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L8100A,B,C Aquastat
CONTROLLERS
®
SPECIFICATIONS
IMPORTANT
The specifications given in this publications do not
include normal manufacturing tolerances. Therefore,
an individual unit may not exactly match the listed
specifications. Also, this product is tested and
calibrated under closely controlled conditions, and
some minor differences in performance can be
expected when those conditions are changed.
Models:
L8100A Aquastat® Controller. Regulates water
temperature. Includes energy cutoff (ECO) switch that
breaks controller circuit on a temperature rise above
the setpoint.
L8100B Aquastat® Controller. Regulates water
temperature. Has a second sensing bulb that minimizes
stacking by sensing the average tank temperature.
Includes ECO switch which breaks controller circuit on
a temperature rise above the setpoint.
L8100C Aquastat® Controller. Regulates water
temperature. Has a second sensing bulb that minimizes
stacking by sensing the average tank temperature.
Electrical Ratings:
2A maximum at 24 Vac.
Differential:
Fixed, 5°F (3°C) for controller: 20°F (11°C) for ECO switch.
Maximum Tank Temperature:
210°F (99°C).
Temperature Range:
L8100A: 100°F to 240°F (38°C to 116°C) with factory set
stop to prevent setting above 160°F (71°C).
L8100B,C: 100°F to 180°F (38°C to 82°C).
Pressure Rating:
255 psi (1758 kPa).
Sensing Bulb:
Liquid (toluene) filled; 3/8 in. (10 mm) capsule.
Immersion Well:
1/2 in (13 mm) or 3/4 in. (19 mm) NPT. See Fig. 2 for
dimensions. All zinc plated except L8100B1094 and
L8100B1185.
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number, or specify:
1. Model number.
2. Application.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Home and Building Control Sales Office (check white pages of your phone directory).
2. Home and Building Control Customer Relations
Honeywell, 1885 Douglas Drive North
Golden Valley, Minnesota 55422-4386
In Canada—Honeywell Limited/Limitee, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service
offices in all principal cities of the world.
60-2336—3
Capillary Length (for Remote Bulb):
24-5/8, 30, 39, 42, or 54 in. (625, 762, 991, 1067, or
1372 mm).
Insertion Depth:
See Fig. 2.
Insulation Depth:
See Fig. 2.
Finish:
Gray.
Dimensions:
See Fig. 1 for controller dimensions; see Fig. 2 for immersion
well dimensions.
1
(25)
15/16
(24)
5-5/8
(144)
2 (51)
Fig. 1. Approximate dimensions of the L8100 Aquastat®
Controller in in. (mm).
2
KNOCKOUT FOR 3/4 IN. (19 MM)
CONDUIT
SIMILAR KNOCKOUT
ON BOTTOM
2-1/8 (54)
ELEMENT
3/4
(19)
M4747
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