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IMPROPER INSTALLATION MAY CRE-
ATE A CONDITION WHERE THE OP-
ERATION OF THE PRODUCT COULD
CAUSE PERSONAL INJURY OR
PROPERTY DAMAGE.
IMPROPER INSTALLATION, ADJUST-
MENT, ALTERATION, SERVICE OR
MAINTENANCE CAN CAUSE INJURY
OR PROPERTY DAMAGE. REFER TO
THIS MANUAL FOR ASSISTANCE OR
ADDITIONAL INFORMATION, CON-
SULT A QUALIFIED INSTALLER, SER-
VICE AGENCY OR THE FUEL SUP-
PLIER.
THIS PRODUCT MUST BE INSTALLED
IN STRICT COMPLIANCE WITH THESE
INSTALLATION INSTRUCTIONS AND
ANY APPLICABLE LOCAL, STATE,
AND NATIONAL CODES INCLUDING
BUT NOT LIMITED TO: BUILDING,
ELECTRICAL AND MECHANICAL
CODES.
The furnace area must not be used as a
broom closet or for any other storage
purposes, as a fire hazard may be cre-
ated. Never store items such as the fol-
lowing on, near or in contact with the
furnace:
1. Spray or aerosol cans, rags,
brooms, dust mops, vacuum clean-
ers or other cleaning tools.
2. Soap powders, bleaches, waxes or
other cleaning compounds; plastic
items or containers, gasoline, kero-
sene, cigarette lighter fluid, dry
cleaning fluids, or other volatile flu-
ids.
3. Paint thinners or other painting ma-
terials and compounds.
4. Paper bags, boxes, or other paper
or cardboard products.
Never operate the furnace with the
blower door removed. To do so could
result in serious personal injury and/or
equipment damage.
DO NOT USE GASOLINE, CRANK-
CASE OIL, OR ANY OTHER OIL
CONTAINING GASOLINE AS A
FUEL FOR THIS FURNACE.
INTRODUCTION
Please read these instructions com-
pletely and carefully before installing and
operating the furnace.
The furnace must be installed and set up
by a qualified contractor.
Model P3DHX12F08001 is an oil fired
forced air multi-positional furnace, with
an output capacity range of 60,000
BTU/Hr. to 90,000 BTU/Hr. Model
P2DHX16F12001 is an oil fired forced air
multi-positional furnace, with an output
capacity range of 91,000 BTU/Hr. to
128,000 BTU/Hr. These models may be
installed in the down-flow position, as
well as both horizontal positions.
Model P2LBX16F14501 is a rear-breech
lowboy model with an output range of
130,000 to 143,000 BTUH. Model
P4LBX20F19001 is a rear-breech low-
boy model with an output range of
168,000 to 188,000 BTUH.
All models are listed with the Canadian
Standards Association, (CSA), and com-
ply with the standards of both the United
States and Canada for use with No. 1
(Stove) and No. 2 (Furnace) Oil.
In the United States, the installation of
the furnace and related equipment shall
be installed in accordance with the regu-
lations of NFPA No. 31, Installation of Oil
Burning Equipment, as well as in accor-
dance with local codes.
In Canada, the installation of the furnace
and related equipment shall be installed
in accordance with the regulations of
CAN/CSA - B139, Installation Code For
Oil Burning Equipment, as well as in
accordance with local codes.
When installation or application ques-
tions arise, regulations prescribed in the
National Codes and Local Regulations
take precedence over the general in-
structions provided with this installation
manual. When in doubt, please consult
your local authorities.
All P*DHX models are shipped assem-
bled, pre-wired, ready for down-flow op-
eration. P*DHX furnace models are air
conditioning ready. The furnace should
be carefully inspected for damage when
being unpacked.
The P2LBX16F14501 model is shipped
assembled, pre-wired, and ready for
lowboy furnace applications. The
P2LBX16F14501 model is air condition-
ing ready.
The P4LBX20F19001 is shipped in two
pieces, a furnace section and a blower
section, and must be assembled at the
installation site. Some field wiring is re-
quired. The P4LBX20F19001 is shipped
as a heating only furnace; however, air
conditioning may be added with the addi-
tion of field-installed controls.
HEAT LOSS
To determine the correct furnace and
firing rate for an application, it is neces-
sary to calculate the maximum hourly
heat loss of the building based on local
design conditions. In new construction,
the heat loss should be calculated on a
room-by-room basis to enable proper
sizing of the trunk and branch ductwork.
In retrofit applications, a building shell
(overall) heat loss calculation may be
used.
In the United States, Manual J.
titled,
"Load Calculation
" published by the Air
Conditioning Contractors of America,
(ACCA), describes a suitable procedure
for calculating the maximum hourly heat
loss.
In Canada, the maximum hourly heat
loss may be calculated in accordance
with the procedures described in the
manuals of the Heating, Refrigeration
and Air Conditioning Institute (HRAI), or
by other method prescribed by authori-
ties having jurisdiction that are suitable
for local conditions.
LOCATION OF UNIT
The furnace should be located such that
the flue connection to the chimney is
short, direct and consists of as few el-
bows as possible. When possible, the
unit should be centralized with respect to
the supply and return air ductwork. A
central location minimizes the trunk duct
sizing.
Minimum installation clearances are
listed in Table 1.
NOTE: The recommended installation
clearances do not necessarily take into
consideration the clearances necessary
to replace the air filter or perform other
routine maintenance.