American Standard PFWF071A93ABA Installation Manual page 41

Model BF3 and BF5
1. Mounting Flange
2. Mounting Gasket
3. Burner Access Hole
4. M8 x 1.25 Double End Threaded Studs,
included with boiler hardware
Figure 39
The electrical connection between the boiler and the
burner is made using a 7-pin plug. The boiler cord
will be found near the front left base of the boiler.
Connect the burner plug. Electrical connection and
startup are covered later in this document.
PUMP CONNECTIONS AND PORT IDENTIFICA-
TION
This burner is shipped with the oil pump set to oper-
ate on a single line system. To operate on a two-line
system the by-pass plug must be installed.
▲ ▲
CAUTION
!
Do NOT operate a single line system with the by-
pass plug installed. Operating a single line system
with the by-pass plug installed will result in damage
to the pump shaft seal.
NOTE: Pump pressure must be set at time of burner
start-up. A pressure gauge is attached to the PRES-
SURE PORT (8) for pressure readings. Two PIPE
CONNECTORS (4) are supplied with the burner for
connection to either a single or two-line system. Also
supplied are two ADAPTORS (3), two female ¼" NPT,
to adapt oil lines to burner pipe connectors. All pump
port threads are British Parallel Thread design.
NOTE: Direct connection of NPT threads to the
pump will damage the pump body.
4
1
2
3
Figure 39b
WET BASED CHAMBER APPLICATIONS
1
2
3
4
Pump Legend
1. Pump Cover
2. Pump Cover O-Ring
3. BSPP to NPT Adapters
4. Return Port By-Pass Screw
5. Supply Port
6. Supply and Return Oil Lines
7. Return Port
8. Pump Pressure and Bleeder Port
A
B
5
6
Figure 40
18-CG03D1-4
8
7
4
41