Drazice NADO 300/20v6 Manual de operação e instalação - Página 4
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Imprimir página1 PRODUCT TECHNICAL SPECIFICATION
1.1 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. Some types of storage tanks allow combination of
connecting even multiple sources.
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 vessel. Incorporation of a storage 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 storage tank.
The storage tanks are manufactured in 300, 500, 750 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 additionally equipped with a tubular exchanger and a buried
stainless exchanger of 20, 25, 35 and 40 litre volumes, and two funnels G1½" mm, with the possibility to
install an electric heating element of TJ 6/4" series with an extended cooling compartment. The storage tanks
are equipped with a removable 100 m thick insulation – polyester foam (Symbio) 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 an inner stainless
exchanger 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 of the
water to the desired temperature, or final electric reheat has to be fitted in the storage tank which is enabled
by a TJ 6/4" series electric heating unit with an extended compartment of up to 6 kW output.
1.2 DESIGNING THE SIZE AND CONNECTION OF STORAGE
TANK TO THR HEATING SYSTEM
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 authorised person (confirmed in the warranty certificate).
When putting into operation, water has to be filled first into the inner stainless HSW exchanger
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!
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