HERZ TS Underfloor Heating Manifold 1" × G3/4", 0–3 l/min, 9 Circuits, 1863209

HERZ 1 8632 09 / 1863209 is a professional DN25 stainless steel manifold set for 9 heating circuits, designed for distribution, regulation and precise hydraulic balancing of underfloor, wall and ceiling heating systems.

The supply manifold is equipped with nine adjustable flow meters with a range of 0–3 l/min. The required heat transfer medium flow can be set individually for each heating circuit and the adjusted value can be read directly from the flow meter scale.

The return manifold features integrated thermostatic valve inserts with M28 × 1.5 thread. Compatible HERZ thermoelectric actuators can be installed on them, allowing each of the nine heating circuits to be controlled separately by a room thermostat or zone control system.

Both the supply and return manifolds are equipped with an air vent valve and filling/draining valve. Mounting brackets with integrated sound insulation elements are also included.

The main connection to the heating system is a G1" female thread, while each heating circuit connection is a G3/4" male thread with conical sealing according to ISO 228-1.

The manifold body is made of stainless steel X5 CrNi 18 10. Valve components are made of brass according to EN 12164, seals are made of EPDM, and springs are made of stainless steel X7 CrNiAl 17 7.

For the HERZ version with flow meters, the maximum operating pressure is 6 bar, the test pressure is 10 bar at +20 °C, and the operating temperature range is from +2 to +70 °C.

Heating water according to ÖNORM H5195 or VDI 2035 is intended as the heat transfer medium. Ethylene glycol or propylene glycol mixtures with water in a concentration of 25–50 vol.% are also permitted, in accordance with the heat transfer medium manufacturer's instructions.

For this 9-circuit model, the installation length L is 543 mm. The total height of the manifold set is 333.6 mm, while the centre distance between the supply and return manifolds is 200 mm.

For this 9-circuit version HERZ specifies the suitable manifold cabinet 1 8569 20. Pipe connection adapters, thermoelectric actuators and main shut-off valves are selected separately according to the heating system configuration.

HERZ 1863209 is a durable and precisely adjustable solution for a nine-circuit underfloor heating system, providing convenient hydraulic balancing, system filling and venting, as well as the possibility to automate each heating zone.

Main advantages

• Designed for 9 heating circuits.
• DN25 / 1" stainless steel construction.
• 9 flow meters 0–3 l/min.
• Individual hydraulic balancing of each circuit.
• Thermostatic valve inserts with M28 × 1.5 thread.
• Suitable for HERZ thermoelectric actuators.
• Integrated air vent valves.
• Integrated filling and draining valves.
• Mounting brackets with sound insulation included.
• G1" main connection.
• G3/4" heating circuit connections.
• Maximum operating pressure 6 bar.
• Operating temperature +2...+70 °C.

Technical information