Placing the Boiler in Operation
8
Logano G125 BE - Specifications subject to change without notice.
44
z
Pull flue baffles slightly out of the flue passages.
When you need/want to remove flue baffles for fresh air
operation, you can use the Table 13 below to estimate
the effect on stack temperature.
z
Close burner door and secure with burner door bolts
(ca 90 Lbs/inch). Tighten bolts evenly.
z
Install burner cable back to burner disconnect.
z
Recheck tightness of burner door after operation the
burner for 10 minutes.
z
Check stack temperature again.
8.8.2 Removing Flue Blocking Plate
When the stack temperature after removal of flue baffles
is still too low, you can also remove the front section
blocking plate to increase the stack temperature.
The opening of the burner door is described in
Î
Chapter 8.8.1.
z
Remove blocking plate by removing set screw from
the front section.
z
Measure the stack temperature again
Î
Chapter 8.8.1.
8.9
Testing of the Manual Reset High Limit (STB) of Logamatic controls
The manual reset high limit will permanently interrupt
burner operation once its limit (230 °F) is exceeded. To
restore operation, it is required to reset this control and
lower the water temperature well below its fixed setting.
z
Refer to
Î
Logamatic Service Manual to check op-
eration of manual reset high limit.
Fig.44
Removal of the flue baffles
Fig.45
Blue baffle plates for fresh air operation
1
Flue baffle plates Nr. 1
2
Flue baffle plates Nr. 2
3
Flue baffle plates Nr. 3
4
Flue baffle plates Nr. 4
4
3
2
1
1
2
3
4
Flue baffles
Increase in stack temperature
Removal of Nr. 4
about 40 °F
Additional Removal of Nr. 3
additional 40 °F
Additional Removal of Nr. 2
additional 40 °F
Table 12 Increase in Stack Temperatures
Fig.46
Removal of flue blocking plate
