When set to the AUTO position

Unlike standard wall-mount variants

but always verify local mechanical codes

the oil must be replaced with 160 ABM alkylbenzene oil

Conbraco 10068005 Fitting 322027-701 When set to the AUTOThe Conbraco 10068005 is a heavy duty 3" x 1 2" copper reducer fitting designed for high flow commercial and industrial plumbing and HVACR systems. Engineered for sweat to sweat (C x C) connections, this fitting facilitates a significant diameter reduction while maintaining structural integrity under high pressure and temperature variances. Manufactured from high grade wrought copper, the 10068005 ensures optimal thermal conductivity and corrosion