PMP
Oil Furnaces
–
Furnace Manual
6
670-000-003/1010
2
Prepare furnace and place in position
Inspect & prepare furnace
Remove furnace from carton
Remove the furnace from its shipping carton and inspect thoroughly.
Remove access panels to inspect the furnace interior.
Immediately file a claim with the transportation
company if you discover concealed damage.
Do not install or attempt to operate the furnace if the
heat exchanger, burner or controls have been
damaged. Immediately contact your furnace
supplier. Operating a damaged furnace could result
in severe personal injury, death or substantial
property damage.
Prepare burner
Remove the burner from its shipping carton and inspect thoroughly.
Read the burner manual and follow instructions for preparing and
installing the burner.
Install the correct nozzle for the required firing rate, using the burner
manual and the information on Section 12, p. 28 and 29 of this
manual. Follow the burner manual instructions for nozzle installation.
Verify the correct settings of electrodes after nozzle and burner oil
tube assembly are in place.
Openings in walls, floor & ceiling
General
Ensure that the finished door opening to the furnace room is large
enough to install and remove the furnace, water heater or any other
appliances in the room.
Before placing furnace in a closet or small room, cut all openings
required in floor, ceiling or walls for ducts and vent. This will simplify
the work and prevent construction dust from entering the furnace
heat exchanger.
Verify that all clearances to combustible construction
and for service accessibility will be met. The vent
must be no closer than 18 inches to any combustible
surface unless a type “L” double-wall vent pipe is
used or the vent is constructed per the requirements
of the NFPA 31. Provide a ventilated thimble per all
applicable codes where vent pipe passes through a
wall or ceiling. Failure to comply could result in
severe personal injury, death or substantial property
damage.
Duct locations and sizing
Verify that the size of the supply and return duct system is sufficient
for the application. The pressure drop through the duct system must
not exceed 0.2” water column.
Openings in walls, floor…
(continued)
The total drop through the duct system and air conditioning
condensing coil (if used) must not exceed 0.5” water column.
See suggested duct sizing in this manual. For more detailed sizing
information, refer to ACCA Manual D.
Return air duct
You must install a return air duct, sealed to the furnace, even if no
return manifold is used. The only exception is when the furnace is
located in a large unpartitioned room, such as a basement. (A room
whose volume is at least 50 cubic feet per 1,000 BTU/h input of all
appliances in the room is considered large). For large rooms, return
air may be taken directly at the furnace, without a return air duct. No
return air register should be within 20 feet of the furnace.
Cut the required opening for the return air duct in the wall (or floor or
ceiling) of the room before placing the furnace.
Install filter
Install return air filter of the size listed on Section 12, p. 28.
The filter rack is provided with the unit. You will need to attach the
filter rack to the furnace for all Model PMP.
Verify that the filter will be easily accessible for
removal after the furnace is in place.
When installing on
combustible flooring
, provide supply plenum
size and floor opening as given in Table 3.
Install furnace and burner
Place furnace
Place the furnace in the desired location. Measure clearances and
verify per page 3 of this manual.
Use a spirit level on the front and one side of the furnace. Make sure
each of the legs is firmly in contact with the floor.
Inspect combustion chamber
Inspect the combustion chamber. Verify it is in good condition and
correctly in position inside the heat exchanger. The burner opening
in the chamber must align with the burner heat exchanger opening.
The combustion chamber is constructed of ceramic
fiber materials See the WARNING information on
page 21 of this manual. Comply with these
instructions when handling any ceramic fiber or
fiberglass materials. Failure to adhere to these
guidelines could result in severe personal injury or
death.
Insert burner
Following the burner manual instructions, install the burner and its
gasket in the burner opening.
Secure the burner in place with the four nuts and washers provided.
Wire and pipe fuel to the burner as per the burner manual and this
manual.
Burner orientation
For a horizontal installation, you must turn the burner 90
o
, to the
normal position. Always keep the motor shaft in horizontal position.
