Drazice OKC 100 NTR Operating And Installation Manual
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Drazice OKC 100 NTR Operating And Installation Manual

Indirect hot water tanks
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OPERATING AND
INSTALLATION MANUAL
INDIRECT HOT WATER TANKS
OKC 100 NTR
OKC 125 NTR
OKC 160 NTR
OKC 200 NTR
OKC 250 NTR
OKC 200 NTRR
OKC 250 NTRR
Družstevní závody Dražice-strojírna s.r.o.
(Works Cooperative - Dražice - Machine Plant, Ltd.)
Dražice 69, 294 71 Benátky nad Jizerou
tel.: +420 / 326 370 911
fax: +420 / 326 370 980
e-mail:
export@dzd.cz
OKC 100 NTR/HV
OKC 125 NTR/HV
OKC 160 NTR/HV
OKC 80 NTR/Z
OKC 100 NTR/Z
OKC 125 NTR/Z
OKC 160 NTR/Z
OKC 200 NTR/Z

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Summary of Contents for Drazice OKC 100 NTR

  • Page 1 OPERATING AND INSTALLATION MANUAL INDIRECT HOT WATER TANKS OKC 100 NTR OKC 100 NTR/HV OKC 80 NTR/Z OKC 125 NTR OKC 125 NTR/HV OKC 100 NTR/Z OKC 160 NTR OKC 160 NTR/HV OKC 125 NTR/Z OKC 200 NTR OKC 160 NTR/Z...

  • 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 ..................5 DESIGN AND GENERAL HEATER DIMENSIONS ................... 5 OPERATION AND FITTING INSTRUCTIONS ....................16 OPERATING CONDITIONS ........................
  • Page 3 CAREFULLY READ THIS MANUAL BEFORE INSTALLING THE WATER 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.

  • Page 4: Product Technical Specification

    1 PRODUCT TECHNICAL SPECIFICATION 1.1 FUNCTION DESCRIPTION Indirect stationary NTR and NTRR series TANKS are used to prepare HSW in combination with another hot water supply, mostly gas boiler; in NTRR types in combination of two hot water sources (gas boiler + solar system, heat pump).

