Olsen BML-60BRBU2 - User Manual

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BML

(Lowboy Model)

BMLV

(Lowboy Model with ECM)

Series B

Oil Fired Warm Air Furnaces

INSTALLATION, OPERATION & MAINTENANCE MANUAL

P/N 30149, Rev. G [12/15/2016]

ECR International

2210 Dwyer Avenue, Utica NY 13501

web site: www.ecrinternational.com

Main Page

Questions and Answers

Q
qburnsNov 24, 2025
What causes excessive fuel oil consumption in my Olsen BML-60BRBU2?
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  Lisa NealNov 24, 2025
  Excessive fuel oil consumption in your Olsen Furnace can stem from several factors: * System temperature rise being too high: The system temperature rise should not exceed 75°F. Check for clogged air filters and dirt buildup on the blower fan. If necessary, increase the blower fan speed. * Poor “fan off” delay timing: The fan may be stopping too soon. Check the “fan off” delay timing setting, using a duct thermometer to ensure the fan shuts off at 90° - 100°F. Adjust the dip switch settings to achieve this temperature. * Fuel oil leak: Inspect the fuel oil line for leaks and repair or replace it if necessary. * Stack temperature being too high: Stack temperatures should typically range from 400° to 500°F. Check the draft regulator, ensuring it's set to -0.02 in. w.c. * Improperl...
M
Mary GardnerNov 27, 2025
How to fix an Olsen BML-60BRBU2 Furnace that will not warm home to desired temperature?
- J
  jonesdouglasNov 27, 2025
  If your Olsen furnace isn't adequately warming your home, consider these potential causes: * Blocked airflow or a dirty air filter: Clean or replace the air filter. * Thermostat adjustments or location: Ensure the thermostat's heat anticipator setting aligns with the measured amperage draw, increasing it if necessary. Relocate the thermostat if it's affected by drafts, sunlight, or ductwork. * Insufficient airflow: Check all dampers, opening any that are closed, including registers in unused rooms. Verify the system temperature rise; if it's too high, increase the blower fan speed. * Defective high limit control: Test the high limit function of all limit switches, using a duct thermometer to verify the limit control's accuracy. Check for airflow obstructions around the limit switc...