Vulcan-Hart GRS25 Service Manual page 60

33. With a pipe wrench remove the remove the drain valve and drain pipe assembly from the tank. (Fig 95)
34. With a 3/8" socket remove (4) screws securing the flue box to the tank assembly. (Fig. 96)
35. Reverse steps 16-34 to install parts removed from the tank onto the new tank.
36. Reverse steps 1-15 to install the tank assembly.
Fig. 95
Fig. 96
60