Harman PF100 - Installation - Power and Draft; Installing Electrical Power; Checking & Recording the Low Draft

20
3-90-08101R23_06/13
Installing Electrical Power:
Toinstallpowertothefurnacerstremovethecoveronthe
circuitbreakerjunctionboxshown.
Insideyouwillndthemainterminalblock.(Seewiringdiagram
on page 36 for location of main terminal block and proper
powerconnections).Inthebottomoftheboxaknockouthole
isprovidedfortheincomingwire.
The minimum recommendedcircuitis15Amp120V.A.C.60
Hz.Thisfurnaceshouldbetheonlyapplianceonthecircuit.
This furnace should never be powered by the use of an
extension cord.
Therecommendedhighandlowvoltagesare,130V.A.C.60
Hzmaximumhighvoltage,and113V.A.C.60Hzminimum
lowvoltage.
The furnace will continueto operate at voltages as low as
105V.A.C.,althoughitcannotbeguaranteedthatautomatic
ignitionwilloccur.Also,thereisthepossibilityofadistribution
blowermotoroverload.
NOTE: If other sources of electrical power are to be
used (such as a generator) for normal operation or
emergency operation, this source should be checked
before installation. Many generators and inverters may not
supply 120V.A.C. 60Hz. power stable enough to operate
the control board properly. (Control board damage could
occur).
Checking & Recording the Low Draft:
Aftertheventingiscompleted,thereboxlowdraftwillneed
tobecheckedandpossiblyadjusted.Afterremovingthe3/8”
boltfromthedraftholeshowninFig.38,insertthedraftmeter
tube.Theinnerashdoorandthehopperlidmustbelatched
duringthistest.(Itisrecommendedthatthedraftmeterhave
ascaleof0to1”WC.)
TurntheFeedAdjusterto“Test”.thiswillstartthecombustion
blower and allow you to check and record the High Draft
______-IWCdate_______(Thereisnoadjustmentfor
theHighDraft)
After the first 60 seconds, the “Test” mode lowers the
combustionblowervoltagetotheLowBurnvoltage.During
this lowered voltage cycle the Low Burn Draft must be
checked andadjustedifnecessary.Therecommendedlow
draftsettingshouldbebetween-.25&-.35IWC.Depending
ontheamountofverticalrise,itmaynotbepossibletogeta
lowdraftreadinginthisrange.Inthiscase,amaximumlow
draftof-.55isacceptable.
Theadjustmentscrewisthroughthesmallholetotheright
ofthe Igniter Light. See Fig. 39.Adjusted the Low Draft to
__________-IWC.
Don’t forget to turn off of “Test” mode.
Installation
Fig. 38
Draft meter bolt
Furnace Control
“Test”
Low Draft Adjustment Pot
Fig.39
Fig. 37