23
3-90-07205R26_10/14
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 uncovered 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.
Firebox Door
Air Wash
Slot
Viewing Window
Draft Bolt
Location
Fig. 9
“Test”
Low Draft
Adjustment Pot
Fig. 10
Covered
Uncovered
Fig. 11
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.
do not store fuel or other combustible material within
installation clearance area.
WARNING
!
Summary of Contents for PB 105
Page 51: ...3 90 07205R26_10 14...
