Dražice OKC 250 NTRR/BP
Code: 120990101Related products
Product detailed description
Indirect-fired stationary water heater, boiler Dražice OKC 250 NTRR/BP for water heating
Possibility of additional installation of a heating flange type TPK 168 - 8 and for volumes of 200, 250, 300 liters a threaded body TJ G 6/4"
Most common use:
Year-round heating of domestic hot water with heating water from a gas boiler for connection with priority domestic hot water heating. For the OKC x NTRR type, a combination of a gas boiler and an alternative energy source is possible, or when connecting both heat exchangers in series, an indirect-fired storage tank for boilers over 24 kW.
A newer range of enamelled indirect-fired water heaters for floor standing installation in volumes of 100–300 liters with an enamelled tank and a powerful single heat exchanger, or from the 200 liter type with two heat exchangers for heating domestic hot water from an external source or a combination of different sources. By connecting both heat exchangers in series, a domestic hot water source with an output of up to 57 kW can be achieved. The water heater is equipped with domestic hot water temperature control (thermostat for controlling a three-way valve or circulation pump) for a voltage of 230 V/50 Hz, up to 200 liters with a safety valve and a circulation outlet.
In the lower part of the water heater there is an inspection flange opening for cleaning the inside of the tank and for optionally inserting an auxiliary electric heating element of the TPK series from the accessories. For using the water heater in a solar system, water heaters over 200 liters have a 6/4" connection available, located above the solar heat exchanger, for the electric heating unit TJ from the accessories section.
| Type | OKC 200 NTRR/BP | OKC 250 NTRR/BP | OKC 300 NTRR/BP |
|---|---|---|---|
| Volume [l] | 195 | 245 | 295 |
| Weight [kg] | 111 | 118 | 127 |
| Water heater height [mm] | 1 328 | 1 508 | 1 597 |
| Water heater diameter [mm] | 584 | 584 | 670 |
| Maximum operating pressure of the tank [MPa] | 0,6 | 0,6 | 0,6 |
| Maximum operating pressure of the heat exchanger [MPa] | 1 | 1 | 1 |
| Maximum heating water temperature [°C] | 110 | 110 | 110 |
| Maximum DHW temperature [°C] | 80 | 80 | 80 |
| Heating surface of the lower heat exchanger [m2] | 1 | 1 | 1,5 |
| Heating surface of the upper heat exchanger [m2] | 1 | 1 | 1 |
| Output of lower/upper heat exchanger (LE/UE) [kW] | 2× 24 | 2× 24 | 35/27 |
| Continuous DHW output*/LE ./UE . [l/hour] | 670/650; 1 080** | 670/650; 1 080** | 1 100/760 |
| Heating time from 10 °C to 60 °C (by heat exchanger) [min] | 28/16 | 36/20 | 24/16 |
| Heating time using electric energy from 10 °C to 60 °C (2.2 kW) [hour] | 5,5 | 7 | 8,5 |
| Heating time using electric energy from 10 °C to 60 °C (3–6 kW) [hour] | – | – | 6–3 |
| Electrical protection rating | IP 44 | IP 44 | IP 44 |
| Heat losses [kWh/24 hours] | 1,4 | 1,72 | 1,86 |
Additional parameters
| Category: | indirect-heated stationary |
|---|---|
| Warranty: | 2 years |
| Weight: | 20 kg |
| The item has been sold out… | |
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