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L4006,7,8; L6006,7,8 AQUASTAT
®
CONTROLLERS
60-2104—10 6
L4006G High limit
and
circulator
control
100° F to 200° F
(38° C to 93° C)
10° F (6° C) fixed Horizontal Two switches
break
simultaneously
— External adjustment knob.
— Insulation depth 4 in.
(102 mm).
— Factory-set stop at
160° F (71° C).
— Celsius scale markings.
— Without well.
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 markings.
L4008A High or low
limit
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).
L4008E
b
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).
Table 1. L4006, L4007, L4008 Controller (SPST Switching) Specifications. (Cont.)
Model Application
Range
°F (°C)
Midscale
Differential
°F (°C) Insertion
a
Switching On
Temperature
Rise Available Options
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 temperature
must drop 20° F (11° C) below setpoint before contacts can be manually reset.