Jacuzzi J-SP180W - Flushing the Heat Exchanger

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38 JacuzziSignatureWaterHeatersJ‐S180/J‐S199
Water Heater
Pressure Relief Valve
3/4" Ball Valve
3/4" Union
Check Valve
S
Pressure Regulator
Circulating Pump
Solenoid Valve
Boiler Drain Valve
KE
Y
G
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s
S
u
p
p
l
y
V1
V3
V2
V4
H1
H2
H3
Circulating Pump
C
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l
d
W
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t
e
r
L
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n
e
H
o
t
W
a
t
e
r
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Rinnai
An“LC#”or“00”diagnosccodeindicatestheunitisbeginningtolimeupandmustbeflushed.Failuretoflush
theappliancewillcausedamagetotheheatexchanger.Damagecausedbylimebuild‐upisnotcoveredbythe
unit’swarranty.

1. Disconnectelectricalpowertothewaterheater.
2. Closetheshutoffvalvesonboththehotwaterand
coldwaterlines(V3andV4).
3. Connectpumpoutlethose(H1)tothecoldwater
lineatservicevalve(V2).
4. Connectdrainhose(H3)toservicevalve(V1).
5. Pour
4gallonsofundilutedvirgin,foodgrade,white
vinegarintopail.
6. Placethedrainhose(H3)andthehose(H2)tothe
pumpinletintothecleaningsoluon.
7. Openbothse rvicevalves(V1andV2)onthehot
waterandcoldwaterlines.
8. Operatethepump
andallowthecleaningsoluonto
circulatethroughthewaterheaterforatleast1
houratarateof4gallonsperminute(17.6litersper
minute).
9. Turnoffthepump.
10. Rinsethecleaningsoluonfromthewaterheateras
follows:
a. Removethefreeend
ofthedrainhose(H3)from
thepail.Placeinsinkoroutsidetodrain.
b. Closeservicevalve,(V2),andopenshutoffvalve,
(V4).Donotopenshutoffvalve,(V3).
c. Allowwatertoflowthrough thewaterheaterfor
5minutes.
d. Closeshutoffvalve(V4).Whenunit
hasfinished
drainingremovethein‐linefilteratthecoldwater
inletandcleanoutanyresidue.Place filterback
intounitandopenvalve(V4).
FlushingtheHeatExchanger
e. Closeservicevalve,(V1),
andopenshutoffvalve,(V3).
11. Disconnectallhoses.
12. Restoreelectricalpowertothe
waterheater.

Followingflushprocedurecall
technicalassistance(1‐888‐835‐
9320
) forPCBresetinformaon.