  • Page 5: Emergency Power Consumption

    The resulting value is expressed in units [kWh/24h] and indicates the amount of power needed to maintain the set temperature. HEATING WATER TYPE PRESSURE LOSS [mbar] HEAT LOSS [kW/24H] FLOW [l/h] OKC 100 NTR OKC 125 NTR 1.05 OKC 160 NTR OKC 200 NTR OKC 250 NTR OKC 200 NTRR...
  • Page 6 Technical description: OKC 100 NTR, OKC 125 NTR, OKC 160 NTR, OKC 200 NTR, OKC 250 NTR, OKC 200 NTRR, OKC 250 NTRR Figure 1 Technical description: OKC 100 NTR/HV, OKC 125 NTR/HV, OKC 160 NTR/HV Figure 2 - 6 -...
  • Page 7 Technical description: OKC 80 NTR/Z, OKC 100 NTR/Z, OKC 125 NTR/Z, OKC 160 NTR/Z, OKC 200 NTR/Z Figure 3 - 7 -...
  • Page 8 OKC 100 NTR, OKC 125 NTR, OKC 160 NTR Figure 4  3/4" outer OKC 100 NTR OKC 125 NTR OKC 160 NTR  1" outer 1067 1255  3/4" inner  1/2" inner 1058 1246 Table 2 - 8 -...
  • Page 9 OKC 200 NTR, OKC 250 NTR, OKC 200 NTRR, OKC 250 NTRR Figure 5  3/4" outer OKC 200 NTR OKC 200 NTRR OKC 250 NTR OKC 250 NTRR  1" outer 1400 1400 1580 1580  3/4" inner 1280 1280 1460 1460...
  • Page 10 OKC 100 OKC 125 OKC 160 OKC 200 OKC 200 OKC 250 OKC 250 TYPE NTRR NTRR VOLUME MAX OPERATING OVERPRESSURE IN THE TANK MAX OPERATING OVERPRESSURE IN THE EXCHANGER ELECTRICAL CONNECTION 1 PE-N ~ 230V/50Hz OF CONTROL ELEMENTS EL. PROTECTION IP 42 MAX TEMPERATURE HSW °C...
  • Page 11 OKC 100 NTR/HV, OKC 125 NTR/HV, OKC 160 NTR/HV  3/4" outer  3/4" outer  3/4" outer  3/4" outer  3/4" outer  Figure 6 1/2" inner OKC 100 NTR/HV OKC 125 NTR/HV OKC 160 NTR/HV 1067 1092...
  • Page 12 RATED THERMAL OUTPUT AT HEATING WATER 24000 32000 32000 TEMPERATURE 80°C AND FLOW 720 l/h TIME OF HEATING BY EXCHANGER FROM 10°C TO 60°C STATIC LOSS Table 6 OKC 80 NTR/Z, OKC 100 NTR/Z, OKC 125 NTR/Z Figure 7 - 12 -...
  • Page 13 OKC 160 NTR/Z Figure 8  3/4" outer  1" outer  3/4" inner  * in OKC 80 NTR/Z - 3/4" outer OKC 80 NTR/Z OKC 100 NTR/Z OKC 125 NTR/Z OKC 160 NTR/Z 1067 1255 Table 7 - 13 -...
  • Page 14 OKC 200 NTR/Z Figure 9  3/4" outer OKC 200 NTR/Z  1" outer 1290  3/4" inner Table 8 - 14 -...
  • Page 15 OKC 80 OKC 100 OKC 125 OKC 160 OKC 200 TYPE NTR/Z NTR/Z NTR/Z NTR/Z NTR/Z VOLUME MAX OPERATING OVERPRESSURE IN THE TANK MAX OPERATING OVERPRESSURE IN THE EXCHANGER ELECTRICAL CONNECTION 1 PE-N ~ 230V/50Hz OF CONTROL ELEMENTS EL. PROTECTION IP 44 MAX TEMPERATURE HSW °C...

  • Page 16: 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 the legally acknowledged national regulations and standards, also conditions for connection defined in the local electric and water works have to be adhered to, as well as the installation and operation manual.
  • Page 17 Mount the anchors by the dimensional drawing (Figure 7, Figure 8, Figure 9) in a 450 mm spacing. Double check the torque of the suspension bolts on the heater and suspend the heater. Using the detent support in the bottom part of the heater make sure it runs in parallel with the wall (Figure 10) in 80-125 L heaters . Figure 10 Figure 11 - 17 -...

  • Page 18: Plumbing Fixture

    2.3 PLUMBING FIXTURE Connecting tanks to plumbing fixtures is shown in (Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, Figure 17). For potential disconnection of the tank, utility water inlets and outlets must be provided with Js 3/4" screw coupling. If the hot utility water (HUW) distribution is equipped with circulation circuit, the reverse pipe is connected to the inlet identified as CIRCULATION.
  • Page 19 PRESSURE [MPa] IN PIPING [MPa] HEATER [MPa] up to 0.48 up to 0.56 up to 0.8 Table 10 CONNECTING A TANK TO A WATER AND HEATING SYSTEM OKC 100 NTR, OKC 125 NTR, OKC 160 NTR Figure 12 - 19 -...
  • Page 20 OKC 200 NTR, OKC 250 NTR Figure 13 - 20 -...
  • Page 21 OKC 200 NTRR, OKC 250 NTRR Figure 14 - 21 -...
  • Page 22 OKC 200 NTRR, OKC 250 NTRR Figure 15 Heater with volume exceeding 200 liters at the outlet hot water piping provide combined temperature and pressure safety fittings according to ČSN EN 1490, or the temperature safety fittings fitted with water temperature sensor placed in the heater or other safety valves DN 20, and the opening overpressure compliant with the maximum operating overpressure of the heater vessel.
  • Page 23 OKC 100 NTR/HV, OKC 125 NTR/HV, OKC 16 NTR/HV Figure 16 - 23 -...

