Armstrong Fluid Technology 810120-003 Coupler 321894-706 This dual-rated component operates at

This dual-rated component operates at 208/240V

it can often be used in place of single-stage units if the wiring schematic allows for the additional timing delays

Standard diagnostic steps include checking for a 24V signal between the 'Sec' and 'Com' terminals

It operates on a specific 10 to 11

most G2066 pads feature a colored mark on one edge

Armstrong Fluid Technology 810120-003 Coupler 321894-706 This dual-rated component operates atThe Armstrong Fluid Technology 810120 003 Coupler is a precision engineered OEM replacement part designed for high performance hydronic systems. Specifically manufactured for Armstrong H 51 and H 52 circulator pumps, this four spring type coupler facilitates efficient power transfer between the motor and the bearing assembly. Featuring a 1 2 inch x 1 2 inch shaft size and a robust cast iron construction, it is built to withstand the rigorous demands