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flexible plastic spout. D ONOTOVER-
LUBRICATE. Excess oil mayresultin
premature electric m otor failure.
Inspect theblower fan.Clean it ifneces-
sary.
Oil Burner M aintenance:
Follow the in-
structions oftheoilburner manufacturer.
(Seeoil burner manufacturer's
instruc-
tionssupplied with furnace). The oil
burner n ozzle s hould bereplaced annu-
ally. W erecommend thattheoilfilterbe
changed onanannual basis.
Theventing system should be cleaned
andinspected forsigns of deterioration.
Replace p ittedor perforated ventpipe
andfittings. Thebarometric draft r egula-
torshould o pen and close freely.
All electrical c onnections shouldbe
checked to ensuretight connections.
Safety controls s uchas the highlimit
controls s hould betested forfunctional-
ity.Thefancontrol functions should be
checked t o ensure thatallfan speeds
areoperating properly.
OPERATING INSTRUCTIONS
Before Lighting
Open all supply and return air registers
and grilles.
Open all valves in oil pipes.
Turn on electric power supply
To Light Unit
Set the thermostat above room tempera-
ture to call for heat. The burner should
start. NOTE:
It may be necessary
to
press the RESET button on the primary
combustion control relay.
There wilt be a fan on time delay before
the circulating
fan
is energized.
The
Honeywell 8T9103 has a fixed fan delay
on time of 30 seconds after the burner
ignites. The United Technologies
1158-
120 has an adjustable fan on time that is
set by selecting the dipswitch combina-
tion displayed
in Chart 1. This fan on
delay can be set at 30, 60, 90 or 120
seconds.
Set the thermostat below room tempera-
ture. The oil burner should stop.
The air circulation blower wilt continue to
run until the time off setting selected on
the electronic fan timer control times out.
The Honeywell
ST9103 has an adjust-
able fan off time of 60, 90, 120 and 150
seconds that is set by selecting
a dip-
switch combination on the control board.
Similarly
the
United
Technologies
1158-120 has an adjustable fan off time
of 2, 3, 4 or 6 minutes The fan timer con-
trol adjustments
may be altered if the air
at the room registers
is uncomfortably
high upon blower start up or shutdown.
The necessary
adjustments
to the fan
control settings should be determined
by
measuring
the temperature
of the air in
the supply air take-off, or within the first
few inches of the supply air trunk. The
side mid point of the transition is usually
ideal,
providing
that the
thermometer
probe
is beyond
the
"line
of sight"
wherein false readings from radiant heat
could be observed. The system tempera-
ture rise, the difference
in temperature
between the supply air and return air, will
typically range between 65°F and 70°F.
To
check
the
operation
of the
limit
switch, shut off power to the furnace.
Temporarily
remove
the
neutral
wire
from the direct drive blower motor. Re-
store the electrical
power to the furnace
and set the thermostat above room tem-
perature. After three or four minutes of
burner operation, the limit control should
turn the burner off. When the limit func-
tion test is complete, shut off electrical
power to the furnace, replace the neutral
wire to the blower fan motor, and then
restore power. The blower fan will start
up immediately.
Once the temperature
has dropped
and the limit control
has
reset, the fan will operate until the fan off
time is achieved. The oil burner wilt then
resume operation
and continue until the
thermostat is satisfied.
Restore the ther-
mostat setting to a comfortable tempera-
ture.
To Shut Down Unit
Set the thermostat to the lowest possible
setting.
Set the manual switch (if installed) in the
Electrical Power Supply Line to "OFF".
NOTE: If the furnace is to be shut down
for an extended period of time, close the
oil supply valve to the oil burner.
I_WARNINGI
DO NOT ATTEMPT
TO START
THE
BURNER
WHEN
EXCESS
OIL
HAS
ACCUMULATED,
WHEN
THE
FUR-
NACE
IS
FULL
OF
VAPOUR,
OR
WHEN THE COMBUSTION
CHAMBER
IS VERY
HOT. NEVER
BURN
GAR-
BAGE OR PAPER
IN THE FURNACE,
AND NEVER LEAVE PAPER OR RAGS
AROUND THE UNIT.
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