Armstrong 119381-113 Compass R40-45CI Circulator Pump

Description

Armstrong 119381-113 Compass R40-45CI adjusts circulation in modern hydronic systems where variable flow and system balancing matter. This 120 V single-phase ECM circulator uses adaptive power from 5 W to 45 W, allowing contractors to match pump output more closely to changing demand. Its cast-iron body suits compatible heating loops, while the 14.7 feet maximum head limits the type of system it can serve. Confirm the required flow, flange arrangement, and control settings before installation.

The inverter-driven ECM motor delivers up to 40 GPM through the Compass R40-45CI hydraulic assembly. A digital speed and mode LED display gives the installer a direct interface for setup, while integrated electronic overload protection helps protect the motor during abnormal operating conditions. The supplied data does not state connection size, seal material, dimensions, or weight, so verify the submittal, system curve, wiring, and available service clearance before startup.

Key Features & Benefits

• ECM Inverter-Driven Motor: Adjusts circulation for variable-flow hydronic systems and changing heating demand.
• 5 W to 45 W Adaptive Power: Helps limit unnecessary electrical use during lower-load operation.
• 40 GPM Maximum Flow: Supports larger residential and light commercial heating circuits within the stated rating.
• 14.7 Feet Maximum Head: Provides a clear selection reference for lower-resistance system layouts.
• Digital LED Interface: Gives technicians direct speed and mode feedback during pump setup.
• Electronic Overload Protection: Helps protect the motor during abnormal operating conditions.
• 120 V Single-Phase: Fits compatible US service panels without requiring three-phase power.
• Cast-Iron Body: Provides the specified casing material for compatible hydronic heating applications.

Why Choose Armstrong 119381-113 Compass R40-45CI

The Compass R40-45CI is aimed at hydronic systems that do not operate at one fixed flow condition. Its ECM motor, adaptive power range, and digital interface give installers more control than a basic fixed-speed circulator.

• Build: Cast iron, ECM motor technology, electronic overload protection, and LED controls provide defined construction and operating features.
• Value: Adaptive power and variable-speed operation can reduce unnecessary run power when system demand drops.
• Audience: Suited to hydronic contractors, radiant-heating installers, green-building retrofit teams, and facility maintenance technicians.

Applications & Use Cases

Use Armstrong 119381-113 Compass R40-45CI for modern hydronic balancing, variable-flow heating systems, radiant circuits, and compatible retrofit projects. The official Compass R40-45 information identifies a compact 6.5-inch flange-to-flange arrangement, but verify the exact listing configuration, connection pattern, overall dimensions, weight, and service clearance before ordering.

Warranty & Support

• Warranty Terms Require Confirmation: Verify duration, coverage, registration, exclusions, and authorized service requirements with Armstrong or the seller.
• Match SKU 119381-113, Compass R40-45CI, 120 V supply, and connection details against the existing nameplate.

Flush the loop, purge trapped air, verify the 120 V supply, and inspect the display and control response during commissioning. Confirm the operating point stays below the 14.7-foot head rating, then monitor noise, vibration, temperature, and fault indications. Purchase the Armstrong 119381-113 Compass R40-45CI ECM hydronic circulator through Mulmotor.com for authentic equipment, applicable warranty support, and pump assistance.