Filter
Top Products
52
50
XII Start-up and Checkout
Use the following procedure for initial start-up of the boiler:
1) Make sure that the boiler is filled with water.
2) Check all new gas piping for leaks and purge piping sections that are filled with air. See the National Fuel Gas
Code for additional information on testing and purging gas lines.
3) Verify that vent system is complete and free of obstructions before attempting to fire boiler.
4) Inspect all wiring for loose or uninsulated connections.
5) Make sure the main burners are seated properly in the rear of burner tray and on orifices.
6) Adjust thermostat to the highest setting.
7) Start the boiler using the appropriate lighting instructions for the gas valve on the boiler on pages 54 and 55.
8) Upon initial start-up, the gas train will be filled with air. Even if the gas line has been completely purged of air, it
may take several tries for ignition before a flame is established. Once a flame has been established for the first time,
subsequent calls for burner operation should result in a flame on the first try.
9) Observe pilot burner flame. See Figure 37. The pilot flame should be a steady medium blue flame covering around
3/8” to ½” of the spark electrode/flame rod.
10) Inspect the main burner flames visible through the observation port in burner access panel. The flame should be
stable and mostly blue (See Figure 38). No yellow tipping should be present; however, intermittent flecks of yellow
and orange in the flame are normal.
11) Check entire gas train for leaks using soap and water or other approved leak detection method while boiler is
firing. Fix any leaks found immediately.
12) Run the gas valve safety shutdown test with the main burners firing. Disconnect ignition cable from the ignition
module on the first base module. Both the pilot burner and main burners on the base module should stop firing.
Repeat this procedure for each base module.
NOTE
SAFE LIGHTING AND OTHER PERFORMANCE CRITERIA WERE MET WITH THE GAS MANIFOLD AND
CONTROL ASSEMBLY PROVIDED ON THE BOILER WHEN THE BOILER UNDERWENT THE TESTS
SPECIFIED IN Z21.13.
WARNING
• NEVER USE A FLAME TO CHECK FOR GAS LEAKS.
• MAKE SURE THAT THE AREA AROUND THE BOILER IS CLEAR AND FREE FROM
COMBUSTIBLE MATERIALS, GASOLINE, AND OTHER FLAMMABLE VAPORS AND
LIQUIDS.