Taco RMB-1 Radiant Mixing Block with Variable Speed Injection Control

The Taco RMB-1 Radiant Mixing Block is an all-in-one injection mixing system designed specifically for radiant heating applications. This complete system combines a variable speed injection mixing control, injection circulator, system circulator, and air elimination device into a single, compact unit, simplifying installation and eliminating the need for complex piping configurations.

Key Features:

• Variable speed injection circulator and system circulator with dual 1/40 HP and 1/25 HP motors
• Integrated Taco Hy-Vent air elimination system
• Three control modes: outdoor reset control, setpoint control, or delta-T limiting control
• Large LCD display for easy temperature monitoring and system setup
• Solid-state microprocessor control with plug-in, low-voltage connections
• Replaceable cartridge design for simplified maintenance
• Bronze casing suitable for both open and closed hydronic systems
• Maintenance-free wet-rotor circulators

Technical Specifications:

• Flow range: 0-15.5 GPM
• Head range: 0-15 feet
• Connection size: 3/4" NPT
• Voltage: 115V/60Hz/1-phase
• Maximum fluid temperature: 185°F (85°C)
• Minimum fluid temperature: 32°F (0°C)
• Maximum working pressure: 125 PSI
• Dimensions: 6.5" diameter x 14" height
• Heating capacity: Up to 120,000 BTU

Installation is straightforward, requiring only four pipe connections with no need for special piping, balancing valves, closely spaced tees, external controls, or complex wiring. The RMB-1 includes outdoor and two strap-on temperature sensors, and features automatic pump exercise, adjustable reset ratio, warm weather shutdown, and boiler protection functionality.