Name: Resideo L4006A1017/U Aquastat, Breaks on Rise, 100-240F Range, 5-30F Adjustable Differential
Brand: Resideo
SKU: HONE-L4006A1017/U
Price: 254.83 USD
Availability: InStock

Aquastat, breaks on rise, 100-240F range, 5-30F adjustable differential

Resideo Aquastat, breaks on rise, 100-240F range, 5-30F adjustable differential

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Electrical Ratings	Millivolt--0.25 A @ 0.25 to 12 Vdc; At Full Load-- 8A @ 120 Vac: 5.1A @ 240 Vac; At Locked Rotor-- 48A @ 120 Vac: 30.6A @ 240 Vac
Operating Temperature	100 F to 240 F
Mounting	Horizontal or Vertical
Application	High or Low limit
Includes	1/2 in. well - 123869A
Dimensions	Case--5 5/8 in. high x 2 in. wide x 2 1/8 in. deep
UL	UL Component Recognized: File No. MP466, Vol. 6, Sec.1, Guide No. MBPR2
CSA	Certified: File No. LR95329-1
AGA	AGA Certified
Hazmat Information	Dangerous Goods in Excepted Quantities
Temperature Range (F)	Maximum--150 F
Bulb Size (in.)	3/8 in. x 2 7/8 in. copper
Differential Temperature (F)	5 F to 30 F adj.
Switching Action	SPST, contacts break on temperature rise.
Capillary Length (in.)	1 1/2 in.
Well Spud Size (in.)	1/2 in. NPT

The L4006A1017 is a control from Resideo (Honeywell Home) that senses boiler water temperature and switches the burner, the circulator, or both. It operates over a 100–240 °F range with an adjustable differential.

The aquastat is the control that keeps a hydronic boiler inside its working band. It holds the water hot enough to serve a call for heat and shuts the burner down before the boiler reaches a temperature the relief valve would have to handle.

The adjustable differential sets how far the water has to cool before the burner is allowed to fire again. A wide differential means longer, less frequent burns; a narrow one holds temperature tighter at the cost of more cycling.

When you replace an aquastat, match the temperature range, the switch action and the differential to the control coming out, not to the boiler nameplate. A boiler will happily run on a control with the wrong range — it will simply cycle badly, or trip a limit that was never meant to be the working control.

The sensing bulb belongs in an immersion well, filled with heat conductive compound, threaded into the tapping the boiler manufacturer provided for it. A bulb strapped to the outside of a pipe reads the pipe, not the water, and it reads it late.

Brand: Resideo (Honeywell Home)
Manufacturer Part #: L4006A1017/U
Temperature range: 100–240 °F
Differential: Adjustable
UPC: 085267048590
Shipping weight: 1.0 lb
Category: Aquastats & Wells

Full Specifications

Application	High or Low Limit Control
Color	Metallic
Compatible With	Hot Water, Hydronic Heating Systems
Includes	1/2 in. well - 123869A
Operating Temperature (Min)	100 °F, 38 °C
Operating Temperature (Max)	240 °F, 116 °C
Well Spud Size	1/2 in 14 NPT, 13 mm 14 NPT
Capillary Length	1 1/2 in
Product Height	5.63 in
Product Length	2 in
Product Width	2.13 in
Hazmat Information	Dangerous Goods in Excepted Quantities