Watts RD-300 Instructions D'installation page 7

Step 2:
Place "F" flange over the opening . The flange may be fastened to the roof deck if
desired with screws. (Provided) Sealant may be used if desired to provide a mois-
ture barrier between the roof and drain.
"F" Deck Flange Installation Instructions
The use of a 10 ga. zinc plated steel flange helps to reduce the risk of a crooked or
off-set of the leader pipe. It enables the roof drain to be adjusted to insulation height
and is recessed in the center to accept the roof drain body and eliminate the pool-
ing of water in and around the drain. The flange eliminates the need for reinforce-
ment of the roof drain.
Step 3:
Invert the roof drain body, and turn 8" all-thread rod into bottom lugs.
Step 3 & 4
Step 3,4
Step 4:
Thread hex nuts on to all-thread rod. Set nuts to desired height for suspension of
drain above roof deck, flush with roofing insulation. Drop flat washers over studs.
Note: If drain is to be set flush with roof deck (tapered insulation) do not use hex
nuts and washers - drain body will fully recess into "F" flange for flush-with deck
installation.
Step 5:
Turn drain upright and lower onto "F" flange, aligning all-thread rod with "F" flange
holes.
7