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Troubleshooting: Burner runs continuously (too little heat).
Source
Procedure
Causes
Correction
Combustion
Check burner
combustion for
CO2, stack tem
perature, and
smoke
Low CO
2
less
than 10%.
Too much combustion air
Reduce combustion air.
Air leaks into heat exchanger
around inspection door, etc.
Correct cause of air leak.
Excessive overfire draft
Adjust barometric draft con
trol for correct draft.
Incorrect nozzle assembly
depth
Set to 1.13.
High smoke
reading more
than a trace.
Dirty or plugged heat exchanger
Clean heat exchanger.
Readjust burner.
Insufficient overfire draft
Increase draft.
Incorrect nozzle assembly
depth
Set to 1.13.
Too little combustion air
Increase combustion air.
High stack tem
perature is more
than 550
_
F Net.
Low volume indoor blower air
Check pump coupling for
wear / slippage.
Dirty heat exchanger
Clean heat exchanger.
Dirty burner blower wheel
Clean burner blower wheel.
Dirty furnace air filters
Clean or replace filter.
Restricted or closed registers or
dampers
Readjust registers or damp
ers.
Oil Pressure
Inspect fire and check
oil pressure.
Partially plugged or bad nozzle
Replace nozzle.
Oil pressure is too low
(less than 140 psi.)
Increase oil pressure to 140
psi.
ELO183DH Start-Up & Performance Check List
Filter Clean & Secure?
Supply Voltage
Electrical Connections Tight?
Job Name
Job Location
Installer
Unit Model No.
Oil Pump Pressure [recommended minimum 140 psi]
Job No.
City
City
Serial No.
Date
State
Serviceman
Draft Reading (recommended .03-.04 inches w.c.)
Flue Connections Tight?
HEATING SECTION
THERMOSTAT
Calibrated?
Heat Anticipator Properly Set?
Level?
Blower Motor Amps
Blower Motor H.P.
Piping Connections Tight?
Vent Clear?
State
Temperature Rise
External Static Pressure
Net Stack Temp
Burner Model No.
Serial Number
All Valves Open?
PROPER DRAFT
% CO
2
% O
2
ppm CO
Stack Draft
Overfire Draft
Ambient Temp
Smoke Test
