American Standard PFWF071A93ABA Installation Manual page 43

▲ ▲
!
PIPE DOPE AND TEFLON TAPES ARE NOT TO
BE USED ON ANY DIRECT OIL CONNECTION TO
THE FUEL PUMP. FAILURE TO FOLLOW THIS
WARNING COULD RESULT IN SERIOUS INJURY,
DEATH, OR PROPERTY DAMAGE.
▲ ▲
!
The height "P" in pipe length charts should not ex-
ceed 13 feet (4 m).
PUMP PURGE
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EXPLOSION HAZARD
OMITTING STEPS 2 AND 3 BELOW WILL RESULT
IN A COLLECTION OF UNBURNED OIL IN THE
COMBUSTION CHAMBER CREATING A HAZARD-
OUS SITUATION UPON BURNER STARTUP.
FAILURE TO FOLLOW THIS WARNING COULD
RESULT IN SERIOUS INJURY, DEATH, OR PRO-
PERTY DAMAGE.
NOTE: To protect the pump gears, it is advisable to
lubricate the pump prior to purging a lift system. Ap-
ply oil through the VACUUM PORT (C). See Figure
43.
A. SINGLE LINE (GRAVITY FEED SYSTEM)
I. Loosen the bleeder valve (A) until oil fl ows out.
Tighten the bleeder valve securely and start burner.
II. When bleeding the pump by pressure:
1) Loosen the bleeder valve (A). See Figure 43.
2) Disconnect nozzle oil supply line at the
pump nozzle port (B). See Figure 43.
3) Attach a fl exible plastic tube to the pump
nozzle, port directing the oil fl ow into a
bucket.
4) Loosen the screw(s) securing the air tube
cover, allowing it to be removed freely. See Initial
Setup on page 34.
5) Holding the air tube cover in its proper
location start the burner.
6) When the solenoid valve is engaged ap
proximately 10 seconds after starting,
remove the air tube cover and shine a light
source on the photocell, allowing it to see
false light.
7) Run the burner until the fuel pump has
been purged of air, then tighten the bleeder
valve and immediately shut down the burn
er.
WARNING
CAUTION
WARNING
!
▲ ▲
!
The vacuum should not exceed 11.44 inches of mer-
cury.
NOTE: An external, appropriately listed and certi-
fi ed oil fi lter must be placed in the fuel line between
the fuel tank and the burner pump.
3.10 Electrical Connection
B. TWO LINE (LIFT SYSTEM)
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!
WHEN THE BYPASS PLUG IS INSTALLED, A
TWO-PIPE SYSTEM MUST BE USED OR FAILURE
OF THE PUMP SHAFT WILL OCCUR.
FAILURE TO FOLLOW THIS WARNING COULD
RESULT IN SERIOUS INJURY, DEATH, OR PRO-
PERTY DAMAGE.
B
Turn off the main power source to the burner and
remove the air tube cover. Shines a light source on
the photocell (now visible when the air tube cover
on the oil burner is removed) See Initial Setup on
page 34. Return power to the burner and activate
the burner. With the light source in place, the burner
will operate in prepurge only. Run the boiler until
the pump is purged of air. Once purged, turn off the
power source and replace the air tube cover. Return
power to the burner. The burner is now ready to
operate
NOTE: It is important that the fuel line be comple-
tely sealed and free from air leaks or any internal
blockages.
CAUTION
WARNING
C
A
Figure 43
18-CG03D1-4
43