Raypak HD401, HD101 Post Start-Upcheck, Follow-Up, Air Filter Inspection/Removal

Follow-Up

•Safety checks must be recorded as performed.

•Turn unit on.

After main burner ignition:

• Check Manometer(s) for proper reading(s).

• Cycle unit several times and recheck readings.

• Re-analyze with unit running record or print results.

• Remove all Manometers and replace hose, replace all gas pressure caps.

• Check for gas leaks one more time.

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 dur-
	ing 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 con-
	trols 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 temper-
	ature and burner should reignite after pre-purge
	time delay. NOTE: This test doesn’t apply to fixed
	setting high limits.
9.	Test ignition system safety device:
	· Turn on manual gas valve. Turn power on.

·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 the Operation section.

11.High limit control set to design temperatu re 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 temper- ature?

15.Reviewed all instructions shipped with this heater with owner or maintenance person, returned to envelope and given to owner?

Air Filter Inspection/Removal

1.Turn power off.

2.Locate the Air Filter panel below the air intake duct.

· Set thermostat to call for heat.

40

Fig. 33: Locate the Air Filter Panel