Beckett CF2500 Manuel D’Utilisation

If your burner was built for a specifi c OEM application, 
the “Mfr’s Settings” label (see Figure 1) will indicate 
the application and the initial air settings made at 
Beckett.  Please verify those settings using the following 
procedure.  
If your burner was not built for a specifi ed application, 
the following steps outline the procedure for initially 
setting the damper (these settings may be different from 
settings specifi c to a particular OEM).  

Refer to Figure 17A/B and Table 4 for this procedure.

Remove the cover screw (A) then the cover (B) and 
set aside.
Push in on pin (G) to disengage the motor from the 
damper shaft and cam stack.  Rotate the damper 
shaft by hand to place the adjustment cams in a 
position where their adjustment scale can be easily 
seen.  Release pin (G) to secure the damper shaft 
and cam stack to the motor.
Using the wrench (C) supplied with the damper 
motor, adjust the blue low fi re cam (D) to the initial 
setting listed in Table 6.
Using the same wrench, adjust the red high fi re 
cam (H) to the initial settings listed in Table 6.
To adjust the high fi re transition, use a small straight 
edge screwdriver.  Turn the white adjustment screw 
located in the orange transition cam (J) until the 
cam indicator is half way between the high and low 
settings on the scale.
After setting all the cams, make sure the damper 
shaft and cam stack is set between its low fi re 
setting and its high fi re setting.  (If you don’t it may 
not move when it is powered.)  Push in pin (G), 
move the damper by hand so that notch (E) is 
between the low fi re setting and high fi re setting 
on scale (F), then release pin (G) to re-engage the 
motor.  When the motor is powered it will go to its 
low fi re setting.

This initial setting should be adequate for starting the 
burner at low fi re.  Once the burner is in operation, 
the air setting will be adjusted for best performance as 
discussed later in this manual.  Don’t forget to re-install 
the cover after all adjustments have been made.

1.

2.

3.

4.

5.

6.

The damper plate is attached 
by screws to its shaft, and bears 

against a fl at on the shaft for alignment.  The shaft is 
secured to the damper motor by a sleeve coupling with 
two setscrews bearing against the damper shaft and two 
more against the motor shaft.  The motor shaft has a 
fl at matching the one on the damper shaft.  The fl ats on 
the damper shaft and the motor shaft should be aligned 
so that the position indicator in the damper motor reads 
accurately.  The best way to align the fl ats is to tighten 
the setscrews that bear against the fl ats on the shafts 

Legend (Figures 17A & 17B)

A Cover screw

B Cover

C Wrench

D Low fi re cam (blue)

E Cam notch

F Damper motor scale

G Disengaging pin

H High fi re cam (red)

J Transition cam (orange)

fi rst, and then tighten the ones that bear against the 
round surface of the shafts afterward.

The test for proper alignment is to disengage the damper 
motor from its shaft using the disengaging pin (Item G in 
Figure 17B) and rotate the damper plate to its full closed 
position.  The position indicator should point to 0° within 
+ 5° tolerance.