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Main product image of High Limit & Circulator Aquastat, 10-Degree(F) High Limit, 10-Degree(F) to 25-Degree(F) Low Limit Adj Differential, L4081B1047
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High Limit & Circulator Aquastat, 10-Degree(F) High Limit, 10-Degree(F) to 25-Degree(F) Low Limit Adj Differential, L4081B1047

Brand:
Resideo
SKU:
L4081B1047
Rating:
(7)
Q&A:
(2)
High Limit & Circulator Aquastat, 10-Degree(F) High Limit, 10-Degree(F) to 25-Degree(F) Low Limit Adj Differential, L4081B1047
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$326.24 each
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In Stock
Get 4 Tue, Jul 7
Order by today, receive Tuesday
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Product Highlights

Product Highlight: Electrical Rating
0.25 A @ 0.25 to 12 Vdc, 5.1A @ 240 Vac, 8A @ 120 Vac
Product Highlight: Differential
Adjustable, Fixed, 10° to 25°F (Low Limit)
Product Highlight: Switch Action
SPST
Product Highlight: Mount
Horizontal
Product Highlight: Temperature Range (F)
110°F to 220°F, 130°F to 240°F
Product Highlight: Height
3-7/8"

Description

Features
  • An immersion type liquid-filled sensing element actuates two snap switches.
  • One switch operates as a high limit control.
  • The other switch operates as a low limit and/or circulator control, depending on the model.
  • Controller may be mounted in any positioning and needs no leveling.
  • Separate, easy-to-read, calibrated dial and setpoint adjustments for each switch.
  • Differential adjustment on low limit or circulator switch.
  • All adjustments accessible inside front cover.
  • Push-in terminals for quick connecting.
  • Single sensing element for easy installation.
  • Two SPST snap switches act independently at respective temperature settings.

Product Specifications
  • Description: High Limit and Circulator Aquastat Controller with High limit : 10 F fixed; low limit: 10-25 F adj. differential
  • Application: High Limit and Circulator
  • Operating Range, Low Limit (F): 110 F to 220 F
  • Operating Range, Low Limit (C) : 43 C to 104 C
  • Operating Range, High Limit (F): 130 F to 240 F
  • Operating Range, High Limit (C): 54 C to 116 C
  • Differential Temperature (F): High limit : 10 F fixed; low limit: 10-25 F adj.
  • Switching Action: SPST: High Limit & Circulator
  • Electrical Ratings (AFL): 8A @ 120 Vac
  • Electrical Ratings (AFL): 5.1A @ 240 Vac
  • Electrical Ratings (ALR): 48A @ 120 Vac
  • Electrical Ratings (ALR): 30.6A @ 240 Vac
  • Electrical Ratings: 0.25 A @ 0.25 to 12 Vdc
  • Electrical Rating (ignition): Transformer
  • Load: 360 VA
  • Spud Size (in.): 3/4 in. - 14 NPT
  • Dimensions (in.): 3 7/8 in. high x 4 1/8 in. wide x 2 3/4 in. deep.
  • Dimensions (mm): 98 mm high x 105 mm wide x 70 mm deep.
  • Insulation Depth (in.): 1 1/2 in.
  • Insulation Depth (mm): 38 mm
  • Mounting: Horizontal
  • Operating Humidity Range (% RH): 0 to 95% RH,
  • 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: File No. MP466, Vol. 12, Sec. 4, Guide No. MBPR2
  • Approvals, Canadian Standards Association Certified: File No. LR95329-1

Specs

Application:

High Limit

Circulator Control

Switch Action:

SPST

Well Spud Size:

3/4" to 14 NPT

Temperature Range (F):

110°F to 220°F

130°F to 240°F

Electrical Rating:

0.25 A @ 0.25 to 12 Vdc

5.1A @ 240 Vac

8A @ 120 Vac

Electrical Ratings (ALR):

30.6A @ 240 Vac

48A @ 120 Vac

Electric Ratings (Ignition):

Transformer Load: 360 VA

Max Temp Differential:

10°F

25°F

Differential:

Adjustable

Fixed

10° to 25°F (Low Limit)

Min Temp Differential:

10°F

Max Ambient Temp (°F):

265 F at Sensing Element

150 F at Switches

Height:

3-7/8"

Width:

4-1/8"

Depth (Inches):

2-3/4"

Well Included:

No

Mount:

Horizontal

Operating Humidity:

5% to 95% (non-condensing)

Min Temp (F):

110°F

Contact

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Showing 1-7 of 7 reviews

Easy set up and controls

I had this installed in about 30 minutes. You will need thermo compound. This controls my wood boiler fan and circulator pump line voltage. Very well built.
Tj
Brazil Indiana
8 months ago
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outstanding product

works great
Aneta
NY
4 years ago
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Great assistance picking Aquastat

Product works great but what I was more pleased with was the assistance I received in cross referencing a 30 year old unit to its current day equivalent. My local supplier could not figure it out and I took a chance buying online and it worked out great. Installed in less than an hour and my wood boiler is operational again.
Wood Boiler
Massahiusetts
9 years ago
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works great

Works great use to replace old L4081B aquastat. No longer needed to prevent circulator from running when water temp drops low. Dont use boiler for Domestic hot water. installed hot water heater
Donald
Atl. Ga
11 years ago
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Fantastic ... in every way!

My regular plumber claimed the Aquastat was no longer available and that I would need to replace the boiler. I searched and found PexSupply having the product and at a reasonable price! It was ordered and within a day it had arrived--perfect! Can't recommend PexSupply any higher than that! Fantastic!!!
Cambridge
Washington, DC
13 years ago
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Perfect Aquastat for My Boiler

My gas-fired, warm-start, hot-water heating boiler originally had an aquatstat with a simple single-pole switch that controlled only the burner (the cirulator pump was controlled by the wall thermostat). During long heat calls, the boiler temperature could get dragged down close to the 140-deg flue condensation threshold. With this L4081B aquastat, the circulator is stopped when the boiler temp drops below a setpoint, allowing the burner to catch back up before the circulator is restarted. It takes some experimenting to establish the optimum settings, which requires a reasonably accurate boiler temperature gauge. The probe fits into a standard thermowell. Heat conductive compound (not supplied with the aquastat) should be applied to the probe.
Doug
U.S. Midwest
14 years ago
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aquastat

worked just like it should
Ray
08322
14 years ago
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Product Q&A

2 Questions
2 Questions
ASK A QUESTION

Q: Does this product replace the Honeywell L4062B 1008 Aquastat Relay? Thanks. -- Fran Hopkins

Asked by Fran 10 years ago

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Verified Author and ReplyVerified Reply- Supplyhouse Staff

Yes that is the closest replacement for the L4062B 1008l.

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Q: Does this product replace the honeywell l4081b1013? Thanks

Asked by Andy 12 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

Yes, The L4081B1047 is the direct replacement for the Honeywell unit.

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