Removing Heat Exchanger Baffles; Removing The Heat Exchanger Barrier Plate - Buderus Logano G115/3 WS Installation And Service Instructions Manual

6.7.2

Removing heat exchanger baffles

You can remove the baffle plates in pairs to raise the flue gas
temperature.
▶ Open burner door by removing the two hexagon-head bolts at the
sides.
▶ Remove the baffle plates towards the front.
▶ Close burner door with the two hexagon bolts (approx. 90 inch-lbs)
Tighten the hexagon bolts evenly to properly seal the burner door.
▶ Re-check the flue gas temperature.
Fig. 31 Removing heat exchanger baffles
When you need/want to remove flue baffles for fresh air operation, you
can use the Table below to estimate the effect on stack temperature.
Flue baffles Increase in stack temperature
Flue baffels
Removal of Nr. 3
Additional Removal of Nr. 2
Table 13 Increase in stack Temperatures
▶ Close burner door and secure with burner door bolts (ca 90 Lbs/
inch). Tighten bolts evenly.
▶ Install burner cable back to burner disconnect.
▶ Recheck tightness of burner door after operation the burner for
10 minutes.
▶ Check stack temperature again.
Logano G115 WS US/CA – 6 720 813 418 (2019/09)
7 747 019 141-31.1RS
Stack Temperature
About 40 °F
Additional 40 °F
Commissioning the heating system
3
2
1
Fig. 32 Flue baffle plates for fresh air operation
[1] Flue baffle plates Nr. 1
[2] Flue baffle plates Nr. 2
[3] Flue baffle plates Nr. 3
6.7.3

Removing the heat exchanger barrier plate

You can remove the blocking plate to further raise the flue gas
temperature if the flue gas temperature is still too low after removing of
the baffles.
▶ Open burner door by removing the two hexagon-head bolts at the
sides.
▶ Remove diverter plate by loosening bolt.
▶ Re-check the flue gas temperature.
Fig. 33 Removing the heat exchanger barrier plate
6
3
2
1
6 720 813 418-01.1T
7 747 019 141-32.1RS
31