HERZ TS Underfloor Heating Manifold 1" × G3/4", 0–3 l/min, 11 Circuits, 1863211

HERZ 1 8632 11 / 1863211 is a professional DN25 stainless steel manifold set for 11 heating circuits, designed for distribution, regulation and precise hydraulic balancing of underfloor, wall and ceiling heating systems.

The supply manifold is equipped with eleven adjustable flow meters with a range of 0–3 l/min. The required heat transfer medium flow can be individually adjusted for each heating circuit and the set 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, allowing each of the eleven 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.

For the 11-circuit model, the installation length L is 643 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.

Pipe connection adapters, thermoelectric actuators and main shut-off valves are selected separately according to the heating system configuration. HERZ does not specify a particular minimum manifold cabinet article number for the 11-circuit version in the technical table.

HERZ 1863211 is a durable and precisely adjustable solution for an eleven-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 11 heating circuits.
• DN25 / 1" stainless steel construction.
• 11 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