1, Introduction; 2, Heat Loss; 3, Location Of Unit - Nordyne O4MD Installation, Operation And Maintenance Manual

IMPORTANT:
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE
1. INTRODUCTION
Please read these instructions completely and carefully
before installing and operating the furnace.
The furnace must be installed and set up by a qualified
contractor
MODEL O4MD-091A-12-F
Model O4MD-091A-12-F is an oil fired forced air multi-
positional furnace, with a nominal output capacity range
of 60,000 BTU/Hr. to 90,000 BTU/Hr. The O4MD-091A-
12-F furnace may be installed in the down-flow position,
as well as both horizontal positions.
M ODEL O4M D-140A-16-F
Model O4MD-140A-16-F is an oil fired forced air multi-
positional furnace, with a nominal output capacity range
of 91,000 BTU/Hr. to 128,000 BTU/Hr. The O4MD-140A-
16-F furnace may be installed in the down-flow position,
as well as both horizontal positions.
The O4MD-091A-12-F model is CSA listed, (NRTL/C) for
use with No. 1 (Stove) and No. 2 (Furnace) Oil. Please
refer to the tables in Appendix A for performance and
dimensional data.
The Model O4MD-140A-16-F furnace is listed with the
Canadian Standards Association, (CSA), and the Energy
Testing Laboratory of Maine, (ETLM), for use with No. 1
(Stove) and No. 2 (Furnace) Oil. Please refer to the
tables in the appendix for performance and dimensional
data.
I ,WARNINGI
DO NOT USE GASOLINE, CRANK CASE
OIL, OR ANY OIL CONTAINING GASOLINE.
The installation of the furnace and related equipment
shall be installed in accordance with the regulations of
NFPA No. 31, Installation of Oil Burnin,q Equipment, as
well as in accordance 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
Burnin.q Equipment, as well as in accordance with local
codes.
When installation or application questions arise,
regulations prescribed in the National Codes and Local
Regulations take precedence over the general
instructions provided with this installation manual. When
in doubt, please consult your local authorities.
All models are shipped assembled and pre-wired. The
furnace should be carefully inspected for damage when
being unpacked.
2. HEAT LOSS
The maximum hourly heat loss for each heated space
shall be calculated in accordance with the procedures
described in Manual J. titled, "Load Calculation"
published by the Air Conditioning Contractors of America,
or method suitable for local conditions or prescribed by
local codes. The calculation results obtained should be in
substantial agreement with, and not less than those
obtained using the procedure described in Manual J.
In Canada, the maximum hourly heat loss for each
heated space shall be calculated in accordance with the
procedures described in the manuals of the Heating,
Refrigeration and Air Conditioning Institute of Canada
(HRAI), or by method suitable for local conditions.
3. LOCATION OF UNIT
The furnace should be located such that the flue
connection to the chimney is short, direct and consists of
as few elbows 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. All models may be installed on combustible
floors.
Minimum installation clearances are listed in Table 2.
Sub-bases, for downflow installations are available for the
O4MD-091A-12-F and O4MD-140A-16-F series furnaces:
O4MD-091A-12-F: Order Part No. 29018.
O4MD-140A-16-F: Order Part No. 006000073.
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