Amtrol, Tank Equipment, models:

FILL-TROL FT-109	Installation & Operation Instructions
HWBT Series	Installation & Operation Instructions
THERM-X-TROL ST-5C Series	Installation & Operation Instructions
TITAN TC-20	Instruction Manual
Therm-X-Trol ST-42V-C	Installation, Operation & Service Instructions
WELL-X-TROL WX-101	Installation & Operation Instructions