CONTENTS TECHNICAL SPECIFICATION OF PRODUCT ....................4 FUNCTION DESCRIPTION ........................4 ADVICE FOR CUSTOMERS ........................4 HOT WATER CONSUMPTION ..................... 4 1.2.1 1.2.2 ENERGY SAVING ......................... 4 DESIGN AND GENERAL HEATER DIMENSIONS ................... 5 OPERATION AND FITTING INSTRUCTIONS ....................16 OPERATING CONDITIONS ........................
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READ CAREFULLY THE BELOW INSTRUCTIONS PRIOR TO THE INSTALLATION THE HEATER! 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. With this guide, we will introduce you to the use, construction, maintenance and other information on electrical water heaters.
1 TECHNICAL SPECIFICATION OF PRODUCT 1.1 FUNCTION DESCRIPTION Indirect stationary heaters of NTR and NTRR series are used for HSW water heating in conjunction with another source of heating water, most often a gas boiler, for NTRR types combination of two heating water sources (gas boiler + solar system, heat pump).
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TYPE OKC 100 OKC 125 OKC 160 OKC 200 OKC 200 OKC 250 OKC 250 NTRR NTRR CAPACITY MAX. OPERATING OVERPRESSURE IN THE TANK MAX. OPERATING PRESSURE IN THE EXCHANGER EL. PROTECTION IP 44 MAX. °C TEMPERATURE OF RECOMMENDED °C TEMPERATURE MAX.
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OKC 100 NTR/HV, OKC125 NTR/HV, OKC160 NTR/HV Figure 7 OKC 100 NTR/HV OKC 125 NTR/HV OKC 160 NTR/HV 1046 1087 1041 1082 *The height from the bottom edge of the heater to the end of the pipe inlet and outlet.
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OKC 100 OKC 125 OKC 160 TYPE NTR/HV NTR/HV NTR/HV CAPACITY MAX. OPERATING OVERPRESSURE IN THE TANK MAX. OPERATING OVERPRESSURE IN THE EXCHANGER IP PROTECTION IP 44 MAX. HOT WATER TEMPERATURE °C RECOMMENDED HSW TEMPERATURE °C MAX. WEIGHT OF THE HEATER WITHOUT WATER EXCHANGER HEAT SURFACE 1.08...
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OKC 80 NTR/Z, OKC 100 NTR/Z, OKC 125 NTR/Z, OKC 160 NTR/Z, OKC 200 NTR/Z Upper and lower Upper hinge and Hinge 160,180, 200L support 4 anchor bolts 50-125L Dimensions 450mm and J 2 anchor bolt Check before drilling Figure 8...
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OKC 80 OKC 100 OKC 125 OKC 160 OKC 200 TYPE NTR/Z NTR/Z NTR/Z NTR/Z NTR/Z CAPACITY MAX. OPERATING OVERPRESSURE IN THE TANK MAX. OPERATING PRESSURE IN THE EXCHANGER EL. PROTECTION IP 45 MAX. TEMPERATURE OF HSW °C RECOMMENDED HSW TEMPERATURE °C HEIGHT OF THE HEATER 1046...
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TYPE OKCV 125 NTR OKC 160 NTR OKCV 180 NTR OKCV 200 NTR CAPACITY MAX. OPERATING OVERPRESSURE IN THE TANK MAX. OPERATING PRESSURE IN THE EXCHANGER EL. PROTECTION IP 44 MAX. TEMPERATURE OF HSW °C RECOMMENDED HSW °C TEMPERATURE MAX. WEIGHT OF THE HEATER WITHOUT HEATER EXCHANGER HEAT SURFACE 0.75...
2 OPERATION AND FITTING INSTRUCTIONS 2.1 OPERATING CONDITIONS The tank shall only be used in accordance with the conditions specified on the performance plate and in instructions for electric wiring. Besides legally acknowledged national regulations and standards, also conditions for connection defined in local electric and water works have to be adhered to, as well as the installation and operation manual.
Figure 10 2.3 PLUMBING FIXTURE Connecting heaters into water system in shown in Figure 11, Figure 12, Figure 13. For potential disconnection of the heater, the service water inlets and outlets must be provided with screw coupling Js 3/4“. If the hot service water (HSW) distribution is equipped with circulation circuit, the reverse pipe is connected to the inlet identified as CIRCULATION.
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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.
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Figure 12 0 - Air outlet valve U – Shut-off valve P1 - Safety valve with backflow flap P2 - Safety valve for heating circuit M - Manometer Z – Test valve V - Drain valve Figure 13 - 19 -...
2.4 CONNECTION OF INDIRECT HEATER TO HOT WATER HEATING SYSTEM It is recommended to install stop valves on the heating water inlet and outlet (for possible dismantling of the heater). The valves have to be as close to the heater as possible to avoid higher thermal losses.
2.6 PUTTING OUT OF SERVICE, DISCHARGE If the hot water heater is put out of service for a longer time, or if it is not going to be used it has to be drained and disconnected from the electric supply network on all poles. The switch for the supply lead or the fuse cut-outs have to be shut off.
be open in order to avoid creating under pressure that would prevent water discharge. This has to be performed after one or two years of operation. The cleaning is carried out through the hole in the flange by: draining the boiler, dismantling the flange lid and cleaning the tank. A new sealing has to be used for re-fitting.
3 IMPORTANT NOTICES 3.1 INSTALLATION REGULATIONS − Check and exchange the Mg anode regularly. − No stop valves can be put between the heater and the safety valve. − If the overpressure in the eater main exceeds 0.6 MPa, a reduction valve must be mounted before the safety valve.
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