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High Limit Vertical Mount Aquastat Relay, 15-Degree(F) differential w/ 50VA Transformer, L8148E1299
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MANUALS (2)
Product Highlights
Description
Features:
- High limit opens burner circuit only.
- Select models include transformer and accessory terminals for adding a remote low limit controller.
- Case available for horizontal or vertical mounting.
- Requires a 24 Vac thermostat with heat anticipator set at 0.2A.
- Hazmat Information: UN1294 Toluene
- Application: High Limit
- Dimensions (in.): 6-1/8 in. high x 4-5/16 in. wide x 3-1/8 in. deep
- Maximum Safe Operating Pressure (psi): Immersion Well: 255 psi
- Maximum Safe Operating Pressure (kPa): Immersion Well: 1757 kPa
- Temperature Range (F) Maximum--150 F with 1.2 A 24 V load; 77 F with 1.4 A 24 V load
- Temperature Range (C) Maximum--66 C with 1.2 A 24 V load; 25 C with 1.4 A 24 V load
- Includes 50 VA transformer
- Mounting Vertical Mount
- Electrical Ratings Low Voltage: 0.8 A max. @ 24 Vac; 0.25 A @ 0.25 to 12 Vdc; At Locked Rotor-- 44.4A @ 120 Vac: 22.2A @ 240 Vac
- Frequency 60 Hz
- Approvals, Underwriters Laboratories Inc. UL Listed: File No. MP466, Vol. 13, Sec. 2, Guide No. MBPR2.
- Approvals, CSA Certified: File No. LR95329-1
- Electrical Connections: Quick-Connect / Screw
- Operating Humidity Range (% RH): 0 to 95% RH, non-condensing
- Voltage: 120 Vac
- Operating Temperature Range (F): High Limit-- 180 F to 240 F
- Operating Temperature Range (C): High Limit-- 82 C to 116 C
- Differential Temperature (F): 15 F fixed
- Switching Action: SPST: High Limit & Circulator
- Anticipator Setting: 0.2 A
- Capillary Length (in.): 4-1/2 in.
- Insulation Depth (in.): 1-1/2 in. to 3 in. less well
- Insulation Depth (mm): 38 mm to 76 mm less well
- Capillary Length (mm): 114 mm
- At Full Load-- Low Voltage: 0.8 A max. @ 24 Vac: Line Voltage: 7.4 A @ 120 Vac: 3.7 A @ 240 Vac
- At Locked Rotor-- Line Voltage: 44.4 A @ 120 Vac: 22.7 A @ 240 Vac; Millivolt--0.25 A @ 1/4 to 12 Vdc
- At Full Load-- 7.4 A @ 120 Vac: 3.7 A @ 240 Vac
- At Locked Rotor-- 44.4 A @ 120 Vac: 22.2 A @ 240 Vac
Specs
| Frequency: | 60 Hz 60 Hz |
|---|---|
| Application: | High Limit |
| Switch Action: | SPST |
| Electrical Rating: | 0.25 A @ 0.25 to 12 Vdc Burner: 3.7 A @ 240 Vac Burner: 7.4 A @ 120 Vac Circulator: 3.7 A @ 240 Vac Burner: 0.8 A max @ 24 Vac Circulator: 7.4 A @ 120 Vac |
| Electrical Ratings (ALR): | Burner: 22.2 A @ 240 Vac Circulator: 44.4 A @ 120 Vac Burner: 44.4 A @ 120 Vac Circulator: 22.2 A @ 240 Vac |
| Differential: | Fixed |
| Max Temp Differential: | 15°F |
| Height: | 6-1/8" |
| Width: | 4-3/8" |
| Depth (Inches): | 3-1/8" |
| Operating Humidity: | 0% to 95% (non-condensing) |
| Mount: | Vertical |
| Max Ambient Temp (°F): | 77F with 1.4A 24V Load 150F with 1.2A 24V Load |
| Connection Type: | Quick-Connect |
| Capillary Length: | 4-1/2" |
| Anticipator Rating: | 0.2 A |
| Voltage: | 120v |
| Max Pressure (PSI): | 255 (Immersion Well) |
| Min Temp (F): | 180°F |
| Max Temp (F): | 240°F |
| Temperature Range (F): | 180°F to 240°F |
Questions?
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Built In Obsolence
YES
Three defective parts in a row
As advertised
Bought this item as a spare. Fast delivery.
A real performer
I would purchase this again
Work just as desired, very happy with store
great product and even better company
Overnight delivery
Great Service
Product Q&A
14 QuestionsQ: I have a slant fin boiler circa 1988 that needs a new L8148E aqua stat. I cannot find the last four numbers on the existing unit. What is the difference between the L8148E1265 and 1299?
Asked by Gettingcold 3 years ago
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Verified Reply- SupplyHouseHello, thanks for writing in. These two aquastats are very similar, however, they have different electrical ratings.
Q: I have aquastat relay L8148E 1216. Is your part L8148E 1265 some?
