticated air/gas mixing technique and by regulating at
the same time the combustion air flow and the fuel gas flow.
This technology increases the equipment safety as the gas valve
supplies the fuel according to the air flow, based on an adjustment
preset in the factory. Unlike atmospheric burners, the CO
2
content
remains constant throughout the boiler operating range, allowing
the boiler to increase its efficiency when the heat output reduces.
If there is no combustion air, the valve will not supply gas; if
the combustion air flow reduces, the valve will automatically
reduce the gas flow yet will keep its combustion parameters
at optimal levels.
Low emissions
The premixed burner, in combination with the air/gas valve,
ensures "clean" efficient combustion having low emissions.
3.1. Models and Efficiency
AKY boilers are of condensing type with modulating burner.
All the boilers are condensing type with seasonal efficiency
ErP ≥90% (corresponding to a Class A Energy Efficiency). AKY
series boilers are in compliance with the efficiency demand set
forth by all regional resolutions, even the strictest ones.
Water operating temperature is 72°C.
Efficiency with maximum heat output is greater than 100%.
All models are supplied as standard with an electronic circulator
characterised by variable speed and low electrical consumption.
Control accessories, such as ordinary remote control,
SmartEASY/WEB, may be used with all models.
All models have been designed to achieve efficiency above 100%
with respect to the lower calorific value, when the boiler supplies
maximum heat output, and 108% with minimum heat output.
The boiler efficiency, with water delivery at 72/75°C, has been
tested and certified by the certification body.
By means of the SmartEASY/WEB remote control [optional], it
is possible to use the "ambient compensation" function (PID)
that allows to reduce water delivery temperature, "sliding
temperature", in inverse proportion to ambient temperature
increase, thereby reaching boiler efficiency above 108% [Hi].
N
ote: to gain access to financing allowed for by the
current budget, concerning single thermal systems
with heat output above 100kW, an ambient thermostat with
ambient compensation function, or sliding temperature, and
the circulator characterised by variable flow must be used.
AKY032, AKY034, AKY050 and AKY070 use the "cold door"
exchanger, which allows to further reduce the heat losses in
the housing, increasing the boiler yield.
