ENERGY KINETICS Ascent Combi Tune Up And Inspection

ANNUAL TUNE UP & INSPECTION
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Step 4 Clean Boiler
Remove stainless steel alloy combustion chamber using caution, it
may be hot. Brush and vacuum the heat exchange surface if needed.
Flame Sense Rod
Tip
Tip should be set back
should extend in front of
1/16" from the inside
diffuser by 1-1/4".
Diffuser Plate
Note: All burners require
"Amulet" retention head
protector.
Please refer to installation manual and burner manual for complete details and for burners other than EZ-Gas.
Ignitor Electrode
surface of diffuser.
Annual Tune Up and Inspection
Ascent™ Combi & Ascent™ Plus
Combi Gas Boilers
Step 1 Initial Test (Draft Test & CO
If there is an optional Silent Burner Cover, make sure it is in
place before testing.
1. Remove the 1/8" brass plug from the flue box plug (1) in the
top right corner of the front cover. Check draft at the flue
box (1) using a 12" long piece of ¼" O.D. steel or copper
tubing inserted approximately 8" into the boiler. Connect
this tube to your test probe using a piece of hose.
This must be negative for proper operation.
through the "over fire" test port (2). Insert the 12"
2. Check O
2
long steel or copper tube approximately 8" in through the
test port.
Nominal settings at the test port:
Natural: CO : 8.6%-9.2%, O
2
Propane: CO : 9.7%-10.7%, O
2
Step 2 Open Front Cover
1. Loosen, but DO NOT REMOVE (2) lower nylock nuts on
hinge bolts below burner.
2. Remove (3) upper nuts and support cover while opening.
3. Inspect burner head/end cone condition.
Step 3 Inspect Flue Passage and Vent System
If passage is clean, no scale, then close cover and tighten all hardware
evenly.
Clean ONLY if dirty.
Check vent system joints for proper connection, including Ascent Plus
Combi flexible coupling clamps and condensate drain.
Step 5 Remove Drawer Assembly
(Refer to burner manual for detailed instructions
on removal and for burners
other than EZ-Gas)
1. Close the front cover and finger
tighten a nut on the top center stud
to hold the cover closed while
working on the burner. Do not
tighten the rest of the nuts at this
time because you will need to open
the cover up again to check the
drawer assembly to the diffuser
plate.
2. Check porcelain condition.
3. Check and clean flame sense rod.
)
2
: 5.5%-4.5%
2
: 6.0%-4.5%
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