Weil-McLain WCR - Manual (Page 4)

Weil-McLain 88 Water and Steam Boilers — Series 2 — For Gas, Light Oil, & Gas/Light Oil-Fired Burners
4 Part No. 550-142-029/0508
Notes for Table 3
Combustion Controls: 1.
R7184P Uses cadmium cell for flame detector to monitor oil burner flame, also furnishes intermittent ignition.
RM7897A, RM7897C 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. RM7897 provides same as above with
post-purge.
RM7840L, E110/EPD170 Monitors the oil or gas burner flame, provides pre-purge and post-purge programming, provides switching 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.
RM7800L, E110/EP160 Monitors the oil or gas burner flame with digital readout control system, provides pre-purge and post-purge programming,
provides switching necessary to allow firing rate motor to be driven to both low fire and high fire position, 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.
Burner specifications and settings
(continued)
Flame safeguards Table 3
Flame Safeguards Provided with Listed Control Systems by Code
GAS BURNERS
Boiler
Model
Number
UL FM CSD-1 IRI
OO LHO LHL MOD OO LHO LHL MOD OO LHO LHL MOD OO LHO LHL MOD
488R-588 RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7897C RM7897C RM7897C RM7840L
688-988R — RM7897A RM7897A RM7897A — RM7897A RM7897A RM7897A — RM7897A RM7897A RM7897A — RM7897C RM7897C RM7840L
988-1388 — RM7897C RM7897C RM7840L — RM7897C RM7897C RM7840L — RM7897C RM7897C RM7840L — RM7897C RM7897C RM7840L
1488-1888 — RM7840L RM7840L RM7840L — RM7840L RM7840L RM7840L — RM7840L RM7840L RM7840L — RM7840L RM7840L RM7840L
LIGHT OIL BURNERS
Boiler
Model
Number
UL FM CSD-1 IRI
FALFS LHO LHL MOD FALFS LHO LHL MOD FALFS LHO LHL MOD FALFS LHO LHL MOD
488R R7184P R7184P R7184P R7184P R7184P R7184P R7184P R7184P RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7840L
488-588 R7184P R7184P R7184P R7184P R7184P R7184P R7184P R7184P RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7897A RM7840L
688-1088R — R7184P R7184P R7184P — R7184P R7184P R7184P — RM7897A RM7897A RM7897A — RM7897A RM7897A RM7840L
1088-1288 — RM7897A RM7897A RM7840L — RM7897A RM7897A RM7840L — RM7897A RM7897A RM7840L — RM7897A RM7897A RM7840L
1388-1888 — RM7840L RM7840L RM7840L — RM7840L RM7840L RM7840L — RM7840L RM7840L RM7840L — RM7840L RM7840L RM7840L
COMBINATION GAS/OIL BURNERS
Boiler
Model
Number
UL FM CSD-1 IRI
OO/FALFS LHO LHL MOD OO/FALFS LHO LHL MOD OO/FALFS LHO LHL MOD OO/FALFS LHO LHL MOD
488R-588 RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7897C RM7840L
688-988R — RM7897C RM7897C RM7897C — RM7897C RM7897C RM7897C — RM7897C RM7897C RM7897C — RM7897C RM7897C RM7840L
988-1288 — RM7897C RM7897C RM7840L — RM7897C RM7897C RM7840L — RM7897C RM7897C RM7840L — RM7897C RM7897C RM7840L
1388-1888 — RM7840L RM7840L RM7840L — RM7840L RM7840L RM7840L — RM7840L RM7840L RM7840L — RM7840L RM7840L RM7840L