Draft Meter bolt
holelocation
Ona
PC
45 the draft
hole
is
underthe left
rear corner of the
1
Fig.
27
1
I
Fig.
28
1
These unitsarepre-testedatthe factorywith
exactly 120VoltsA.C., 60 Hz.They are checkedand
adjusted forfireboxtightness,gasketleakage,motor
operationand ignitor operation. The PC 45 is then
factory set at a mid-point adjustment and in most
cases will not need any adjustments.
NOTE: The
factory low draft setting may not be correct for
the units permanent installation conditions.
The control board on the PC45 is equipped
with a low draft adjustment port. Located on the
control face just to the right of the igniter light. This
voltageadjustmentisprovidedtoallowthe unitto be
adjustedfor the householdvoltagewhere the unit is
goingto be inpermanent operation.NOTE:The line
voltage varies from area to area and often home to
home. The low draft voltage should be adjustedto
achieve the most efficient burn on low burn or
"maintenance". This voltage adjustment allows the
installer to change the low voltage set point
approximately 10 volts. This adjustmentshould be
done by the installer during set up because a draft
meter reading is
reauired
to insure proper set up.
Ifthe unitisnot adjustedproperly,itdoesnot
cause a safety concern. If the unit is adjusted too
high, only effiency is lost. If the unit is adjusted too
low, the low draft pressure switch will not allow the
feeder motoror the igniterto operate.
Asimpledrafttestshouldbe performedafter
completing the flue pipe installation.To record the
resultsfor future reference:
1. Plugunitintoa 120VAC,60 HZoutlet.
I
2. Closethe hopperlid,frontview door,andthe ash
pan access door. Neither fuel or a fire are required
for thistest.
3. With the mode selector in the
"OFF"
position,
turn the feed adjusterto "TEST".
4. Recordthe high draft inW.C. (Normal is
-.35 to -.55) The controlwill beon the HighDraftfor
a total of 2 minutes.
5. After 2 minutesis up, the combustion motor will
go downto low draft andthe distribution blowerwill
go on high.Allow approximately 15secondsto pass
for the combustion motor to slow before checking
the lowdraft.
6. Ifthe low draft is between-.25 and -.35, record
the reading inW.C. If the reading is higher,
slowlyturntheset screwcounter-clockwiseuntilthe
draft lowers. Ifthe readingis lower, verv slowlvturn
the set screw clockwise untilthe draft increases.
NOTE: 'The test mode alternates from high to
low draft every
60
seconds. If more time is
needed for draft adjustment, wait until the next
low draft cycle.
NOTE: In some cases, the draft may not go as
low as -.25 to -.35 even with the set screw
completely counter-clockwise. This is not a
problem.
PC
45
CornIPelletStove
17