Water$Supply$Connections
IMPORTANT:$Do$not$
apply$heat$to$the$HOT$or$
COLD$water$connections.$If$
sweat$connections$are$used,$
sweat$tubing$to$adapter$
before$fitting$adapter$to$
the$$water$connections$on$
heater.$Any$heat$applied$
to$the$water$supply$fittings$
will$permanently$damage$
the$internal$components$$
of$the$water$heater.
Mounting$the$Water$Heater
Make'sure'the'location'of'the'appliance'allows'
for'easy'access'and'operation.
Wall'studs'should'be'utilized'when'mounting'
the'water'heater'to'the'wall.'Alternately,'a'
suitable'piece'of'wood'may'be'placed'inside'
or'outside'of'the'wall'to'span'the'distance'
between'the'wall'studs.'Fasten'the'water'
heater'mounting'brackets'to'the'wood.
In'case'of'dry'wall'or'concrete'wall,'use''
drywall'anchors'or'lag'bolts.
The'water'heater'requires'120VAC/60Hz.'
Have'a'receptacle'with'ground'terminal'near'
the'water'heater.'The'length'of'the'power'
supply'cord'is'6'feet'(1.8'm).
Install'a'wood'screw'for'the'upper'bracket'
with'a'clearance'of'1/8”'(.32'cm)'between'the'
wall'and'the'screw'head.'Hang'the'center'of'
the'upper'bracket'on'the'screw.
Using'a'wood'screw'and'a'washer,'affix'the'
lower'bracket'to'the'wall'(Left'and'Right).'
Repeat'to'affix'the'top'bracket.
The'brackets'can'be'adjusted'to'change'the'
distance'between'the'back'of'the'appliance'
and'the'wall'within'the'range'of'3/8”'(.95'cm)'
to'1E1/2”'(3.8'cm).
Loosen'the'adjustment'screws'of'both'the'top'
and'the'bottom'brackets'to'adjust'the'distance'
(See'diagram'below).
Bracket
Bracket
Adjustment Screws
Adjustment Screws
TOP
BOTTOM
Upper Bracket
Washer
Washer
Wood
Screw
Wood
Screw
Wood
Screw Lower Bracket
1/8" (.32 cm)
Clearance
Plumbing'should'be'carried'out'by'a'qualified'
plumber'in'accordance'with'local'codes.
Use'approved'plumbing'materials'only.
To'allow'the'full'flow'capacity,'it'is'
recommended'to'keep'water'inlet'and'outlet'
pipes'to'no'less'than'3/4”'diameter.
To'conserve'energy'and'to'prevent'freezing,'
insulate'both'cold'and'hot'water'supply''
lines.'DO'NOT'cover'the'drain'or'pressure'
relief'valve.
To'ensure'proper'operation'of'the'water'heater,'
the'following'water'pressure'guidelines'should'
be'followed:
●$$Operation'of'the'water'heater'requires'the'
minimum'water'pressure'of'14'psi'(97'kPa)'
and'a'minimum'water'flow'rate'of'0.66'gpm'
(2.5'lpm).
●$$A'water'pressure'of'40'psi'(276'kPa)'is'
required'to'achieve'maximum'flow'rate.
●$$To'maintain'proper'performance,'ensure'
sufficient'water'supply'pressure.'The'
Required'Water'Pressure'='Min.'Operating'
Water'Pressure'(14'psi'[97'kPa])'+'Pipe'
Pressure'Loss'+'Faucet'and'Shower'
Pressure'Loss'+'Safety'Margin'(more'than'5'
psi'[34'kPa]).
●$$To'supply'hot'water'to'upper'floors,'
additional'water'pressure'(0.44'psi/ft''
[10'kPa/m])'must'be'ensured.'The'
measurement'should'be'calculated'by'the'
distance'between'the'water'inlet'of'the'
water'heater'(ground'level)'to'the'hot''
water'faucet'(upper'floor'level).
●$$Well'water'systems'should'be'set'to'ensure'
a'minimum'system'pressure'of'40'psi'(276'
kPa).'The'pressure'should'remain'stable'
during'the'operation'of'the'water'heater.
●$$When'the'water'is'supplied'from'a'water'
supply'tank,'the'height'of'the'tank'and'the'
diameter'of'the'pipes'and'their'relation'
to'water'pressure'should'be'taken'into'
consideration.'Gravity$water$pressure$is$
not$recommended.
CAUTION:$
Reinforcement$of$the$wall$is$
required$in$case$the$wall$is$
not$strong$enough$to$hold$
the$appliance.
Thermal$Expansion
A'thermal'expansion'tank'will'be'required'if'
the'water'heater'is'installed'in'a'closed'loop'
system'to'prevent'damage'to'heater,'related'
piping'and'relief'valve.'Replacing'the'relief'
valve'will'not'correct'the'problem!'The'
expansion'tank'is'designed'with'an'air'cushion'
built'in'that'compresses'as'the'system'pressure'
increases,'thereby'relieving'the'over'pressure'
condition'and'eliminating'the'repeated'
operation'of'the'relief'valve.'Other'methods'
of'controlling'thermal'expansion'are'also'
available.'Contact'your'installing'contractor,'
water'supplier'or'plumbing'inspector'for'
additional'information'regarding'this'subject.
The'image'above'may'differ'
in'appearance'from'your'
water'heater. The'image'above'may'differ'in'appearance'
from'your'water'heater.
Notice:$$Due$to$cold$
enviroments,$ice$may$
potentially$accumulate$at$
the$water$connections.$$In$
this$case,$please$insert$the$
power$cord$of$the$water$
heater$into$an$electrical$
outlet.$$The$ice$should$melt$
withing$approximately$10$
minutes$and$at$this$time$the$
water$connections$can$be$
made.
15
AP15317 (10_09) DV Gas Manual 10 30 09.indd 15 11/9/2009 3:10:26 PM