Adams Condensing Oil-Fired Furnace - Manual (Page 17)

The furnace may be installed with a one-pipe system
with gravity feed or lift. The maximum allowabie 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 fine system is
complex because of the difficulty estimating the
pressure drop through each fitting, bend and
component in the line. In general, keep single line
systems short as possible. Two-stage oil pumps are
available for either the INTERbumer or Beckett
burner.
The following chart shows the allowable line lengths
(horizontal & vertical) for single and two stage oil
pumps. All distances are in feet.
In retrofit applications, where an existing oil line
system is in place, a vacuum check will help
determine the integrity of the existing oil line system.
The vacuum in a system should not exceed 6" Hg.
For a single pipe system, not 12" Hg. For a two-pipe
system.
To eliminate air leakage, fuel line should be a
continuous length from tank to burner and flare
fittings must be used on all connections. On threaded
connections, use pipe dope that is resistant to fuel oil
(Rector seal #5, Permatex or equivalent). Do not use
PTFE Joint tape.
OIL LINES
Copper Tubing OH Line Lengths fFeett
Srngte-Pipe Two-Pipe
Lift
Ft
3rö”
O.D
Tubing
O.D
Tubing
3/6'
O.D.
Tubing
'A‘
O.D.
Tubing
0 53 100 68 100
1 49 100 65 100
2
45 100 63 100
3 41 100 60 100
4 37 100 58 100
5 33 100 55 100
6 29 100 53 100
7 25 99 SO 100
8 21 83 48 100
g 17 68 45 100
10 13 52 42 100
12 — — 37 100
14 — — 32 100
16 — — 27 100
18 — — 22 88
For additional information, see the installation
information sheet included in the documents envelope
or affixed to the oil burner and R.W. Beckett Bulletin
(664S0S)
Solvina After Diio and Locating Oil Line Leaks
Bulletin (664822).
NOTE: ^th the iNTERburner AND Beckett oil
burners require the use of a bypass plug when
converting from single-pipe to two-pipe oil piping
systems. See burner manufacturer’s instructions.
X. CIRCULATING AIR & FILTERS
Ductwork - Air Flow
Duct systems and register sizes must be properly
designed for the CFM and external static pressure
rating of the furnace. Design the ductwork in
accordance with the recommended methods of “Air
conditioning Contractors of America” Manual D.
install the duct system in accordance with Standards
of the National Board of Fire Underwriters for the
installation of Air Conditioning, Warm Air Heating and
Ventilating Systems. Pamphlets No. 90A and 90B.
A closed return duct system must be used, with the
return duct connected to the furnace.
NOTE: Ductwork must never be attached to the back
of the furnace.
Flexible joints may be used for supply and return
connections to reduce noise transmission. To prevent
the blower from interfering with combustion air or
draft when a central return is used, a connecting duct
must be installed between the unit and the utility room
wall. Never use a room, closet, or alcove as a return
air chamber.
No furnace wili operate or heat properly if the
duct work it is attached to Is not sized or installed
correctly. Warm air runs should have dampers
installed so that they can be balanced room to
room. Dampers should be adjusted to provide a
minimum of 0.20 and a maximum of 0.50 inches
water column external static pressure in the warm
air plenum.
Keep in mind that 95% of all burner
and pump problems are caused by
three factors:
Air leak in tite fuel line, improperly
sized fuel lines and dirty fuel.
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