Watts RD-300-F User Manual

RD-100-F / RD-300-F

INSTALLATION

Adj. Extension Flange

Installation Instructions

Installation Instructions RD-100-F / RD-300-F Roof Drains

1) Create an opening in the roof deck:

Flange (-F)

14" for RD-100 Series
18-1/2" for RD-300 Series.

2) Place "F" flange over the opening. The flange may be
fastened to the roof deck if desired.

3) Invert the roof drain body, and turn 8" all-thread rod
into bottom lugs.

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.

5) Turn drain upright and lower onto "F" flange, aligning
all-thread rod with "F" flange holes.

Step 1,2

Step 3,4

Step 5

6) From underside of roof, align "D" underdeck clamp holes
with all-thread rod. Raise "D" underdeck clamp against
underside of roof deck, and secure with hex nuts and
washers.

Underdeck
Clamp (-D)

Step 7

Step 6

7) Install upper flashing clamp and dome as required to suit
finished roofing system.

IS-WD-RD-F 0335 EDP# 1916099 RD-100-F/RD-300-F-Installation