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OPERATING AND
INSTALLATION MANUAL
FLAT TANK-TYPE WATER HEATER FOR
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:
export@dzd.cz
VERTICAL MOUNTING
Electric water heaters
OKHE ONE 30
OKHE ONE 50
OKHE ONE 80
OKHE ONE 100
OKHE ONE 120
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Table of Contents
Related Manuals for Nibe Drazice OKHE ONE 30
Summary of Contents for Nibe Drazice OKHE ONE 30
- Page 1 OPERATING AND INSTALLATION MANUAL FLAT TANK-TYPE WATER HEATER FOR VERTICAL MOUNTING Electric water heaters OKHE ONE 30 OKHE ONE 50 OKHE ONE 80 OKHE ONE 100 OKHE ONE 120 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:...
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Page 2: Table Of Contents
CONTENTS PRODUCT TECHNICAL SPECIFICATION ....................... 4 FUNCTION DESCRIPTION ........................4 ADVICE FOR CUSTOMERS ........................4 1.2.1 HOT WATER CONSUMPTION ..................... 4 1.2.2 ENERGY SAVING ......................... 4 1.2.3 EMERGENCY POWER CONSUMPTION ..................4 DESIGN AND GENERAL HEATER DIMENSIONS ................... 6 OPERATION AND FITTING INSTRUCTIONS ....................8 OPERATING CONDITIONS ........................ - Page 3 CAREFULLY READ THIS MANUAL BEFORE INSTALLING THE WATER HEATER! Dear Customer, Družstevní závody Dražice - strojírna s.r.o., 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.
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Page 4: Product Technical Specification
1 PRODUCT TECHNICAL SPECIFICATION 1.1 FUNCTION DESCRIPTION Tank type water heater (the heater hereinafter) is designed for the accumulation heating of service water by electric energy. Water is heated by an electric element in an enameled thermally insulated tank at the time defined by the power supplier. At the time of the heating, the element is controlled by thermostat on which the desired temperature can be set (ranging from 5 to 75 °C). - Page 5 OKHE ONE OKHE ONE OKHE ONE OKHE ONE OKHE ONE TYPE VOLUME MAX OPERATING OVERPRESSURE IN THE TANK ELECTRICAL CONNECTION 1/N/PE ~ 230V/50Hz RECOMMENDED BREAKER 10 A 16 A INPUT 1100 2000 EL. PROTECTION IP 44 MAX OPERATING TEMPERATURE OF HOT °C WATER (HW) RECOMMENDED HOT...
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Page 6: Design And General Heater Dimensions
1.3 DESIGN AND GENERAL HEATER DIMENSIONS The heater tanks are made of a steel plate and tested by 1.5 multiple of operation pressure value. The inside of the tank is enameled. A flange is welded onto the bottom of the tanks with a flange lid screwed to it. - Page 7 OKHE ONE 30 - 120 Figure 2 3/4" outer OKHE ONE 30 OKHE ONE 50 OKHE ONE 80 OKHE ONE 100 OKHE ONE 120 1112 1327 1552 1135 1360 1150 Table 2 - 7 -...
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Page 8: Operation And Fitting Instructions
2 OPERATION AND FITTING INSTRUCTIONS 2.1 OPERATING CONDITIONS The tank shall only be used in accordance with the conditions specified on the power 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. - Page 9 Mount the water heater in vertical position. The fixing wood screws must have guaranteed spacing t=180 mm and spacing F according to the heater volume (Figure 3) or with hinges. 2 upper hinges are attached to the wall and 2 lower hinges are fitted into the bottom holes on the heater, the lower hinges serve as abutment (Figure Hinges (4 pcs) are included in...
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Page 10: Plumbing Fixture
For proper operation in the horizontal position it is necessary to change the cold water input for hot water output and vice versa (swap of blue and red ring is recommended as well); at the same time it is necessary to remove PEX tube from the left (lower in the horizontal position) mouthpiece. - Page 11 ALLOWABLE MAXIMUM SAFETY VALVE OPERATING PRESSURE IN COLD START-UP OVERPRESSURE OF WATER PIPES PRESSURE [MPa] WATER HEATER [MPa] [MPa] up to 0.48 Table 3 Figure 6 Figure 7 - 11 -...
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Page 12: Electrical Installation
2.4 ELECTRICAL INSTALLATION 2.4.1 GENERAL INFORMATION FOR ELECTRICAL INSTALLATION Perform the connection according to the scheme. Factory connection must not be changed! (Figure 8). The degree of protection of electric parts of the heater is IP 44. Power input of electric element is 2000 W (OKHE ONE 50-120), 1100 W (OKHE ONE 30). -
Page 13: Operating Activity
2.5 OPERATING ACTIVITY After the heater is connected to electric network, the heating element starts heating water. The element is turned on and off by a thermostat. After reaching the temperature set, the thermostat switches off the electric circuit and discontinues water heating. The control light signals if the element is in operation (light is on) or if it is off (the light goes out). -
Page 14: Putting Out Of Service, Discharge
2.7 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. The switch for the supply lead or the fuse cut-outs have to be shut off. -
Page 15: Most Frequent Function Failures And Their Causes
If water contains too many minerals, an expert has to come to remove the scale that forms inside the tank, as well as free sediments. This has to be performed after one or two years of operation. The cleaning is carried out through the hole in the flange - dismantle the flange lid and clean the tank. -
Page 16: Operation Of Thermostat
Do not attempt to repair the failure yourselves. Seek either expert or service help. It does not take much for an expert to remove the defect. When making a repair appointment, report the type and serial number you find on the performance plate of your water heater. 3 OPERATION OF THERMOSTAT 3.1 OPERATING DEVICES OF THE HEATER Electrical installation cover for heaters:... -
Page 17: Temperature Setting
3.1.1 TEMPERATURE SETTING Water temperature is set by turning the thermostat knob. The desired symbol is adjusted against the fixed point on the control panel (Figure 10). Fixed mark on the control panel Upper temperature scope limit (around „Optimum“ temperature 75°C) (around 55°C) Lower limit of... -
Page 18: Transport & Storage Instructions
If you don't use the heater (hot water tank) for longer than 24 hours, or if the facility with heater is unattended, close the cold water inlet to the heater. The heater (hot water tank) shall be used exclusively in accordance with the conditions specified on the performance plate and in the instructions for electric wiring.
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