A.O. Smith BL-100 User Manual

9
INSULATION BLANKETS
Do not obstruct water heater air intake
with insulating blanket.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Breathing Hazard - Carbon Monoxide Gas
Insulation blankets are available to the general public for
external use on gas water heaters but are not necessary
with these products. The purpose of an insulation blanket is
to reduce the standby heat loss encountered with storage
tankheaters.Thewaterheaterscoveredbythismanualmeet
or exceed the Energy Policy Act standards with respect to
insulation and standby heat loss requirements, making an
insulationblanketunnecessary.
Shouldyouchoosetoapplyaninsulationblankettothisheater,
you should follow these instructions. See the Installation
Considerations section of this manual for identification
of components mentioned below. Failure to follow these
instructions can restrict the air flow required for proper
combustion,potentiallyresultinginfire,asphyxiation,serious
personalinjuryordeath.
• DO NOTapplyinsulationtothetopofthewaterheater,as
thiswillinterferewithsafeoperationofthedrafthood.
• DO NOTcoverthethermostatortheTemperature-
PressureReliefValve.
• DO NOTallowtheinsulationtocomewithin2inches(5
cm)ofthefloortopreventblockageofcombustionairflow
to the burner.
• DO NOTcovertheinstructionmanual.Keepitontheside
ofthewaterheaterornearbyforfuturereference.
• DOobtainnewwarningandinstructionlabelsfromthe
manufacturerforplacementontheblanketdirectlyover
theexistinglabels.
• DOinspecttheinsulationblanketfrequentlytomake
certainitdoesnotsag,therebyobstructingthe
combustionairflow.
HARD WATER
Wherehardwaterconditionsexist,watersof teningorthethreshold
type of water treatment is recommended. This will protect the
dishwashers,coffeeurns,waterheaters,waterpipingandother
equipment. See the Maintenance Section in this manual for
sedimentandlimescaleremovalprocedures.
CIRCULATION PUMPS
Acirculatingpumpisusedwhenasystemrequiresacirculating
loop or there is a storage tank used in conjunction with the
water heater. See Water Piping Diagrams in this manual for
installationlocationofcirculatingpumps.
SeetheCirculationPumpWiringDiagramsbelowforelectrical
hookup information. Install in accordance with the current
edition of the National Electrical Code, NFPA 70 or the
CanadianElectricalCode,CSAC22.1.
Allbronzeorstainlesssteelcirculatingpumpsarerecommended
forusedwithcommercialwaterheaters.
Somecirculatingpumpsaremanufacturedwithsealedbearings
anddonotrequirefurtherlubrication.Somecirculatingpumps
must beperiodically oiled. Refertothe pumpmanufacturer’s
instructionsforlubricationrequirements.
CIRCULATING PUMP WIRING DIAGRAM
STORAGE TANK OR BUILDING RECIRCULATION
FIELD SUPPLIED TEMPERATURE CONTROL
INSTALLED IN THE STORAGE TANK
OR CIRCULATING LOOP RETURN LINE
CIRC
PUMP
MOTOR
L1 HOT
L2 NEUTRAL
120 VAC
POWER
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH WATER HEATER AS THIS
MAY CAUSE ELECTRICAL LINE NOISE AND
LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
FIGURE 4.
CIRCULATING PUMP WIRING DIAGRAM
DISHWASHER LOOP WITH TOGGLE SWITCH
FIELD SUPPLIED TEMPERATURE
CONTROL INSTALLED IN THE
CIRCULATING LOOP RETURN LINE
DISHWASHER
TOGGLE
SWITCH
CIRC
PUMP
MOTOR
L1 HOT
L2 NEUTRAL
120 VAC
POWER
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH WATER HEATER AS
THIS MAY CAUSE ELECTRICAL LINE NOISE
AND LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
FIGURE 5.

A.O. Smith BL-100 Specifications

General

Brand	A.O. Smith
Model	BL-100
Category	Water Heater
Language	English