10. Perform Startup Checks and Adjustments
FAILURE TO PERFORM THESE CHECKS of the boiler's combustion and
safety systems may result in serious property damage, injury, or death.
IF YOU SMELL GAS, STOP and repair the leak. Lighting the boiler when gas is
leaking may cause explosion or fire.
Follow the checklist below:
1.Verify that the venting, water piping, gas piping, and electrical systems are properly installed and checked.
2.Apply power to the boiler.
3.Adjust zone thermostat to maximum setting.
4.Allow gas line to purge of air.
q Boiler lights cleanly within 60 seconds.
5.Adjust gas input rate. See Appendix F
– Adjusting Gas Input Rate
qPilot and main burner flames appear clean and blue.
6.Disconnect pilot lead wires from gas valve (Figure
qBoiler shuts off.
7.Reconnect pilot lead wires to gas valve.
qBoiler restarts.
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8.Adjust zone thermostat to minimum setting. q Boiler shuts off.
9.Adjust zone thermostat to maximum setting.
10.Observe temperature gage as boiler heats.
11.Adjust the high limit setting to its minimum level (see "Programming High Limit" in Section 8).
q Boiler shuts off when temperature gage reads within 15°F of high limit setting.
12.Return high limit to the desired setting (see
"Programming High Limit" in Section 8).
13.Check draft. See Appendix G
– Checking Draft and Combustion.
qNo spillage observed.
14.Check combustion in the vent stack and record results in the spaces provided below.
_____ | CO2 | (less than 7%) |
_____ | O2 | (more than 9%) |
_____ | CO | (less than 100 ppm, air free) |
ANY FAILED STARTUP CHECK Must be corrected before placing the
boiler in service.
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