12-99
11
30750B
R-CAST SERIES WALL FURNACE
2. Assembling the Venting Sections
. Use only
vent supplied and listed for use with this heater. To
attach a straight section to the top of the heater,
female end down, slide pipe over the outer collar on
the heater while the inner flue will slip over the flue
inner.
MAINTAIN MINIMUM CLEARANCES OR
GREATER AROUND THE VENT SYSTEM.
Do not
pack air spaces with insulation or other material.
1. Preparing the Wall for Horizontal Termination.
When using the SLD-Series system, a hole measur-
ing 10” wide and 10” high must be cut and framed in
the exterior wall where venting will be terminated.
The height of the hole must be located to meet all
local and national codes and not be easily blocked or
obstructed. The minimum height to the center of the
horizontal vent is 57
1
/
2
'' from the base of the unit.
This figure will increase by the length of each verti-
cally positioned vent section added to the venting
system. See Figure 4.
Figure 4
Exterior Wall Hole
The horizontal run of vent must have 1/4” of rise per
2’ of run and be perpendicular to the wall.
If the wall being penetrated is constructed of non-
combustible material, i.e., masonry block or concrete,
a 7” diameter hole is acceptable.
The SLD-Series Direct Vent Pipe is unitized and
twist-locks together. For the twist-lock procedure,
consult Figure 5 and do the following:
a. Four [4] indentations, located on the female ends
of pipes and fittings, are designed to slide straight
onto the male ends of adjacent pipes and fittings. By
orienting the four [4] pipe indentations so they match
and slide into the four [4] entry slots on the male
ends. See Figure 5. Push the pipe sections com-
pletely together, then twist-lock one section clock-
wise approximately one-quarter turn, until the two
sections are fully locked. The female locking lugs will
not be visible from the outside, on the Black Pipe or
fittings. They may be located by examining the
inside of the female ends.
b.
Horizontal runs of vent must be supported every
three feet. Wall Straps are available for this purpose.
Before connecting the horizontal run of vent pipe to
the vent termination, slide the black decorative wall
thimble cover over the vent pipe.
When using the adjustable section, maintain a 1”
overlap on pipe sections and secure. It is also impor-
tant that the vent pipe extends a minimum of 1
1
⁄
2
" into
the vent cap.
3. Termination Cap.
Position the horizontal vent
termination so that 1
1
⁄
2
" clearance is maintained on
top of the vent sections and 1
1
⁄
2
" on sides.
Before attaching the Vent Termination to the exterior
wall, run a bead of non-hardening mastic around the
outside edges to make a seal between the Cap and
the wall.
Attach the Cap to the exterior wall with eight [8] wood
screws, making sure that the arrow on the Cap is
pointing upward. After the Cap is attached, make
sure that a 1
1
⁄
2
" clearance is maintained from the top
of the vent to combustibles.
Figure 5
Twist-lock Procedure
