Raypak 751 Installation And Operating Instructions Manual

Also see for 1001: OPERATING AND INSTALLATION Manual

Raypak 751 Installation And Operating Instructions Manual Manual pdf 51 page image

51burners should reignite after pre-purge time delay.8. Test limit control: While burner is operating, moveindicator on high limit control below actual boilerwater temperature. Burner should go off whileblower circulator continues to operate. Raise set-ting on limit control above boiler watertemperature and burner should reignite after pre-purge time delay.9. Test ignition system safety device:• Turn power off.• Close the pilot manual valve.• Turn power on; after about 45 seconds of pre-purge, the pilot comes on. The pilot (andtherefore the burner) should fail to light. Thestandard lockout time is 90 seconds; then thepilot light goes off and the boiler goes intopost-purge. (If the lockout module is attachedto boiler, a lockout light comes on.)• Turn the power off; open the pilot manualvalve; (reset the lockout module if applicable).• Wait 30 seconds, then turn power on. Theburner should ignite after pre-purge timedelay.10. To restart system, follow the lighting instructions.11. High limit control set to design temperaturerequirements of system? For multiple zones: flowadjusted as required in each zone?12. Boiler cycled with thermostat? Raise to highestsetting and verify boiler goes through normal start-up cycle. Reduce to lowest setting and verify boilergoes off.13. Observed several operating cycles for properoperation?14. Set room thermostat or tankstat to desired temper-ature?15. Reviewed all instructions shipped with this boilerwith owner or maintenance personnel, returned toenvelope and given to owner or placed in pocketinside front panel on boiler?OPERATIONOperating InstructionsLighting Instructions:1. STOP! Read the safety information first.2. Set the thermostat to the lowest setting.3. Turn off all electric power to the appliance.4. This appliance is equipped with an ignition devicewhich automatically lights the burner. DO NOT tryto light the burner by hand.5. Remove upper front panel.6. Turn on main manual gas valve and pilot manualgas valve.7. Wait five (5) minutes to clear out any gas. Thensmell for gas, especially near the floor. If you thensmell gas. STOP! Follow the steps in the safetyinformation. If you do not smell gas, go to nextstep.8. Turn on all electric power to the appliance.9. Set thermostat to desired setting. The appliancewill operate. The pilot burner will light after the pre-purge time delay (45 seconds). Then the pilot willlight the main burner.10. If the appliance will not operate, follow the instruc-tion "To Turn Off Gas to Appliance", and contact aqualified service technician.11. Replace upper front panel.To Turn Off Gas to Appliance1. Set the thermostat to lowest setting.2. Turn off all electric power to the appliance if serv-ice is to be performed.3. Remove upper front panel.4. Turn off main manual gas valve and manual pilotgas valve.5. Replace access panel.If boiler fails to start, check for:• Loose connections, blown fuse or serviceswitch off?• High temperature limit switch set below boilerwater temperature?• Thermostat set below room temperature?• Gas not turned on at meter or boiler?• Incoming dynamic gas pressure less than 6 in.WC for Natural gas, 10 in. WC for Propane?MAINTENANCESuggested MinimumMaintenance Schedule:Regular service by a qualified service agency andmaintenance must be performed to ensure maximumboiler operating efficiency.Maintenance as outlined below may be performed bythe owner.Yearly (Beginning of each heatingseason):1. Annual service call by qualified service agency.2. Visually check top of vent for soot. Call serviceperson to clean. Some sediment at bottom of ventis normal.