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for mounting an additional heating element. Such version is used when the heater is connected to either a solar system 
or a system with a heat pump, to heat water in the upper part of the heater to the temperature required. The insulation of 
the heater consists of a 100 mm polyurethane foam without CFCs content. The tank shell is made of painted steel sheet; 
connecting parts are metal-coated.

 

 

3.

 

IMPORTANT NOTICES 

 

-

 

Without a confirmation of both electric installation and assembly being performed by an authorised company, 
the warranty certificate is invalid. 

-

 

Check and exchange the Mg anode regularly. 

-

 

No stop valves can be put between the heater and the safety valve. 

-

 

All hot water outputs must have a combination faucet. 

-

 

Before filling the heater with water for the first time, it is recommended to fasten the flange connection nuts of the 
tank. 

-

 

It is not allowed to handle the thermostat, aside from temperature resetting with a control button. 

-

 

All  electric  installation  handling,  setting,  and  regulation  feature  exchange,  may  only  be  implemented  by  a  service 
company. 

-

 

The thermal fuse must not be turned off!

 In case of thermostat defect, the thermal fuse interrupts electric power 

input to the heating element if the water temperature in the heater exceeds 90 °C.

 

-

 

As an exception, the thermal fuse may also switch off due to water overheating caused by overheating the hot water 
heating system boiler (in case of a combined heater). 

-

 

We recommend you operate the heater with one type of energy.

 In case a solar system is connected to the bottom 

exchanger, it is necessary to connect a TJ 6/4" line element in the coupling above the heater for potential additional 
heating.

 

 
 

4. 

PUTTING THE HEATER INTO OPERATION 

 
After connecting a heater to the water main, the hot water heating system, the electric network, and after testing its 
safety valve (based on the valve manual attached), the heater may be put into operation. 

 

Procedure: 

a)

 

Check both water and electric installation; for combined heaters, check the installation to a hot water heating 
system. Check proper placement of operating and safety thermostat sensors. The sensors must be inserted all the 
way in; first the thermostat and then the safety fuse.

 

b)

 

open the hot water valve on the combination faucet;

 

c)

 

open the cold water inlet valve to the heater;

 

d)

 

when the water starts flowing through the hot water valve, the filling of the heater is finished and the valve 
needs to be closed;

 

e)

 

if there is a leakage in the flange lid, we recommend fastening the flange lid bolts;

 

f)

 

fasten the electric installation cover;

 

g)

 

when heating service water heating by electric energy, turn on the electricity (for combined heaters, the heating 
water inlet to the heating insert must be closed);

 

h)

 

when heating service water with electric energy from the hot water heating system, turn the electricity off and 
open the valves of heating water input and output, possibly de-aerate the exchanger. When commencing 
operation, flush the heater until the cloudiness in the water is gone.

 

 
 

 
 
 
 
 

 
 

Summary of Contents for OKC 1500 NTR/1Mpa

Page 1: ...Pa OKC 800 NTRR 1 MPa OKC 1500 NTR 1 MPa OKC 1500 NTRR 1 MPa OKC 2000 NTR 1 MPa OKC 2000 NTRR 1 MPa Družstevní závody Dražice strojírna s r o Works Cooperative Dražice Machine Plant Ltd Dražice 69 29471 Benátky nad Jizerou Tel 326 370911 fax 326 370980 www dzd cz dzd dzd cz ...

Page 2: ...junction with another source of heating water most often a gas boiler The NTRR types combine two sources of heating water gas boiler a solar system or a heat pump Their nominal performance provides sufficient amount of hot water for large flat units premises restaurants and similar establishments In case of increased hot water consumption these tanks heat water continuously operating similarly to ...

Page 3: ...in case of a combined heater We recommend you operate the heater with one type of energy In case a solar system is connected to the bottom exchanger it is necessary to connect a TJ 6 4 line element in the coupling above the heater for potential additional heating 4 PUTTING THE HEATER INTO OPERATION After connecting a heater to the water main the hot water heating system the electric network and af...

Page 4: ...erature C 110 110 110 Max hot water temperature C 95 95 95 Heating surface of the bottom top exchanger m 2 2 76 1 2 3 5 1 75 4 2 0 Bottom top exchanger performance for temperature drop 80 60 C kW 36 4 19 2 38 9 26 4 71 5 41 9 Hot water1 permanent performance bottom top exchanger l hr 627 330 670 454 761 503 Heating time by bottom top exchanger for temperature drop 80 60 C min 70 60 128 94 155 108 ...

Page 5: ...ast 20 higher than the maximum pressure in the water main If the water main pressure exceeds such value a reduction valve must be added to the system No stop valves can be put between the heater and the safety valve During the assembly follow the guide provided by the safety equipment manufacturer Before putting the safety valve into operation it always needs to be checked by manual removal of the...

Page 6: ...emises Premises with tub or shower to hot service water heating system c to the hot water heating system ČSN 06 0320 Thermal systems in buildings Hot water preparation Design and Project Engineering ČSN 06 0830 Thermal systems in buildings Protecting devices ČSN 73 6660 Internal water mains ČSN 07 7401 Water and steam for thermal energy equipments with working steam pressure up to 8 MPa ČSN 06 101...

Page 7: ...eated by a gas boiler and solar collectors controlled by a three way valve An example of a group heater connection for steady hot water consumption from all tanks using Tichelmann s method OV Heating water TUV Hot service water SV Cold water 1 Return valve C Circulation 2 Pump ...

Page 8: ... time by exchanger for temperature drop 80 60 C min 262 155 86 73 Performance for temperature drop 80 60 C kW 28 9 44 2 71 5 81 4 Permanent performance l hr 498 761 1230 1400 2000 NTRR top exchanger surface 2 00 m2 Heating time by exchanger for temperature drop 80 60 C min 160 108 70 63 Performance for temperature drop 80 60 C kW 21 2 29 2 41 9 46 3 Permanent performance l hr 364 503 721 797 NL Po...

Page 9: ...eater 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 boiler packages to a waste disposal place determined by the town When the operation terminates disassemble and transport the discarded and unserviceable heater to a waste recycling centre collecting yard or contact the manufacturer 1 1...

Page 10: ...ection of the arrows to put the two insulation sides together so that see Fig 1 the openings in the insulation fit the boiler inlets and outlets It must be secured that both halves of the closure are not further than 20 mm apart before closing see fig 2 No foam shall get into the zip fastener on closing After the insulation coat is properly mounted and the closure closed insert the top lid made of...

Page 11: ...11 15 CONSTRUCTION HEATER PARAMETERS OKC 800 NTR 0 6 MPa OKC 800 NTRR 0 6 MPa ...

Page 12: ...B 442 452 C 1117 1152 D 1100 1200 d 1000 1100 E 1217 1252 F 1825 1997 G 437 447 H 1167 1202 I 1354 1472 J 1494 1612 K 1825 1997 OKC 1500 NTRR 1 MPa OKC 2000 NTRR 1 MPa A 2240 2430 B 442 452 C 1067 1090 D 1200 1300 d 1000 1100 E 1217 1252 F 1342 1393 G 1722 1713 H 1825 1997 I 437 447 J 1167 1202 K 1354 1472 L 1494 1612 M 1825 1997 ...

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