install the plastic vent assembly
important note: the vent pipe must be installed vertically
with the air-gap at the top and strictly in accordance with
the instructions. the vent pipe conforms to the building
regulations and on no account should be shortened or
modified in any way.
to avoid debris blocking the vent and causing it to
overflow do not, under any circumstances, install the
saddle clamp on the U Bend, waste trap, side/underside of
the waste pipe.
if the omni system is being installed on a sink with a
waste disposal unit, the omni vent assembly must be
installed on a separate waste pipe to the waste disposal
unit.
Choose a convenient position to fit the saddle clamp (16) on
a vertical section (Option 1) of the waste pipe, or alternatively
on a horizontal section (Option 2). When installing the saddle
clamp horizontally the elbow (18) is not required. Be careful to
allow sufficient clearance for the height of the vent assembly and
enough room to operate the pipe cutter (19).
1. Separate the two halves of the saddle clamp by unscrewing and
removing the four nuts and bolts. Discard the two black rubber
inserts for 41mm waste pipe. Leave them in place for 32mm
pipe.
2. Place the saddle clamp in position on the chosen section of
waste pipe and re-assemble the clamp. Tighten the nuts and
bolts securely to make a watertight seal.
3. Insert the pipe cutter (19) into the saddle clamp and cut a
hole in the waste pipe by rotating it to the right until it breaks
through. (see diagram).
4. Screw the vent assembly (15) into the saddle clamp. When the
saddle clamp is installed on a vertical section of the waste pipe
screw the elbow in first and use the lock nut to secure the air
gap assembly in the vertical position.
5. Take the vent hose (17) (black indicator) and connect the
G1/2” nut end onto the corresponding G1/2” male thread at
the top of the vent assembly. Use the attached NutRunna
®
(11)
to tighten the nut firmly, sufficient to make a watertight seal. Do
not overtighten.
Option 1
Option 2
365m
m
Lock Nut
Lock Nut
365mm
Option 1
Option 2
365m
m
Lock Nut
Lock Nut
365mm
Option 1
Option 2
365m
m
Lock Nut
Lock Nut
365mm
