How to find a suitable replacement for a Honeywell RA116A stack relay or model RA117A or RA817A protectorelay safety control for oil fired heating equipment.
In this article series we explain how to inspect, test, reset, or clean the stack relay switch used as a flame detection/safety device for primary control on oil fired heating systems (boilers and furnaces).
Cross Reference, Replacement & Substitution Chart for Stack Switches and ProtectoRelay's
If you need to replace a stack relay switch and cannot find the same brand and model control, there are often several controls that can do the job. Your heating supplier can make sure you choose the proper safety control replacement, but here are some examples of cross referencing.
Honeywell's Protectorelay® and other stack relay switch installation instructions include a table of cross-references showing which Honey controls (or Penn Controls (Pen 664, Penn670, Penn 680)) should be used to perform the equivalent functions as controls made by other stack relay manufacturers including the following, courtesy of Honeywell Corporation
White Rogers (WR 603, WR 611, WR 615 and WR 6L18),
General Electric GE (A101B2, GE CR7865)
General Perfex (GP 5200, GP 5300)
ITT General (ITT 5200, ITT R96A102A, ITT R96G102DC)
Can the stack relay on an old boiler be replaced by a newer protector relay? - Pancho, 2011/02/15
Yes. The replacement involves installing a properly located bracket to mount the cad cell sensor inside the burner tube where it can see the flame, wiring from the sensor to the protector relay or cad cell sensor control, and wiring that control to the burner motor.
Question: Where to Buy Replacements for the Honeywell RA116A / RA117A ProtectoRelay control - RA116A23K-10 substitute control
2016/11/06 JRyck said:
I have a RA116A23K-10 on my heater right now and it is acting up. I have found a RA116A-R20-R for sale. Can I change it out with it.
According to Sid Harvey, the R20R is a remanufactured control intended to replace the original RA116A stack relay.
I think the Honeywell RA116A-R20-R is simply a designation that you've found a re-built RA116A control - that ought to work. I give contact info for Honeywell - you can also call them to double check.
At customer.honeywell.com there are 65 versions of RA116 relays listed; the company says the RA116A23 series is obsolete and no longer available. In fact per the manufacturer, most of the older RA116's are considered obsolete. Current models listed by Honeywell include RA116A1055/U and RA116A1063/U.
At Sid Harvey you will also find older relays, including the Honeywell RA116A-R20R sometimes "new old stock" or re-manufactured controls that would most-likely be safer than a used control or a control of unknown condition listed on e-Bay (for example).
If changing the stack relay you need to match the probe's insertion length as that's a key variable among the various models - you want a probe that inserts the same as the original manufacturer's unit that you're replacing. Inserting a probe that is too short, too long, or that touches another metal or part in the heater would prevent proper operation leaving the system unsafe.
Another variation may be the number of seconds before the control trips off on safety - typically about 75 seconds.
Other control variations to watch for:
120 vs 240V
Constant vs. intermittent ignition burner. The RA116A stack relay is used with "intermittent ignition" oil burners, previously called "constant ignition" oil burners.
I'm nervous about installing a used control of unknown condition on a heating system, particularly when it's a safety device as is this protect-o-relay. A bent or damaged bimetallic spring, a damaged internal relay or spring, even a corroded contact could make the system unsafe, risking fire or worse.
If you don't have the Honeywell RA116A-RA117A-RA817A Installation, Operation Wiring Guide [PDF] contact me by email using the page top or bottom CONTACT link and I'll send you a copy of that PDF or click on the link at left to download a free copy of Honeywell's guide to Protectorelay Oil Burner Controls. Retrieved 2016/11/08, original source https://customer.honeywell.com/resources/techlit/TechLitDocuments/68-0000s/68-0119.pdf
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 RA116A and RA117A Protectorelay®, Oil Burner Controls, Honeywell, 1985 Douglas Drive North, Golden Valley MN 55422-3992, Tel: 800-3456770 x 423, Website: customer.honeywell.com or in Canada: Honeywell Limited, 35 Dynamic Dr., Toronto, Ontario M1V 4Z9, website: www.honeywell.com, June 2000. Web search 4/3/2012, original source: http://customer.honeywell.com/techlit/pdf/63-0000s/63-9421.pdf
 Domestic and Commercial Oil Burners, Charles H. Burkhardt, McGraw Hill Book Company, New York 3rd Ed 1969.
The Steam Book, 1984, Training and Education Department, Fluid Handling Division, ITT [probably out of print, possibly available from several home inspection supply companies] Fuel Oil and Oil Heat Magazine, October 1990, offers an update,
Principles of Steam Heating, $13.25 includes postage. Fuel oil & Oil Heat Magazine, 389 Passaic Ave., Fairfield, NJ 07004.
The Lost Art of Steam Heating, Dan Holohan, 516-579-3046 FAX
Principles of Steam Heating, Dan Holohan, technical editor of Fuel Oil and Oil Heat magazine, 389 Passaic Ave., Fairfield, NJ 07004 ($12.+1.25 postage/handling).
"Residential Hydronic (circulating hot water) Heating Systems", Instructional Technologies Institute, Inc., 145 "D" Grassy Plain St., Bethel, CT 06801 800/227-1663 [home inspection training material] 1987
"Warm Air Heating Systems". Instructional Technologies Institute, Inc., 145 "D" Grassy Plain St., Bethel, CT 06801 800/227-1663 [home inspection training material] 1987
Heating, Ventilating, and Air Conditioning Volume I, Heating Fundamentals,
Boilers, Boiler Conversions, James E. Brumbaugh, ISBN 0-672-23389-4 (v. 1) Volume II, Oil, Gas, and Coal Burners, Controls, Ducts, Piping, Valves, James E. Brumbaugh, ISBN 0-672-23390-7 (v. 2) Volume III, Radiant Heating, Water Heaters, Ventilation, Air Conditioning, Heat Pumps, Air Cleaners, James E. Brumbaugh, ISBN 0-672-23383-5 (v. 3) or ISBN 0-672-23380-0 (set) Special Sales Director, Macmillan Publishing Co., 866 Third Ave., New York, NY 10022. Macmillan Publishing Co., NY
Installation Guide for Residential Hydronic Heating Systems
Installation Guide #200, The Hydronics Institute, 35 Russo Place, Berkeley Heights, NJ 07922
The ABC's of Retention Head Oil Burners, National Association of Oil Heat Service Managers, TM 115, National Old Timers' Association of the Energy Industry, PO Box 168, Mineola, NY 11501. (Excellent tips on spotting problems on oil-fired heating equipment. Booklet.)
Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair
The Home Reference Book - the Encyclopedia of Homes, Carson, Dunlop & Associates Ltd., Toronto, Ontario, 2010, $69.00 U.S., is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. InspectAPedia.com ® author/editor Daniel Friedman is a contributing author. Field inspection worksheets are included at the back of the volume.
Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. Tel: (416) 964-9415 1-800-268-7070 Email: firstname.lastname@example.org. The firm provides professional home inspection services & home inspection education & publications. Alan Carson is a past president of ASHI, the American Society of Home Inspectors. Thanks to Alan Carson and Bob Dunlop, for permission for InspectAPedia to use text excerpts from The Home Reference Book & illustrations from The Illustrated Home. Carson Dunlop Associates' provides extensive home inspection education and report writing material.
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The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume.
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