Weil-McLain WCR - Manual (Page 2)

Weil-McLain 88 Water and Steam Boilers — Series 2 — For Gas, Light Oil, & Gas/Light Oil-Fired Burners
2 Part No. 550-142-029/0508
Burner data Table 1
Boiler
Model
Number
Burner Input
Positive
Pressure
In Firebox
In. W.C.
Standard
Burner Model Designation
Standard
Combustion Control
Standard
Control System
Burner Motor
3450 Rpm
Standard
Motor
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 Light
Oil
Gas/
Light
Oil
488R 6.9 996 0.80 WCR1-G-12 WCR1-OS WCR1-GO-12 RM7897A R7184P RM7897C OO FALFS OO/FALFS Z\x Z\x Z\x 120/60/1
488 7.0 1,010 0.80 WCR1-G-12 WCR1-OS WCR1-GO-12 RM7897A R7184P RM7897C OO FALFS OO/FALFS Z\x Z\x Z\x 120/60/1
588 9.4 1,356 0.58 WCR1-G-12 WCR1-OS WCR1-GO-12 RM7897A R7184P RM7897C OO FALFS OO/FALFS Z\x Z\x Z\x 120/60/1
688 11.8 1,701 0.46 WCR2-G-15 WCR2-OAS WCR2-GO-15 RM7897A R7184P RM7897C LHO LHO LHO/LHO Z\x C\v C\v 120/60/1
788 14.2 2,046 0.47 WCR2-G-15 WCR2-OAS WCR2-GO-15 RM7897A R7184P RM7897C LHO LHO LHO/LHO Z\x C\v C\v 120/60/1
888 16.6 2,382 0.49 WCR2-G-20A WCR2-OBS WCR2-GO-20A RM7897A R7184P RM7897C LHO LHO LHO/LHO C\v 1 1 240/60/1
988R 17.2 2,482 0.50 WCR2-G-20B WCR2-OBS WCR2-GO-20B RM7897A R7184P RM7897C LHO LHO LHO/LHO 1 1 1 240/60/1
988 18.8 2,737 0.50 WCR2-G-20B WCR2-OBS WCR2-GO-20B RM7897C R7184P RM7897C LHO LHO LHO/LHO 1 1Z\x 1Z\x 240/60/1
1088R 20.0 2,887 0.52 WCR2-G-20B WCR2-OBS WCR2-GO-20B RM7897C RM7897A RM7897C LHO LHO LHO/LHO 1 1Z\x 1Z\x 240/60/1
1088 21.5 3,082 0.73 WCR3-G-20 WCR3-O WCR3-GO-20 RM7897C RM7897A RM7897C LHO LHO LHO/LHO 1Z\x 2 2 240/60/1
1188 23.5 3,428 0.53 WCR3-G-20 WCR3-O WCR3-GO-20 RM7897C RM7897A RM7897C LHO LHO LHO/LHO 1Z\x 2 2 3-Phase*
1288 26.0 3,773 0.48 WCR3-G-20 WCR3-O WCR3-GO-20 RM7897C RM7897A RM7897C LHO LHO LHO/LHO 1Z\x 2 2 3-Phase*
1388 28.5 4,119 0.56 WCR3-G-25 WCR3-O WCR3-GO-25 RM7897C RM7840L RM7840L LHO LHO LHO/LHO 1Z\x 2 2 3-Phase*
1488 31.0 4,464 0.58 WCR3-G-25B WCR3-OB WCR3-GO-25B RM7840L RM7840L RM7840L LHO LHO LHO/LHO 3 3 3 3-Phase*
1588 33.0 4,809 0.59 WCR3-G-25B WCR3-OB WCR3-GO-25B RM7840L RM7840L RM7840L LHO LHO LHO/LHO 3 3 3 3-Phase*
1688R 34.5 4,979 0.80 WCR3-G-25B WCR3-OB WCR3-GO-25B RM7840L RM7840L RM7840L LHO LHO LHO/LHO 3 3 3 3-Phase*
1688 35.5 5,155 0.80 WCR3-G-25B WCR3-OB WCR3-GO-25B RM7840L RM7840L RM7840L LHO LHO LHO/LHO 3 3 3 3-Phase*
1788 38.0 5,494 0.62 WCR4-G-25 WCR4-OA WCR4-GO-25 RM7840L RM7840L RM7840L LHO LHO LHO/LHO 3 5 5 3-Phase*
1888 40.5 5,845 0.69 WCR4-G-25 WCR4-OA WCR4-GO-25 RM7840L RM7840L RM7840L LHO LHO LHO/LHO 3 5 5 3-Phase*
* 208/60/3, 240/60/3, 480/60/3 burner motor voltage must be specified.
Burner specifications and settings
Burner capacities listed for elevations up to 2,000 feet. For higher eleva- 1.
tions, consult local Weil-McLain distributor/agent or sales office.
Light oil ratings based on No. 2 fuel oil with heating value of 140,000
2.
Btu per gallon.
Gas ratings based on natural gas with heating value of 1,000 Btu per
3.
cubic foot and specific gravity of 0.60. Gas burners for other gases are
available. Consult local Weil-McLain distributor/agent or sales office.
Boiler-burner unit to be adjusted to achieve +0.10 inches W.C. pressure
4.
at the flue collar, resulting in positive pressure in firebox as listed.
Minimum gas pressures listed are subject to variations due to job condi-
5.
tions. Gas burners for other gas pressures are available. Consult local
Weil-McLain distributor/agent or sales office.
Tee pressures shown are for initial start-up. Final pressure should be
6.
determined after checking actual gas flow and combustion readings.
120/60/1 control circuit is used for all burners.
7.
Control circuit transformer is available as an option. 8.
Motor relay or contactor will be furnished for all units, except 488R 9.
and 488.
Airflow safety switch is standard for all gas and combination gas/light
10.
oil units.
Burners will be completely assembled and wired (except gas train) and
11.
factory test-fired.
Burners listed by Underwriters Laboratories, Inc., state of Connecti-
12.
cut, Fire Marshal state of Massachusetts, city of New York MEA, and
others.
Special controls can be provided to meet other code requirements 13.
not listed. Consult your local Weil-McLain distributor/agent or sales
office.
Electric gas pilot will be furnished as standard equipment on all gas and 14.
combination gas/light oil units.
Direct spark ignition is standard for light oil units. Direct spark ignition 15.
is available as an option for combination gas/light oil units. Consult
your local Weil-McLain distributor/agent or sales office.
Gas Control Systems: 16.
OO On-off operation, low fire start, high fire run. Single-position
air, adjustable opening gas valve.
LHO On-off operation, low fire start, high fire run. 488-1388:
two-position air controlled by damper arm on motorized gas
valve, fixed damper pre-purge. 1488-1888: two-position air
controlled by separate motor, open damper pre-purge.
LHL Low-high-low-off firing conditions. 488-1388: two-position
air controlled by damper arm on motorized gas valve, fixed
damper pre-purge. 1488-1888: two-position air controlled by
separate motor, open damper pre-purge.
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
488-1388, open damper pre-purge on 1488-1888.
Notes for Table 1 and Table 2