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MANUALS (3)
Product Highlights
Description
- Burner Control Circuit at 120V (A): 7.4
- Application: Hydronic Heating Systems, Domestic Hot Water Service
- Differential: 130 to 240 F
- Full Load Amps at 240VAC: 3.8
- Full Load Amps at 120V: 7.5
- Locked Rotor Amps at 120V:44.4
- Mounting:Vertical
- Temp. Range:5 to 20 F
- Locked Rotor Amps at 240V:22.2
- Item:Aquastat Controller
- Height (In.):7-1/8"
- Depth (In.): 2-5/8"
- Width (In.): 4-1/4"
- Type: Oil Electronic Primary
- Includes: High Limit Protection With Low Limit And Circulator Control
- Requires: 25 Volt Thermostat
- Weight: 2.60
Specs
| Application: | Oil Aquastat Controller |
|---|---|
| Temperature Range (F): | 110°F to 220°F |
| Electrical Rating: | 44.4 A inrush Circulator: 7.4 A @ 120 Vac Burner: 7.4 A @ 120 Vac |
| Differential: | Adjustable 5° to 20°F 10° to 25°F (Low Limit) |
| Max Temp Differential: | 25°F 20°F |
| Min Temp Differential: | 10°F 5°F |
| Height: | 7-1/8" |
| Width: | 4-1/4" |
| Depth (Inches): | 2-5/8" |
| Operating Humidity: | 0% to 95% (non-condensing) |
| Max Ambient Temp (°F): | 150°F |
| Min Ambient Temp (°F): | -30 F |
| Mount: | Flush Vertical Horizontal |
| Voltage: | 120v |
| Frequency: | 60 Hz |
| Max Power Consumption: | 2000 VA |
Questions?
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Product Reviews
Most Liked Positive Review
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Hope this one lasts longer
Most Liked Negative Review
Defective out of the box
IT A RESDIO
OIL AQUASTAT
Perfect fit
Yes
Exceeded my expectations
Direct replacement for older honeywell
yes
I would buy from this company again and probably will
I would purchase yes I would purchase this product again
I would buy this product again if needed
Product Q&A
9 QuestionsQ: can i use this model to replace an L8151A, triple aquastat relay?
Asked by liz 12 years ago
Add your answer
You don't give a model number of the unit so it is impossible to say. L8151A does not appear in Honeywell's list of multifunction aquastats, which would indicate it is obsolete. In general, almost any new aquastat can be used to replace your old one. It depends on your system and what you need the control to do. To quote from the Honeywell site: "The L7224U replaces the L8124A, L8124C, L7124U, L7148A, L7248A,C, L7224A,C, and L8148A Controllers"
Not sure about exact model number, but suspect it was the one I replaced. It was relay based and one of the relays had gone bad. Sent from my Galaxy S4 Pardon my brevity
Q: Can you recommend an electronic thermostat which can be used with this aquastat?
Asked by Tom 14 years ago
Add your answer
I have been using Hunter® Digital thermostats (on my 3 Zone system) for many years, including before I upgraded to the 7224U. These can be programmed to turn the system on in the morning, set the temperature back when you leave for work, turn the heat back up before you get home and turn it down again when you're ready to go to bed *on weekdays*. Weekends they simply turn the heat up in the morning and back down at night. (Sometimes these are called 5/2 models) The hardest part is remembering to change the battery once a year. I believe the brand is not as important as correct installation (pretty easy) and operation of the thermostat within recommended parameters to save fuel. This can eve be accomplished with manual analog thermostats if willing and able to remember to raise and lower the temperature at the appropriate times. Most people can't do that on a consistant basis-hence the automatic thermostat's popularity. Prices start around $40 (maybe a little less for some imports, open box, etc.) up to a few hundred dollars for the color touch-screen, "smart" models with multiple settings for 7 days a week. Honeywell, Carrier, Bryant, Goodman are just a few of the brands out there. If you watch for sales, you can pick up a 5/2 type at a big box store for less than $50 that can do what you need. You can expect to save 3 times the cost in the first year. If you need the flexibility of a 7 day unique program, expect to pay at least 2-4 times the cost of the 5/2. (We use them in our church because of the different ministries at different times on different days-the rest of the time heat is basically off.) BTW, I recommend the Outdoor Reset Module for the 7224U. I think it has saved at least it's cost-but do your research-Honeywell prices them at $300+ and you can find them for 60-70% off that price if you look hard enough.
Honeywell Digital thermostat
any thermostat you like, just hook up to the tt terminals. or use the 3 conductor enviracom series thermostats. make sure you at least use the enviracom outdoor reset module for fuel savings.
Q: Can I use this to replace an L8148A-1140?
Asked by 14 years ago
Add your answer
Verified Reply- PexSupply StaffYes, you can.
Q: how can i turn the temp. up for the hot water...Bill
Asked by bomber 15 years ago
Add your answer
Verified Reply- PexSupply StaffPlease refer to the manual below: http://s3.pexsupply.com/manuals/1290632145133/41903_PROD_FILE.pdf
Q: Is there a difference between the L7224 and the L7224U aquastat's? Is one an older model?
Asked by Fish 15 years ago
Add your answer
Verified Reply- PexSupply StaffL7224A and L7224C aquastats are older models that have been discontinued. The only two L7224 models currently available are L7224R1000 and L7224U1002.
Q: does the unit comes with the sensing bulb?
Asked by Rey 15 years ago
Add your answer
Verified Reply- PexSupply StaffYes, this unit comes with the sensing bulb.
Q: What is the sensor lead length supplied with the L7224U Aquastat? Can leads be extended with t-stat wire for remote flush mount, or will this alter the sensor calibration?
Asked by Suter 15 years ago
Add your answer
Verified Reply- PexSupply StaffThe length is 12”. Please do not add additional thermostat wire to the sensor, as this your safety control. Honeywell offers a 4’ sensor (part number 50001464-005).
Q: Does l7224u have a outdoor sensor? thank you tom
Asked by tom 15 years ago
Add your answer
Verified Reply- PexSupply StaffOutdoor sensors W8735S1000 and W8735S1008 can be used with the L7224U Aquastat for applications that require an outdoor reset control.
It has the connection for the outdoor sensor, but it doesn't come with it.
Q: Why does my Aquastst keep showing a code 10? Burner is working Fine. My service man replaced one this unit still shows code 10. Should this be of concern to me?
Asked by 15 years ago
Add your answer
Verified Reply- PexSupply StaffPlease see pages 8 and 9 of the manual ( http://s3.pexsupply.com/manuals/1290632145133/41903_PROD_FILE.pdf ). You probably just need to reconfigure your outdoor reset settings.