Weil-McLain WJB2 Boiler User Manual


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Burner Specification and Data Sheet
Light Oil Control Systems:8.
LF (FALFS): On-off operation, fixed air, reduced fuel low fire start, high fire run. Single-position air, two-position oil.
L (LHO): On-off operation, low fire start, high fire run. Two-position air, two-position oil.
H (LHL): Low-high-low-off firing conditions. Two-position air, two-position oil.
M (MOD): On-off operation, with proven low fire start and full modulating firing conditions. Proportional motor drives fuel metering valve and combus-
tion air damper according to the firing conditions. Fixed damper pre-purge on 488-1088R, open damper pre-purge on 1088-1888.
Gas/Light Oil Control Systems:9.
A/LF (OO/FALFS): Combines gas and light oil characteristics listed above.
L/L (LHO/LHO): Combines gas and light oil characteristics listed above.
H/H (LHL/LHL): Combines gas and light oil characteristics listed above.
M/M (MOD/MOD): Combines gas and light oil characteristics listed above.
120/60/1 control circuit is used for all burners.10.
Control circuit transformer is available as an option.11.
Motor starter contact will be furnished for all units.12.
Combustion Controls:13.
a) R8184G combustion control uses cadmium cell for flame detector to monitor oil burner flame, also furnishes intermittent ignition.
b) RM7897 flame safeguard control uses ultraviolet electronic flame detector to monitor gas or oil burner flame and provides pre-purge programming. “A”
models provide intermittent pilot; “C” models provide interrupted pilot and RUN/TEST switch.
c) RM7840M, E110/EPD390 flame safeguard control monitors the oil or gas burner flame, provides pre-purge and post-purge programming. Timed low fire
start is provided by means of timing built into control. Control is used with UL on-off (low fire start) systems. Ultraviolet sensitive electronic flame detector
is standard with infrared detector available.
d) RM7840L, E110/EPD170 flame safeguard control monitors the oil or gas burner flame, provides pre-purge and post-purge programming, provides switch-
ing necessary to allow firing rate motor to be driven to both low fire and high fire positions, prevents start-up if pre-ignition interlocks are open and has low
fire start proving circuit. In the event pre-ignition interlock circuit or running interlock circuit does not “prove”, system will lock out on safety. Ultraviolet
sensitive electronic flame detector is standard with infrared detector available.
Gas Control Systems:7.
A (OO): On-off operation, low fire start, high fire run. Single-position air, adjustable opening gas valve.
L (LFS): On-off operation, low fire start, high fire run. Two-position air controlled by damper arm on motorized gas valve.
H (LHL): Low-high-low-off firing conditions. Two-position air controlled by damper arm on motorized gas valve.
M (MOD): On-off operation, with proven low fire start and full modulating firing conditions with combustion air control.
Proportional motor drives fuel metering valve and combustion air damper according to the firing conditions.
Fixed damper pre-purge on 488-988R, open damper pre-purge on 988-1888.
Part Number 550-142-022/0509 3
Boiler
Model
Number
Pressure
drop thru
gas train
Inches
W.C.
Gas
orice
pressure
Inches
W.C.
Gas
Pressure
required at
Gas Control
Inlet
Inches
W.C.
Initial Damper
Setting Inches
(Oil)
Initial
Damper
Setting
Inches
(Gas)
Initial Damper
Setting Inches
(Gas/Light Oil)
Oil Nozzle(s)
Oil
Pressure
PSIG
Fuel Unit
Burner-Motor
Driven
3450 RPM
Min. Max.
Low
Fire
High Fire High Fire
High
Fire
(Gas)
High
Fire
(Oil)
Qty.
GPH @
100
PSIG
Brand
Spray
Angle
High
Fire
Low
Fire
Type
Gear
GPH
488R 2.3 2.4 5.5 14 1/4 1 1-1/4 1-5/16 1 1 4.00 Hago P 45º 300 100 22R220D 45
488 2.3 2.5 5.7 14 1/4 1-13/16 1-7/16 1-9/16 1-3/16 1 4.00 Hago P 45º 305 100 22R220D 45
588 3.7 2.8 7.0 28 1/2 13/16 1-7/8 1-7/8 1-3/16 1 5.50 Hago P 45º 290 100 22R220D 45
688 2.7 3.2 6.2 28 7/16 7/8 1-3/16 1-5/16 1 1 7.00 Hago P 45º 290 100 22R220D 45
788 2.9 2.8 5.1 28 1/2 1-3/8 1-13/16 1-7/8 1-1/2 2 4.25 Hago P 60º 280 100 22R221D 70
888 2.55 1.8 4.5 28 5/8 1-1/2 1 1-3/4 1-1/2 1 10.00 Hago P 45º 280 100 22R221D 70
988R 3.15 1.7 4.9 28 5/8 1-3/4 1-1/8 1-7/8 1-3/4 1 10.00 Hago P 45º 300 100 22R221D 70
988 3.8 1.8 5.8 28 1-3/16 1-5/16 1-1/4 1-1/2 1-3/16 1 11.00 Hago P 45º 290 100 22R221D 70
1088R 4.4 2.2 6.6 28 5/8 1-1/8 1-3/8 1-1/4 1-1/8 2 6.00 Hago P 45º 280 100 22R221D 70
1088 3.2 2.4 6.0 28 3/4 1-5/16 1-7/16 1-7/16 1-5/16 2 6.50 Hago P 45º 280 100 22R221D 70
1188 4.0 2.0 6.4 28 3/4 1-3/4 1-13/16 1-7/8 1-3/4 2 7.00 Hago P 45º 280 100 22R221D 70
1288 3.0 2.4 6.0 28 13/16 2-1/16 2-5/16 2-5/8 2-1/8 2 7.50 Hago P 45º 300 100 22R221D 70
1388 3.8 2.0 6.3 28 3/4 1-1/2 2-1/2 2-1/2 1 7/8 2 8.50 Hago P 60º 290 100 22R322D 105
1488 4.6 2.6 7.7 28 15/16 2-3/16 2-1/8 2-1/4 2 2 9.00 Hago P 60º 300 100 22R322D 105
1588 5.1 2.8 8.7 28 1 2-1/8 3-3/8 3-1/4 2-1/4 2 10.00 Hago P 60º 280 100 22R322D 105
1688R 4.6 2.9 9.2 28 1 1/16 2-1/2 1-7/8 2-1/4 1-1/2 2 10.00 Hago P 60º 300 100 22R623D 135
1688 6.1 3.1 9.8 28 1 2-5/8 2-1/4 2-1/2 2-1/8 2 10.50 Hago P 60º 295 100 22R623D 135
1788 5.25 4.5 9.1 28 9/16 2-1/4 3-1/4 3-1/4 3 2 11.00 Hago P
60º 300 100 22R623D 135
1888 5.7 6.0 10.4 28 1 3 1-3/4 1-7/8 1-7/8 3 8.0 Delevan 60º 300 65 SG0550 108
Standard Oil Pump Location:
488R through 1488 Gas / Oil – Integral to Burner, 1588 through 1888 Remote Pump
488R through 1688 Oil – Integral to Burner, 1788 and 1888 Remote Pump
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