Rinnai RL94e REU-VC2837WD-US User Manual

 VCSeriesManual 11
FreezeProtecƟon
Makesurethatincaseoffreezingweatherthatthe
waterheateranditswaterlinesareprotecte dto
preventfreezing.Damageduetofreezingisnot
coveredbythewarranty.
LossoffreezeprotecƟonmayresultinwaterdamage
fromaburstheatexchangerorwaterlines.
Withelectrical
powersupplied,thewaterheaterwill
notfreezewhentheoutsideairtemperatureisascold
as–22°F(Ͳ30°C)forindoormodelsorisascoldas–4°F
(Ͳ20°C)foroutdoormodels,whenprotectedfrom
directwindexposure.Becauseofthe“windͲchill”
eīect,anywindorcirculaƟonoftheairontheunit
willreduceitsabilitytofreezeprotect.
Theunitmaybedrainedmanually.However,itis
highlyrecommendedthat:
x draindownsolenoidvalvesareinstalledthatwill
automaƟcallydraintheunitifpowerislost.
Theseareavailableinakit,104000059.(The
condensatetrapdrainplugandwaterdrainplug
arenotaīectedbytheautodraindownsolenoid
valvesandwillhavetobemanuallyopened.)

x asurgeprotectorwithterminalsisinstalledwhich
allowsthesolenoidvalvestooperateiftheunitis
disabledduetoadiagnosƟccode.Thisis
availableas104000057.
InaddiƟon,thesolenoidvalvesshouldbeconnected
electricallytoasurgeprotectorwithterminals.This
allowsthesolenoidvalves
tooperateifthewater
heaterisdisabledduetoadiagnosƟccode.
ThefreezeprotecƟonfeatureswillnotpreventthe
externalpipingfromfreezing.Itisrecommended that
hotandcoldwaterpipesareinsulated.Pipecover
enclosuresmaybepackedwithinsula Ɵonforadded
freeze
protecƟon.
Intheeventofapowerfailureattemperaturesbelow
freezingthewaterheatershouldbedrainedofall
watertopreventfreezingdamage.InaddiƟon,drain
thecondensatetrapanddrainline.

Maximumventlength
(indoormodelsonly)
1. Determinethenumberof90degreeelbowsin
theventsystem.(Two45degreeelbowscountas
one90degreeelbow.)
2. Refertothetabletofindthemaximumvent
lengthbasedonthenumberofelbows.
3. AdjustswitchNo.1intheSW1DIPswitch(tan
switches)ifrequiredbytheapplicablenote.
MIfthelengthisgreaterthan21Ō(6.4m)then
moveswitchNo.1(SW1)toOFF.
NIfthelengthisgreaterthan15Ō(4.6m)then
moveswitchNo.1(SW1)toOFF.
OIfthelengthisgreaterthan9Ō(2.7m)thenmove
switchNo.1(SW1)
toOFF.
PMoveswitchNo.1(SW1)toOFF.
Example: Ifyouhaveoneelbowthenyourmaximum
ventlengthis35feet(10.7m).Ifyour
actuallengthisgreaterthan15Ō(4.6m)
thenmoveswitchno.1(SW1)toOFF.
Numberof
90°Elbows
Maximumventlength

0 41Ō(12.5m)M
1 35Ō(10.7m)N
2 29Ō(8.8m)O
3 23Ō(7.0m)P
4 17Ō(5.2m)P
5 11Ō(3.4m)P
6 5Ō(1.5m)P
Ifyouhavealongerventlength(seeabove),switch
No.1isrequiredtobeintheOFFposiƟon.This
ensuresthewaterheaterwillrunproperly.Blocked
fluediagnosƟccodesandshutdownsmayresultif
switchNo.1isnotinthecorrectposiƟon.
NOTICE

Rinnai RL94e REU-VC2837WD-US Specifications

General

Type	Tankless
Installation	Indoor
Energy Source	Natural Gas or Propane
Flow Rate	9.4 GPM
Energy Factor	0.82
Gas Type	Natural Gas or Propane
Minimum Flow Rate	0.4 GPM
Voltage	120V
Ignition Type	Electronic
Maximum BTU	199, 000 BTU
Temperature Range	98°F to 140°F
Minimum BTU Input	15, 000 BTU/hr
Warranty	12 years heat exchanger, 5 years parts, 1 year labor