manifold Termojet with flow meters for 14 outlets, stainless steel

Termojet TJ-W-14 manifold with 14 outlets — a distribution unit for large underfloor heating systems: houses with 10–14 floor circuits or for facilities where several rooms have two circuits each. Profile DN40 in AISI 304 stainless steel, wall thickness 1.6 mm, length 780 mm. Each outlet is equipped with a flow meter 0–5 l/min and a socket M30×1.5 for a thermal actuator.

Technical Specifications

Operating Principle

The heat carrier from the pump-mixing unit or heat pump enters the G 1" main inlet of the manifold and is evenly distributed across 14 outlets. Each outlet is a separate floor circuit with its own flow meter. The rotameter with a transparent cap displays the actual flow rate in l/min: for 14 circuits of different lengths, this is the only reliable way to ensure that each room receives the calculated amount of heat carrier. The shut-off valve allows reducing the flow in a short circuit and redistributing it to longer loops without complex on-site hydraulic calculations.

Where It Is Used

• Large private house. 10–14 rooms or zones — each floor heating circuit connects to a separate manifold port. The 780 mm length allows accommodating the entire manifold in the manifold cabinet No. 05 (12–14 outlets).
• Commercial or office facility. Office, café, shop with underfloor heating in several zones — 14 circuits allow covering any floor plan.
• Implementation of complex schemes. Some outlets are for underfloor heating circuits, others for low-temperature fan coils or convectors in heat pump systems.
• Zone automatic control. M30×1.5 actuators in 14 sockets + room thermostats: each zone maintains its own temperature, unnecessary circuits are closed automatically.
• Heat pump system. A large facility with underfloor heating is an ideal load for a powerful heat pump — a mixing unit ensures the required supply temperature.

Advantages of the Termojet TJ-W-14 Manifold

• Stainless steel AISI 304 — the only material that withstands long-term operation in an aggressive heat carrier environment without corrosion and deposits, unlike brass manifolds.
• 14 flow meters 0–5 l/min — a complete picture of hydraulic balancing: every circuit is visible, any imbalance is detected and eliminated in minutes.
• M30×1.5 standard on all 14 sockets — install actuators from any manufacturer that meets the industry standard without adapters.
• G 3/4" Eurocone — connection of PE-RT 16×2 pipe through a Eurocone 16×2, DIN EN 16313 standard.
• Kit: valves with thermometers, check valve, air vents, drain valves — fully ready for installation.

Underfloor Heating and Heat Pump

For a large house with 14 floor circuits, the heat pump is the most efficient heat source. Underfloor heating operates at a supply temperature of 30–45°C — this is the ideal mode for a heat pump with COP 4–5. The Termojet TJ-W-14 manifold ensures even distribution of low-temperature heat carrier across all 14 circuits, the heat pump maintains a stable operating mode without peak loads. More about solutions for large facilities — on the website of Termojet heat pumps.

Frequently Asked Questions

Will a 14-outlet manifold fit in a standard cabinet?
For the TJ-W-14 with a length of 780 mm, the manifold cabinet No. 05 (12–14 outlets, width 965 mm) is intended. If installation with a mixing unit is planned, choose a cabinet with increased depth or place the unit nearby.

How to calculate the number of outlets for a house?
One outlet — one floor circuit. Recommended circuit length is 60–100 m with 16×2 pipe and a laying pitch of 150 mm. Find the total area with underfloor heating, divide it into sections of 6–10 m² per loop — you will get the required number of outlets.