PLB
Oil Furnaces
–
Furnace Manual
670-000-001/0204
3
1
Prepare furnace location
Pre-installation checklist
Verify code compliance
Local, state, provincial, and national codes, laws, regulations
and ordinances
NFPA-31, Installation of Oil-Burning Equipment
National Electrical Code
All local codes and/or regulations take precedence over the
instructions in this manual and should be followed accordingly.
PLB furnaces, their burners and controls met safe
lighting and other performance criteria when furnace
underwent tests specified in Underwriters Laboratories
Standard UL727.
Check location and furnace specifications
Furnace heating capacity
Space is large enough to provide required clearances
Verify the installation will meet the requirements of this manual :
Clearances (page 3)
Combustion/ventilation air openings (page 4)
Supply air duct (page 7)
Return air duct (page 7)
Vent system (page 10)
Fuel oil piping (page 11 plus burner manual)
Electrical connection (page 12)
Clearances
Minimum clearance to combustible materials
Install the furnace, ductwork and vent such that no combustible
surface is closer than listed in Table 1.
Flue pipe clearances must take precedence over
jacket clearances (listed below).
Service accessibility clearances
Provide no less than the minimum clearances given in Table 1 to
ensure the furnace can be properly operated, serviced and
maintained.
Always apply whichever clearance is
LARGER
– combustible
construction or service accessibility.
Flooring and foundation
Flooring
PLB furnaces are approved for installation on combustible flooring,
but must never be installed on carpeting.
Do not install furnace on carpeting even if foundation
is used. Fire can result, causing severe personal
injury, death or substantial property damage.
Foundation
Provide a solid brick or minimum 2 inches thick concrete
foundation pad if any of the following is true :
x
the floor can become flooded.
x
the furnace mounting area is not level.
Residential garage installations
Take the following special precautions when installing the furnace in
a residential garage. Il the furnace is located in a residential garage :
x
Mount the furnace a minimum of 18 inches above the floor
of the garage.
x
Locate or protect the furnace so it cannot be damaged by a
moving vehicle.
Table 1
Minimum
clearances
NOTICE
NOTICE
WARNING
Location
Left or right
6”
Other side left or right
1”
Back
Furnace
6”
Furnace or plenum
1”
Horizontal warm air duct within 6 feet of furnace
1”
Bottom
Furnace (combustible floor)
0”
Horizontally or below flue pipe
9”
Vertically above flue pipe
9”
Front
From burner
24”
Minimum clearances – combustion materials (inch)
Sides
Top
Flue pipe
Application