  • Page 24: Connection Of Indirect Tank To Hot Water System

    CONNECTING A TANK TO A WATER AND HEATING SYSTEM OKC 80 - 200 NTR/Z The water installation must follow and meet the requirements and regulations relevant in the country of use! Figure 17 2.4 CONNECTION OF INDIRECT TANK TO HOT WATER SYSTEM It is recommended to install stop valves on the heating water inlet and outlet (for possible dismantling of the heater).

  • Page 25: Electrical Installation

    2.5 ELECTRICAL INSTALLATION 2.5.1 GENERAL INFORMATION FOR ELECTRICAL INSTALLATION • Check the insertion of the thermostat sensor in the thermowell, the so-called insertion all the way. • The tank can be connected to any hot water heating boiler up to the 50 kW power output. To adjust the distance from the wall, connect the wire of the external protective bonding! •...

  • Page 26: First Commissioning

    Wiring of tanks of the below types: OKC 80 NTR/Z, OKC 100 NTR/Z, OKC 125 NTR/Z, OKC 160 NTR/Z, OKC 200 NTR/Z OKC 100 NTR, OKC 125 NTR, OKC 160 NTR, OKC 100 NTR/HV, OKC125 NTR/HV - there is voltage on terminal 2 if tank is heated...

  • Page 27: Putting Out Of Service, Discharge

    Procedure of putting the heater into operation: 1. Check both water and electric installation; for combined tanks, check also the installation to the hot water heating system. Check proper placement of thermostat sensors. The sensors in the thermowell have to be inserted all the way. 2.

  • Page 28: Inspection, Maintenance & Care For The Appliance

    2.8 INSPECTION, MAINTENANCE & CARE FOR THE APPLIANCE During the heating process the water that increases its volume during the heating must drip off the safety valve outlet (in non-pressurised connection this water drips off the combination faucet valve). In full heating (about 65°C) the volumetric water gain is approx. 3% of the tank capacity.

  • Page 29: Most Frequent Function Failures And Their Causes

    2.9 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES FAILURE SYMPTOM INDICATOR SOLUTION Temperature of water is not • LED is not on • Defective thermostat corresponding with the set value Water is constantly dripping off • High input pressure • LED is not on the safety valve •...
  • Page 30 Tank panel OKC NTR/Z - 80-160 L Electric circuit closing indicator lamp Thermostat knob Figure 21 The panel of the OKC NTR, R tanks of 200 to 250 L volumes and of the OKC NTR/HV tanks of 160 L volumes Electric circuit closing indicator lamp Indicator of completed heating Thermometer...

  • Page 31: Temperature Setting

    The panel of the OKC NTR, R tanks of 100 to 160 L volumes and of the OKC NTR/HV tanks of 100 to 125 l volumes Thermostat knob Electric circuit closing indicator Figure 23 Thermostat and no other part of the control panel is not a bearing part which can be used for any handling with the heater.

  • Page 32: Important Notices

    Fixed mark on the control panel Upper temperature range limit (about 80°C) "Ideal" temperature (about 60°C) Lower limit of temp. scope (around 5°C) "Anti-freezing" temperature (about 8°C) Figure 25 4 IMPORTANT NOTICES 4.1 INSTALLATION REGULATIONS Check and exchange the Mg anode regularly. No closing armature may be mounted between the tank and the safety valve.

  • Page 33: Transport & Storage Instructions

    4.2 TRANSPORT & STORAGE INSTRUCTIONS The appliance shall be transported and stored in a dry place, and protected from weather effects with a temperature ranging from -15 to +50°C. During loading and unloading, the instructions stated on the packaging shall be observed. Due to transport and thermal dilatations, excessive enamel may fall off on the bottom of the receptacle in heaters with exchanger.

This manual is also suitable for:

Okc 100 ntr/hvOkc 80 ntr/zOkc 125 ntr/hvOkc 100 ntr/zOkc 160 ntr/hvOkc 160 ntr ... Show all

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