Carrier UPFLOW 58BTA - Manual (Page 9)

Figure 2
MAINTENANCE
This furnace should never be operated without an air
filter. Filters should be cleaned at least twice a year.
To avoid personal injury, make sure the electrical
supply power is "OFF" before servicing.
Limit Control Check:
After the furnace has been in operation for at least 15
minutes, restrict the return air suppiy by blocking the
filters or closing the return registers and allow the
furnace to shut down on high limit. The burner will shut
OFF and the main blower should continue to run.
Remove the restriction and the burner should come
back on in a few minutes.
ALWAYS KEEP THE MAIN OIL VALVE TURNED
OFF, IF THE BURNER IS SHUT DOWN FOR AN
EXTENDED PERIOD OF TIME.
WARNING
Before performing any service functions, unless
operations specifically require the power to be on,
make sure ail utilities are turned "OFF" upstream of
the appliance. Failure to comply with this warning
will cause a fire hazard and/or bodily harm.
For Year Round Air Conditioning;
The furnace is designed for use in conjunction with
cooling
equipment to provide year round air
conditioning. The blower has been sized for both
heating and cooling, however, the fan motor speed may
need'to be changed to obtain the necessary cooling air
flow.
Heating:
The blower speed is factory set to deliver the required
air flow at normal duct static pressure.
Cooling:
The blower speed may be adjusted in the field to
deliver the required air flow, for cooling application, as
outlined in Figure 6.
Constant Blower Switch:
This furnace is equipped with a constant iow speed
blower option. Whenever the room thermostat is not
calling for heating or cooling, the blower will run on low
speed in order to provide air circuiation. If this constant
blower option is not desired, the rocker switch on the
side of the controi box may be used to "turn off" the
constant speed.
Periodic oiling of the blower motor may be necessary.
Check for instructions on the inside of your blower
compartment door.
To maintain proper performance, the oil burner nozzle
must be replaced once a year. Contact your dealer
serviceman if you are unsure of this procedure.
The procedure for nozzle installation and/or
replacement is outlined in the oil burner instruction
manual which came with the furnace. For ease of
maintenance, the oiling procedure for the burner motor,
as outlined in the burner manual, should be performed
at this time.
After replacement of the nozzle, the burner should be
adjusted in accordance with the "COMBUSTION
CHECK" section of the instruction.
Ordinarily, it is not necessary to clean the heat
exchanger or flue pipe every year, but it is necessary to
have your oil burner serviceman check the unit before
each heating season to determine whether cleaning or
replacement of parts is required.
If cleaning is necessary, the following steps should be
performed:
1. Turn "OFF" all utilities upstream of the furnace.
2. Disconnect the flue pipe.
3. Remove the collar on the flue connection.
ISSUE 9413
20142901 918