Weil-McLain F10 - F20 User manual

Part Number 550-141-974/0404
Riello burner
Models F & RL Flame retention burner for light oil firing
Burner specifications and data
80Water & steam boilers
for use with Gas, Light Oil, &
Gas/Light Oil – Fired Burners
Dimensions (inches)
Model
RL 28 - 38
Model
F10 - F20
Dimensions (inches)

Riello ––
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– Models 40 Series F & RL
2Part Number 550-141-974/0404
Burner capacities listed for elevations up to 2,000 feet. For higher elevations, contact local Weil-McLain distributor/agent or sales
office.
Light oil based on No. 2 fuel oil with heating value of 140,000 Btu per gallon
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.
All settings and pressures shown are for initial start-up. Final values should be confirmed with combustion analysis.
Light Oil Control Systems:
• OO: On - Off operation. Single-position air damper.
• LFS: On-off operation, low fire start, high fire run. Two position air, two position oil.
• LHL: Low-high-low-off firing conditions – two position air & fuel controlled by separate motor, open
damper pre-purge.
• MOD: On-off operation with proven low fire start and full modulating firing conditions. Proportional motor
drives fuel metering valve and combustion air damper according to firing conditions, open damper pre-
purge.
120/60/1 control circuit is used for all burners
All 3 phase models require a separate 120/60/1 control voltage supply.
Two stage units require a single SPDT controller for LHL firing rate operation.
Models 780 through 1280 require a 120v bumping type signal or PID control type for modulation.
Models 780 through 1280 include a motor relay or contactor
Combustion Controls:
• Riello model 530 SE/C electro-mechanical combination flame safeguard control/ignition transformer monitors the oil
burner flame with cad-cell, provides interrupted ignition and pre-purge. Post purge relay option available upon request.
• Siemens LAL 2.25 flame safeguard control monitors the oil burner flame with visual diagnostic window, provides pre-
purge and post purge, provides switching necessary to allow firing rate motor to be driven to both low fire and high fire
positions, prevent start up if pre-ignition interlocks are open and has low fire start proven circuit. In the event pre-
ignition interlock circuit or running interlock circuit does not “prove”, system will lock out on safety. Infra red detector
is standard.
Other flame safeguards make and models available upon request on models 780 through 1280.
Burners will be completely assembled and wired and factory tested fired.
R Series Burners listed by Underwriters Laboratories, Inc. for the US and Canada, Fire Marshall Commonwealth of Massachusetts,
City of New York MEA and others.
40 Series F Burners listed by Underwriters Laboratories, Inc. for the US, Fire Marshall Commonwealth of Massachusetts, City of
New York MEA, CSA and others.
Special controls can be provided to meet other code requirements not listed. Consult local Weil-McLain distributor/agent or sales
offices.
All models will be provided with direct spark ignition. Electric gas pilot is not available.
40 Series F burner motors run at 3250 RPM. R Series burner motors run at 3400 RPM.
Combustion air damper position indicator reads 0-90° on RL28-38 and is found internally.
On all modulating units air settings adjusted on cam profile.
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Burner Specification and Data Sheet
Part Number 550-141-974/0404 3

Riello ––
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– Models 40 Series F & RL
4Part Number 550-141-974/0404