Notes On Commissioning The Burner; Raising Flue Gas Temperature; Adjusting The Position Of Heat Exchanger Baffles - Buderus Logano G115/3 WS Installation And Service Instructions Manual

6
Commissioning the heating system
6.6

Notes on commissioning the burner

Allow burner to operate for 15 to 20 minutes before performing a
combustion test. Earlier combustion tests can lead to incorrect readings
as a result of burning off the sealing rope. We recommend rechecking the
burner after a few weeks of operation.
Incorrect burner adjustment can cause contamination of
the boiler (e.g. soot), leading to low efficiency, high
emissions, and a greater risk of service calls.
▶ Always check combustion with the following
instruments.
▶ Never adjust burner visually.
Required instruments:
• CO2 measuring equipment
• Draft measuring equipment
• Oil pressure gauge
• Stack thermometer
• Smoke tester
▶ Check the combustion chamber pressure at the test port.
▶ Check the breeching draft at a test port drilled in the vent connector
(chimney vent models only).
Fig. 29 Pressure test port on burner door
[1] Pressure test port
6.7

Raising flue gas temperature

For the set flue gas temperature for the boiler see the technical data (
Chapter 2.7, page 8).
You may raise the flue gas temperature if you discover during tests that
the flue gas temperature is too low for the type of chimney used (risk of
condensation) by one or several of the following measures:
CAUTION: Risk of burning by touching hot boiler parts.
▶ Wear appropriate protective gloves or use pliers.

▶ Adjusting the position of heat exchanger baffles

-or-
▶ Removing heat exchanger baffles
-or-
▶ Removing the heat exchanger barrier plate
30
6.7.1 Adjusting the position of heat exchanger baffles
Only adjust or remove heat the exchanger baffles in pairs.
▶ Open burner door by removing the two hexagon-head bolts at the
sides.
▶ Adjusting the position of heat exchanger baffles.
▶ Slightly withdraw the flue gas baffles from the heat exchanger.
▶ Turn the heat exchanger baffles to a slanting position and push them
back into the heat exchanger.
▶ 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.
1
Fig. 30 Adjusting the position of heat exchanger baffles
7 747 019 141-29.1RS
7 747 019 141-30.1RS
Logano G115 WS US/CA – 6 720 813 418 (2019/09)