Boiler gas inlet screw

[Bunny Laroche]

Hello, when we loosen the screw on our Westinghouse 80k BTUh boiler's gas regulator for measuring the gas pressure in, although the screw does indeed loosen, it remains in place and does not come all the way out. So is a manometer's hose simply intended in this case to be held over this port in order to observe and adjust the boiler's gas pressure in to the 3.5" water column specified in the boiler's manual?

 

[NY_Rob]

Yes, you back the screw out three turns, slip the manometer hose over the nipple and observe the reading.

FIY- there is no means of adjusting the inlet gas pressure on the boiler if you have the Westinghouse WBRUNG080W (which is a HTP UFT-80W rebadged for Westinghouse). If your gas inlet pressure is off, it would have to be adjusted at the regulator attached to your gas meter.

Here's the official dump from the HTP UFT-80W manual:

ADJUSTING GAS PRESSURE AT THE BOILER
1. Open the gas line and water valves.
2. Use a Phillips Head screwdriver to remove the boiler front cover.
Remove the front cover.
3. Loosen the gas inlet pressure tap screw three turns a screwdriver.
Connect the manometer to the inlet gas pressure port. See Figure 55.
4. Turn on power to the boiler and turn up the thermostat to make a call
for heat.
5. The minimum and maximum inlet gas line pressures must meet the
requirements shown in Table 28.

 

[Sponsor]

 

[Bunny Laroche]

Yes, you back the screw out three turns, slip the manometer hose over the nipple and observe the reading.

FIY- there is no means of adjusting the inlet gas pressure on the boiler if you have the Westinghouse WBRUNG080W (which is a HTP UFT-80W rebadged for Westinghouse). If your gas inlet pressure is off, it would have to be adjusted at the regulator attached to your gas meter.

Here's the official dump from the HTP UFT-80W manual:

ADJUSTING GAS PRESSURE AT THE BOILER
1. Open the gas line and water valves.
2. Use a Phillips Head screwdriver to remove the boiler front cover.
Remove the front cover.
3. Loosen the gas inlet pressure tap screw three turns a screwdriver.
Connect the manometer to the inlet gas pressure port. See Figure 55.
4. Turn on power to the boiler and turn up the thermostat to make a call
for heat.
5. The minimum and maximum inlet gas line pressures must meet the
requirements shown in Table 28.

 

[Bunny Laroche]

Hi NY_Rob, thank you for your reply. We do have the Westinghouse WBRUNG080W model boiler.

If your gas inlet pressure is off, it would have to be adjusted at the regulator attached to your gas meter

So the Gas company's technician, who will be onsite to turn on the gas, will need to make any adjustments necessary to zero in the Gas Pressure value to 3.5" water column?

Because there is an adjustment dial on the boiler's gas regulator, where the Gas Pressure test port is located, that I would have assumed would be the way of adjusting the boiler's Gas Pressure. Not the combustion adjustment dial that requires an Allen key, but there is a small indented dial that appears to require a small flathead screwdriver to adjust.

 

[NY_Rob]

What I came away with during my conversation with HTP support was that there are no in or out gas pressure adjustments on the gas valve, that only adjustment on the gas valve is the throttle adjustment that's made on low fire with a combustion analyzer.

If your inlet gas pressure needs adjustment- the gas company tech has to adjust it on their side.