Installing$the$water$heater:
Additional$Considerations
$$Do'NOT'install'vent'terminal'under'any'patio'or'deck.
''To'help'prevent'moisture'from'freezing'on'walls'and'under'
eaves,'do'not'locate'vent'terminal'on'the'side'of'a' build'ing'with'
prevailing'winter'winds.
'To'help'prevent'water'lines'from'freezing,'do'not'locate'vent'
terminal'on'the'side'of'a'building'with'prevailing'winter'winds .
''''Do'NOT'terminate'vent'directly'on'brick'or'masonary'surfaces.'A'
rust'resistant'sheet'metal'backing'plate'(1x1'foot)'(30x30'cm)'is'
recommended'behind'vent.'See'figure'on'left.
'''Do'Not'locate'vent'terminal'too'close'to'shrubbery,'as'flue'gases'
may'damage'them.
''Caulk'all'cracks,'seams'and'joints'within'six'(6)'feet'(1.8'm)'of'vent'
terminal.
''Caulk'around'wall'face'plate'for'weather'tight'seal.
''All'painted'surfaces'should'be'primed'to'lessen'the'chance' of'
physical'damage.'Painted'surfaces'will'require'maintenance.
'''Do'NOT'extend'exposed'vent'pipe'of'indoor'water'heaters'outside'
of'building.
$Guard'vent'against'accidental'contact'with'people'and'pets.
Indoor$Water$Heater
12
WARNING:'Moisture$in$the$flue$gas$will$condense$as$it$
leaves$the$vent$terminal.$In$cold$weather$this$condensate$can$
freeze$on$the$exterior$wall,$under$the$eaves$and$on$
surrounding$objects.$Some$discoloration$to$the$exterior$of$
the$building$is$to$be$expected.$However,$improper$location$
or$installation$can$result$in$severe$damage$to$the$structure$
or$exterior$finish$of$the$building
Inside'
Corner Caulk'
6’'(1.8'm)'
Caulk'Zone
If'soffit'vent'is'too'close,'
block'off'and'install'new'
vent'at'another'location.
Caulk
Caulk
Rising'moisture'will'
collect'under'eaves.
6’
4’ 1'ft.'sq.'(30'x'30'cm)'sheet'metal'plate'on'
brick'or'masonry'surface,'recommended.
(1.8'm)
6’'(1.8'm)'
Caulk'
'zone'or'to'edge'of'window'
etc.,starting'within'6’'(1.8'm).
RTV'silicone'caulk
(1.2'm)
WARNING:'For$multiple$unit$installation,$a$minimum$
distance$between$vent$terminations$must$be$maintained$to$
prevent$recirculation$of$vent$gases.$Maintain$a$center`to`center$
distance$between$vent$terminations$of$19$inches$(48$cm)$for$two$
unit$installation.$Maintain$a$center`to`center$distance$between$
vent$terminations$of$21$inches$(53$cm)$for$three$or$more$unit$
installation.
AP15317 (10_09) DV Gas Manual 10 30 09.indd 12 11/9/2009 3:10:25 PM