ACORN ENGINEERING FIELD SERVICETOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX 626-855-4863INSTALLATION, OPERATIONS & MAINTENANCE MANUALPart #: 9927-141-001Please visit www.acorneng.comfor most current specifications.A C O R N E N G I N E E R I N G C O M P A N YP. O . B O X 3 5 2 7 • C I T Y O F I N D U S T R Y, C A 9 1 7 4 4 U . S . A .T O L L F R E E 8 0 0 - 4 8 8 - 8 9 9 9 : : L O C A L 6 2 6 - 3 3 6 - 4 5 6 1FA X 6 2 6 - 9 6 1 - 2 2 0 0 : : w w w. a c o r n e n g . c o mA C O R N E N G I N E E R I N G C O M P A N YP. O . B O X 3 5 2 7 • C I T Y O F I N D U S T R Y, C A 9 1 7 4 4 U . S . A .T O L L F R E E 8 0 0 - 4 8 8 - 8 9 9 9 : : L O C A L 6 2 6 - 3 3 6 - 4 5 6 1FA X 6 2 6 - 9 6 1 - 2 2 0 0 : : w w w. a c o r n e n g . c o mCleaning and Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Prior to Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2TABLE OF CONTENTSInstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16Piezo Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-19Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-21Components & Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-27Rough-Ins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 7Accessibility Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28REQUIRED ITEMS FOR INSTALLATION - NOT SUPPLIED®MERIDIANMODEL3791-RO®CORTERRAADA-COMPLIANTKURVE SINGLE BASINMODEL# 3791-RO-1-SO-DVRIGHT SIDE OFF-SETCONFIGURATION? Carpenters Level? 7/16" Hex Wrench? Chalk Line? 1/4” Slotted Tip Screwdriver For MeteringAdjustment? Hammer? 1/2" NPS Supply Angle Stops And 1/2" NPSSupply Flex Hose(s) ? Driver For 1/4” Shank Bit - For Center Reject Bit? Teflon Tape? Plumbers Putty? Fixture Wall Anchors and Anchoring Hardware(and Appropriate Tools) - For 3/8" Punching(13 Count)®MERIDIAN 3791-RODate: 03/07/19