Giant Factories, Water Heater, models:

ANSI Z21.10.3	Owner'S Manual
InnoFlue Centrotherm	Owner'S Manual Installation And Operating Instructions
OG32	Owner'S Manual
RESIDENTIAL DIRECT VENT GAS-FIRED WATER HEATERS	Owner'S Manual
RESIDENTIAL OIL-FIRED WATER HEATER	Owner'S Manual Installation And Operating Instructions
RESIDENTIAL POWER DIRECT VENT GAS-FIRED WATER HEATER	Owner'S Manual
UG40	Installation And Operating Instructions Manual
UG50-58	Installation And Operating Instructions Manual
UG50-59	Owner'S Manual Installation And Operating Instructions