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Honeywell L8148A1017 High Limit Aquastat Relay with 8F fixed differential.Honeywell Aquastat Relays are the immersion type hydronic controllers that combine high limit protection with switching relay control of burner and circulator motors. Features:Used with a 24V thermostat; Includes transformer to provide power for the low voltage control circuit; Case available for horizontal or vertical mounting; UL Listed; Technical Specifications of Honeywell L8148A1017:Operating Range, High Limit: 140F to 240F; Differential Temperature: 8F fixed; Setpoint Temperature Range: 240F; Switching Action: SPST: High Limit & Circulator; Anticipator Setting: 0.2A; Maximum Safe Operating Pressure: Immersion Well: 255 psi; Voltage: 120V; Frequency: 60Hz; Electrical Ratings (burner AFL): Line Voltage: 7.4 A @ 120 Vac; 3.7 A @ 240 Vac; Electrical Ratings (burner ALR): Line Voltage: 44.4 A @ 120 Vac; 22.7 A @ 240 Vac; Electrical Ratings (burner millivolt): 0.25 A @ 1/4 to 12 Vdc; Electrical Ratings (circulator AFL): 7.4 A @ 120 Vac; Electrical Ratings (circulator AFL): 3.7 A @ 240 Vac; Electrical Ratings (circulator ALR): 44.4 A @ 120 Vac; Electrical Ratings (circulator ALR): 22.2 A @ 240 Vac; Capillary Length: 4-1/2"; Dimensions: 4-5/16" high x 6-1/8" wide x 3-1/8" deep; Insulation Depth: 1-1/2" to 3" less well; Mounting: Horizontal; Operating Humidity Range (% RH): 0 to 95% RH, non-condensing; Maximum Ambient Temperature: 150F with 1.2 A 24 V load; 77F with 1.4 A 24 V load; Electrical Connections: Quick-Connect / Screw; Approvals, Underwriters Laboratories Inc: UL Listed (File No. MP466, Vol. 13, Sec. 2, Guide No. MBPR2); Approvals, Canadian Standards Association: Certified (File No. LR1620, Guide No. 400-E-O); Tradeline Value: Tradeline
From the Manufacturer
Immersion-type controllers that combine high limit protection with switching relay control of burner and circulator motors.
Bryan Hynicka
Reviewed in the United States on December 31, 2024
Last piece to get the furnace running again after a lightning strike.
Robert H Humphrey
Reviewed in the United States on December 26, 2024
replaced old controller. working fine. controls my oil fired furnace boiler. reasonable price.
John F.
Reviewed in the United States on November 14, 2024
Was not a Honeywell but it is the brand that took over Honeywell. So its a direct replacement. Came packaged well and was half the cost compared to HVAC and plumbing stores near me. Fast shipping and was easy to install and working great!! Didnt give 5 stars because it says Honeywell and its NOT a honeywell. I would still buy it again!
Customer
Reviewed in Canada on October 23, 2024
My boiler's aquastat needed replacing, so I ordered this one to sit and wait on the shelf for the future need (I keep one ahead). It arrived quicky and was what I ordered.
Geno
Reviewed in the United States on October 17, 2022
Easy to Install Works fine
Sean B.
Reviewed in the United States on January 27, 2022
Had issue with the burner not staying lit on the boiler which resulted in no heat. Had a service person come to the house and he said that the aquastat was bad and gave a quote of over $1000.00 to fix it. Well looked around and found this exact replacement for the bad one on the boiler. Read the install directions and change out was very easy. Adjusted the high temp cutoff to be the same as the old one that was removed, hooked up the wiring and was good to go. Heating system works as it should. Saved close to $800.00 DIY!!
Customer
Reviewed in Canada on November 23, 2019
I used this to replace my existing one(Nat Gas) when it gave up the ghost. Installed in about a half hour. Take a picture of your old one and mark the wires before uninstalling, to ease installing the new one. Shipping was fast.
Shanbrooks79
Reviewed in the United States on October 11, 2017
My husband bought this in August 2017 and is just now getting around having our heating/plumbing guy in to install it. He noticed when he initially opened the package that the knockout were already knocked out but didn't think anything of it. WELL, the tech couldn't finish the installation b/c it doesn't work!! Not only are we out the cost of this faulty piece of equipment but we are also out the $$ for the plumbing/heating tech. I won't be a happy camper when we have no heat this winter!!
J. B.
Reviewed in the United States on February 27, 2016
The device has a design flaw which results in the leads on the relays burning off in time. If you are buying a replacement, this is probably why. The connections are left far too long from the factory and can flash over to other parts of the board, and a few of the traces are light on solder.Pull back the four metal tabs holding the IC board in, lift the board out. Dab a soldering iron on any funky looking joints and trim back terminals to the board with a pair of end cutters. If you have a hot glue gun, slather the whole back of the Ic board with about 1/8" of glue. With any luck it will be the last replacement you ever have to buy.
Elliria
Reviewed in the United States on December 31, 2016
Even though I'm giving this five stars, I just want to mention that the little "doors" on the end of it are a bit of a pain to open, and there are some sharpish edges on the thing that you could cut yourself on. Since it's not a toy or something you'll use all the time, but a boiler part, I suppose it's to be expected that you might have to be a bit careful with it and/or wrestle with it. That aside, it's a solid unit that isn't at all flimsy, and we managed to put it onto our boiler ourselves in short order. This is our second winter with it in place and it's working like a champ. No issues with it and we'll happily buy another when/if we need it.
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