bsi138Crown Boiler BSI138 User Manual. Download. Like. Full screen Standard. Page of 54 Go. 17. X Wiring. 1) 120 Volt Wiring - The boiler should be provided with its own 15A branch circuit withPage 1 These instructions must be affixed on or adjacent to the boiler Models: WARNING: Improper instal- lation, adjustment, alteration, BSI207 BSI069 • • service or maintenance