5
CHECK AIR FILTER:
Before
attempting to start your furnace, be
sure the furnace air filter is clean
and in place. See “Performing Rou-
tine Maintenance” section in this
manual. Then proceed as follows:
STEPS FOR STARTING
YOUR FURNACE
1. Open all warm air registers and
make sure that all return-air
grills are unobstructed.
2. If a humidifier is installed with
your system, open water supply
valve.
3. Make sure blower access door is
secured in place.
4. Set your room thermostat to
lowest temperature setting.
(See Fig. 5.)
5
5. Turn on electric power to
furnace. (See Fig. 6.)
6
6. Open oil supply valve.
(See Fig. 7.)
7
7. Check all connections to ensure
there are no leaks.
8. Set room thermostat to a tem-
perature slightly above room
temperature. This will auto-
matically signal the furnace to
start.
9. When the thermostat calls for
heat, power from the trans-
former energizes the fan control
board. The fan control energizes
the ignition control. The igni-
tion control will automatically
light the burner.
The electronic fan control auto-
matically turns on the blower
after 60 sec. Fan on control is
not adjustable. The air moved
over the heat exchanger by the
blower is warmed and passes
through the ducts to the room
registers.
This unit is equipped with con-
tinuous ignition control. If the
main burner does not ignite
within 30 sec from the call for
heat, the control will lock out.
The red button on top of the
control must be depressed for 3
sec in order to reset the control.
The control CANNOT be reset
from the room thermostat.
10. Set your thermostat to the tem-
perature that satisfies your com-
fort requirements. SUGGES-
TION: Setting the thermostat
back a few degrees and compen-
sating for the difference with
warmer clothing can make a big
difference in your fuel consump-
tion on extremely cold days. The
few degrees at the top of your
thermostat “comfort level” are the
most costly degrees to obtain.
When room temperature drops
below temperature selected on
the thermostat, the furnace will
be switched on automatically.
When room temperature reaches
the degree selected on the ther-
mostat, the furnace will be
switched off automatically.
Some thermostats have a FAN
mode with 2 selections, AUTO
and ON. When thermostat is set
to AUTO, the furnace blower
cycles on and off, controlled by
the thermostat. In ON mode,
the furnace blower runs contin-
uously. This keeps the tempera-
ture level in your home more
evenly balanced. It also contin-
uously filters indoor air.
NOTE:
Constant low-speed blower
operation can also be achieved by
turning on the constant blower
rocker switch located on side of
control box. Regardless of room
thermostat setting, blower will run
continuously in low speed to pro-
vide constant air circulation. If
constant blower rocker switch is
turned off, room thermostat will
control blower operation.
SHUTTING DOWN
YOUR FURNACE
Should you need to shut down your
furnace for service or mainte-
nance, you will need to turn the
furnace off. The following proce-
dures must be followed:
1. Set thermostat to lowest setting.
(See Fig. 8.)
8
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