Circulator pump Termojet AUTO energy-saving APM-F 40/15-250 mm

Termojet AUTO APM-F 40/15-250 mm circulating pump — a flanged energy-saving pump with an ECM permanent-magnet motor and water cooling for heating and cooling systems in commercial and industrial facilities. Flange connection DN40, installation length 250 mm, power consumption 25–670 W, maximum head 15 m, flow rate up to 24 m³/h, heat-carrier temperature 0°C to +110°C, protection class IP44.

Technical specifications

AUTO operating modes

Constant differential pressure (Δp-c). The pump maintains a set pressure difference between supply and return regardless of variable system load. Δp-c mode is optimal for boiler rooms and systems with a large number of consumers with automatic flow regulators.

Proportional differential pressure (Δp-v). Differential pressure decreases proportionally to flow. As load decreases, the pump automatically reduces speed — lower consumption, less noise, longer service life. Recommended for systems with manifolds and zone control.

Applications

• Boiler room of a private house or small commercial facility: main heating system pump with DN40 flange connection.
• Heating systems for offices, warehouses, and small industrial premises.
• Cooling systems (chiller–fan coil): temperature range 0–110°C covers most refrigerants.
• Solar thermal systems: resistance to temperatures up to +110°C.
• Termojet Mega series — catalogue: flanged pumps for large facilities.
• Termojet pump groups — catalogue: selection of connection assemblies.
• Commercial-grade heat pump system: Termojet heat pumps.

Why an ECM motor is more cost-effective

Flanged pumps with unregulated motors consume constant power at the selected speed regardless of the actual system load. The ECM motor of the APM-F 40/15 consumes from 25 W in minimum mode to 670 W at peak loads. Electrophoretic coating of the housing protects against corrosion; EPDM seals require no replacement. The built-in water cooling of the motor ensures quiet operation (up to 50 dB) and long service life without external maintenance.

APM-F 40/15 and heat pump systems

For commercial facilities with a heat pump and DN40 heating system, the APM-F 40/15 is the optimal choice: a flow rate of 24 m³/h covers most industrial heat pumps, and Δp-v mode synchronises with the variable load of the unit. See commercial solutions at tjheatpump.com.ua.

Frequently asked questions

What is the difference between APM-F 40/12 and APM-F 40/15?
The APM-F 40/15 has a higher maximum head — 15 m versus 12 m for the APM-F 40/12. The flow rate is the same: up to 24 m³/h. The APM-F 40/15 is suitable for systems with greater hydraulic resistance — longer pipelines, a greater number of control assemblies.

Is the APM-F 40/15 suitable for systems with antifreeze?
Yes, provided that the antifreeze is chemically neutral, free of solid particles and mineral oils, and similar in properties to water. Verify the compatibility of the specific antifreeze type before installation.