Справочник Пользователя для Lennox International Inc. GWB8-187IE-2

• Do not try to light any appliance.
• Do not touch any electrical switch; do not use 

any phone in your building.

• Immediately call your gas supplier from a 

neighbor’s phone.  Follow gas supplier’s 

instructions. 

• If you cannot reach your gas supplier, call the fi re 

department.

  

5" w.c.

11" w.c.

13.5" w.c.

13.5" w.c.

3.5" w.c.

10" w.c.

Verify minimum pressure while boiler is operating.               

Verify maximum pressure when boiler is not operating

Connecting Gas Piping
Gas line enters boiler from right side. Flexible gas 

connectors must never breach any boiler openings.              

• Use piping materials and joining methods acceptable 

to authority having jurisdiction.  In absence of such 

requirements:

• USA - National Fuel gas Code, ANSI Z223.1/NFPA 54
• Canada - Natural Gas and Propane Installation Code, 

CAN/CSA B149.1

• All pipe compound must be resistant to liquefi ed 

petroleum gas.

• Install ground joint union in gas supply line between 

shut-off valve and boiler controls.

• Install sediment trap upstream of gas controls.
• Use two pipe wrenches when making connection to gas 

valve to keep it from turning.

• Install manual shut-off valve in vertical pipe about 5 feet 

(1.5m) above fl oor. See Figure 8.

• Tighten all joints securely. 
• Propane gas connections should only be made by 

licensed propane installer.

• Two-stage regulation should be used by propane 

installer.

• Propane gas piping should be check by propane installer. 

Check Gas Supply
Gas pipe must be correct size for length of run and for 

total BTU per hour input of all gas utilization equipment 

connected to it. See Table 6 & 7, Page 15 for proper size. 

Be sure your gas line complies with local codes and gas 

company requirements.

Fire Hazard.  Do not use matches, candles, open 

fl ames, or other methods providing ignition source. 

Failure to comply will result in death or serious        

injury.

  

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 shutoff 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 

shutoff valve. See Figure 8.

• Locate leakage using gas detector, noncorrosive 

detection fl uid, or other leak detection method 

acceptable to authority having jurisdiction. 
• Correct leaks immediately and retest.