Data Sheet

Webster Burner Information 5.0 ratings
Motor Firing Sequence
[1]
Standard UL Flame Safeguard Gas Train
Boiler
Size
Burner
Model
HP Voltage
Gas and
Gas/#2 Oil
#2 Oil Gas #2 Oil Gas/#2 Oil
Size
[3]
Min. Pres. Max. Pres.
4FH-63 JB1-02
1/4
120/60/1 On-Off On-Off RM7897C/UV R7284U/Cad RM7897C/UV 1 7" w.c. 14" w.c.
4FH-78 JB1-03
1/3
120/60/1 On-Off On-Off RM7897C/UV R7284U/Cad RM7897C/UV 1 7" w.c. 14" w.c.
4FH-92 JB1-03
1/3
120/60/1 On-Off On-Off RM7897C/UV R7284U/Cad RM7897C/UV 1 7" w.c. 14" w.c.
4FH-107 JB1-03
1/3
120/60/1 On-Off On-Off RM7897C/UV R7284U/Cad RM7897C/UV 1 7" w.c. 14" w.c.
4FH-127 JB1-03
1/2
120/60/1 L-H-O LFS On-Off RM7897C/UV R7284U/Cad RM7897C/UV
1
1/4
7" w.c. 14" w.c.
4FH-154 JB1-03
1/2
120/60/1 L-H-O LFS On-Off RM7897C/UV R7284U/Cad RM7897C/UV
1
1/2
7" w.c. 14" w.c.
4FH-180 JB1-05
3/4
120/60/1 L-H-O LFS On-Off RM7897C/UV R7284U/Cad RM7897C/UV
1
1/2
7" w.c. 14" w.c.
4FH-209 JB2-10
1
240/60/1 L-H-O LFS L-H-O LFS RM7897C/UV R7284U/Cad RM7897C/UV 2 7" w.c. 14" w.c.
4FH-240 JB1-07
3/4
120/60/1 L-H-O LFS L-H-O LFS RM7897C/UV R7284U/Cad RM7897C/UV 2 7" w.c. 14" w.c.
4FH-277 JB2-10
1
240/60/1 L-H-O LFS L-H-O LFS RM7897C/UV R7284U/Cad RM7897C/UV 2 7" w.c. 14" w.c.
4FH-311 JB2-10 1 240/60/1 L-H-O LFS L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV 2 7" w.c. 28" w.c.
4FH-345
[3]
JB2-10 1 240/60/1 L-H-O LFS L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV 2 9" w.c. 28" w.c.
4FH-360
[3]
JB2-10 1 240/60/1 L-H-O LFS L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV 2 9" w.c. 28" w.c.
4FH-450
[3]
JB2-30 3 230/460/3 L-H-O LFS L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV 2 9" w.c. 28" w.c.
4FH-563
[3]
JB2-50 5 230/460/3 L-H-O LFS L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV
2
1/2
9" w.c. 28" w.c.
4FH-675 JB3-50 5 230/460/3 L-H-O LFS L-H-O LFS RM7897C/UV RM7897C/UV RM7897C/UV
2
1/2
9" w.c. 28" w.c.
4FH-827 JB3-50 5 230/460/3 Full Mod Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 14" w.c. 28" w.c.
4FH-993 JB3-75
7
1/2
230/460/3 Full Mod Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 27" w.c. 42" w.c.
4FH-1157 JB3-100 10 230/460/3 Full Mod Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 27" w.c. 42" w.c.
4FH-1323 JB3-100 10 230/460/3 Full Mod Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3H 27" w.c. 42" w.c.
4FH-1654 HDRV5-75
7
1/2
230/460/3 Full Mod Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 27" w.c. 42" w.c.
4FH-1985 HDRV5-100 10 230/460/3 Full Mod Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 2# 5#
4FH-2315 HDRV7-150 15 230/460/3 Full Mod Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 2# 5#
4FH-2645 HDRV7-200 20 230/460/3 Full Mod Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 2# 5#
4FH-3075 HDRV9-400 40 230/460/3 Full Mod Full Mod RM7840L/UV RM7840L/UV RM7840L/UV 3 3# 5#
[1] Explanation of Firing Sequences:
Gas and Gas Sequence on Combination Gas/Oil Boilers
On-Off Fixed fire with slow opening gas valve, fixed air.
On-Off LFS Low fire start (not proven), high fire run, Lo-Hi-Off gas valve, air control by linkage from 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 On-Off fixed fire, fix air.
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 is 1/4 hp and Oil & Combination Gas/Oil is 1/3 hp
[3] Gas trains for models 1654 and larger boilers are Siemens.
October 16, 2012
SERIES 4FH-50
[2]

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