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Dražice · EN 12828
Technical Datasheet & 2D Drawing (OKC250NTR-HP)
Dimensional & hydraulic connection schematic
Dražice OKC250NTR/HP; šilumokaičio plotas 2,5m 2 (12 (prie 50-55 o C)) – Dražice OKC250NTR serija inžinerinis komponentas…
Material / Spec: Lakštinis plienas S235JR (3–4 mm), išbandytas 1,5×PN hidrauliniu slėgiu
Akumuliacinėms talpoms – juodas plienas; ŠV boileriams – titano emalis + 850 °C degimas.
EN 12828 sauga: tarp boilerio / akumuliacinės talpos ir apsauginio vožtuvo (3 bar šildymui / 6 bar geriamam vandeniui) bei Statico plėtimosi indo draudžiama montuoti uždaromąją armatūrą.
All [01–06] sub-assemblies, adapters, and gaskets stocked at Eigulių St. 21, Kaunas warehouse (10+ yr service support).
Vytautas engineering compatibility note (OKC250NTR-HP)
Verified mating components for Dražice (OKC250NTR-HP) matched by connection standard (DN / thread / M30×1.5 / RA Click) and hydraulic compatibility.
Yes, this Dražice unit (SKU OKC250NTR-HP, category: Buffer tanks & water heaters) is manufactured to European EN 12828 hydronic standards. Verify the connection thread or nominal size (e.g. DN15 1/2", DN20 3/4", M30×1.5 or Danfoss RA Click) – our engineering advisor Vytautas lists directly compatible mating components on this page.
Genuine Dražice components use corrosion-resistant alloys (DZR brass, bronze or stainless steel) and calibrated flow paths, preventing valve sticking, water-hammer noise and premature seal leaks over 10+ heating seasons.
When installing Dražice OKC250NTR/HP; šilumokaičio plotas 2,5m 2 (12 (prie 50-55 o C)) (OKC250NTR-HP, price on request), check whether you need matching union tailpieces, Eurocone adapters, a mating thermostatic head or actuator. See the compatible parts section above.
Always observe the flow-direction arrow on the housing, depressurise the loop before fitting, and never apply hemp or tape onto flat union gaskets or O-ring cones.
Skirtas buitiniam geriamam karštam vandeniui (DHW) ruošti: vidinis bakas padengtas higienine titano/keramine emale ir apsaugotas magnio anodu (darbinis slėgis 6–10 bar).
Suderinamumą pasitikslinkite su mūsų inžinieriumi (+370 693 97098) arba pagal įrenginio techninį pasą
Source: Manufacturer technical catalog (Danfoss / IMI Hydronic / HERZ / Haier / Gorenje 2025–2026) and LST EN 215 / EN 12828 / EN 303-5 standard
Verification note: Solid-fuel boiler door aperture and flange dimensions vary by production year and kW rating – before ordering a door conversion kit or pellet burner, verify exact dimensions against the boiler passport or with a „Gilės inžinerija“ engineer (+370 693 97098).
Confirm that OKC250NTR-HP connection matches the supply/return pipework and flow direction arrow.
Depressurise the heating circuit, fit the union tailpiece and tighten to factory torque.
Adjust the flow scale (Kvs / l/h) or controller setting according to room or boiler loop load.
Refill the loop, vent trapped air and verify leak-free operation under operating temperature.
Engineer pro tip: When installing Dražice (OKC250NTR-HP), never wind hemp onto flat gasket seats or Eurocone O-ring cones – seal only tapered pipe threads.
Black quartz crystal ignition element (tinka Megatherm MPB, Pelltech, Viadrus, Kalvis)
