American Standard PFWF071A93ABA Installation Manual page 37

INITIAL SET UP
NOTE: If further detail is needed, refer to the Riello
burner installation guide inside the Riello Burner.
A. OPEN BURNER CARTON
Remove the burner assembly, mounting gasket, parts
bag, and ship with literature from the carton. Check
the parts list to ensure all parts are present. The oil
burner ships factory assembled.
B. NOZZLE SELECTION/REPLACEMENT
The oil burners ship with a factory installed nozzle
for application with a specifi c boiler model. See Page
37, for approved Riello burner and boiler combina-
tions. Page 37 provides the correct fi ring rate and
nozzle size for each combination. Burners ship with
one or two additional nozzles to accommodate other
combinations. Use the information on page 37 to
determine if a nozzle change is required.
C. If a different size nozzle is needed, loosen the oil
delivery tube nut from the pump. Refer to Figures 33
and 34.
Model 40 BF3 & BF5
Air Tube
Cover Plate
Phillips
Screw
Figure 33
Model 40 F3, F5 & F10
Figure 34
Primary
Phillips
Screw
D. REMOVAL OF DRAWER ASSEMBLY
1. To remove the drawer assembly, loosen the
screw (3) securing the PRIMARY CONTROL (1) and
then unplug by carefully pulling it back and then
upward.
2. Remove the AIR TUBE COVER PLATE (5) by
loosening the two retaining SCREWS (4) (See Figures
33 and 34). (Two screws for Model BF5)
3. Disconnect the fuel line from the fuel pump.
4. Loosen Phillips SCREW (2) that secures the
drawer assembly and then slide the complete drawer
assembly out of the combustion head as shown in
Figures 33 and 34.
5. To insert drawer assembly, reverse the proce-
dures in steps 1-4 above.
E. NOZZLE REPLACEMENT
1. Remove the NOZZLE ADAPTER (2) (Figure
35) from the DRAWER ASSEMBLY by loosening the
Phillips SCREW (1).
2. Insert the proper NOZZLE into the NOZZLE
ADAPTER and tighten securely DO NOT overtight-
en.
3. Replace adapter with new nozzle installed,
into the drawer assembly and secure with Phillips
screw (1).
NOTE:
The nozzle and the pump pressure must be in accor-
dance with the burner setup charts on pages 38 and
39.
4. To insert drawer assembly, reverse the proce-
dure in steps 1 to 4 above and then attach fuel line to
the pump.
Nozzle
Nozzle
Adapter
Phillips
Screw
Figure 35
18-CG03D1-4
37