Nibe DRAZICE NADO 800/35v9 Specification sheet

OPERATING AND
INSTALLATION MANUAL
STORAGE TANKS
NADO 800/35v9
NADO 1000/35v9
Družstevní závody Dražice-strojírna s.r.o.
Dražice 69, 294 71 Benátky nad Jizerou
tel.: +420 / 326 370 911
fax: +420 / 326 370 980
e-mail: [email protected]

- 2 -
CONTENTS
1 FUNCTION DESCRIPTION ........................................................................................................................... 4
2 THE DESIGN OF SUITABLE VOLUME AND TANK INSTALLATION................................................................ 4
3 TECHNICAL PARAMETERS.......................................................................................................................... 5
4 IMPORTANT WARNING ............................................................................................................................. 6
5 TECHNICAL DESCRIPTION .......................................................................................................................... 7
6 DIMENSIONS AND CONNECTION .............................................................................................................. 8
7 DISPOSAL OF PACKAGING MATERIAL AND NON-FUNCTIONING PRODUCT.............................................. 9

- 3 -
CAREFULLY READ THIS MANUAL BEFORE INSTALLING THE TANK!
Dear Customer,
The Works Cooperative of Dražice - Machine Plant, Ltd., would like
to thank you for your decision to use a product of our brand.
The product is not intended to be controlled by
a) people (including children) with reduced physical, sensual or mental capacities, or
b) people with insufficient knowledge and experiences unless supervised by responsible person,
or unless properly instructed by such responsible person.
The manufacturer reserves the right for engineering modification of the product.
It is recommended to use the product in indoor environment with air temperatures from +2 °C to +45 °C
and a relative humidity up to 80 %.
Product’s reliability and safety is proven by tests implemented by the Engineering Test Institute in Brno.
Made in the Czech Republic.
Meaning of pictograms used in the Manual
Important information for heater users.
Abiding by the recommendations of the manufacturer serves to ensure trouble-free operation
and the long service life of the product.
Caution!
Important notice to be observed.

- 4 -
1FUNCTION 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.
2THE 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!

- 5 -
3TECHNICAL PARAMETERS
NADO 800/35v9
NADO 1000/35v9
STORAGE TANK CAPACITY
l
820
999
CAPACITY OF STAINLESS EXCHANGE
l
32
32
CAPACITY OF BOTTOM EXCHANGER
l
25
25
CAPACITY OF UPPER EXCHANGER
l
18
25
WEIGHT
kg
224
275
HEATING SURFACE OF STAINLESS
EXCHANGE
m2
8.5
8.5
HEATING SURFACE OF BOTTOM EXCHANGE
m2
3.3
3.3
HEATING SURFACE OF UPPER EXCHANGE
m2
2.2
3.3
MAXIMUM TANK PRESSURE
bar
3
3
MAXIMUM PRESSURE OF STAINLESS
EXCHANGER
bar
6
6
MAXIMUM PRESSURE OF BOTTOM AND
UPPER EXCHANGER
bar
10
10
MAXIMUM TEMPERATURE OF WATER IN
THE TANK
°C
90
90
MAXIMUM TEMPERATURE OF WATER IN
THE EXCHANGER
°C
90
90
MAXIMUM WORKING TEMPERATURE IN
THE HEAT EXCHANGER
°C
110
110
AMOUNT OF 40°C HOT WATER AT 53°C
WATER TEMPERATURE IN THE TANK AND
INLET WATER 15°C / HOT WATER FLOW
l/(l/min)
*620 / 10
*750 / 10
AMOUNT OF 40°C HOT WATER AT 80°C
WATER TEMPERATURE IN THE TANK AND
INLET WATER 15 °C / HOT WATER FLOW
l/(l/min)
*1287 / 10
*1450 / 10
MAXIMUM OUTPUT OF EL. HEATING
ELEMENT OF TJ 6/4" SERIE
kW
2 x 6
2 x 6
ENERGY EFFICIENCY CLASS
C
C
STANDING LOSS
W
118
138
* value stated by calculation
Table 1

- 6 -
4IMPORTANT WARNING
Connection of internal tank for hot water must comply with CSN 060830, i.e. on cold water inlet is necessary
to install a safety valve.
We recommend to start up the heating circle before commissioning and to clean possible dirts
caught in the filter and after this the system would be fully functional.
The appliance has to be mounted at a convenient place, it means that the appliance must be
easily available for potential necessary maintenance, repair or replacement, as the case may
be.
No stop fitting can be put between the security fitting of the heating circuit and the storage
tank!!!
Recommended operating pressure of hot water circle is 0.4 MPa. We recommend installing
return valve and an expansion vessel (min. 4 % of hot water in pipeline) on hot water outlet
to eliminate back pressure impacts.
The reservoir is possible to use only in compliance with conditions stated on performance plate
and with instructions for wiring. It is also necessary to observe terms for connection stipulated
by some local electrical and water companies as same as manual for assembling and operation
besides statutory accepted national regulations and standards.
Shut down the reservoir cold water intake if you are not using the reservoir for longer than
24 hours or if the object with the heater is without presence of any person.

- 7 -
5TECHNICAL DESCRIPTION
Figure 1
1. Bleeding (heating water outlet) - G1"
2. Hot service water outlet - G 1 ¼"
3. Steel receptacle
4. Exchanger for connecting an additional heating source
5. Funnel for additional heating element TJ 6/4 - G 1 ½" (2 units)
6. Buried stainless exchanger for service water heating by flow
7. Exchanger for connecting solar collectors (heat pump)
8. Cold water inlet - G 1 ¼"
9. Inlet into exchanger - G 1"
10. Funnel for connecting an additional heating water source - G 1 ½" (3 units)
11. Outlet from exchanger - G 1"
12. Entry to (solar) exchanger - G1"
13. Funnel for a thermowell - G ½" (6 units)
14. Stratification pipe
15. Outlet from exchanger (solar) - G 1"
16. Water inlet for connection of return water of heating system - G 1½" (TJ 6/4" mustn't be installed)

- 8 -
6DIMENSIONS AND CONNECTION
NADO 800/35v9, NADO 1000/35v9
Figure 2
Table 2
NADO 800/35v9
NADO 1000/35v9
A
167
167
B
887
960
C
1027
1117
d
790
790
E
1400
1530
F
267
537
G
1607
1897
H
1820
2120
I
297
267
J
957
1037
K
1123
1202
L
1950
2250
Lk
1990
2285
M
1560
1862
N
475
505
O
580
650
P
-
850
R
1200
1340
S
1300
1510
T
1300
1460
U
1027
1140

1" outer

1 1/4" outer

1 1/2" inner

1/2" inner

for TJ 6/4"
inner

- 9 -
Thermal insulation NEODUL LB PP
Insulation NEODUL of 80 mm thickness. It consists
of an upper cover, flange cover and hole caps.
Insulation is supplied in a separate packaging.
We recommend that the insulation was fitted
at room temperature.
At temperatures significantly below 20 °C
the insulation shrinks. This disables its easy fitting.
Figure 3
7DISPOSAL OF PACKAGING MATERIAL AND
NON-FUNCTIONING PRODUCT
A service fee for providing return and recovery of packaging material has been
paid for the packaging in which the product was delivered. The service fee was
paid pursuant to Act No 477/2001 Coll., as amended, at EKO-KOM a.s. The client
number of the company is F06020274. Take the water tank packages to a waste
disposal place determined by the municipality. When the operation terminates,
disassemble and transport the discarded and unserviceable heater to a waste
recycling centre (collecting yard), or contact the manufacturer.
14-2-2022