Quick Start Manual

26
FIGURE 20
STANDARD VERTICAL DIRECT VENTING
U
PFLOW MODEL SHOWN (TYPICAL FOR DOWNFLOW MODELS)
FIGURE 21
STANDARD HORIZONTAL DIRECT VENTING
UPFLOW MODEL SHOWN (TYPICAL FOR DOWNFLOW MODELS)
I
407
3" MAX.
SEPARATION
COMBUSTION AIR
PIPE
12" MIN.
SEPARATION
12" MIN. ABOVE
ROOF LEVEL
ROOF LINE
E
XHAUST PIPE
C
OMBUSTION AIR PIPE
SUPPLY AIR
RETURN AIR
EXHAUST VENT
3"
MAX.
EXHAUST
VENT
ROOF LINE
COMBUSTION
AIR PIPE
12"
MIN.
12" MIN.
A
NTICIPATED
SNOW LEVEL
COMBUSTION
AIR PIPE
3"
MAX.
EXHAUST
VENT
12"
MIN.
12" MIN.
3
"
M
A
X.
12
"
M
I
N
.
1
2
"
M
I
N
.
A
B
O
V
E
A
N
T
I
C
I
PA
T
E
D
S
N
O
W LE
VE
L
N
OTES:
1
T
HE COMBUSTION AIR PIPE MUST
TERMINATE IN THE SAME PRESSURE
ZONE AS THE EXHAUST PIPE.
2
INCREASE THE 12-IN. MINIMUM
TO KEEP TERMINAL OPENING
A
BOVE ANTICIPATED LEVEL OF
SNOW ACCUMULATION WHERE
A
PPLICABLE.
3
W
HEN 3-IN. DIAM. PIPE IS USED,
REDUCE TO 2-IN. DIAMETER BEFORE
PENETRATING ROOF. A MAXIMUM OF
1
8 IN. OF 2-IN. PIPE MAY BE USED
BEFORE PASSING THROUGH ROOF.
4
SUPPORT VERTICAL PIPE EVERY 6
FEET.
5
EXHAUST TERMINATION - TERMINATE
THE LAST 12 INCHES WITH 2” PVC PIPE
O
N 45,000 AND 105,000 BTUH MODELS.
6
3
0” MAXIMUM EXPOSED VENT
LENGTH.
PITCHED ROOF INSTALLATIONS
NOTES:
1
SUPPORT HORIZONTAL PIPE
EVERY FOUR FEET.
2
WHEN 3 IN. PIPE IS USED REDUCE TO 2 IN.
BEFORE PENETRATING OUTSIDE WALL.
3
18 IN. MAXIMUM. 2 IN. DIAMETER PIPE MAY
BE USED INSIDE THE WALL.
4
DETAIL “A” - EXHAUST TERMINATION
TERMINATE THE LAST 12 INCHES WITH 2”
PVC PIPE ON 45,000 AND 105,000 BTUH
MODELS.
5
INCREASE THE 12 IN. MINIMUM ABOVE
GRADE TO KEEP TERMINAL OPENINGS
ABOVE ANTICIPATED LEVEL OF SNOW
ACCUMULATION WHERE APPLICABLE.
6
DETAIL “B”, INSTALL WIND DEFLECTOR
VANE IN 2 IN. PVC COUPLING IN VERTICLE
POSITION USING PVC SOLVENT.
THE COMBUSTION AIR TERMINATION
MUST BE IN THE SAME PRESSURE ZONE
AS THE EXHAUST TERMINATION.
3”
12”
4”
4”
SEE DETAIL A
VANE
2” PVC
COUPLING
12” MIN. ABOVE
GRADE LEVEL
5
SEE DETAIL B
2” OR 3” TEE
W/DRAIN TRAP
RETURN AIR
TRAP
SUPPLY AIR
EXHAUST PIPE
COMBUSTION AIR PIPE
CONNECT
TO DRAIN
4”
EXHAUST
INTAKE
OPTIONAL
INTAKE
DETAIL C
EXHAUST / INTAKE RELATIONSHIP
COMBUSTION AIR TERMINATION
DETAIL B
1
2
3
I407
4
5
5
5
6
1
2
3
30ⴖ MAX
30ⴖ MAX