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ENGLISH
Jandy
®
Legacy™ Model LRZE Pool/Spa Heater by Zodiac
®
|
Installation and Operation Manual
SomeoftheservicingproceduresfortheLegacy
ModelLRZelectronicheaterarehazardous
becausetheyinvolvefuelgas,electricity,moving
partsandprocedureswhichrequiretestingor
temporarybypassofsafetycontrols.Forthis
reason,theheatermustbeservicedonlybya
qualiedprofessionalservicetechnician.
TheLegacyModelLRZelectronicheaterincorpo-
ratesuniquedesignfeatures.Incorrectserviceof
thisheatercanresultinpersonalinjuryordamage
toproperty.Toavoidsuchhazards,theheatermust
beservicedonlybyaqualiedprofessionalservice
technician.
Certainesprocéduresd’entretienetderéparation
desappareilsdechauffageàfaiblesémissions
LegacyetLegacyprésententdesdangers,car
ellesmettentenjeudesgazcombustibles,des
composantsélectriques,despiècesmobilesetdes
procéduresquinécessitentdesmisesàl’essaioula
dérivationtemporairedescommandesdesécurité.
Pourcetteraison,l’appareildechauffagedoitêtre
entretenuetréparéuniquementparuntechnicien
professionnelqualié.
Lesappareilsdechauffageàfaiblesémissions
comportentdescaractéristiquestechniques
uniques.Uneréparationouunentretieninadéquat
peutentraînerdesblessurescorporellesoudes
dommagesàlapropriété.Pourcetteraison,
l’appareildechauffagedoitêtreentretenuetréparé
uniquementparuntechnicienprofessionnelqualié.
A qualied professional technician must service
the Legacy Model LRZ electronic pool heater using
Zodiac Pool Systems, Inc.'s service procedures. Before
calling for service, however, the owner should check
for obvious problems. The other components in the
pool system, including pump, lters and strainers,
water valves, gas supply, electrical power and time
clocks, have an affect on heater operation.
Conrm that the heater control is set to either
or and that the corresponding temperature
set point is set high enough to make the heater
operate. Make sure the pump is operating, that the
lter and strainers are not clogged, that there are no
mispositioned water valves, that the gas or electric
power supplies are not shut off and that time clocks
are properly adjusted. Also be sure that there is no
blockage of the exhaust vent grill or rear louvers,
which supply combustion air to the burners.
The Legacy Model LRZ electronic pool and spa
heater has an atmospheric combustion system. This
system is illustrated in Figure 27.
As the heated exhaust gases rise out of the
combustion chamber, ow is created through the
system and fresh combustion air is drawn into the
heater through the louvers cut into the front and sides
of the heater. Gas is forced through an orice into
the open end of a burner. When the gas ows into the
burner, a “negative” pressure is created at the opening
of the burner. This negative pressure pulls air into the
burner with the gas and mixes the two together. As
the gas/air mixture ows through the burner ports it is
ignited in the combustion chamber. Hot combustion
products then rise through a highly efcient heat
exchanger. Combustion products then enter a ue
collector and are directed to the outdoors through the
top of the heater or a vent pipe and cap.
1. Gas Valve / Regulator - The gas valve controls
gas ow into the manifold. It provides ow only
when the temperature control requires heat and
only if all safety controls enable operation. It
is also a positive pressure regulator. It regulates
the gas pressure in the manifold to specica-
tions addressed earlier in this manual. This is
necessary for proper operation of the burner
system.
VENT TOP
FLUE COLLECTOR
HEAT EXCHANGER
COMBUSTION CHAMBER
BURNER
BURNER TRAY SHELF
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