Circulator pump Termojet AUTO energy-saving APM-F 65/15-340 mm

Termojet AUTO APM-F 65/15-340 mm circulator pump — a large flanged energy-saving pump with an ECM permanent-magnet motor for industrial and large commercial heating and cooling systems. Flange connection DN65, installation length 340 mm, power consumption 35–1650 W, maximum head 15 m, flow rate up to 45 m³/h, fluid temperature 0°C to +110°C, protection class IP44.

Technical Specifications

AUTO Operating Modes

Constant differential pressure (Δp-c). The pump maintains a fixed pressure differential between supply and return regardless of the variable load of a large system. Δp-c mode is the standard for the main pump of an industrial boiler room, where load fluctuates with outdoor temperature and production schedule.

Proportional differential pressure (Δp-v). The differential pressure decreases proportionally to the flow rate. As load decreases the pump reduces speed: significant savings during day and night operation with varying consumption. Δp-v mode is particularly important for large facilities with a daily heat consumption profile.

Applications

• Industrial boiler room: main circulating pump in the heating system of a production or warehouse facility.
• Heat supply for a large office or shopping centre.
• Large cooling systems (industrial chillers).
• Process fluid heating systems up to +110°C.
• Termojet Mega series — catalogue: flanged pumps for facilities of various scales.
• Termojet pump groups — catalogue.
• Industrial heat pump systems: Termojet heat pumps.

Why an ECM Motor Is More Cost-Effective

For pumps of this class, the electricity savings from switching to ECM become significant in absolute kWh terms. A conventional unregulated DN65 pump consumes fixed power around the clock; the ECM motor of the APM-F 65/15 starts from 35 W and reaches the peak of 1650 W only at maximum flow. At partial loads (night-time, weekends) the difference on the meter is obvious. The electrophoretic housing coating protects against corrosion, EPDM seals last the full service life without replacement, and noise does not exceed 50 dB.

APM-F 65/15 and Heat Pump Systems

An industrial heat pump or HP cascade for a large facility requires a pump with a flow rate of 30–45 m³/h. The APM-F 65/15 delivers exactly that performance, and Δp-v mode synchronises with changes in HP output throughout the day. More about industrial solutions — tjheatpump.com.ua.

Frequently Asked Questions

Why choose the APM-F 65/15 over the APM-F 65/12?
The APM-F 65/15 has a higher maximum head — 15 m versus 12 m. If the hydraulic resistance of your system is within 10–12 m, the APM-F 65/12 is sufficient. If the system has long mains or a large number of control assemblies, choose the APM-F 65/15.

What power supply does the APM-F 65/15 require?
Single-phase: 230 V ± 10% / 50 Hz. Maximum current 6,8 A. For installation in a boiler room a separate 10–16 A circuit breaker is recommended.