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Webster – Model WJB
Notes
Burner capacities listed for elevations up to 2,000 feet. For higher elevations, consult local Weil-McLain distributor/agent or sales office.1.
Light Oil ratings based on No. 2 fuel oil with heating value of 140,000 Btu per gallon.2.
Gas ratings based on natural gas with heating value of 1,000 Btu per cubic foot and specific gravity of 0.60. Gas burners for other gases are available. Consult local 3.
Weil-McLain distributor/agent or sales office.
Boiler-burner unit to be adjusted to achieve +0.10 inches W.C. pressure at the flue collar, resulting in positive pressure in firebox as listed.4.
Minimum gas pressures listed are subject to variations due to job conditions. Gas burners for other gas pressures are available. Consult local Weil-McLain distribu-5.
tor/agent or sales office.
Gas orifice pressures shown are for initial start-up. Final pressures should be determined after checking actual gas flow and combustion readings.6.
Part Number 550-142-022/05092
Boiler
Model
Number
88
Series 2
Burner Input
Positive
Pressure in
Firebox
In. W.C.
Standard Burner Model
Designation
Standard Combustion
Control
Standard Control
System
Burner Motor
3450 RPM H.P.
Standard
Voltage
No. 2
Oil
GPH
Gas
MBH
Gas
Light
Oil
Gas/
Light Oil
Gas
Light
Oil
Gas/
Light Oil
Gas
Light
Oil
Gas/
Light
Oil
Gas
H.P.
Light
Oil
Gas/
Light
Oil
488R 6.9 996 0.68 WJB1G-03 WJB1O-03 WJB1C-03 RM7897A R7184A RM7897C A A A 1/3 1/3 1/3 See notes
488 7.0 1010 0.70 WJB1G-03 WJB1O-03 WJB1C-03 RM7897A R7184A RM7897C A A A 1/3 1/3 1/3 See notes
588 9.4 1357 0.60 WJB1G-05 WJB1O-05 WJB1C-05 RM7897A R7184A RM7897C LFS LFS LFS 1/2 1/2 1/2 See notes
688 11.8 1701 0.58 WJB1G-07 WJB1O-07 WJB1C-07 RM7897A R7184A RM7897C LFS LFS LFS 3/4 3/4 3/4 See notes
788 14.2 2046 0.65 WJB1G-07 WJB1O-07 WJB1C-07 RM7897A R7184A RM7897C LFS LFS LFS 3/4 3/4 3/4 See notes
888 16.6 2382 0.66 WJB2G-07 WJB2O-10 WJB2C-10 RM7897A RM7897A RM7897C LFS LFS LFS 3/4 1 1 See notes
988R 17.2 2482 0.54 WJB2G-10 WJB2O-10 WJB2C-10 RM7897A RM7897A RM7897C LFS LFS LFS 1 1 1 See notes
988 18.8 2737 0.63 WJB2G-10 WJB2O-10 WJB2C-10 RM7897C RM7897A RM7897C LFS LFS LFS 1 1 1 See notes
1088R 20.0 2887 0.68 WJB2G-10 WJB2O-15 WJB2C-15 RM7897C RM7897A RM7897C LFS LFS LFS 1 1 1/2 1 1/2 See notes
1088 21.5 3082 0.78 WJB2G-10 WJB2O-15 WJB2C-15 RM7897C RM7897A RM7897C LFS LFS LFS 1 1 1/2 1 1/2 See notes
1188 23.5 3428 0.78 WJB2G-15 WJB2O-15 WJB2C-15 RM7897C RM7897A RM7897C LFS LFS LFS 1 1/2 1 1/2 1 1/2 See notes
1288 26.0 3773 0.76 WJB2G-15 WJB2O-15 WJB2C-15 RM7897C RM7897A RM7897C LFS LFS LFS 1 1/2 1 1/2 1 1/2 See notes
1388 28.5 4119 0.77 WJB2G-20 WJB2O-15 WJB2C-20 RM7897C RM7897A RM7897C LFS LFS LFS 2 2 2 See notes
1488 31.0 4464 0.78 WJB2G-20 WJB2O-15 WJB2C-30 RM7897C RM7897A RM7897C LFS LFS LFS 2 2 3 See notes
1588 33.0 4809 0.73 WJB2G-20 WJB2O-30 WJB2C-20 RM7897C RM7897A RM7897C LFS LFS LFS 2 3 2 See notes
1688R 34.5 4979 0.68 WJB2G-30 WJB2O-30 WJB2C-30 RM7897C RM7897A RM7897C LFS LFS LFS 3 3 3 See notes
1688 35.5 5155 0.74 WJB2G-30 WJB2O-30 WJB2C-30 RM7897C RM7897C RM7897C LFS LFS LFS 3 3 3 See notes
1788 38.0 5494 0.82 WJB2G-30 WJB2O-30 WJB2C-30 RM7897C RM7897C RM7897C LFS LFS LFS 3 3 3 See notes
1888 40.5 5845 0.80 WJB2G-30 WJB2O-30 WJB3C-50 RM7840L RM7897C RM7840L MOD LFS MOD 3 3 5 See notes
Standard Voltage Notes: 1/3 HP blower motor through ¾ HP – 120V/60/3 phase, 1 HP blower motor – 240V/60/3 phase, 1-½ HP blower motor through 5 HP- 240V/60/3 phase
Standard Gas Components and Sizes in Inches
Boiler
Model
Number
Manual
Hand
Valve
Low Gas
Pressure
Switch
Gas Pressure
Regulator
Diaphragm
Operating
Gas Valve
Motorized
Operating
Gas Valve
Motorized Operat-
ing Gas Valve w/
Proof of Closure
Safety Gas
Valve
Manual
Checking
Gas Valve
High Gas
Pressure
Switch
488R 1-¼ Optional 1-¼ 1 n/a n/a 1-¼ 1 Optional
488 1-¼ Optional 1-¼ 1 n/a n/a 1-¼ 1 Optional
588 1-¼ Optional 1-¼ n/a 1-¼ n/a 1-¼ 1-¼ Optional
688 1-½ Optional 1 ½ n/a 1-½ n/a 1-½ 1-½ Optional
788 1-½ Optional 1 ½ n/a 2 n/a 2 2 Optional
888 1-½ Optional 1 ½ n/a 2 n/a 2 2 Optional
988R 1-½ Optional 1 ½ n/a 2 n/a 2 2 Optional
988 1-½ Standard 1 ½ n/a 2 n/a 2 2 Standard
1088R 1-½ Standard 1 ½ n/a 2 n/a 2 2 Standard
1088 2 Standard 2 n/a 2 n/a 2 2 Standard
1188 2 Standard 2 n/a 2 n/a 2 2 Standard
1288 2-½ Standard 2-½ n/a 2 n/a 2-½ 2 Standard
1388 2-½ Standard 2-½ n/a 2 n/a 2-½ 2 Standard
1488 2-½ Standard 2-½ n/a 2 n/a 2-½ 2 Standard
1588 2-½ Standard 2-½ n/a 2 n/a 2-½ 2 Standard
1688R 2-½ Standard 2-½ n/a 2 n/a 2-½ 2 Standard
1688 2-½ Standard 2-½ n/a 2 2” 2-½ 2 Standard
1788 2-½ Standard 2-½ n/a 2-½ 2-½ 2-½ 2-½ Standard
1888 2-½ Standard 2-½ n/a 2-½ 2-½ 2-½ 2-½ Standard