Lennox GCWB95W-205

33
240012994 Rev. B [08/31/2020]
7.2 Leak Check Gas Piping
Pressure test boiler and gas connection before placing
boiler in operation.
• Pressure test over 1/2 psig (3.5 kPa). Disconnect
boiler and its individual gas shuto valve from
gas supply system.
• Pressure test at 1/2 psig (3.5 kPa) or less.
Isolate boiler from gas supply system by closing
manual gas shuto valve.
• Locate leakage using gas detector, noncorrosive
detection uid, or other leak detection method
acceptable to authority having jurisdiction. Do
not use matches, candles, open ames, or other
methods that can provide ignition source.
• Correct leaks immediately and retest.
7.3 Gas Orice - See Figure 7-2
• Models 150 = 5.8 mm ( Natural & LP)
• Models 205 = 9.0 mm ( Natural & LP)
NOTICE
Sediment trap shall be located upstream of gas
controls.
FIGURE 7-1
7 - GAS SUPPLY PIPING
FIGURE 7-2 Gas Orice Location
Gas Orice -205 shown
Green Side Down - Toward
gas valve
Gas Valve
Gas Orice
150
Gas Orice
205