Drazice NADO 1000/200v7 Installation Manual - Page 4
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Also for Drazice NADO 1000/200v7: Operation And Installation Manual (6 pages), Operation And Installation Manual (6 pages)
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1 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 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 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. The storage tanks are manufactured in 500, 750
and 1000-litre volumes. The 500-litre version is additionally equipped with a tubular exchanger
of 2.5m
2
surface and the 750 and 1000 litre version with a tubular exchanger of 3.3 m
G1½" mm, with the possibility to install an electric heating element of TJ 6/4" series with an extended cooling
compartment, up to 6 kW. 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 an inner enamelled tank, or preheating
of water for another water heater. Connection to a boiler usually allows direct HSW heating in an inner vessel
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 reheat 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.
2 DESIGNING THE SIZE AND CONNECTION OF
STORAGE TANK TO THE 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 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!
It is necessary to activate the heating circuit and remove potential impurities that are captured
in the filter; after that the system is fully functional.
2
surface and two funnels
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