TMP
Oil Furnaces
–
Furnace Manual
670-000-004/1010
17
Gasket for overfire
pressure reading
7
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 of vapor or when
combustion chamber is very hot.
•
Do not start burner unless collector box, venting and
burner mounting plate 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. Start burner as described in burner manual.
4. The furnace blower will delay for a short time 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: -0.00” to +0.035” water column draft in furnace
combustion chamber.
For pressure reading, replace the sight glass by the gasket
supply with the appliance.
After the verification, put back in place the sight glass.
See Figure 3.
CO
2
: between 10% and 11½ %, with 0 smoke.
To start furnace
(continued)
Make final burner adjustments using combustion test
equipment to assure 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 shutdown, 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. Perform complete test of the burner cad cell control as per the
burner manual instructions.
To shut down furnace
1. Set the room thermostat to its lowest setting.
2. Turn off the disconnect switch on the 120-VAC power line to the
furnace.
3. If the burner will be shut down for an extended time, tightly close
all oil valves.
4. Refer to burner manual for any additional instructions.
Figure 6
DNS-1092 Rev. A
