80

Water & steam boilers

for use with Gas, Light Oil, &

Gas/Light Oil – Fired Burners

Burner specifications and data

Power-Flame burners

Model

WCR

Flame retention type, for gas, light oil or combination gas/oil firing

Model WCR

Dimensions (inches)

4.00

A

F E

S

I

G

3.13

C(R)

H

X

D B(R)

5/8 Dia., 4 holes X

Note: Add .38 to “H” dim for size of opening in boiler front plate.

Part Number 550-141-938/0602

Power-Flame –

Model WCR

Notes 1

2

3

4

5

6

7

8

Burner capacities listed for elevations up to 2,000 feet. For higher elevations, consult local Weil-McLain distributor/agent or sales office.

Light oil ratings based on No. 2 fuel oil with heating value of 140,000 Btu per gallon.

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 Weil-McLain distributor/agent or sales office.

Boiler-burner unit to be adjusted to achieve +0.10 inches W.C. pressure at flue collar, resulting in positive pressure in firebox as listed.

Minimum gas pressures listed are subject to variations due to job conditions. Gas burners for other gas pressures are available.

Consult local Weil-McLain distributor/agent or sales office.

Gas tee pressures shown are for initial start-up. Final pressure should be determined after checking actual gas flow and combustion readings.

Gas Control Systems:

•

• 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. Two-position air controlled by damper arm on motorized gas valve, fixed damper pre-purge.

•

• LHL: Low-high-low-off firing conditions. Two-position air controlled by damper arm on motorized gas valve, fixed 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.

Light Oil Control Systems:

•

• RALFS: On-off operation, reduced air, low fire start, high fire run. Two-position air, two-position oil.

OO: On-off operation, low fire start, high fire run. Single-position air, single-position oil.

•

•

•

LHO: On-off operation, low fire start, high fire run. Two-position air, two-position oil. Fixed damper.

LHL: Low-high-low-off firing conditions. Two-position air, two-position oil. Fixed damper pre-purge.

MOD: On-off operation, with proven low fire start and full modulating firing conditions. Proportional motor drivesfuel metering valve and combustion air damper according to the firing conditions. Fixed damper pre-purge.

2 Part Number 550-141-938/0602

Burner Specification and Data Sheet

Notes 9

14

15

16

10

11

12

13

17

18

Gas/Light Oil Control Systems:

• OO/RALFS: Combines gas and light oil characteristics listed above.

•

•

• OO/OO: Combines gas and light oil characteristics listed above.

LHO/LHO: Combines gas and light oil characteristics listed above.

MOD/MOD: Combines gas and light oil characteristics listed above.

120/60/1 control circuit is used for all burners.

Control circuit transformer is available as an option.

Motor relay or contactor will be furnished for all units except 480 through 680.

Combustion Controls: a) R8184G combustion control uses cadmium cell for flame detector to monitor oil burner flame, also furnishes intermittent ignition.

b) RM7895 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) RM7840L, E110/EPD160 flame safeguard control 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 preignition interlock circuit or running interlock circuit does not “prove”, system will lock out on safety. Control is standard equipment with IRI – modulating (proven low fire start) system. Ultraviolet sensitive electronic flame detector is standard with infrared detector available.

d) RM7800L, E110/EP160 flame safeguard control 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 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.

Airflow safety switch is standard for all gas and combination gas/light oil units.

Burners will be completely assembled and wired (except gas train) and factory test-fired.

Burners listed by Underwriters Laboratories, Inc., state of Connecticut, Fire Marshal state of Massachusetts, city of New York MEA, and others.

Special controls can be provided to meet other code requirements 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 combination gas/light oil units. Direct spark ignition is standard for light oil units. Direct spark ignition is available as an option for combination gas/light oil units. Consult your local

Weil-McLain distributor/agent or sales office.

Part Number 550-141-938/0602 3

Power-Flame –

Model WCR

4

Part Number 550-141-938/0602