Rinnai / Grundfos GTK03U — Circ-Logic™ External Pump Kit (115 V) w/ Union Connections Size_3/4" 1/50 HP high-efficiency motor

1/50 HP high-efficiency motor

Residential and light-commercial gas equipment installations

Site conditions affect radio performance

Inductive rating: 40 A at 120–480 VAC

Rinnai / Grundfos GTK03U — Circ-Logic™ External Pump Kit (115 V) w/ Union Connections Size_3/4" 1/50 HP high-efficiency motorRinnai Grundfos GTK03U Circ Logic External Recirculation Pump Kit Brand: Rinnai Grundfos SKU: GTK03U Product Overview The Rinnai Grundfos GTK03U is an external recirculation pump kit for compatible Rinnai tankless water heaters that support Circ Logic control. It adds a Grundfos circulator with an internal check valve to an approved recirculation layout, allowing the heater's Circ Logic settings to control scheduled or demand based circulation