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Environmental & Combustion Controls
Single Function
Single contact temperature and for thermowell mount, strap-on, and remote sense hydronic applications. Single SPST NO and NC, SPDT switch configurations.

Compare Select and Compare the Product Models below.  Limited to five.  Some groupings may not be comparable.
  
L4006
Immersion Type Controllers
Learn More
L4008
Remote Bulb Controller
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L4103
Combination Aquastat® and High Limit Controller
Learn More
L6006
Immersion Type Controllers
Learn More
L6008
Remote Bulb Controller
Learn More
L8100
Immersion Type Controllers
Learn More
Compare Select and Compare the Product Models above.  Limited to five.  Some groupings may not be comparable.
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Application
Aquastat ControllerCirculator
Circulator Control and High Limit or Low LimitCirculator Control and Low Limit
High LimitHigh Limit; Manual Reset
High Limit; strap-on mounting on well mount.High or Low limit
Immersion type controllers for hydronic heating systems that turn off the burner whenever the boiler water temperature rises to the set point.Low Limit and Circulator
Panel-Mounted immersion type temperature control that provides high limit protection for domestic hot water heaters, hydronic heating equipment, and warm air applications.Two-stage Aquastat Controller to cycle two-stage gas valve
Insulation Depth (in.)
1 1/2 in.1 1/2 in. to 3 in.
1 1/2 in. to 3 in. less well1/2 in.
2 1/4 in.3 in.
4 in.4 in. less well
controller well: 2 1/4 in. remote well: 1 1/2 or 2 1/2 in.
Bulb Size (in.)
3/8 in.3/8 in. x 2 7/8 in. copper
Spud Size (in.)
1 1/2 in.-14 BSP. Tr, EXT.1/2 in.
1/2 in. - 14 NPT3/4 in.
3/4 in. - 14 NPT3/4 in. NPT
Capillary Length (in.)
1 1/2 to 3 in.102 in.
120 in.1425 mm
240 in.36 5/8 in.
36 in.39 in.
42 in.54 in.
59 in.6 in.
66 in.72 in.
78 in.96 in.
Switching Action
2 SPDT switchesBreaks contact on temperature rise to set point.
SPDTSPST, contacts break on temperature rise.
SPST, contacts make on temperature rise.
Operating Temperature Range (F)
100 F to 180 F100 F to 200 F
100 F to 230 F100 F to 240 F
100 F to 240 F stop set at 150 F (Scale marked- Hot-Normal-Warm)100 F to 270 F
105F to 230F110 F to 210 F
120 F to 160 F130 F to 230 F
130 F to 270 F140 F to 240 F
155 F to 230 F160 F to 230 F
180 F to 240 F40 F to 180 F
60 F to 160 F65 F to 200 F
Operating Point: 230 F
Electrical Ratings (Full Load)
1.3A @ 240 Vac; 2.6A @ 120 Vac5.1A @ 240 Vac; 8A @ 120 Vac
Electrical Ratings (Locked Rotor)
30.6A @ 240 Vac; 48A @ 120 Vac7.8A @ 240 Vac; 15.6A @ 120 Vac
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