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High Limit Protection, Low Limit & Circulator Vertical Mount Triple Aquastat Relay, High=10-Degree(F), Low Limit=10-25-Degree Adj Differential, L8124A1015
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MANUALS (3)
Product Highlights
Description
- Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems.
- Provide multizone control by using a separate circulator and R845 Relay for each zone.
- Include diaphragm powerhead and Micro Switch+ assembly that respond to temperature changes in boiler water.
- Mount directly to boiler.
- Select models include large transformers and extra terminals for supplying power to low voltage zone
- Require 24 Vac thermostat with heat anticipator set at 0.2 A (plus current draw of gas valve on L8124E).
Product Specifications
- Description: High Limit Protection, Low Limit and Circulation Control Triple Aquastat Relay with High limit : 10 F fixed; low limit: 10-25 F adj. Differential
- Application: High Limit Protection, Low Limit and Circulation Control
- Operating Range, Low Limit (F): 110 F to 220 F adj.
- Operating Range, Low Limit (C): 43 C to 104 C adj.
- Operating Range, High Limit (F): 130 F to 240 F adj.
- Operating Range, High Limit (C): 54 C to 116 C adj.
- Differential Temperature (F): High limit : 10 F fixed; low limit: 10-25 F adj.
- Maximum Safe Operating Pressure (psi): 200 psi on outside of immersion well, 100 psi on capsule if inserted directly.
- Maximum Safe Operating Pressure (kPa): 1378 kPa on outside of immersion well, 690 kPa on capsule if inserted directly.
- Electrical Ratings (burner AFL): 7.4 A @ 120 Vac
- Electrical Ratings (burner AFL): 3.7 A @ 240 Vac Electrical Ratings (burner ALR): 44.4 A @ 120 Vac
- Electrical Ratings (burner ALR): 22.2 A @ 240 Vac
- 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 Voltage: 120 Vac
- Dimensions (in.): 6 1/8 in. high x 4 3/8 in. wide x 3 1/16 in. deep
- Dimensions (mm): 156 mm high x 111 mm wide x 78 mm deep
- Insulation Depth (in.): 3 in.
- Insulation Depth (mm) 76 mm
- Mounting: Vertical Mount
- Operating Humidity Range (% RH): 0 to 95% RH, non-condensing
- Maximum Ambient Temperature (F): 150 F at switches, 265 F at sensing element.
- Maximum Ambient Temperature (C): 66 C at switches, 129 C at sensing element.
- Approvals, Underwriters Laboratories Inc UL Listed (models with well): File No. MP466, Guide No. MBPR; UL Component Recognized (models without well): File No. MP466, Guide No. MBPR2
- Approvals, Canadian Standards Association Certified: File No. LR1620, Guide No. 400-E-O
Specs
| Application: | High Limit Low Limit Circulator Control Triple Aquastat Relay |
|---|---|
| Temperature Range (F): | 130°F to 240°F 110°F to 220°F |
| Electrical Rating: | Circulator: 7.4 A @ 120 Vac Burner: 3.7 A @ 240 Vac Burner: 7.4 A @ 120 Vac |
| Electrical Ratings (ALR): | Burner: 22.2 A @ 240 Vac Burner: 44.4 A @ 120 Vac Circulator: 44.4 A @ 120 Vac |
| Differential: | Adjustable 10° to 25°F (Low Limit) Fixed |
| Max Temp Differential: | 25°F 10°F |
| Min Temp Differential: | 10°F |
| Height: | 6-1/8" |
| Width: | 4-3/8" |
| Depth (Inches): | 3-1/16" |
| Operating Humidity: | 0% to 95% (non-condensing) |
| Max Ambient Temp (°F): | 265 F at Sensing Element 150 F at Switches |
| Mount: | Vertical |
| Voltage: | 120v |
| Max Pressure (PSI): | 100 (Direct Immersion) 200 (Immersion Well) |
| Connection Type: | Quick-Connect |
Questions?
Product Reviews
The product is a perfect fit
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Quality product.!
Great band for your buck
Product Q&A
3 QuestionsQ: What is the difference between the L8124A1007 and the L81241015? I need to replace an older model L8124A (part number I was given is L8124A C,J) for an oil boiler.
Asked by Mel 14 years ago
Add your answer
Verified Reply- PexSupply StaffThe L8124A1015 model has a longer capillary (3", versus. 1-1/2" for L8124A1007). L8124A1015 also comes with a ground screw.
I dont know off hand, some are the same but horizontally mounted versus vertical ,,,the one I bought was the wrong type,,,,but I used the casing of the old one and the guts off the new part ,,,works great.......most of the triple aquastats are the same , look at yours ...is it vertical or horizontal...then open it and see what it has for adjustments.....is it a fixed differential or does it have the third with a ten to 25 degreee adjustment.....Mine had the same A.C.J after the numbers, ,it is not in my house hold so I cant look at it....if you could look at specs of yours which I could not do on pex site ,you could compare both specs,,,,,
Mel, The simple truth about the difference between the L8124A1007 and the L8124A1015 is the insulation depth. Other than that, if you have an older L8124A series control you would need the remaining 4 digits after the A in order to cross reference it to the newer models. Steve
The L8124A 1015 has line voltage burner control, 130-240F Hi Limit, 10F fixed differential, 110-220F Lo Limit, 10-25 adjustable differential. I have a new one which I bought from pexsupply by mistake. I needed a relay with low voltage burner control. I was also confused by the new numbering of the relays. Would be interested in finding a home for the relay that I have. Would also be interested in finding the right relay. I will see if I can figure out what the L81241007 is from your website.
The units are electrically and mechanically the same (1007 and 1015) except for the temp sensing bulb. One is designed for a 1-1/2 to 2 inch insulated jacket on the boiler and the other goes directly in the temp well, not through insulation. You will have a temperature offset if you use the wrong one. The original control will have a tag on it somewhere with the complete number including the 1007 or 1015.
Q: my model is L8124A,C 1102. will this work?
Asked by 15 years ago
Add your answer
Verified Reply- PexSupply StaffThe manufacturer recommends L7224U1002 to replace L8124C1102. We are unable to reference L8124A,C 1102.
Q: Can this be used on oil and gas boilers? And, please, what is the difference between this model and the L8124G1020 model?
Asked by Peas 15 years ago
Add your answer
Verified Reply- PexSupply StaffIt is primarily used for oil, but may be used for gas if you have 120v controls to be used in conjunction with it. The only difference between the L8124A and the L8124G is that the L8124G has a larger transformer and terminals to handle up to 2 additional zone valves.