Gas pressure for pool heater. ?
The gas meter was just replaced. The heater is the only device using this natural gas. Heater requires 11 inches wc. I tested and had 6 at my gas valve on the heater. I understand that I have to bleed the air before the heater will fire, but wouldn’t the pressure be the same after the air is bled?
- oil field trashLv 72 months agoFavorite Answer
The pressure will be the same with air or natural gas. The pressure is being provided by the regulator and it adjusts to maintain its set pressure regardless of the fluid in the line.
One thing you have to be sure of at those low pressures is the instrument you are using to make the measurements. It is easy for dial type instruments to be out of calibration. Only a instrument that uses a clear tube and water will give you a true reading.
- EarleenLv 62 months ago
You need to talk to the gas company and get some help getting this heater started. Where is your pressure regulator? You should have both a regulator and a meter, and they should be located together. That regulator is furnished by the company (its a standard pressure) and none of it is to be tampered with. So you have to bleed the air out of the line. You do that by turning on the gas until you smell gas coming out the burner. Then you power up the heater and turn it on. It should light. If your gas pressure is too low, you will have less fire. That is a supply problem that is not the regulator or meter. They can supply all the gas you need. Your incoming line could be a copper tubing line and it can be too small if it is too far downstream of the regulator. (say 3/8' x 200 feet long). The pressure is the same, gas, air or a combination. Purge it out until you can smell gas then seal it off.
- Spock (rhp)Lv 72 months ago
not true. air and gas are not compressable at same rates
- JohnLv 52 months ago
I have a High Pressure Boiler License and also Electrical. The gas pressure regulator is the most important part in any gas system excluding the gas valve. After the gas pressure regulator, gas pressure is measured in inches of water and three or four inches of water sounds right. Methane is odorless and colorless and why the gas company puts stink in it so you can smell it.