Maintenance
Blower Cover
Latch
Fig. 22
Theexhaust sensing 
probe (ESP) is 
located here.
Three Thumb Screws | Fig. 23 |
| Sealing Overlap |
5” Double Bladed Fan |
|
(standard) |
|
| Fig. 24 |
Combustion Blower Cleaning
Remove the combustion blower cover.There are two latches that hold the shield in place (Fig. 22). Flip the latches up and pull the shield away from the boiler.
The boiler MUST be OFF at the circuit breaker, and
COOL before you attempt to clean the combustion blower.
The wire to the combustion blower doesn’t need to be disconnected during the cleaning process.
Loosen the three (3) thumb screws about 4 turns each. See Fig. 23. Hold the motor head with one hand and the blower plate handle with the other hand. Pull outward on the plate handle until the complete unit comes loose. Now rotate the plate
Clean the blower fan blade and the blower plate sealing overlap. See Fig. 24.
NOTE: Be careful not to bend the fan blade, this will throw the fan blade out of balance or it may rub the inner chamber, which may affect the performance of the boiler. Any horizontal and vertical flue pipe directly above the unit should be cleaned at this time
NOTE: The horizontal flue pipe directly above the boiler is the first place fly ash will settle, due to the slowing of flue gas velocity through horizontal pipe. Cleaning of horizontal venting pipes is very important to the efficiency of this boiler.NOTE: The exhaust probe sensing tip extends into this same area. CARE MUST BE TAKEN NOT TO DAMAGE THE ESP DURING CLEANING. Bending of the ESP will make it difficult to remove if it should become necessary. See Fig. 23.
Clean the boiler blower plate sealing overlap. See Fig
24.Make sure there is no fly ash buildup that may block the easy flow of flue gases into the combustion blower inlet hole. (A flashlight may be necessary.)
CAUTION: Inspect flue pipes, flue pipe joints and flue pipe seals regularly to ensure that smoke and flue gases are not entering the home.
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