
Aquastat L4006,7,8;L6006,7,8
3 60-2104—01
Table 1. L4006, L4007, L4008 Controller (SPST Switching) Specifications
Model Application Range °F (°C)
Midscale
Differential °F
(°C)
Insertion
Switching On
Temperature
Rise
Available Options
L4007A High or low
limit
100° F to 240° F
(38° C to 116° C)
2° F or 5° F
(1° C or 3° C)
fixed,
5° F to 30° F
(3° C to 17° C)
adjustable
Horizontal
or
vertical
Breaks
-Insulation depth
1-1/2 in. or 3 in. (38
mm or 76 mm).
L4007B Circulator
100° F to 240° F
(38° C to 116° C)
5° F (3° C) fixed
or
5° F to 30° F
(3° C to 17° C)
adjustable
Vertical
Makes
-Celsius scale mark-
ings.
L4008A High or
low limit
Circulator
100° F to 240° F
(38° C to 116° C)
or
130° F to 270° F
(54° C to 132° C)
5° F (3° C) fixed,
5° F to 30° F
(3° C to 17° C)
adjustable
Remote
bulb
direct
immersion
Breaks
-Remote capillary
5-1/2 ft (1.7 m),
8-1/2 ft (2.6 m) or 10
ft (3.0 m).
-Factory-set scale
stops at 120°, 170°,
or 200° F (49°, 77°,
or 93° C)
-Celsius scale
markings.
-Front cover screw.
L4008B Circulator
100° F to 240° F
(38° C to 116° C)
5° F (3° C) fixed
or
5° F to 30° F
(3° C to 17° C)
adjustable
Remote
bulb
direct
immersion
Makes
-Capillary 5-1/2 ft
(1.7 m).
L4008Eb High limit
40° F to 80° F
(4° C to 27° C) or
130° F to 270° F
(54° C to 132° C)
Manual reset
Remote
bulb
Breaks
-Factory-set scale
stops at 140°, 200°,
or 250° F (60°, 93°,
or 121° C).
-Capillary 5-1/2 ft or
20 ft (1.7m or 6.1
m).
a Some models include copper well or fitting; specify when ordering. Also specify boiler tapping size 1/2 or 3/4 in. (13 to 19
mm) NPT and insulation depth.
b Manual reset (trip-free) switch breaks circuit and locks out when controlled medium reaches setpoint. Controlled tem-
perature must drop 20° F (11° C) below setpoint before contacts can be manually reset.
SPECIFICATIONS