gurgling in heating pipes

[laurancej]

I have oil fired forced hot water heat, with a tankless water heater. Recently we have had lots of gurgling in the heater pipes, I assume from air. How do we resolve that? Keep in mind that we have minimal familiarity with terminology.

thanks
:)

[Andrew]

Generally, gurgling in the pipes is due to air in the system. Is the gurgling in the heating pipes (recirculated hot water to radiators), or in the domestic hot water (hot water to faucets) pipes?
If it is in the heating pipes, You should try to bleed the air out of the system. Try to locate a bleeder valve in the piping near the radiators. You will loosen the screw with either a screwdriver or a small square drive key (available at hardware stores), and let out any accumulated air. When the air has escaped, water will follow. Hold a cup near it to catch any escaping water. Be sure to do this while the circulating pump is off. You may need to do this at several radiators to get all of the air.
There are other issues involved here regarding the system makeup water valve we can cover after you check for air.
Post back with any questions :)