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Details the manual's sections and appendix, covering kit contents, installation for SENSEI and non-SENSEI models, operation, and system drawings.
States the document is a guide, not a replacement for professional engineering, and stresses compliance with local codes.
Lists the components included in the Grundfos GTK03U Kit for Rinnai Circ-Logic installation.
Specifies the equivalent pipe length for the Grundfos GTK03U using 3/4 in. piping at 120°F.
Outlines general installation requirements, necessary skills for licensed professionals, and pump operating limits.
Provides step-by-step instructions and a wiring diagram for connecting the GTK03U pump to SENSEI™ tankless water heaters.
Explains how to adjust parameter settings on the water heater controller for recirculation modes (Economy/Comfort).
Details the wiring process for installing the GTK03U pump on non-SENSEI™ models, including rerouting power cords.
Explains how the pump operates based on Rinnai temperature settings and modes, including typical ON intervals.
Provides guidance on troubleshooting pump operation issues, including manual shaft rotation and system pressure equalization.
Illustrates the system configuration for recirculating hot water with one tankless heater for SENSEI™ and non-SENSEI™ models.
Presents a system drawing for recirculating hot water with two tankless water heaters for SENSEI™ models.
Shows the system layout for recirculating hot water with two tankless water heaters for non-SENSEI™ models.
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