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OPERATING AND 

INSTALLATION MANUAL 

 

Indirect water tank 

 

OKC 250 NTR/HP 
OKC 300 NTR/HP 
OKC 400 NTR/HP 
OKC 500 NTR/HP 
OKC 750 NTR/HP 

OKC 1000 NTR/HP 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Družstevní závody Dražice 

strojírna s.r.o.

 

Dražice 69, 294 71 Benátky nad Jizerou

 

Phone.: +420 /326 370

 

990

 

Fax: +420 / 326 370

 

980

 

E-

mail: 

[email protected]

 

 

 

Summary of Contents for OKC 1000 NTR/HP

Page 1: ...water tank OKC 250 NTR HP OKC 300 NTR HP OKC 400 NTR HP OKC 500 NTR HP OKC 750 NTR HP OKC 1000 NTR HP Družstevní závody Dražice strojírna s r o Dražice 69 294 71 Benátky nad Jizerou Phone 420 326 370 990 Fax 420 326 370 980 E mail export dzd cz ...

Page 2: ...ND FITTING INSTRUCTIONS 11 2 1 PUTTING THE TANK INTO OPERATION 11 2 2 CONNECTING A TANK TO HOT WATER SYSTEM 12 2 3 PLUMBING FIXTURE 13 2 4 CONNECTION OF TANK TO HOT WATER DISTRIBUTION SYSTEM 14 2 5 CLEANING OF TANK AND EXCHANGE OF ANODE ROD 15 2 6 SPARE PARTS 16 3 IMPORTANT NOTICES 16 3 1 IMPORTANT NOTICES 16 3 2 INSTALLATION REGULATIONS 16 3 3 DISPOSAL OF PACKAGING MATERIAL AND NON FUNCTIONING PR...

Page 3: ...d by responsible person or unless properly instructed by such responsible person The manufacturer reserves the right for engineering modification of the product The product is designed for permanent contact with drinkable water 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 prove...

Page 4: ...ntial inside the receptacle thus reducing effects of corrosion Inside the vessel there is a welded heat exchanger made of steel pipe with enamelled outer coating and connections of hot and cold water circulation and thermostat tank The pipe heat exchanger is only intended for the heating circuit There is a cleaning and revision aperture on the side of the tank ended with a flange of 110 mm clearan...

Page 5: ...MAXIMUM WEIGHT WITHOUT WATER kg 119 133 190 223 259 324 MAXIMUM OPERATING PRESSURE IN THE TANK MPa 1 1 1 1 1 1 MAXIMUM OPERATING OVERPRESSURE IN THE EXCHANGER MPa 1 1 1 1 1 1 MAXIMUM HEATING WATER TEMPERATURE C 110 110 110 110 110 110 MAXIMUM HOT WATER TEMPERATURE C 90 90 90 90 90 90 EXCHANGER HEAT SURFACE m2 2 5 3 2 5 2 6 4 7 0 9 0 EXCHANGER VOLUME L 17 21 32 39 47 63 ENERGY EFFICIENCY CLASS C C ...

Page 6: ... 6 OKC 250 NTR HP Figure 1 OKC 250 NTR HP A 1537 B 660 D 584 E 80 F 1460 G 1060 I 928 J 259 L 209 M 1330 P 355 R 1100 3 4 outer 1 outer 3 4 inner 1 2 inner 6 4 inner ...

Page 7: ... 7 OKC 300 NTR HP Figure 2 OKC 300 NTR HP A 1558 B 750 D 670 E 77 F 1579 G 760 I 895 J 325 L 219 M 1309 P 438 R 1148 1 outer 3 4 inner 1 2 inner 6 4 inner ...

Page 8: ...igure 3 OKC 400 NTR HP OKC 500 NTR HP A 1644 1914 B 812 812 C 852 852 D 700 700 E 55 55 F 1521 1790 G 843 1023 I 1138 1310 J 288 288 L 228 228 M 1081 1253 P 592 592 R 1237 1409 1 outer 3 4 inner 5 4 inner 1 2 inner 6 4 inner ...

Page 9: ...TR HP Figure 4 OKC 750 NTR HP OKC 1000 NTR HP A 2039 2053 B 1017 1117 D 950 1050 D3 225 225 E 105 105 F 1891 1905 G 1123 1173 I 1491 1547 J 383 391 K 727 780 L 294 301 M 1433 1483 5 4 outer 6 4 inner 3 4 inner 5 4 inner ...

Page 10: ... 10 1 2 3 PRESSURE LOSSES Table 2 0 50 100 150 200 250 300 350 400 450 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 mbar m3 h OKC 250 500 NTR HP OKC 250 NTR HP OKC 300 NTR HP OKC 400 NTR HP OKC 500 NTR HP ...

Page 11: ...ay in first the operating and then the safety thermostat b open the hot water valve on the combination faucet c open the cold water inlet valve to the tank d once water starts draining through the hot water valve filling of the tank is completed and the valve must be closed e should a leak of the flange lid occur we recommend tightening the screws of the flange lid f when sanitary water is heated ...

Page 12: ... placed between the safety valve and the heater T fixtures with discharge valve for potential drain of water from the tank have to be mounted on the cold water inlet of the tank The cold water inlet of each individually closable heater must be fitted with a seal test tap or plug to check the non return valve as well as a non return valve and safety valve Heaters with a volume of more than 200 litr...

Page 13: ... provided by the safety equipment manufacturer It is necessary to check the safety valve each time before putting it into operation It is checked by manual moving of the membrane from the seat turning the make and break device button always in the direction of the arrow After being turned the button must click back into a notch Proper function of the make and break device results in water draining...

Page 14: ...flush the heating circuit before the assembly All wiring connections must be properly insulated from heat If the system works with priority heating of HUW using a three way valve always follow the installation instructions of the three way valve s manufacturer Example of group connection of tanks by Tichellman method for equal HSW withdrawal of from all tanks Figure 6 SAFETY VALVE START UP PRESSUR...

Page 15: ...perature of hot sanitary water HSW periodically for a transitional period of time to at least 70 It is also possible to make use of another way of disinfecting HSW PROCEDURE OF EXCHANGING ANODE ROD IN UPPER PART OF THE TANK 1 Turn off control voltage to the tank 2 Drain water from 1 5 tank PROCEDURE Close water inlet in the tank Open the hot water valve on the combination faucet Open the drain tap...

Page 16: ... that the receptacle s flange connection nuts are tightened 3 2 INSTALLATION REGULATIONS Both the electric and water installation must follow and meet the requirements and regulations relevant in the country of use 3 3 DISPOSAL 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...

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