Installing$the$water$heater:
Vertical$Vent$Installation
A'fire'stop'plate'should'be'installed'at'every'
penetration'of'a'floor'or'ceiling'if'the'vent'is'
not'running'in'a'fireErated'shaft.'Maintain'the'
required'air'space'clearance'to'combustible'
materials'and'building'insulation.
Once'the'vent'terminal'location'has'been'
determined,'make'a'hole'through'the'roof'and'
interior'ceiling'to'accommodate'the'vent'pipe.'
Complete'the'vent'pipe'installation'to'the'
water'heater’s'vent'connector'fitting'on'the'
water'heater'vent'collar'outlet.'Support
'vertical'or'horizontal'runs'as'previously'
mentioned.'If'required,'use'silicone'sealant''
at'the'point'the'vent'connector'joins'the''
water'heater.
Install'adequate'flashing'where'the'vent'
pipe'passes'through'the'roof.'Determine'the'
vent'terminal'height'and'install'the'vent'pipe'
accordingly.'Refer'to'the'diagram'above'for'
proper'vent'terminal'height.
The'vent'roof'system'must'terminate'at'least'
1'foot'(30'cm)'above'the'roof'line'and'at'least'
2'feet'(61'cm)'higher'than'any'portion'of'the'
building'within'10'feet'(3'm).
Install'supports'every'5'feet'(1.5'm)'vertically'
along'the'vent'pipe'route.'Vertical'supports'
are'required'after'every'transition'to'vertical'
and'are'required'after'every'offset'elbow.'
When'the'vent'is'freeEstanding'and'penetrates'
a'roof/ceiling,'another'means'of'support'must'
be'used'at'a'second'location.
Follow'the'vent'manufacturer’s'recommended'
installation'instructions'provided'with'the'
vent'purchased'from'the'manufacturer.
Chase Requires
0" (0 cm) Clearance
to Combustibles
Firestop
Firestop/Support Plate
Adjustable
Roof
Flashing
Concentric
Vent Pipe has
0” Clearance
Requirment
Storm
Collar
Support
Clamp
1/4" per foot upward
slope on horizontal run
Vertical
Termination
Air Intake
3“/ 5” Concentric Pipe
Condensate
Drain Line
Form a Trap
in the drain
line.
To Drain: Dispose
of condensate in
accordance to
local codes
Support
Hanger
Vertical Vent Installation
with Horizontal offset
Straight Vertical
Vent Installation
12” (min)
(30 cm)
Standard$Vertical$Vent$Termination
Vertical$Vent$Termination$Location
The'location'of'the'vent'terminal'depends'on'the'following'
minimum'clearances'and'considerations'(see'diagram'at'left):
''Minimum'twelve'(12)'inches'
(30'cm)
'above'roof.
2
''Minimum'twelve'(12)'inches'
(30'cm)
'above'anticipated'
snow'level.
''Maximum'twentyEfour'(24)'inches'
(60'cm)
'above'roof'level'
without'additional'support'for'vent.
''Four'(4)'feet'
(1.2'm)'
from'any'gable,'dormer'or'other'
roof'structure'with'building'interior'access'(i.e.,'vent,'
window,'etc.).
''Ten'(10)'feet'
(3'm)
'from'any'forced'air'inlet'to'the'building.''
Any'fresh'or'makeEup'air'inlet'such'as'a'dryer'or' furnace'
area'is'considered'to'be'a'forced'air'inlet.
3
2
'For'installations'in'Canada'18"'(45.7'cm).
3
'For'installations'in'Canada'6''(1.8'm).
Notice:$Only$Rheem$
approved$termination$$
and$parts$should$be$used$
during$installation.
Notice:$Follow$vent$
manufacturer’s$installation$
instructions$and$their$
required$clearances$to$
combustibles$as$required.
14
Min.'12"'
(30'cm)'
Above'Roof'
1
Min.'12"'
(30'cm)'
Above'Anticipated'Snow'Level.
Max.'24"'
(60'cm)'
Above'Roof'(Without'Additional'Support)
1
'Min.'18"'(46'cm)'Above'Roof'for'installations'in'Canada.
Vent ' Pi p e
Through'Roof
Only$Rheem$approved$
termination$and$parts$
should$be$used$during$
installation.
AP15317 (10_09) DV Gas Manual 10 30 09.indd 14 11/9/2009 3:10:26 PM