Ascent Oil – August 2019 26
OIL BURNER OPERATION
NOTICE: For reliable operation, set Air-Fuel mixture conservatively based on installation conditions. CO
2
/O
2
and
draft readings should be taken through the over fire test port in front jacket opening at right of burner (see FIG. 6). A 1/4"
O.D. sample tube must extend at least eight (8) inches into front cover to obtain accurate readings. Smoke test and stack
temperature should be taken at flue outlet. A test port in the flue box is provided to measure draft loss and smoke.
NOTICE: For accurate efficiency calculations, measure flue gas temperature in flue box sample port.
Target for Normal Conditions
Active Area (Washer, Dryer, Shop)
* Although the Ascent Combi Boiler can operate without a trace of smoke above 14% CO
2
,
the nominal gain in efficiency may not offset the potential of increased maintenance costs.
Note 1: For combinations of above, use lowest CO
2
level or highest O
2
level.
Note 2: CO
2
/O
2
must be checked with Silent Burner Cover in place.
AFTER 15 MINUTES RUNNING, CHECK AND RECORD:
1. DRAFT AT BREECH/CHIMNEY (CONVENTIONAL VENTING ASCENT COMBI)..0.02”w.c. Minimum
(POWER VENTED ASCENT PLUS COMBI).….Negative pressure
2. CO
2
/O
2
…………………………………………………………………. .See table above
3. STACK TEMPERATURE (CONVENTIONAL VENTING ASCENT COMBI)……..350
o
to 550
o
F
(POWER VENTED ASCENT PLUS COMBI).……….150
o
to 300
o
F at breech
4. SMOKE TEST ………………………………………………………..Verify 0 smoke at breech
Draft at the breech with a chimney should be -0.02” to -0.12” w.c. on the EK1T Ascent Combi.
If not, recheck chimney, chimney base and flue pipe for blockage or clean out door openings.
Draft over fire with a power vent (sidewall vent) should be negative.
If not, check power vent fan is turning, or vent blockage.
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