TMP
Oil Furnaces
–
Furnace Manual
22
670-000-004/1010
10
Service and maintenance
(continued)
To lubricate and inspect blower motor
DO NOT lubricated the oil burner motor or the direct
drive blower motor as they are permanently
lubricated.
Clean blower wheel – Vacuum dust from blower wheel blades and
surrounding area.
To clean heat exchanger
The heat exchanger must be cleaned and inspected
at least once each year. Operating the furnace with
a fouled or leaking heat exchanger could result in
severe personal injury, death or substantial property
damage.
The combustion chamber contains ceramic fiber
materials. Wear a NIOSH-approved respirator while
cleaning the furnace and follow WARNING on page
21 for proper handling.
1. Remove the burner and mounting plate.
2. Inspect the heat exchanger using a mirror inserted through the
burner opening.
3. Using a brush on a flexible handle, loosen the soot on the inside
of the heat exchanger.
4. Remove the soot with a vacuum. Be careful not to damage the
combustion chamber while cleaning the heat exchanger.
5. Remove the heat exchanger cleanout covers of flue collector
box. Using a brush on a flexible handle, loosen the soot from the
heat exchanger surfaces. Remove as much soot as possible
using a vacuum.
6. Replace cleanout covers.
7. Inspect combustion chamber and replace with a new one if
chamber is damaged in any way.
8. Re-install burner and mounting plate.
Obtain gas-tight seal at burner flange and cleanout
plates to prevent possible flue gas leakage and
carbon monoxide emissions, leading to severe
personal injury or death.
Inspect vent system
Thoroughly inspect the entire vent system at least annually,
including horizontal vent pipe and chimney or vertical vent. Ensure
vent system is repaired or replaced if necessary before placing
furnace in operation.
Oiled-bearing burner motors
The burner may need to be lubricated if motor is equipped with oiling
cups. Refer to burner manual for specific instructions. If instructed,
apply a few drops only of S.A.E. 20 detergent oil (never use
household oils). Do not attempt to “fill up” the oil cup. Over-oiling can
damage the motor.
Optional Blocked vent shut off (BVSO) cleaning
For continued safe operation, the Blocked Vent Shut Off System
(BVSO) is required to be inspected and maintained annually by a
qualified agency.
1.
Disconnect the power to the appliance;
2.
Remove the two screws holding on the BVSO assembly
cover;
3.
Remove the cover;
4.
Remove the two screws holding the thermal switch to the
assembly base;
5.
Without removing the electrical wires, remove the thermal
switch and remove any build-up from the thermal switch
surface;
D
Do not dent or scratch the surface of the
thermal switch. If the thermal switch is
damaged, replacement is required.
6. Clear and remove any build-up or obstruction inside the
heat transfer tube;
7.
Re-mount the thermal switch to the assembly base;
8.
Re-attach the assembly cover with the screws removed in
step 2;
9.
Re-establish power to the appliance.
Annual start up
Follow information below to prevent severe personal
injury, death or substantial property damage:
•
Do not use gasoline, crankcase drainings or any oil
containing gasoline. See burner manual for proper
fuel oil.
•
Do not attempt to start burner when excess oil has
accumulated, when unit is full or vapor or when
combustion chamber is very hot.
•
Do not start burner unless collector box, vent and
burner mounting door are secured in place.
•
Never burn garbage or paper in the furnace.
•
Never leave combustible material around it.
To start furnace
1. Factory burner adjustment and settings may not be suitable for
specific job conditions. Refer to burner manual for burner start
up, adjustment and checkout procedures.
2. Set room thermostat to call for heat.
3. Refer to burner manual for start up.
4. The furnace blower will delay for a short period after burner
starts, until the Limit/Fan switch senses air temperature above
the fan ON setting.
5. Set room thermostat to its lowest setting. Burner should turn off.
6. Furnace blower will continue to run until the Limit/Fan switch
senses air temperature below the fan OFF setting.
7. Set the room thermostat to call for heat again. Allow furnace to
heat to design temperature. Then adjust burner for correct
combustion, using combustion test equipment. Adjust burner for:
Draft: -0.01” to –0.02” water column draft in furnace combustion
chamber.
CO
2
: between 10% and 11 ½ %, with 0 smoke.
Make final burner adjustments using combustion test
equipment to ensure proper operation.
8. Check furnace and duct system for proper operation and
conditions.
9. Inspect vent system for proper operation.
10. To set Limit/Fan switch:
The blower operates until the air temperature drops below the
fan OFF setting. If the air at the supply registers is too warm at
blower start up or shut down , lower the fan OFF and ON
settings on the Limit/Fan switch.
To check operation of the limit switch, slide a piece of cardboard
into the furnace filter slot. After a few minutes of operation (not
more than 5 minutes), the burner should shut off (limit switch
open). The blower will operate until the furnace cools down.
Remove cardboard when finished.
11. Complete testing of the burner cad cell control using the
instructions in the burner manual.
