Oil Tank; Piping Installation; Electrical Connections - Nordyne 04MD-091A-12-FA Installation, Operation And Maintenance Manual

Table 3: Minimum Chimney Base
Temperatures (°F)
Chimney Height (ft.)
Nozzle
Chimney Thermal Resistance < R6
0.50 300 1400 535 725
0.65 275 1340 430 535
0.70 270 1330 405 505
0.75 260 1320 380 475
0.85 250 1300 355 430
1.00 225 1300 365 430
Chimney Height (ft.)
Nozzle _
Chimney Thermal Resistance > R6
0.50
0.65
0.70
0.75
0.85
1.00
< - less than,
185 200 220 250
175 185 205 220
175 185 195 215
175 185 195 210
165 185 195 205
165 185 195 205
>-greaterthan
OIL TANK
Oil storage tanks must be selected and
installed in compliance with applicable
codes; in the United States, NFPA 31,
Standard for the Installation of Off Burn-
ing Equipment, Chapter 2. and in Can-
ada, CAN/CSA-B139, Installation Code
for Oil Burning Equipment, Section 6.
Observe all local codes and by-laws.
In general, the oil tank must be properly
supported and remain stable in both
empty and full condition. The oil tank
must be fitted with vent and supply pipes
to the outdoors. Refer to the above-
mentioned codes for sizing. The vent
pipe must be no tess than 1¼ inches
I.P.S., and terminate with an appropriate
vent cap in a location where it will not be
blocked. The fill pipe must be no less
than 2 inches I.P.S., and terminate with
an appropriate cap in a location where
debris will not enter the fill pipe during oil
delivery.
If located indoors, the tank should nor-
mally be in the lowest level, (cellar,
basement, etc.). It must be equipped
with a shut-off valve at the tank outlet
used for the oil supply. The oil tank must
be located as to not block the furnace /
room exit pathway. Observe all clear-
ances specified in the above-mentioned
codes.
PIPING INSTALLATION
In the United States, NFPA 31, Standard
for the Installation of Oil Burning Equip-
ment, Chapter 2.
In Canada, the entire fuel system should
be installed in accordance with the re-
quirements of CAN/CSA B139, and local
regulations. Use only approved fuel oil
tanks piping, fittings and oil filters.
Ensure that all fittings used in a copper
oil line system are high quality flare fit-
tings. Do not use compression fittings.
Do not use Teflon tape on any fittings.
Pressurized or gravity feed installations
must not exceed 3 PSIG. Pressures
greater than 10 PSlG may cause dam-
age to the shaft seal. If the height of the
oil stored in a tank above the oil burner
exceeds 11½ feet, it may be necessary
to use a pressure-regulating device ap-
proved for this purpose.
The furnace may be installed with a one-
pipe system with gravity feed or lift. The
maximum allowable lift on a single line
system is 8 feet. Lift should be measured
from the bottom (outlet) of the tank, to
the inlet of the burner. Sizing a single
line system is complex because of the
difficulty estimating the pressure drop
through each fitting, bend and compo-
nent in the line. In general, keep single
line systems short as possible. The
following chart shows the allowable line
lengths (horizontal + vertical) for single
and two-line oil piping systems. All dis-
tances are in feet.
Table 4: Oil Lines
Copper Tubing Oil Line Length (Feet)
Single-Pipe OD Two-Pipe OD
In retrofit applications, where an existing
oil line system is in place, a vacuum
check wilt help determine the efficacy of
the existing oil line system The vacuum
in a system should not exceed 6" Hg. for
a single pipe system, nor 12" Hg. for a
two-pipe system.
NOTE: The oil burner requires the use of
a bypass plug when converting from
single-pipe to two-pipe oil piping sys-
tems. See burner manufacturer's instruc-
tions.
All fuel systems should include an oil
filter between the fuel oil storage tank
and the oil burner. For best results, in-
stall the oil filter as close to the burner as
possible. When using an indoor oil tank,
the oil filter may be installed at the tank
downstream from the shut-off valve. If
firing the furnace under the 0.65 gph
rate, a 7 to 10 micron line filter should be
installed as close to the oil burner as
possible.
ELECTRICAL CONNECTIONS
The furnace is listed by the Canadian
Standards Association (CSA). It is fac-
tory wired and requires minimal field
wiring. In the United States, the wiring
must be in accordance with the National
Fire Protection Association NFPA-70,
National Electrical Code, and with local
codes and regulations. In Canada, all
field wiring should conform to CAN/CSA
C22.1 Canadian Electrical Code, Part 1,
and by local codes, where they prevail.
The furnace should be wired to a sepa-
rate and dedicated circuit in the main