Nordyne O4MD Installation, Operation And Maintenance Manual page 5

TABLE 1.: GENERAL SPECIFICATIONS
INPUT OUTPUT
FURNACE
USGPH BTU/HR.
O4MD-091A-12-F
O4MD-140A-16-F
0.50 60,000
0.65 78,000
0.75 90,000
0.75 91,000
0.85 101,000
1.00 117,000
1.10 128,000
NOZZLE
(Delavan)
0.50 / 60°A
0.65 / 60°A
0.75 / 60°A
0.75 / 80°A
0.85 / 80°A
1.00 / 60°A
1.10 / 70°A
BECKETT AF BURNER
BURNER
MODEL
AF76BO
AF76XN
BURNER
HEAD
F0
F3
AF76XN F3
AF76YB F6
AIR FILTER
20X20X1
20X20X1
Table 2: Clearances
Location
Model: O4MD-091A-12-F
Clearance to Combustibles
Top
Bottom
S/A Plenum
Rear
Sides
Front
Flue Pipe
Enclosure
Model:
Downflow
0 in.
0 in. *
1 in.
1 in.
1 in.
6 in. ***
18 in. **
Closet
Horizontal
6 in.
1 in.
1 in.
1 in.
1 in.
24 in.
18 in. **
Location
O4MD-140A-16-F
Clearance to Combustibles
Top
Bottom
S/A Plenum
Rear
Sides
Front
Flue Pipe
Enclosure
Horizontal Duct
1 in. 1 in.
within 6' of unit
Downflow
0"
1 in.*
1 in.
1 in.
1 in.
16 in. ***
9 in.
Closet
Horizontal
3 in.
1 in.
3 in.
1 in.
0 in.
24 in.
9 in.
Alcove
* Use sub-base.
** In Canada - 9 inches.
*** The above recommended installation clearances do
not take into consideration the clearances necessary to
replace the air filter or perform other routine
maintenance. 24 inches minimum recommended for
servicing.
DOWNFLOW INSTALLATION
The furnace has been assembled for installation in the
down-flow position. If the furnace is to be installed in the
down-flow position on a combustible floor, use the
appropriate sub-base.
Maintain all other clearances to combustibles as outlined
in Table 1. Suggestion; as a measure to prevent fuel oil
from accumulating in locations other than the fire pot, as
could be the case in the event of nozzle drip, install the
furnace with an approximate 2 degree slope from the oil
burner casing towards the fire pot. Use shims made of
noncombustible material.
HORIZONTAL INSTALLATION
Although the furnace is assembled and shipped ready for
installation in the down-flow position, the furnace may be
installed in either of the horizontal positions; warm air
discharging left or warm air discharging right by following
these steps:
O4MD-091A-12-F Model:
1. Rotate the furnace 90 ° to the desired position.
2. Remove the three nut and washer sets fastening the
oil burner assembly to the furnace. Rotate the oil
burner assembly to be in the upright position.
(Ignition transformer and primary control relay control
should be on top).
3. Re-align the oil burner assembly to the combustion
chamber (fire-pot), then secure into place with the
three nut and washer sets.
4. Ensure that the limit control is in the upper position.
See Fig. 6, page 16.
5 153B0801