Reznor Separated Combustion Systems Vertical ... - Agencespl.com

®
Reznor Separated Combustion Systems
Applies to Separated Combustion Model SDH
The manufacturer of Reznor heating equipment, for years, has pioneered in separated combustion system technology, eliminating “open
flame” combustion problems. This has resulted in a complete line of Reznor products using the separated combustion principle-
• air for combustion is mechanically induced from outside the building, preventing dirt, lint, dust or other contaminants in the indoor
atmosphere from entering the burner, pilot or combustion zone of the furnace,
• the air flow is metered to provide optimum and efficient combustion that is unaffected by negative building pressure or wind,
• after combustion, the air is exhausted back to the outdoor atmosphere.
Reznor separated combustion products provide all of the benefits while requiring only one building penetration. See the venting illustration
on the following pages.
Approved vent terminals are illustrated. No other venting arrangements are approved or certified for use with Model SDH heaters. Either
the horizontal vent/combustion air terminal kit (Option CC6) or the vertical vent/combustion air terminal kit (Option CC2) is required. Refer to
Venting Installation Manual Form I-SDH-V or contact your Reznor Representative at 800-695-1901 for more detailed information.
Separated Combustion Unit
- Showing typical installation of
a single horizontal vent terminal
and concentric adapter.
When Option CC6 is ordered,
one horizontal vent terminal/
combustion air inlet assembly
is provided for EACH furnace
section.
Separated Combustion Unit -
Typical installation of one vertical
vent terminal and concentric
adapter. If vertical vent (Option
CC2) is selected, a vertical vent
terminal/combustion-air inlet assembly
is provided for EACH
furnace section.
Vertical Vent Terminal/Combustion Air Inlet Assembly
(Option CC2)
Vent (flue
exhaust) Terminal
9-3/8” (238mm)
Double-Wall
Vent Pipe
Seal with silicone
sealant supplied
with the kit.
Combustion
Air Inlets
Wall or
Adjoining
Building
Sizes 75-225
4 ft (1.2M) Minimum
Sizes 250-400A
6 ft (1.8M) Minimum
12” (305mm) Minimum
Cold Climate NOTE: In
geographic areas where the
design ambient is -10°F
(-23°C)or lower, minimum
height is 24”(610mm).
11” (279mm)
Flashing
(field-supplied)
Shaded area respresents
required continuous (no
joints) section of doublewall
vent pipe. Section of
pipe may extend higher.
Flashing
(field-supplied)
*18”
(457mm)
Minimum
4 ft (1.2M)
Maximum
Roof
Roof
Combustion
Air Pipe
Concentric
Adapter
Box
Double-Wall Vent Pipe
Attach to vent run no
more than 6” (152mm)
from the box.
2” (51mm) if roof is combustible
Attach box to roof with brackets.
*Inlet air cap must be at
least 6” (152mm) higher
than anticipated snow depth.
(Top of Box)
Concentric
Adapter Box
Page 36
REAR VIEW
SIDE VIEW

Reznor Separated Combustion Systems (cont’d)
®
Horizontal Vent Terminal/Combustion Air Inlet Assembly
(Option CC6)
Approved vent terminals are illustrated below. No other venting
arrangements are approved or certified for use with Reznor separated
combustion heaters.
Both the horizontal and vertical assemblies include: concentric
adapter, screened exhaust or cap, inlet ring or inlet cap, rubber gasket
ring and a tube of high temperature silicone rubber sealant; all shipped
separately.
One-piece
“Terminal End”
Vent Pipe
Inlet Air
Guard
Minimum
4” (102mm)
Maximum
16” (406mm)
TOP VIEW
2” (51mm) if wall is combustible
Attach box to wall with brackets.
Combustion Air to Heater (seal joints)
Exhaust
Grill
Minimum
3” (76mm)
Maximum
6” (152mm)
Wall
1” (25mm)
Minimum
48” (1219mm)
Maximum
6”
(152
mm)
Concentric
Adapter
Box Width
Vent (Flue Exhaust) Pipe
from heater (seal joints)
Attach one-piece “terminal end” pipe to vent
run no more than 6” (152mm) from the box.
Distance between the
Concentric Adapter Box
and the Heater
For Maximum Length, see TABLE 1 on page 2.
Minimum length is 3 ft (.9M).
Heater
SIDE VIEW
Building Overhang - Maximum 24” (610mm)
Y
Minimum
Wall
Adjoining Building
X - Minimum*
One-piece
“Terminal End”
Vent Pipe -
Pitch to
Drain
3 ft (1M)
Minimum
Thimble
Combustion Air Pipe
- Pitch to Drain
Secure Concentric Adapter
Box to wall with brackets.
Adjust so that the box has a
slight downward slope to the
outside.
Rain water should drain out
and not roll into the pipes.
Building Projection
Page 37