Beckett CF 2500/ 3500 Instruction Manual page 13

Figure 12 – Air damper and damper motor assembly
Table 5 – Initial air adjusting plate settings
(damper position)
Approximate
adjusting plate
Tube "KP"
settings
0
1
8.00
9.00
2
3
11.00
4 12.00
5 15.00
6 17.00
7
18.00
19.00
8
9
20.00
10
22.00
10.5 25.00
Form 6104 BCF-35-R0699
Instruction Manual
a
d
e
f
g
3516
Firing rate, gph
Tube "KM"/"KR"
-- --
8.00
9.00
11.00
12.00
15.00
17.00
19.00
22.00
25.00
29.00
35.00
– Model CF2500/CF3500 Oil Burner
a
b
b
c
d
k
3517
Legend (Figure 12)
a Damper motor – do not adjust internal cam
b Arm assembly
c Ball joint assembly – do not adjust position of ball
joint
d Damper rod
e Damper rod guide
f Damper linkage arm - sets high-fire air position
g Damper
h Damper label - position indicator for air adjusting plate
k Damper indicator - permanently attached to damper
m Air adjusting plate - sets low-fire air position
h
m
13