Harman Stove Company PB 105 manual Draft Test Procedure

Installation

Firebox Door

Draft Bolt Location

Air Wash Slot

Air wash Slot

Viewing Window

Fig. 9

“Test”

Low Draft

Adjustment Pot

Fig. 10

CoveredUn-Covered

Fig. 11

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 recom- mended 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 recom- mended 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.

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.

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