John Wood Oil-Fired Direct Vent - Manual (Page 3)

LOCATION: (See Figure 2)
Locate the water heater as close as possible to an
exterior wall to minimize the length of flex duct required.
However, the minimum length available is 5 feet and under no circumstances must any component be
altered. Consider the direction of predominant winds
and the possible snow accumulation against that side of
the building.
NOTE 1
APPL
Y
CAULKING ON
OUTSIDE
VENT
TERMINA
TION
DEVICE
SCREEN
12
ANTICIP
A
TED MAX.
SNOW LINE
GRADE LEVEL
5 - 1/8
INSULA
TION
BLOCKING
NO INSULA
TION
IN THIS
SP
ACE
BLOCKING
3’
MAX.
MAX. DIST
ANCE
BETWEEN SUPPOR
TS
3’
ON LONGER RUNS
DO NOT
AL
TER
ANY
VENT
COMPONENTS.
TRANSITION PIECE W
A
TER HEA
TER
T
O
FLEX DUCT
(P
AR
T
OF FLEX DUCT)
SEE DET
AIL
FIG
.5
JWF307V W
A
TER HEA
TER
NOTE 1. IF
THE EXTERIOR F
ACE IS
ALUMINUM
OR VINYL
SIDING OR
ANY
OTHER
SIDING WHICH MA
Y
BE DISCOLOURED
OR
AFFECTED BY
FLUE GASES,
A
MET
AL
SHIELD OF
A
T
LEAST
30” X 30”,
MUST
BE PROVIDED
T
O
COVER
THIS
W
ALL
SECTION.
Page 2
Figure 2