Hi All,
Second thread this week
Hayward 400K BTU heater, house/pool/heater built 2017/2018.
Had trouble getting the gas heater to stay lit when we first moved in so took it apart to clean everything. Dust and dirt, but no other indications of issues, so put it back together and fired up and fine and runs fine, but is EXPENSIVE to operate.
Kept smelling NG so got my manometer out and checked the output side of the valve - see photo. 1.46-1.50", depending whether case sealed or not. Tried adjusting, but would not go above 1.50 - I COULD adjust it down, though, and could feel the stop at the far counterclockwise position.
So, shut it down, secured valves and pump, and sealed outlet cap up using sealant on threads.
Checked inlet with heater off - see photo. 8.94" static pressure to inlet.
Started it up, and inlet pressure dropped to 2.56".
Typically this mean either the pressure is set too low at the main meter, or the meter itself is too small, or the lines are too small to the appliance.
I am gonna take a stab at the scenario - house was built in late 2017 and has a tankless water heater, and stub for outside cooktop, but no other gas appliances. Then pool built a couple of month later. Heater is HUGE for the size of the pool (10x20 kidney shape with max 5 1/2' depth on one end), but installing company says they install the same size regardless of pool (sigh). Installer tested without testing pressures (inlet and outlet plugs were incredibly tight and had no sealant), it started and ran ... ta da ... and left. First owners not particularly clueful about the pool and didn't use it except one summer (Florida).
So, first call to gas company to check sizing on meter?
Second thread this week
Hayward 400K BTU heater, house/pool/heater built 2017/2018.
Had trouble getting the gas heater to stay lit when we first moved in so took it apart to clean everything. Dust and dirt, but no other indications of issues, so put it back together and fired up and fine and runs fine, but is EXPENSIVE to operate.
Kept smelling NG so got my manometer out and checked the output side of the valve - see photo. 1.46-1.50", depending whether case sealed or not. Tried adjusting, but would not go above 1.50 - I COULD adjust it down, though, and could feel the stop at the far counterclockwise position.
So, shut it down, secured valves and pump, and sealed outlet cap up using sealant on threads.
Checked inlet with heater off - see photo. 8.94" static pressure to inlet.
Started it up, and inlet pressure dropped to 2.56".
Typically this mean either the pressure is set too low at the main meter, or the meter itself is too small, or the lines are too small to the appliance.
I am gonna take a stab at the scenario - house was built in late 2017 and has a tankless water heater, and stub for outside cooktop, but no other gas appliances. Then pool built a couple of month later. Heater is HUGE for the size of the pool (10x20 kidney shape with max 5 1/2' depth on one end), but installing company says they install the same size regardless of pool (sigh). Installer tested without testing pressures (inlet and outlet plugs were incredibly tight and had no sealant), it started and ran ... ta da ... and left. First owners not particularly clueful about the pool and didn't use it except one summer (Florida).
So, first call to gas company to check sizing on meter?