Crown Boiler PHNTM080 - Page 88

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10) If the boiler is to be converted to propane (LP gas) or used at altitude above 2000ft, start-up and adjust throttle as described in
Appendix A.
11) Start the boiler using the lighting instructions on page 90. With the boiler powered up, and with no call for heat, the display
should look like Figure 11.2a. Once a call for heat is present, it will look like Figure 11.2b.
12) Theboilershouldattempttoreapproximately30secondsafteracallforheatappears.Withtheupperfrontcoverremoved
from the boiler, this try for ignition will appear as an audible spark (lasting approximately 4 seconds) and an audible click
fromthegasvalve.Uponinitialstart-up,thegastrainwillbelledwithair.Evenifthegaslinehasbeencompletely
purgedofair,itmaytakeseveraltriesforignitionbeforeaameisestablished.Iftheboilerdoesnotlightafterfourtries
for ignition, it will enter a “soft lockout” and will wait for one hour before attempting another ignition sequence. This soft
lockoutcanberesetbyinterruptingpowertotheboilerforafewseconds.Onceaamehasbeenestablishedfortherst
time,subsequentcallsforburneroperationshouldresultinaameonthersttry.
13) Ifthereisaproblemthatappearsbeforethersttryforignition,oriftheboilerfailstolightaftervetriesforignition,the
ashing“ActiveFault”buttonwillappearontheHomescreen(Figure 11.2c). Touching this button will take the user to the
Diagnosticsmenuwherethecauseoftheproblemcanusuallybefoundbypressingtheashingbuttononeachsuccessive
screen. For more information, see Section XIV of this manual.
14) Inspecttheamevisiblethroughthewindow.Onhighretheameshouldbestableandmostlyblue(Fig.11.3).Noyellow
tippingshouldbepresent;however,intermittentecksofyellowandorangeintheamearenormal.
15) Check the inlet gas pressure. Verify that the inlet gas pressure is between the upper and lower limits shown on the rating
plate with all gas appliances on and off.
BEFORE OPENING VENT.
ATTACH 1/4" ID CLEAR
TUBING TO HOSE BARB
AND ROUTE TO SAFE PLACE
AWAY FROM CONTROLS
MANUAL AIR VENT
FIGURE 11.1: LOCATION OF MANUAL AIR VENT