Burnham MST396 - Manual (Page 62)

6
TABLE
8: BECKETT
AFG B
U
R
N
E
R
S
P
E
C
IF
IC
A
TI
O
N
S
Boiler Model
Burner Input (gph)
Head T
ype
(setting)
Air
Shutter (setting)
Air Band
(s
et
tin
g)
Nozzle
Pump
Pressure
(psi)
Approx. Shipped
CO
2
(%)
Baffle Lo
ca
tio
n
(pass)
Approx.
Stack
Temp.
Increase Without Baffles
(F)
2
Baffles
IN
Minimum Breech Pressure ("w
.c.)
3
Baffles OUT
M
in
im
um
Breech Pressure ("w
.c.)
3
Baffles
IN
M
in
im
um
Overfire Pr
es
su
re
("w
.c.)
3
Baffles OUT
Minimum Overfire Pressure ("w
.c.)
3
M
ST
28
8
0.75
L1
6 1
1
0.60 x 60A Delavan
150
11.5
---
---
0
0
---
0.010
M
ST
39
6
1.05
L1
7
1
0.85 x 60B Delavan
150
11.5
2nd
20
0
0
0.040
0.020
M
ST
51
3
1.35
V1 (0)
7
2
1.10 x 60B
Hago
150
11.5
2nd
40
0
0
0.040
0.030
M
ST
62
9
1.65
V1 (3)
7
2
1.35 x 60B
Hago
150
11.5
2nd
52
0
0
0.050
0.030
Notes 1)
MST288 at 0.75 GPH firing rate utilizes a low fire baffle.
2)
The increased stack temperature with the baffles removed is an approximation, based on a constant supply temperature of 212°F and 1
1.5% CO
2
.
Actual field conditions may be
dif
ferent.
3)
These values are minimum and could be as much as -.03" w
.c., more without impacting performance. Pressures based on 1
1.5% CO
2
. Example: MST629 could have a breech pressure
of -.03" w
.c. and an overfire pressure of .020" w
.c.
4) Single stage fuel pump is standard, two stage fuel pump is optional. Burner manufacturer has preset single stage fuel pump to settings shown in table above.
Two stage fuel pump is factory set at 140 PSI and must be readjusted to settings shown above during burner start-up.