Burnham Webster Data Sheet
SERIES 3
Webster Burner Information
Boiler Burner Motor Firing Standard UL Flame Safeguard Gas Train
Size Model HP Voltage
3-40 JB1-05
3-50 JB1-07
3-60 JB2-07
1/2
3/4
3/4
120/60/1 L-H-O LFS RM7897A/UV R7184A/UV RM7897C/UV 1
120/60/1 L-H-O LFS RM7897A/UV R7184A/UV RM7897C/UV 1
120/60/1 L-H-O LFS RM7897A/UV RM7897C/UV RM7897C/UV 1
Sequence
3-70 JB2-10 1 240/60/1 L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV 2 6" w.c. 28" w.c.
3-80 JB2-15 1½ 240/60/1 L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV 2 8" w.c. 28" w.c.
3-90 JB2-15 1½ 230/460/3 L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV 2 10" w.c. 28" w.c.
3-100 JB2-30 3 230/460/3 L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV 2
3-125 JB2-50 5 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 2
3-150 JB3-50 5 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 9" w.c. 28" w.c.
3-175 JB3-75 7½ 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 13" w.c. 28" w.c.
3-200 JB3-75 7½ 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 16" w.c. 28" w.c.
3-250 JB3-100 10 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 25" w.c. 28" w.c.
3-300 HDRV5-75 7½ 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 1.3 psig 10 psig
3-300 HDS5-50A 5 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 30"w.c. 10 psig
3-350 HDRV5-75 7½ 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 1.7 psig 10 psig
3-350 HDS5-75A 7½ 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 1.75 psig 10 psig
3-400 HDRV5-100 10 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 2
3-400 HDS5-100B 10 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 2
3-500 HDRV7-150 15 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 2
3-500 HDS5-100B 10 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 2
3-600 HDRV7-200 20 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 2.3 psig 10 psig
3-600 HDS7-200B 20 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 3.25 psig 10 psig
3-700 HDS7-250B 20 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 3.0 psig 10 psig
3-800 HDS7-300B 30 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 4.0 psig 10 psig
3-900 HDS9-400C 40 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 4.8 psig 10 psig
3-1000 HDS9-600C 60 230/460/3 Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 6.0 psig 10 psig
[1] Explanation of Firing Sequences:
[1]
Gas #2 Oil Gas/#2 Oil
Size
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
[2]
Min. Pres. Max. Pres.
5" w.c. 28" w.c.
8" w.c. 28" w.c.
9" w.c. 28" w.c.
9" w.c. 28" w.c.
15" w.c. 28" w.c.
2.2 psig 10 psig
2 psig 10 psig
3.4 psig 10 psig
2 psig 10 psig
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.
[2] Gas trains for 400 hp and larger boilers are Siemens. 9/25/2012
SERIES 3
Webster Burner Equipment
Equipment Fuel Description
Control Cabinet Gas, #2 Oil, Gas/#2 Oil NEMA 1A with hinged door; Remote shipped loose on models 3-300 to 3-800.
Control Voltage Transformer Gas, #2 Oil, Gas/#2 Oil Optional.
Motor Starter Gas, #2 Oil, Gas/#2 Oil Contactor with single phase motor, magnetic starter with overload protection with
3-phase motor.
Fusing Gas, #2 Oil, Gas/#2 Oil Control circuit only.
Ignition Gas and Gas/#2 Oil Gas/Electric pilot.
#2 Oil Direct spark (3-40 to 3-100).
Gas/Electric (3-125 to 3-800).
Signal Lights Gas, #2 Oil, Gas/#2 Oil Two [power on and fuel on]; (3-40 to 3-250).
Gas, #2 Oil, Gas/#2 Oil Four [power on, fuel on, call for heat, and flame failure]; (3-300 to 3-800).
Air Flow Safety Switch Gas, #2 Oil, Gas/#2 Oil All models; Exception on oil models 3-40 to 3-125 with integral oil pump.
Gas Train Gas and Gas/#2 Oil
Oil Pump #2 Oil and Gas/#2 Oil Integral with burner (3-40 to 3-125).
Oil Pressure Gauge #2 Oil and Gas/#2 Oil All models.
Pilot Gas Controls Gas, #2 Oil, Gas/#2 Oil All units with gas/electric pilot have manual pilot shut-off valve, high gas pressure
Fuel Changeover Gas/#2 Oil Manual switch.
UL gas train for minimum inlet pressure indicated on Burner Information table.
Assembled, wired and mounted on unit consisting of the following:
Manual shut-off valve.
Gas pressure regulator.
Manual leak test valve.
Automatic gas valve:
others.
(2) Safety gas valves.
Metering valv e:
High and Low gas pressure switches:
Normally open valve:
Separate oil pump set with motor and accessories mounted on boiler skid (3-150 to
3-800).
regulator and solenoid gas valve.
Diaphragm type with On-Off sequence. Motorized all
Models 3-200 to 3-800.
Models 3-80 to 3-800.
Models 3-400 to 3-800.
5/02
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