Pump group Termojet with actuator-controller A-413 1 1/4" FT in thermal insulation without pump PG-52A.150

Pump group NG-52A.150 with drive-controller A-413 — a Termojet unit of enlarged size 1¼″ BSP with a mixing assembly that automatically maintains the set fluid temperature without external boiler room automation. This is a self-sufficient solution for high-capacity regulated circuits: configure once — and the controller manages the valve on its own.

Operating principle: the built-in Termojet A-413 drive-controller (230 V power supply, 3-point ON/OFF control) rotates the mixing valve and blends cooled return water into the supply, maintaining the set circuit temperature. Drive torque — 6 Nm, rotation time for 90° — 120 seconds, protection class IP42, CE and RoHS certificates. The group has right-hand connection and is supplied with an XPE thermal insulation jacket that minimises heat losses at the assembly.

Applications: large underfloor heating circuits, radiator heating with supply temperature limiting, pipework for solid-fuel boilers and buffer tanks. Precise automatic mixing also makes the group appropriate for low-temperature systems with a heat pump — see Termojet heat pumps. For circuits of smaller size with the same control principle, there is the pump group NG-48A L with drive-controller.

Advantages of NG-52A.150 from Termojet:

• A-413 drive-controller included — automatic temperature control without a boiler room controller;
• enlarged size 1¼″ — low hydraulic resistance at high fluid flow rates;
• XPE thermal insulation and factory assembly — quick installation and minimal heat losses;
• Ukrainian production: competitive price, stock availability, manufacturer's warranty.

Technical specifications: connection — 1¼″ BSP, maximum flow rate 10.3 m³/h, maximum pressure 3 bar, height 471 mm, width 296 mm. Circulation pump installation length — 180 mm; pump not included — the energy-saving Termojet APE 25-60 pump (180 mm) is suitable.

Other sizes and mixer control options — in the Termojet pump groups catalogue.

The group is equipped with the Termojet A-413 drive-controller with an integrated temperature sensor — it automatically controls the three-way mixing valve according to the set programme, maintaining a stable supply temperature.

Frequently Asked Questions

Is separate boiler room automation required for the NG-52A?
No. The A-413 drive-controller is built into the group: it independently controls the mixing valve and maintains the set circuit temperature.

Which pump is suitable for this group?
A circulation pump with an installation length of 180 mm — for example, the energy-saving Termojet APE 25-60 (180 mm). The pump is not included in the delivery scope.