Sterling SF - Manual (Page 5)

5
INSTALLATION
HORIZONTAL TERMINATION, 5 INCH KIT
FOR USE WITH 100-250 MBH UNITS ONLY
Select a location on outside wall for vent terminal.
In most applications, the terminal should be on level
with the fl ue outlet of the unit, less a 1/4 inch per foot
(21mm/m) pitch for condensate drainage toward the
outside of the building. See Table 1 and Figures 3 and 4.
Cut hole through wall for 8 inch (203mm) combustion
air pipe. Install thimble if required by local codes or
type of wall construction.
Combustion air inlet box may be fastened directly to
wall or spaced away from wall using suitable brackets
(fi eld supplied). Cut length of 8 inch UL 1738 listed pipe
so that it will protrude 4 inches (102mm) through the
wall when the box is mounted in position. Fasten pipe
to box with sheet metal screws, using at least 3 screws
per joint. Seal joint with high temperature silicone
sealant.
Never use pipe other than 5 inch
diameter. Never use PVC, ABS or any other non-
metallic pipe for venting! To do so may result in
serious damage to the unit and or severe personal
injury or death!
Insert pipe through wall and fasten adaptor box in place
so that the pipe pitches downward 1/4 inch per foot
(21mm/m) toward the outside. Flash and/or caulk
8 inch pipe on outside wall. Install inlet air screen
assembly and fasten to 8 inch pipe with screws. Insert
a continuous length of 5 inch UL 1738 listed vent pipe
through the 5-3/4 inch opening with the “UP” arrow
pointing toward the outside. Position the pipe to extend
a minimum of 12 inches (305mm) beyond the inlet air
screen. Seal the space between the UL 1738 listed
vent pipe and 5-3/4 inch opening of the combustion air
inlet box using high temperature silicone sealant. Install
defl ector disk on UL 1738 listed vent pipe 2-1/2 inches
(63.5mm) from inlet air screen and fasten with screws.
Install vent terminal on end of UL 1738 listed vent pipe,
fasten with screws and seal joint (see Figure 4).
Connect fl ue pipe and combustion air pipe from
combustion air inlet box to unit following Combustion
Air and Exhaust Venting instructions on pages 7 and
8. Joint between UL 1738 listed vent pipe and single
wall vent pipe must be sealed with high temperature
silicone sealant (see Figure 4).
Collars on unit and on combustion air inlet box are
sized so that crimped ends of combustion air pipes go
toward the unit and crimped ends of fl ue pipes go away
from the unit.
HORIZONTAL TERMINATION, 6 INCH KIT
FOR USE WITH 300-400 MBH UNITS ONLY
Select a location on outside wall for vent terminal. In
most applications, the terminal should be on level
with the fl ue outlet of the unit, less a 1/4 inch per foot
(21mm/m) pitch for condensate drainage toward the
outside of the building. See Table 1 and Figures 3 and 4.
Cut hole through wall for 10 inch (254mm) combustion
air pipe. Install thimble if required by local codes or type
of wall construction.
Combustion air inlet box may be fastened directly to
wall or spaced away from wall using suitable brackets
(fi eld supplied). Cut length of 10 inch UL 1738 listed
pipe so that it will protrude 4 inches (102mm) through
the wall when the box is mounted in position. Fasten
pipe to box with sheet metal screws, using at least 3
screws per joint. Seal joint with high temperature
silicone sealant.
Never use pipe other than 6 inch
diameter. Never use PVC, ABS or any other non-
metallic pipe for venting! To do so may result in
serious damage to the unit and or severe personal
injury or death!
Insert pipe through wall and fasten adaptor box in
place so that the pipe pitches downward 1/4 inch per foot
(21mm/m) toward the outside. Flash and/or caulk 10 inch
pipe on outside wall. Install inlet air screen assembly and
fasten to 10 inch pipe with screws. Insert a continuous
length of 6 inch UL 1738 listed vent pipe through the
6-3/4 inch opening with the “UP” arrow pointing toward
the outside. Position the pipe to extend a minimum of 12
inches (305mm) beyond the inlet air screen. Seal the
space between the UL 1738 listed vent pipe and 6-3/4
inch opening of the combustion air inlet box using h igh
temperature silicone sealant. Install defl ector disk on UL
1738 listed vent pipe 2-1/2 inches (63.5mm) from inlet
air screen and fasten with screws.
Install vent terminal on end of UL 1738 listed vent pipe,
fasten with screws and seal joint (see Figure 4).
Connect fl ue pipe and combustion air pipe from
combustion air inlet box to unit following Combustion
Air and Exhaust Venting instructions on pages 7 and 8.
Joint between UL 1738 listed vent pipe and single wall
vent pipe must be sealed with high temperature silicone
sealant (see Figure 4).
Collars on unit and on combustion air inlet box are
sized so that crimped ends of combustion air pipes go
toward the unit and crimped ends of fl ue pipes go away
from the unit.