Asked by JIM the fixer 11 years ago
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Verified Reply- Supplyhouse StaffThat model is the closest current replacement.
Q: I just replaced an old L8148E Aquastat with a L8148E 1265. I kept my upper limit on the older unit at 150. The new unit's lowest upper limit is 180 (maybe a little lower). I have baseboard in the basement and cast iron radiators on the main floor. Is the 180 temperature OK for both types of radiator or should I replace the 1265 with the 1299? Everything seems to be working OK and the boiler shuts off at 175 or so. Thanks!
Asked by LEDWatch 11 years ago
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Verified Reply- Supplyhouse Staffyes 180 is fine for baseboard or cast iron radiators.
Q: I have a old Buderus boiler hot water , It has been starting to have issues with pressure side so I put on a new Prv and a new expansion tank but I am still having issues so what i do is fill boiler to 12 psi and then shut off water supply I will end up over pressure and then the relife blows and then im down to zero . Could the aqaustat be the reason and if so I have a Type L8148E combined circulator load I need to know if this model will work in replacement and also if you think this may help my problem Thanks
Asked by chris 12 years ago
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hello did you check the pressure in expansion tank with a pressure gauge? should be 12psi cold and 0 psi in boiler,then fill boiler to 12psi what temp is the aquastat set at and is the boiler going higher than set temp should be set @ 180F sometimes you have to bleed a little pressure off from a cold start if all correct,boiler shouldn't go over 30psi and blow relief
Aquastat is not your problem with respect to pressure. Sounds like your expansion tank is probably waterlogged. What kind of pressure reducing valve did you put in?
Q: I have a Honeywell L8148E-1000 from an older Dunkirk boiler. Is the L8148E-1265 the correct replacement for this discontinued aquastat?
Asked by Dave 13 years ago
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The 1265 control is most often used for pex tubing where the temp high end setting should not exceed 180 degrees which is a safe setting for a hot water system. A higher setting would melt the pipe if metal pipe is used a different control with a higher temp range can be used.
hello you consider trying a electronic aquastat, i have been installing HYDROLEVEL (MODEL 3250 IS A GOOD ONE) they can be installed on almost any old boiler and have many energy saving features and are not expensive but dont know what model of boiler you have, so cant say for sure if its a good choice
Q: I have a crown abf-105sdp boiler I need to replace the aquastat relay type L8148E do I need the 1265 or the 1299
Asked by GG 13 years ago
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according to the wiring diagram for boiler with intermittent ignition the original control was a L8148E 1257 that part # changes to a L8148E 1265 which has the plug for the damper motor
1265 if pex tubing used, reason the temp range of 1299 starts at 180 add diff of 15 degrees and you will likely melt pex tubing.
The L8148E1257 is the listed unit for this boiler. The 1265 will work for you. Set the high limit at the lowest setting - 180 degrees.
Q: I have a Honewell L8148E1190 aquastat. Is the L8148E1265 or the L8148E1299 the correct replacement?
Asked by tomjulery 13 years ago
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Verified Reply- PexSupply StaffL8148E1265 is the recommended replacement.
All, In 2010 I asked the following question Message: I have to order a Honeywell L8148E auqastat relay. I noticed you have 2 models, the L8148E1265 and the L8148E1299. What is the difference? Sincerely, Anno J. Cazemier. And below the answer I got. Hello, The unit ending in 1265 has a 40 VA transformer where the unit ending in 1299 has a 50 VA transformer. Other then the voltage rating they are the same. If there is any other way we can help or if you have any questions or concerns, please feel free to reply to this email. Have a great day. I do not know what is different to the unit ending in 1190 Met vriendelijke groeten,
Q: spec sheet for the 1265 and 1299 both state the operating range is 180 to240degree. is this correct
Asked by captain dick 13 years ago
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Verified Reply- PexSupply StaffYes, this is correct.
The spec is correct. This unit for metal pipe heating system only mainly steam
Q: i have a honeywell l8148e1273 ,what is the replacement number.
Asked by donzo 14 years ago
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Verified Reply- PexSupply StaffThe replacement you need is part L8148J1009.
hello you should and may have to replace with the exact same control some of these HW controls are OEM only,specially made for that boiler the L8148E-1273 is for a slant fin boiler
Q: DOES THE BOILER HAVE TO BE DRAINED TO CHANGE THE L8148E AQUASTAT RELAY
Asked by ED 14 years ago
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NO, you don't need to drain the boiler,
No. The sensor fits into a well and is not in direct contact with boiler water.
No, I did not drain the boiler when I changed this and it works fine.danm
hello you don't have to drain the boiler, the bulb on the end of the capillary tube inserts into the well on the boiler the old control may have set screws or clamp to disconnect from the well also use the heat conductive grease that comes with it good luck
Not normally, unless in addition to the aquastat you also needed to change the hollow well on the boiler casting into which the capillary temperature sensor on the back of the aquastat inserts.