Comfort-aire ODRB Century Leader in Heating and Cooling Comfort User Manual

: June 17, 2024
: Comfort-Aire

Table of Contents

Periodic Inspections
Operating Your Furnace
Maintenance Of Your Furnace
References
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USER’S INFORMATION MANUAL
Models: ODFB, ODRB, OUFB,
OLFB, OLRB
Oil-Fired Furnaces

Congratulations…
…you have one of the most modern oil furnaces made. Your unit has been carefully selected to keep you warm and comfortable during the winter months. It will deliver superb performance with only minimal help from you.
To keep your operating costs low and to eliminate unnecessary service calls, we have provided a few guidelines to help you with your furnace. These guidelines will help you understand how your furnace operates and how to maintain it so you can get years of safe and dependable service.
For your safety – read before operating
This appliance is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.
Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and oil control which has been under water.

Periodic Inspections

Your oil furnace is designed to give many years of efficient, satisfactory service. However, the varied air pollutants commonly found in most areas can affect longevity and safety. Chemicals contained in everyday household items such as laundry detergents, cleaning sprays, hair sprays, deodorizers, and other products which produce airborne residuals may have an adverse affect upon the metals used to construct your furnace.
It is important that you visually inspect the conditions of the burner and vent from the furnace. A flashlight will be useful for these inspections. Make one inspection prior to the beginning of the heating season and another during the middle. Should you observe unusual amounts of rust, flakes or other deposits, coatings, or corrosion, it is important that you call your authorized dealer at once to obtain a qualified service inspection. Even if no unusual rust or other deposits are observed, it is recommended that the furnace be inspected and serviced at least once per year by a qualified service technician.

WARNING
If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. For assistance or additional information, consult a qualified installer or service agency.
WARNING
Do not store combustible materials or flammable items, including gasoline and other flammable vapors and liquids, near the furnace, vent pipe, or warm air ducts.
The furnace area must not be used as a broom closet or for any other storage purposes. Never burn garbage or paper in the heating system. Such uses may result in actions that could cause property damage, personal injury, or death.
CAUTION
Installation and service must be performed by a qualified installer or service agency.

Operating Your Furnace

Lighting Instructions

STOP! Read the previous safety information.
Set the thermostat to the lowest setting. Turn off electric power to the appliance.
This appliance is equipped with an ignition device. Do not try to light the burner by hand.
Check the oil supply valve.
Turn on electric power to the appliance.
Set the thermostat to the desired setting.
The burner should light and the system should be controlled by the thermostat. If the appliance will not operate, call your service technician.

What to do if your unit is not heating properly
If your unit is operating but fails to provide complete comfort, check the following before calling for service:

Be sure the thermostat setting is correct.
Check to see if the filter is clean.
Be sure air can circulate freely throughout your home.
Do not block supply registers or return grilles with furniture or rugs.
And if you also have cooling…
Keep surface of the outdoor coil free from dirt, lint, paper, or leaves.
Check and clean indoor coil if necessary. (This check should be made at the start of each cooling season by your service technician.)

What to do if your unit fails to operate

Be sure the main switch that supplies power to the unit is in the “ON” position.
Replace any burned-out fuses or reset circuit breakers.
Be sure the thermostat is properly set.
If the unit still does not start, call your service technician.

Temperature Control
There are many types and styles of thermostats. Yours may look different from the one pictured in Figure 1, depending on the type of thermostat and whether cooling was installed with the system. However, almost all thermostats perform the same basic functions described in the following section. Comfort-aire
ODRB Century Leader in Heating and Cooling Comfort - Figer
1 Thermostat Operation (when you have heating only)
The thermostat is the only control you’ll need to set, as the furnace is completely automatic. Just set the temperature to the desired comfort level.
Thermostat Operation (when you have heating and cooling)
There are two switches located on the thermostat. One switch controls the heating and cooling functions. The other switch is for “FAN” operation, either continuous or automatic.
On the thermostat is the temperature range for the heating temperature and the cooling temperature desired.
To put the system into operation, push the switch to either “HEAT” or “COOL” position.
After you have chosen the type of operation you desire, move the thermostat dial or lever to select the temperature you would like the system to maintain.
Fan Operation
You may wish to increase your comfort by setting your system for continuous air circulation of the indoor air. The fan switch on the thermostat permits you to do this (see Figure 1).
With the switch in the “ON” position the fan will operate continuously. “AUTO” position gives fan operation only when the unit is in either heating or cooling.

