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16
10-b
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 re.
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
10-a
q Pilot and main burner flames appear
clean and blue.
6. Disconnect pilot lead wires from gas valve
(Figure 10-b).
q Boiler shuts off.
7. Reconnect pilot lead wires to gas valve.
q Boiler restarts.
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.
q No spillage observed.
14. Check combustion in the vent stack and
record results in the spaces provided below.
_____ CO
2
(less than 7%)
_____ O
2
(more than 9%)
_____ CO (less than 100 ppm, air free)
ANY FAILED STARTUP CHECK
Must be corrected before placing the
boiler in service.