Tender text

BAFA Funding Opportunity for Heating System Optimization Through Hydraulic Balancing and Installation of Separate Control Technology

rendeMIX Multi-Port Mixing Manifold with 3/2-Way Tangential Mixing Valve DN25×G1½(a) Ms Cast Iron (red adapter), valve stem and cap Ms58

For highly efficient two-zone discharge of a buffer tank in a mixed low-temperature circuit via highly efficient operation of a system separation using flow control based on the differential pressure of the pump in the heat generator circuit (i.e., without an additional pump in the primary circuit of the system separation!) while making highly efficient use of the return flow from an unmixed high-temperature circuit

Actuator EMS 240, 230 V AC, 50 Hz, 3.5 VA, 3-point signal, 5 Nm (240 h), 240°, 93s<br/>Dual-circuit manifold assembly with 3 connections to the heat generator (buffer tank or boiler with flue gas heat exchanger), Cu Ø35×1, pipe spacing 100 mm, DN32×G1½(a) flat<br/>1 integrated backflow preventer, Dp 10 mbar, and 1 integrated return differential pressure regulator, Dp 50–70 mbar<br/>Direct heating circuit (HT): Kvs = 9.2 × V'max[100 mbar] = 2.9 m³/h × Q'max[20 K] = 67 kW - Mixing circuit (NT) with ST DN25s: Kvs = 7.2 × V'max[100 mbar] = 2.3 m³/h × Q'max[10 K] = 27 kW × Leak rate < 0.1%<br/>7 thermometers 0–120°C, Ø63 mm, solder sleeves Ms58<br/>7 ball valve fittings, straight-through DN25s, PN20, G1½(i)×Rp1 flat-seal, stuffing box, stem with nylon T-handle<br/>EPP insulation mold, 40 g/l, black, 450×450 mm, Quick-installation kit<br/>With pump flange G1½(i) for DN25 pump on the heat generator supply line (1)

Assembly includes ONE pump compensator—PAS L180—with G1½(a)×G1½(i) screw connections to compensate for a DN25 pump, length 180 mm, insulated (Part No.: 001 338)<br/>Assembly does not include a pump<br/>Model DN 25 – heavy-duty version, PN 10 bar, Tmax 120°C<br/>CAUTION: CANNOT BE USED WITHOUT SYSTEM ISOLATION!

Performance data