PLB
Oil Furnaces
–
Furnace Manual
670-000-001/0204
17
7
Start up
Follow information below to prevent severe personal
injury, death or substantial property damage :
x
Do not use gasoline, crankcase drainings or any oil
containing gasoline. See burner manual for proper
fuel oil.
x
Do not attempt to start burner when excess oil has
accumulated, when unit is full of vapor or when
combustion chamber is very hot.
x
Do not start burner unless collector box, breeching
and burner mounting plate are secured in place.
x
Never burn garbage or paper in the furnace.
x
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 : -0.01 to –0.02 inches water column draft in furnace
combustion chamber.
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. Complete testing of the burner cad cell control using the
instructions in the burner manual.
To shut down furnace
1. Set the room thermostat to its lowest setting.
2. Turn off the disconnect switch in 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.
8
Checkout procedure
Furnace selection
1. Heat loss ............................... BTU/h at ............
o
F outdoor
design temperature.
2. Furnace
model .......................................................................
output .......................... BTU/h.
3. Burner
model
........................................................................
nozzle : ........... gph ................
o
type............... .
4. Burner pump pressure ........................................ psig.
Furnace installation
5. Furnace leveled and all legs in contact with floor?
6. Return and supply ducts securely attached to furnace?
7. Fuel filter and fuel lines installed per burner manual and
inspected?
8. Furnace and burner wired per wiring diagram?
9. 120 VAC wiring : type ................ size ................ AWG.
DANGER
WARNING
