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1 FUNCTION DESCRIPTION
Storage tanks serve accumulation of excessive heat from its source. The source may be a solid fuel boiler,
heat pump, solar collectors, fireplace inserts, etc.
The NADO type storage tanks serve accumulation of heat in the heating system and allow heating
or preheating of HSW (Hot Service Water) in an inner stainless tank. Incorporation of a storage tank
in the heating system with a solid fuel boiler allows an ideal run of a boiler at favorable 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 storage tank.
The storage tanks are manufactured in 800 and 1000-litre volumes. The tanks and tubular exchangers
are made of steel, without the inner surface treatment, the outer surface of the tank is provided
with a protective paint. Individual versions are equipped with a tubular exchanger and a buried stainless
exchanger of 32 litre volume, and two funnels G1½" with the possibility to install an electric heating element
of TJ 6/4" series. The storage tanks are equipped with a removable 80 mm thick insulation and a lock.
The NADO type enables direct heating of HSW (Hot Service Water) in a stainless exchanger, or its preheating
for another water heater. Connection to a boiler usually allows direct HSW heating in the inner tank
to the desired temperature whilst, on the contrary, connection to solar collectors or heat pump only preheats
HSW and another, e.g. electric, heater has to be used, in order to complete heating the water to the desired
temperature, or final electric heating has to be fitted in the storage tank which is enabled by the electric
heating unit of TJ 6/4" series.
2 THE DESIGN OF SUITABLE VOLUME AND TANK
INSTALLATION
An ideal size of the storage tank is designed by a design engineer, or a person sufficiently qualified to design
heating systems.
Product assembly must be implemented by an authorized 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 storage tank, otherwise the product may get damaged!
The manufacturer explicitly emphasizes the necessity of being particular in testing the tightness
of the heating circuit (radiators, piping joints, floor heating, etc.) with the connection
of the storage tank. No pressure grow in the storage tank heating water compartment may occur
above the maximum operating pressure of 0.3 MPa, if the heating system is pressurized to
higher than the maximum operating pressure, the inner enameled tank may get permanently
damaged!
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