Weil-McLain RL 28 - 38, F10 - F20 specifications Riello - Models 40 Series F & RL

Riello – Models 40 Series F & RL

Notes

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1Burner capacities listed for elevations up to 2,000 feet. For higher elevations, contact local Weil-McLain distributor/agent or sales office.

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

3Boiler-burner unit to be adjusted to achieve +0.10 inches W.C. pressure at flue collar, resulting in positive pressure in firebox as listed.

4All settings and pressures shown are for initial start-up. Final values should be confirmed with combustion analysis.

5Light 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.

6120/60/1 control circuit is used for all burners

7All 3 phase models require a separate 120/60/1 control voltage supply.

8Two stage units require a single SPDT controller for LHL firing rate operation.

9Models 780 through 1280 require a 120v bumping type signal or PID control type for modulation.

10Models 780 through 1280 include a motor relay or contactor

11Combustion 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.

12Other flame safeguards make and models available upon request on models 780 through 1280.

13Burners will be completely assembled and wired and factory tested fired.

14R Series Burners listed by Underwriters Laboratories, Inc. for the US and Canada, Fire Marshall Commonwealth of Massachusetts, City of New York MEA and others.

1540 Series F Burners listed by Underwriters Laboratories, Inc. for the US, Fire Marshall Commonwealth of Massachusetts, City of New York MEA, CSA and others.

16Special controls can be provided to meet other code requirements not listed. Consult local Weil-McLain distributor/agent or sales offices.

17All models will be provided with direct spark ignition. Electric gas pilot is not available.

1840 Series F burner motors run at 3250 RPM. R Series burner motors run at 3400 RPM.

19Combustion air damper position indicator reads 0-90° on RL28-38 and is found internally.

20On all modulating units air settings adjusted on cam profile.

Part Number 550-141-974/0404