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technIcal characterIstIcs
The Prestige is a wall-hung condensing boiler meeting the requirements of
“HR-Top” standards in force in Belgium. The boiler is certified in compliance
with “EC” standards as a room sealed appliance: C13(x) - C33(x) - C33s -
C43(x) - C53(x) - C63(x) - C83(x) - C93, but it can also be connected as an
open appliance in category B23 or as a B23P category appliance operating
at positive pressure from the B23P category.
Connection type C63 (x) is prohibited in Belgium.
JACkET
The boiler is enclosed in a steel jacket, which has been treated with
a degreasing and phosphating process, before being stove enamelled
at 220 °C. The inside of this jacket is lined with a layer of thermal and acoustic
insulation, which minimizes losses.
HEAT ExCHANgER
The core of the Prestige is a stainless steel heat exchanger which is a result of
exhaustive research and intensive laboratory tests. This reflects almost 90 years
of experience in the use of stainless steel for heating and hot water generation
systems. The specific geometry of the exchanger has been calculated in order
to obtain a very large Reynolds number through all of its routes. The Prestige
thus achieves an exceptional output remaining stable throughout the boiler’s
lifespan, given that it does not produce any oxidation on the exchanger, which
is manufactured entirely of quality stainless steel.
BuRNER
ACV uses its BG 2000-M burner for the Prestige: this is a modulating air/gas
premix burner providing safe and quiet operation while limiting pollutant
emissions (NOx and CO) to an incredibly low level. Although the ACV BG
2000-M burner is very modern, it uses proven technology and is manufactured
using standard spare parts that are easily available on the market.
TEmPERATuRE CONTROl
The Prestige Mklll is fitted with a regulator controlled by an “ESYS”
microprocessor, which handles the safety functions (ignition, flame
monitoring, temperature limitation, etc,…) and the boiler’s temperature
control. The ESYS also features a weather dependent regulator. Simply
connect the outdoor temperature sensor, available as an option.
However, this regulator can also operate with a standard (on/off) room
thermostat. The temperature of the system is then dependent on the outside
conditions with compensation for the indoor temperature.
Two rotating buttons placed on the control panel are accessible to the
user, enabling adjustment of the temperature of the heating and domestic
hot water. By entering a specific maintenance code into the unit, qualified
installers may access certain parameters, in order to adapt the boiler to specific
requirements. In principle, these are factory preset for all normal applications.
DOmESTIC HOT wATER PREPARATION
It is specially designed to operate only as a heating boiler or in combination
with the whole range of ACV water tanks. The Smart Line range is the number
one choice for domestic or commercial applications.
This Prestige MkIII enables you to choose between two sanitary function
methods.
• Full priority mode: (factory preset) the boiler cuts the heating circuit each
time the domestic circuit requires it.
• Parallel mode: (only with a radiator heating circuit) the boiler functions for
heating and domestic hot water at the same time.
frost protectIon
The boiler is equipped with integrated frost protection: as soon as the outlet
temperature [NTC1 probe] goes below 7 °C, the circulator becomes active.
As soon as the outlet temperature is lower than 3 °C, the burner starts up until
the outlet temperature exceeds 10 °C and the circulator continues to run for
approximately 10 minutes.
If an outdoor temperature probe is connected, the circulator is activated when
the outside temperature drops below the preset threshold.
In order to enable the Prestige boiler to protect the whole system
against freezing, all the valves of the radiators and the convectors should
be completely open.
IntroductIon
