Stainless steel manifold Termojet with valves, 11 outlets TJ-R-W-11

The Termojet TJ-R-W 11-outlet manifold is a distribution unit for large underfloor heating systems with 11 independent circuits. The body is made of AISI 304 stainless steel, 1.6 mm thick, length — 630 mm. Each of the 11 outlets is fitted with a ball shut-off valve for individual circuit isolation. M30×1.5 sockets on the return manifold accept standard thermal actuators. Designed for large systems where reliability and ease of installation are paramount, and precise balancing will be carried out at the design stage.

Technical Specifications

Operating Principle

Heat carrier from the pump-mixing unit or system enters through the G 1" inlet port and is distributed across 11 circuits via G 3/4" Eurocone outlets. Each ball valve at the outlet provides complete isolation of the corresponding circuit — for maintenance, seasonal shut-off, or staged system start-up. The return manifold combines 11 flows back into the main line. M30×1.5 sockets accept thermal actuators: when a room thermostat is connected, the actuator automatically opens or closes the circuit for the corresponding zone.

Application Scenarios

• Large private house. 11 circuits for a house of 180–250 m² with 8–11 rooms. Particularly convenient where all loops are designed to the same length — no balancing required, valves provide full control.
• Staged commissioning. In an unoccupied house, valves allow only the finished zones to be activated, leaving others closed.
• System with design calculation. If the installer has calculated loop lengths so that their resistance is equal, the valve version is the optimal choice — simpler and less expensive than the flowmeter version.
• Zone automation. 11 thermal actuators M30×1.5 + 11 room thermostats = a fully automated system with independent temperature in each zone. If you wish to switch to balancing — consider the 11-outlet manifold with flowmeters.

Advantages

• Stainless steel AISI 304 — identical material quality to the flowmeter version at a lower price due to simpler fittings.
• Ball valves on all 11 outlets — reliable and durable shut-off equipment requiring no maintenance for years.
• M30×1.5 — a mass-market standard compatible with thermal actuators from leading manufacturers without adapters.
• Eurocone G 3/4" — direct connection of PE-RT 16×2 pipe via the TJ-EC-162 Eurocone fitting.
• Pressure 10 bar / 110°C — a significant reliability margin for any heat source.

Underfloor Heating and Heat Pump

For a large house with a heat pump, an 11-circuit underfloor heating system is the optimal low-temperature scheme, allowing the pump to maintain a COP of 4–5 throughout the season. Every degree of supply temperature above 45°C reduces pump efficiency. The 11-outlet Termojet manifold with valves together with the mixing unit for the manifold form the core of such a system. Learn more about combining a heat pump with underfloor heating on the Termojet heat pump website.

Frequently Asked Questions

When should I choose valves rather than flowmeters for an 11-outlet manifold?
Valves are justified if all 11 loop lengths are calculated to be equal or similar (difference up to 15–20%) and the hydraulic design confirms there is no need for balancing. If loops differ significantly or the system is installed without a design — choose the 11-outlet manifold with flowmeters.

Which manifold cabinet is suitable for an 11-outlet manifold?
The TJ-R-W-11 manifold, 630 mm long, is designed for manifold cabinet No. 04 (for 10–12 outlets). If a mixing unit is installed nearby — take its width into account when selecting the cabinet.