Utica PEG 112 missing burner parts

Robert_H

I service oil burners but do not service gas appliances professionally. I do service and have installed my own equipment and I have serviced my daughters for 3 years.

My daughter has a Utica PEG112CDE running on natural gas. yesterday I performed the annual maintenance and noticed two items missing when I looked at the manual. (I did not notice this previously)

It looks to me like Item 4, Base Plate and Item 8 Burner Access Door are missing. The manual does not show a picture of the items installed, just the exploded view.

In the following picture the manifold cover is removed but no other parts.

its been this way for the three years she's been in the house. I clean the HX and burner tubes each year and test combustion, in addition to the steam side maintenance. I would think these missing parts would allow more excess air/O2 into the picture but combustions numbers are in spec. (correct me if I'm wrong)

Tstack	418
O2	8.7
CO	34
CO AF	58
EFF	78
ExAir	63
CO2	6.9
AT	41
Net Stack	377

Lastly here is a shot of the flame

I'm finding the parts available at a reasonable price, so its a no brainer.

Big Ed_4

You would need #8 for designed combustion . That would be easy to make .

Steamhead

https://forum.heatinghelp.com/discussion/comment/1888025#Comment_1888025

This. And the other name for that part is "Rollout Shield" since it keeps the flame from coming out of the front of the boiler, where it can ignite the gas going into the burner tubes. So this is a safety issue as well.