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Stainless steel circulating pump with flanged connections

Taco Inc

Taco Inc 2400-20S Learning Thermostat

SKU CH-3J4F-KA2V3

A learning thermostat controlling hydronic circulation with 115 V direct-drive pump reaching 32 GPM at 7 ft head and 49 ft shut-off

  • TypeLearning Thermostats
  • Learns heating patterns for efficient comfort
  • 1/6 HP motor delivers 32 GPM at 7 ft head
  • Stainless steel housing resists corrosion in potable water
  • Direct drive design reduces maintenance needs
  • 115 V single-phase power suits standard circuits

Taco 2400-20S learning thermostat

The Taco 2400-20S is a learning thermostat designed for potable water circulating systems. It operates on 115VAC single-phase power with a direct-drive 1/6 HP motor. The stainless steel housing supports flange connections from 3/4 inch to 1-1/2 inch. This unit suits hydronic heating or domestic hot water recirculation loops.

Verify voltage phase and flange sizing

Confirm the installation site provides 115VAC single-phase supply before ordering. The pump requires flange connections matching 3/4 inch to 1-1/2 inch pipe sizes; flanges are not included. Check that the 6-7/8 inch length and 4-1/2 inch width fit the available space. Ensure the open-loop configuration matches the system design.

Suits residential recirculation not high-head demand

This pump fits installers needing a learning thermostat for standard potable water recirculation with moderate flow. It delivers 24 gpm at 33 ft best efficiency and 32 gpm at 7 ft maximum flow. Buyers requiring shut-off head beyond 49 ft or flow above 32 gpm should look elsewhere. Systems needing integrated flanges or closed-loop optimisation are not a match.

Highlights

  • Learns heating patterns for efficient comfort
  • 1/6 HP motor delivers 32 GPM at 7 ft head
  • Stainless steel housing resists corrosion in potable water
  • Direct drive design reduces maintenance needs
  • 115 V single-phase power suits standard circuits

Specifications

BrandTACO
TypeLearning Thermostats

Questions about this item

What pipe sizes does the 2400-20S flange accommodate and are gaskets included?

The flange accepts 3/4 in., 1 in., 1-1/4 in. and 1-1/2 in. connections. The listing states no flange or union is included, so gaskets and hardware must be sourced separately.

How do the 32 gpm at 7 ft and 24 gpm at 33 ft ratings differ in practice?

The 32 gpm figure is the maximum flow at low head, while 24 gpm at 33 ft marks the best-efficiency point; the pump will run most quietly and economically near the latter.

What does the 49 ft shut-off head mean for a domestic recirculation loop?

It indicates the pump can overcome up to 49 ft of total head pressure, so it will maintain flow in typical residential loops with moderate pipe runs and fittings.

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