Post Start-Up Check - Raypak HD401 Installation & Operating Instructions Manual

• 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.
· 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 the
Operation section.
11. High limit control set to design temperature
requirements of system? For multiple zones: flow
Fig. 37: Locate the Air Filter Panel
adjusted as required in each zone?
Fig. 38: Remove the Screws and Panel
45