Harman Stove Company PB 105 - Manual (Page 22)

22 3-90-07205R19_05/13
Installation
draft Test Procedure
After the venting is completed, the firebox low draft
will need to be checked and possibly adjusted. After
removing the 3/8” bolt from the draft hole shown in
Fig. 9, insert the draft meter tube. The appliance doors
and 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 _______ The
maximum draft must not exceed -.85” W.C. Some form
of vent restrictor may be needed. (There is no control
board 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. 10 . Adjusted Low Draft
is __________ -IWC.
Don’t forget to turn the feed adjuster off of “Test”.
do not operate if the high draft exceeds -.85” W.C.
excessive draft readings may be due to restriction in
the combustion air supply. Check for obstructions.
The Control
The boiler has the option to have the control panel
covered or un-covered See Fig. 11. There is a pair
of slots provided for each position. Simply move the
cover to the desired position by placing the tabs on
the cover in the proper slots.
Draft Bolt Location
Viewing Window
Air wash Slot
Firebox Door
Fig. 9
“Test”
Low Draft
Adjustment Pot
Fig. 10
CAUTION: Hot while in operation. do not
touch. Keep children, clothing, furniture,
and other combustible material out of the
installation clearance area.
WARNING: do not operate with the hopper lid
or fire chamber or ash removal doors open.
WARNING: do not store fuel or other combustible
material within installation clearance area.
Covered Un-Covered
Fig. 11