Harman-stove-company PB 105 Bedienungsanleitung PDF herunterladen (Seite 21)

3-90-07205R19_05/13

Over Heat Safety Zone

OverHeat Safety Zone (Dump Zone): STRONGLY RECOMMENDED in all installations.

WhenthepelletboilerisoperatingatHighburn,andalldemandfromtheheatingsystemstops,the

controlwillreducethefeedrateandshutdowncompletelyasnecessary.Thismaytakeseveralminutes,

andtheremainingheatmaycausethewatertemperaturetocontinuetorise.Ifthetemperaturegetstoo

high,theOVERHEATSAFETYZONElightonthecontrol(seepage23)willilluminate,andtheDARK

BLUEcircuitinthejunctionboxisenergized(seewiringdiagram).Thiscircuitwillow120Vtooperatea

circulatorpumpinstalledtoowtotheoverheatdumpzoneestablishedintheoriginalinstallationplan.

Ifopeningazonevalveisthechosenmethodofdumpingtheexcessheat,avoltagereductionrelay

willmostlikelybeneeded.Ifthewatertemperaturecontinuestorisetotheriskofboilingpoint,thefeed

systemwillstopandtheboilerwillshut-down.Amanualresetwillthenberequiredtooperatetheboiler.

Withoutadumpzoneinplace,theexcesstemperaturecouldbuildpressuretothepointofopeningthe

reliefvalve,orwiththeatmosphericconversionitmayallowthewatertoboilandexitthroughtheover-

owoftheatmospherictank.Bothscenariosmaycreatewaterdamageand/orasliphazard.

Theboilingtemperatureofwatervaries atdifferentaltitudesandatmosphericpressures.Therefore,

atelevationsabove3000feet,andwhenusingtheatmosphericconversion,circuitboarddipswitch#6

mustbeinthe“ON”position.

MINIMUM OF 72" OF 3/4"

FINNED BASEBOARD

(HIGH TEMPERATURE) BASEBOARD HEAT

SYSTEM RETURN

SHUT-OFF VALVE

NOTE: ALWAYS REFER TO THE INDIVIDUAL COMPONENTS

RECOMMENDED INSTALLATION INSTRUCTIONS FOR THE PROPER

MOUNTING POSITION AND LOCATION WITHIN THE PIPING SYSTEM.

120VAC,NORMALLY OPEN,FULL FLOW,

SOLENOID VALVE or EQUIVALENT

THE SOLENOID SHOULD BE

CIRCUIT AS THE BOILER

BASEBOARD MUST BE AT LEAST

24" HIGHER THAN BOILER FOR

PROPER GRAVITY FLOW

UNION

BALANCING

VALVE

UNION

PIPE TO WITHIN

6" OF THE

FLOOR OR A

FLOOR DRAIN

* TEMPERATURE/PRESSURE GAUGE

* AQUASTAT WELL

* PRESSURE RELIEF VALVE

SHUT-OFF VALVE

* ITEMS SUPPLIED

POWER FAILURE SYSTEM SUPPLY 3/4"

SYSTEM SUPPLY

POWER FAILURE SYSTEM RETURN 3/4"

EXAMPLE OF PIPING IN ACCORDANCE

WITH (CAN/CSA-B366.1)

A POWER FAILURE HEAT DISSIPATION LOOP

Power Failure / Heat Dissipation Loop

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