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Troubleshooting: Burner runs continuously (too little heat).
Source
Check burner
combustion for
Combustion
CO2, stack tem
perature, and
smoke
Oil Pressure
ELO183DH Start-Up & Performance Check List
Job Name
Job Location
Installer
Unit Model No.
Electrical Connections Tight?
Supply Voltage
Blower Motor H.P.
Piping Connections Tight?
Flue Connections Tight?
Burner Model No.
Oil Pump Pressure [recommended minimum 140 psi]
Procedure
Low CO
less
2
than 10%.
High smoke
reading more
than a trace.
High stack tem
perature is more
_
than 550
F Net.
Inspect fire and check
oil pressure.
HEATING SECTION
Blower Motor Amps
All Valves Open?
Vent Clear?
Filter Clean & Secure?
Serial Number
Causes
Too much combustion air
Air leaks into heat exchanger
around inspection door, etc.
Excessive overfire draft
Incorrect nozzle assembly
depth
Dirty or plugged heat exchanger
Insufficient overfire draft
Incorrect nozzle assembly
depth
Too little combustion air
Low volume indoor blower air
Dirty heat exchanger
Dirty burner blower wheel
Dirty furnace air filters
Restricted or closed registers or
dampers
Partially plugged or bad nozzle
Oil pressure is too low
(less than 140 psi.)
Job No.
City
City
Serial No.
Draft Reading (recommended .03-.04 inches w.c.)
% CO
2
Smoke Test
Stack Draft
Net Stack Temp
External Static Pressure
Calibrated?
Heat Anticipator Properly Set?
Page 24
Correction
Reduce combustion air.
Correct cause of air leak.
Adjust barometric draft con
trol for correct draft.
Set to 1.13.
Clean heat exchanger.
Readjust burner.
Increase draft.
Set to 1.13.
Increase combustion air.
Check pump coupling for
wear / slippage.
Clean heat exchanger.
Clean burner blower wheel.
Clean or replace filter.
Readjust registers or damp
ers.
Replace nozzle.
Increase oil pressure to 140
psi.
Date
State
State
Serviceman
PROPER DRAFT
% O
ppm CO
2
Overfire Draft
Ambient Temp
Temperature Rise
THERMOSTAT
Level?
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