Section O - Raypak 122-322 Operating And Installation Instructions

SECTION O: POST START-UP CHECK
Check off steps as completed:
1. Heater and heat distribution units or storage tank filled with water?
2. Automatic air vent, if used, open two full turns during venting procedure?
3. Air purged from system?
4. Air purged from gas piping? Piping checked for leaks?
5. Followed start-up procedure for proper start-up?
6. Is burner flame visible?
7. Test safety controls: If heater is equipped with a low water cut-off or additional safety controls, test for operation as
outlined by manufacturer. Burner should be operating and should go off when controls are tested. When safety devices
are restored, burners should reignite after pre-purge time delay.
8. Test limit control: While burner is operating, move indicator on high limit control below actual heater water
temperature. Burner should go off while blower and circulator continue to operate. Raise setting on limit control above
heater water temperature and burner should reignite after pre-purge time delay..
9. Test ignition system safety device:
· Turn on manual gas valve. Turn power on.
· Set thermostat to call for heat.
· When the unit is in operation. Disconnect combustion air blower pressure switch, burner should go off
immediately.
· Wait 5 minutes.
· Reconnect combustion air pressure switch, burner should reignite after pre-purge time delay.
10. To restart system, follow lighting instructions in Section P.
11. High limit control set to design temperature requirements of system?
For multiple zones: flow adjusted as required in each zone?
12. Heater cycled with thermostat? Raise to highest setting and verify heater goes through normal start-up cycle.
Reduce to lowest setting and verify heater goes off.
13. Observed several operating cycles for proper operation?
14. Set room thermostat or tankstat to desired temperature?
15. Reviewed all instructions shipped with this heater with owner or maintenance person, returned to envelope
and given to owner or placed in pocket inside front panel on heater?
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