Germany – Central-heating installation work – HZG, SAN, RLT

Main quantities: Heating: Wood chip boiler, 1,700 kW, with discharge, flat grate firing, flue gas cleaning (cyclone + fabric filter), control 1 x Gas boiler, approx. 1,950 kW, incl. fan burner DN80 1 x Air-water high-temperature heat pump, 115 kW, R290, incl. cascade control 3 x Freestanding double-draw steel chimney system, H = 31.7 m 1 x Buffer storage hot water, 63 m³, standing, incl. insulation 1 x Heat distribution / pipe network: Steel pipes, welded, DN15 – DN250 approx. 730 m Fittings (isolating valves, shut-off valves, check valves, strainers) DN15 – DN200 approx. 150 units Centrifugal pumps (grid, boiler, heat pump circuit) 10 units Distributors/collectors DN400, plate heat exchangers 300 kW 2 x Pressure maintenance station incl. membrane expansion vessels (4,000 l) 3 x Underground district heating pipe, plastic jacketed pipe DN200 (approx. 90 m in microtunnel DN500) approx. 315 m Sanitary: Separation station drinking/operating water 1 x Stainless steel pipes, pressed, 15 – 28 mm approx. 130 m Ventilation (combustion air): Rectangular ventilation ducts, galvanized approx. 90 m² Silencers/weather protection grilles/ louvre dampers 6 units