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c. Open the burner air shutter to get 1.5% CO
less than the previous reading noted in ''2''
and take a smoke test on this condition.
d. The new smoke reading should give you a
ZERO smoke reading.
7. A 10 micron (or less) oil filter should be installed
as close to the burner as possible with all oil
burners and is essential on the lower firing rate
burners.
We recommend the use of a low-
pressure drop oil filter greater than the fuel pump
gear capacity.
8. On a new installation the air entrapped in the oil
line leading from the tank to the nozzle must be
thoroughly purged in order to prevent excessive
after drip. The oil pump is provided with a special
fitting that will enable you to purge any air
between the tank and oil pump.
procedure for performing this operation is as
follows:
a. Place a piece of clear plastic 1/4" dia. tubing
over the purge fitting on the oil pump.
b. Start the oil burner, then open the purge fitting
and allow the burner to run until the purge
tube is completely free of air bubbles.
c. At this point tighten the purge fitting which will
allow the oil to run to the nozzle and fire the
burner. (If the purging takes longer than 15
seconds and no flame has been established
the burner will stop. Push the reset button on
top of Primary Control to restart burner).
For detailed information on operation of primary
control refer to instructions included with furnace
or burner.
9. After all the set up procedures mentioned above
have been completed, the burner should be
allowed to operate and an inspection mirror should
be used to observe the flame pattern at the tip of
the nozzle. Any irregularities such as burning to
one side or pulsating flame patterns should be
corrected by changing the nozzle.
3)
FAN ADJUSTMENT CHECK
This furnace is equipped with a 4 speed direct drive
motor to deliver a temperature rise within the range
specified on the rating plate, between the return and
supply pressure at the external duct static pressure
noted on the rating label.
Adjust the fan speed ACCORDING TO THE OIL
INPUT SELECTED so that the temperature rise is
within the rise specified on the rating plate (see table #
3). Consult the wiring diagram for speed changes on
the direct drive motor.
10
To adjust fan OFF time, the DIP switches on the
2
control board adjusted to obtain the desired timing
(See figure # 3).
DNS-0378 Rev. A
4)
The proper
After the furnace has been in operation for at least 15
minutes, restrict the return air supply 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.
For year round air conditioning:
The furnace is designed for use in conjunction with
cooling
conditioning.
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
airflow at normal duct static pressure.
Cooling:
The blower speed may be adjusted in the field to
deliver the required airflow, for cooling application, as
outlined in table # 4.
Constant Blower Switch:
This furnace is equipped with a constant low 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 circulation. If this
constant blower option is not desired, the rocker
switch on the side of the control box can be used to
"turn off" the constant speed.
FIGURE # 3
Delay off setting
1
2
1
2
1 2
1 2
2
60 Sec.
60 Sec.
90 Sec.
90 Sec.
Sec.
BOUTONS
DIP switchs
DIP
LIMIT CONTROL CHECK
equipment
to
provide
The blower has been sized for both
1
2
1
2
1 2
1
120 Sec.
120 Sec. 150 Sec.
150
year
round
air
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