Solo Plus Instructions 1-800-782-9927 Version 12-13
Tarm Biomass · 4 Britton Lane · Lyme, NH 03768
4.16.4 Maintaining Door Seals
It is very important to maintain tight seals on the doors. Check the loading door and ash door gaskets
regularly to insure that they are sealing well and that there is no unwanted air leakage into the boiler.
Poor seals can result in air leakage into the boiler and lead to inefficient burning of the boiler or the
escape of smoke and gasses from the boiler. The rope seal used to on doors should be inspected regu-
larly.
Check the seal for alignment on the door frame by examining the imprint made by the frame on the
seal.
Steps to Replace the Door Seals:
1. Remove the two hinge bolts and take off the door.
2. Remove the old sealing with a screwdriver or a chisel.
3. Clean the sealing groove.
4. Press new sealing into the groove. When half the sealing has been inserted, adjust the end and
press in the rest.
5. Secure the sealing by gently tapping with a hammer.
6. Replace the door.
7. Close the door and check its seal.
4.16.5 Cleaning the Primary Air Duct and Channels
The primary air channels (on both sides of the load door) can occasionally become blocked reducing
the primary air flow to the firebox.
Checking the Primary Air Openings:
1. Open the outer door and load door.
2. Check the Primary Air duct holes
(Fig.4.8 & 4.9)
for unobstructed airflow.
3. If necessary, clean the openings and air channels.
Boiler Operation, Maintenance, and Service > Maintaining Door Seals
Page 46
NOTE
Please inspect the draft fan carefully – even a thin coating of ash significantly reduces the air
flow and must be removed.
Fig. 4.8
Fig. 4.9
Primary Air Ducts
Primary Air Hole
