Description
The Honeywell/Resideo L4006A1017 is a high-quality immersion-type Aquastat temperature controller used for high or low limit applications in boilers, storage tanks, and hydronic systems. Engineered for durability and precision, it operates within a sensing range of 100–240 °F, with user‑adjustable temperature differential control (5–30 °F), making it ideal for regulating circulator pumps or burners to maintain safe operating temperatures.
Features:
- Totally enclosed Micro Switch snap-acting switches operate on temperature rise to setpoint.
- Visible control point scale and external adjustment screw permit easy setting.
- Horizontal or vertical insertion of the sensing element.
- Direct or well immersion of the sensing element.
- Models available for strap-on mounting.
- Remote bulb model may be used to sense air temperature in ducts and in outside air sensing applications.
- Select models include heat-conductive compound.
- Select models have wells.
- UL limit rated device.
Specifications:
- Hazmat Information: UN1294, Dangerous Goods in Excepted Quantities, Class 3
- Application: High or Low limit
- Dimensions (in.): Case–5 5/8 in. high x 2 in. wide x 2 1/8 in. deep
- Dimensions (mm): Case–143 mm high x 51 mm wide x 54 mm deep
- Temperature Range (F): Maximum–150 F
- Temperature Range (C): Maximum–66 C
- Includes: 1/2 in. well – 123869A
- Mounting: Horizontal or Vertical
- 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
- Approvals, Underwriters Laboratories Inc.: UL Component Recognized: File No. MP466, Vol. 6, Sec.1, Guide No. MBPR2
- Approvals, Canadian Standards Association: Certified: File No. LR95329-1
- Operating Temperature Range (F): 100 F to 240 F
- Operating Temperature Range (C): 38 C to 116 C
- Bulb Size (in.): 3/8 in. x 2 7/8 in. copper
- Bulb Size (mm): 10 mm x 73 mm copper
- Differential Temperature (F): 5 F to 30 F adj.
- Differential Temperature (C): 3 C to 17 C adj.
- Switching Action: SPST, contacts break on temperature rise.
- Approvals, American Gas Association: AGA Certified
- Capillary Length (in.): 1 1/2 in.
- Well Spud Size (in.): 1/2 in. NPT
- Well Spud Size (mm): 13 mm NPT
- Capillary Length (mm): 38 mm











