Drazice NADO 500/300 v1 Manual de funcionamiento e instalación - Página 4
Navegue en línea o descargue pdf Manual de funcionamiento e instalación para Caldera Drazice NADO 500/300 v1. Drazice NADO 500/300 v1 8 páginas. Accumulation tank
Imprimir página1 DESCRIPTION
Accumulation tanks serve accumulation of excessive heat from its source. The source may be a solid fuel
boiler, heat pump, solar collectors, fireplace inserts, etc. Some types of tanks allow combination of
connecting even multiple sources.
The NADO type tanks serve accumulation of heat in the heating system and allow heating or preheating of
HSW (Hot Service Water) in an inner tank. Incorporation of an accumulation tank in the heating system with
a solid fuel boiler allows an ideal run of a boiler at favourable temperature during the boiler operation. The
main benefit lies in the period of optimum operation (i.e. with maximum efficiency) when the excessive
unconsumed heat accumulates in the tank.
The tanks are made of steel, without any inner surface treatment, the outer surface of the tank is provided
with a protective paint. The tanks are manufactured in 500 and 750 litre volumes. Individual versions are
additionally equipped with an inner accumulator of 300 and 250 litre volumes, and funnels G1½" mm, with
a possibility to install an electric heating element of TJ 6/4" series. The tanks are equipped with a removable
100 m thick insulation - polyurethane foam (foam rubber) and a lock.
The NADO type enables direct heating of HSW (Hot Service Water) in an inner accumulator, or preheating of
water for another water heater. Connection to a boiler usually allows direct HSW heating in an inner
accumulator to the desired temperature whilst, on the contrary, connection to solar collectors or to a heat
pump only preheats HSW and this tank can be connected to e.g. an electric heater to complete heating of
the water to the desired temperature, or an electric reheat can be fitted in the accumulation tank which is
enabled by a TJ 6/4" series electric heating unit. In the standard version, the flange is blinded.
2 THE DESIGN OF SUITABLE VOLUME AND TANK
INSTALLATION
An ideal size of the accumulation tank is designed by a design engineer, or a person sufficiently qualified
to design heating systems.
Product assembly must be implemented by an authorised person (confirmed in the warranty certificate).
When putting into operation, water has to be filled first into the inner tank for HSW
and the operating pressure inside it has to be kept, only then heating water can be filled
into the outer accumulation tank, otherwise the product may get damaged!
The manufacturer explicitly emphasises the necessity of being particular in testing the tightness
of the heating circuit (radiators, piping joints, floor heating, etc.) with the connection of the accumulation
tank. No pressure grow in the accumulation tank heating water compartment may occur above
the maximum operating pressure of 0.3 MPa, if the heating system is pressurised to higher than the
maximum operating pressure, the inner enamelled tank may get permanently damaged!
No stop fitting can be put between the security fitting of the heating circuit and the accumulation tank!!!
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