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Optima 45 - 3 20
VENTING - HORIZONTALLY USING SIMPSON DURA-VENT DIRECT VENT SYSTEMS
1. Set the Optima 45-3 in its desired location.
Determine if wall studs or roof rafters are in
the way the when venting system is at-
tached. You may want to adjust the location
of the unit to compensate.
2. Simpson Dura-Vent Venting System is de-
signed with special twist-lock connections to
connect to the appliance. An Archgard adap-
tor (SDA-U) is required. The adaptor will al-
low Simpson Dura-Vent System to be used.
3. Apply a bead of silicone inside the outer sec-
tion of the SDA-U adaptor (crimped side).
Slip the adaptor over the existing inner and
outer flue collar and fasten it to the outer col-
lar only with 3 screws (drill pilot holes first).
Level the appliance and fasten it to the fram-
ing using nails or screws through the nailing
strips.
4. Assemble the desired combination of pipe
and elbows to the appliance adaptor and
twist lock the pipe.
NOTE: Twist-lock procedure: Four indenta-
tions, located on the female ends of the pipes
and fittings, are designed to slide straight onto
the male ends of adjacent pipes and fittings by
orientating the four pipe indentations so they
match and slide in to the four entry slots on the
male ends (Fig. 2). Push the pipe sections
completely together, then twist-lock one sec-
tion clockwise approximately one quarter turn,
until the two sections are fully locked. The fe-
male locking lugs will not be visible from the
outside, on the pipe or fittings. They may be
located by examining the inside of the female
ends. Horizontal vent runs MUST be supported
every three feet (76 mm). Wall straps are avail-
able for this purpose.
INSTALLATION PROCEDURES FOR SIMPSON DURA-VENT DIRECT VENT SYSTEM
Female
Locking
Lugs
Sealant
Male
Locking
Lugs
Fig. 2
#1
#2
#3
#4
#5
#6
#7
#8
Fig. 1
#1 Vertical Termination
#2 Vinyl Siding Standoff
(Optional)
#3 Wall Thimble
#4 Round Support Box
#5 Adj. Length of pipe
#6 90
0
Elbow
#7 Pipe Length
#8 SDA-U Adaptor 3” (76mm)
Refer to Venting Chart on Page 16