Dunkirk XEB-3 Installation, Operation & Maintenance Manual page 30

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XEB Series Cast Iron Gas-Fired Cast Iron Boilers
Check off each step as completed.
Verify base insulation is securely fastened to base panels.
Verify air purged from hydronic heating system.
Purge air from gas piping; check gas piping for leaks.
Verify proper orifices have been installed.
Follow lighting instructions in series XEB installation, operation and maintenance manual furnished with
boiler.
Visually check the main burner flame and verify it has a well defined inner blue mantel with a lighter blue
outer mantel.
Inspect vent system to verify it is functional, unobstructed, and not leaking.
Test the temperature limit control: With burner operating, adjust indicator on limit control below actual boiler
water temperature. Verify burners turn off. Verify the circulator continues to operate. Adjust the indicator on
limit control above actual boiler water temperature and verify burners reignite.
Test any additional field-installed controls. If boiler has a low water cut-off or additional high limit, test for
operation as outlined by the controls manufacturer. Burners should be operating and should go offwhen
controls are tested. When controls are reset, burners should reignite.
Test safety control circuit: with main burner operating, disconnect the ignition cable from the intermittent
pilot control box. Verify that the main gas control closes, shutting off the gas to the main burner. After verify
ing safety control circuit, turn off electric power and reconnect ignition cable. Once ignition cable securely
reset to intermittent pilot control box, turn electric power on.
For multiple heating system zones, balance flow through each zone so that it is about equal per zone.
Verify several operating cycles of proper operation.
Measure gas input:
NaturalGas Procedure £P Gas Procedure
[] Operate boiler for 10minutes.
[] LP gas input rate is determined by measuring gases
[] Turn off allother gas appliancespiped with the produced during combustion. Referto Boiler Manual
boiler, for combustion guidelinesand corresponding BTU
[] Atthe gas meter, measure the cubic feet of gas input.
used in 10seconds (CF10). [] Verifythe BTUhis approximateto the input rating on
[] Calculate input: BTUh = CF10x 360,000 the boiler rating plate.
[] Verifythe BTUh is approximateto the input
rating on the boiler rating plate.
Record the BTUh input on the OPERATIONAL BOILER TEST CERTIFICATE & SIGNED RECEIPT form.
Set operating control (thermostat(s)) to the desired design requirement.
Forward boiler manuals, instructions, wiring diagrams, piping diagrams, and supporting information shipped
with this boiler to owner and/or maintenance personnel.
Complete and sign the INITIAL OPERATIONAL BOILER TEST CERTIFICATE & SIGNED RECEIPT form.