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1
DESCRIPTION OF THE APPLIANCES
1.1
GENERAL REMARKS
Regency Premix boilers consist of a range of 2 models of gas fired cast iron sectional boilers, offering
high efficiency and very low emissions.
Cast iron Heat Exchanger.
Each cast iron sectional heat exchanger comprises:
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one front section
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a variable number of intermediate sections
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one special intermediate section
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one rear section.
All the sections are connected one to each other by means of bi-conical nipples.
Burner.
Each boiler is fitted with a special designed - fan assisted - fully premixed - modulating - gas burner
system, suitable for operation with natural gas.
This burner system is the result of an assembly of the following parts:
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A stainless steel burner-head, partially covered by a special metallic alloy matrix, high resistant to
heat;
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A fan placed before the combustion chamber, equipped with a fully modulating electronic fan-speed
control;
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An air-gas ratio control system, including a 1:1 gas valve and a venturi placed upstream the fan.
Boiler Management Unit.
The boiler is equipped with a Boiler Management Unit, with the following functions:
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Burner safety control
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Boiler temperature control through up to four NTC sensors, monitoring: flow, return, outside
temperature and, if required, DHW temperature;
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Other system devices control, such as DHW three valve.
It includes a display unit with push buttons and digital display (for the temperatures and the burner
status), to directly operate and control the boiler.
The access to the display unit is made possible by the rotation of the plastic cover on the up-front of the
boiler.
Special features.
Following the EU Efficiency Directive, the boilers are classified as LOW TEMPERATURE BOILERS. This
means that the boilers can run with a return water temperature between 35°C and 40°C,
continuously, giving rise to a certain condensate production during normal operation, depending on
the modulation ratio, so depending on the heating system demand (see the following 2.3.4).
1.2
BOILER MODELS
Nominal heat output
Model/number of sections
kW
Part No.
Gas Nat
Regency Premix 70/6
68,6
001616006
Regency Premix 100/8
99,9
001616008
Содержание 001616006
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