Burnham Series 4S Webster Data Sheet
Webster Burner Information
Boiler
Burner
Motor
Firing
Standard UL Flame Safeguard
Gas Train
Size
Model
HP
Voltage
Sequence
[1]
Gas
#2 Oil
Gas/#2 Oil
Size
[2]
Min. Pres. Max. Pres.
4S-100
JB2-30
3
230/460/3
L-H-O LFS
RM7897C/UV RM7897C/UV RM7897C/UV
2
1/2
10" w.c.
28" w.c.
4S-125
JB3-50
5
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
2
1/2
16" w.c.
28" w.c.
4S-150
JB3-50
5
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
10" w.c.
28" w.c.
4S-175
JB3-75
7
1/2
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
14" w.c.
28" w.c.
4S-200
JB3-75
7
1/2
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
18" w.c.
28" w.c.
4S-250
HDS5-50A
5
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
23" w.c.
28" w.c.
4S-300
HDS5-75A
7
1/2
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
1.3 psig
10 psig
4S-350
HDS5-75A
7
1/2
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
1.7 psig
10 psig
4S-400
HDS5-100B
10
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
2
1/2
2.2 psig
10 psig
4S-500
HDS5-150B
15
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
3.4 psig
10 psig
4S-600
HDS7-200B
20
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
2.3 psig
10 psig
4S-700
HDS7-250B
25
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
3.2 psig
10 psig
4S-800
HDS9-300B
30
230/460/3
Full Mod
RM7840L/UV RM7840L/UV RM7840L/UV
3
4.4 psig
10 psig
[1] Explanation of Firing Sequences:
Gas and Gas Sequence on Combination Gas/Oil Boilers
L-H-O LFS
Low fire start (not proven), high fire run, air control by linkage to motorized gas valve.
Full Mod
Full modulation with proven low fire start, synchronized fuel/air control by modulating motor.
Oil and Oil Sequence on Combination Gas/Oil Boilers
On-Off LFS Low fire start (not proven), high fire, oil cylinder air control. Reduced input start with by-pass.
Full Mod
Full modulation with proven low fire start, synchronized fuel/air control by modulating motor. With oil metering
valve and oil pressure regulating valve.
valve and oil pressure regulating valve.
[2] Gas trains for 400 hp and larger boilers are Siemens.
SERIES 4S