Specifications
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. 