Maintenance Of Your Furnace

There are routine maintenance steps you should take to keep your unit operating efficiently. This will assure longer life,
lower operating costs, and fewer service calls. The steps given in this publication are easy to follow and are not time consuming. Certain service and maintenance procedures require the skill of a trained service person who has specialized tools and training for their use. Please call your dealer for service. Personal injury can result if you are not qualified to do this work.
Cleaning/Replacing the Filter”’

WARNING
Always turn off the power to your furnace before removing the doors or filters. Failure to turn the power off could result in property damage, personal injury, or death.

It is very important to clean or replace the air filter regularly. A dirty air filter can sharply increase the operational costs of your unit…in some cases it can double the cost. The air filter should be inspected at least every 6 weeks and cleaned or replaced as required.
The unit may contain either a disposable filter or a permanent filter. The type of filter may be indicated on a label attached to the filter. If a disposable filter is provided, replace with the same type and size as the original filter. If a permanent filter is provided, clean filter and place back in furnace. To clean a permanent filter, shake filter to remove excess dirt and/or use a vacuum cleaner. Wash filter in soap or detergent water and replace after filter is dry.
If your air distribution system has a central return air filtergrille, you do not need a filter in your furnace. Be sure to clean the filter-grille as recommended above.
Dirty filters are the most common cause of inadequate heating or cooling performance. A clogged filter will not permit adequate airflow. This can cause heat exchanger failure or cooling coil freeze-up along with the accompanying costly service calls.
The dealer may have changed the filter size, so the information provided in Table 1 may not apply to your installation.
Always measure the original filter and replace with the same size and type.

Factory-Supplied Filters

Table 1

Models ODF and ODR are not equipped with factory-supplied filters.
The filters for these units are supplied in the field.

Upflow Units
To replace the filter in an upflow unit, refer to the following directions and Figure 2.
Side Return
To replace the filter in a furnace with an external filter rack or cabinet on either side of the furnace cabinet:

Turn off the power to unit.
The filter(s) may be removed by sliding toward the front.
Replace in a reverse procedure.

Bottom Return
To replace the filter in a furnace with a bottom return air:

Turn off the power to unit.
Remove lower front panel by lifting up and pulling out.
The filter(s) may be removed by sliding toward the front.
Replace in a reverse procedure.

Comfort-aire ODRB Century Leader in Heating and Cooling Comfort - Figer
2

Basement Units
To replace the filter in a basement unit (see Figure 3):

Turn off power to unit.
Remove lower rear panel by lifting up and pulling out.
The filter(s) may be removed by sliding out through the rear of the furnace. To reinsert, place filter on the two filter supports and slide into unit.

Restore power to the furnace after the door or panel has been replaced and check furnace for proper operation. If the unit does not operate, call your dealer for service.
Lubrication
Lubrication of the bearings in the circulating air blower motor and the combustion blower motor is not recommended.
Combustion and Ventilation Air
Adequate air must reach your furnace to provide for proper and safe operation. Any obstruction of this airflow can cause an unsafe condition which may result in death or permanent injury. Lethal carbon monoxide gas can be produced if combustion air is restricted.
Furnaces located in a closet, alcove, or utility room must have provision for adequate air supply by means of upper and lower grilles in the door, or by the introduction of outside air, or both. National codes and local code requirements are generally alike. However, local codes take precedence.
Venting and Furnace Support
Venting of this furnace must comply with our published instructions. If the installer has not followed these requirements, you should request the installer to comply as soon as possible.
Make sure all flue product materials external to the furnace are clear and free of any obstruction, slope upward, and have no holes or leaks.
It is important that the outside area where the vent terminates is kept clear of any obstructions which might block or impede the venting of the furnace.
Should any unusual conditions be observed during your inspections, call your authorized service dealer at once.
Return Air
Check that all return air duct connections are tight and sealed to the furnace cabinet and that all return air grilles or registers are located outside the space containing the furnace.

Due to ongoing product improvements, specifications and dimensions are subject to change and correction without notice or incurring obligations. Determining the application and suitability for use of any product is the responsibility of the installer.
Additionally, the installer is responsible for verifying dimensional data on the actual product prior to beginning any installation preparations.
Incentive and rebate programs have precise requirements as to product performance and certification. All products meet applicable regulations in effect on date of manufacture; however, certifications are not necessarily granted for the life of a product.
Therefore, it is the responsibility of the applicant to determine whether a specific model qualifies for these incentive/rebate programs.

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