TM 5-3895-374-24-2
Figure 8
Figure 9
Typical Schematic Gas Piping for Type C Burner Rating 2,500 MBH and larger modulating system.
OIL SUPPLY PIPING
The C burner is designed for use with light grade fuel oils
- commercial standard grades #2 or #1.
It is recommended that prior to installation all national,
local and other applicable codes be reviewed to ensure
total compliance.
A two pipe (separate suction and return line) system
must always be used. The fuel pumps are preset at the
factory for use only with a two pipe system. The pump
warranty will be voided if a one pipe system is used with
this burner. Rigid pipe connected directly to the pump
may cause excessive vibration. It is recommended that
the connection to the pump be of copper tubing,
complete with a vibration dampening loop, on both
suction and return lines. The pump warranty will be
voided if Teflon tape is used.
Do not install manual valves in the return line between
the pump and the tank unless required by a specific
code. If a manual valve is required, an automatic relief
valve must be installed across the manual valve to
ensure that oil will bypass directly back to the tank in the
event the manual valve is inadvertently left in the closed
position.
Use copper tubing with flare fittings or iron pipe on all type of
suction line oil filters. See page 10, Table 6 for recommended
Power Flame oil filters.
If the oil storage system has been used with fuel heavier than
#2 fuel oil, the entire system should be thoroughly cleaned and
flushed before starting up the new system.
Utilize fusible link and/or overhead anti-siphon valves as
applicable.
If iron pipe oil lines are used on underground tanks, swing
joints utilizing nipples and elbows must be used and joined
together, making certain the piping connections are tightened
as the tank settles. Keep swing joints in the suction and return
lines as close to the tank as possible. Underground tanks
should be pitched away from the suction line end of the tank to
prevent sediment from accumulating at the suction line
entrance. The suction line should be a minimum of 3" from the
tank bottom.
Before starting up the system, all appropriate air and oil leak
tests should be performed. Make certain that the tank
atmospheric vent line is unobstructed.
Refer to page 11, Fig. 11 for fuel pump oil piping connection
information. Further information relating to burner oil piping
can be found on page 10, Table 6 and
(page 3 - 961)
