Dražice OKC NTR/HR series hot water boilers are designed for low temperature heating sources such as air-to-water heat pumps. It is divided into two compartments - an enamel-coated hot water tank containing a large-area heat exchanger for heat pumps, and a lower tank containing a small storage tank. This is designed not only to maintain a heat reserve but also to make the heating system more stable when the heat pump is used to produce domestic hot water.

Key product features:

• True tank capacity (upper/lower tank): 222/125L, 302/100L;
• Weight (without water): 130kg (200L), 177kg (300L);
• Tank height (with insulation): 1986mm (200L), 1785mm (300L);
• Tank diameter (with insulation): 700mm (200L), 740mm (300L).

Energy efficiency class: 200/120L tank = C, 300/100L tank = B:

Manufacturer: Czechia

User manual (ENG, PDF)