Product Overview

L4081A,B AND L6081A,C MULTIPLE AQUASTAT® CONTROLLERS
60-2105—6 2
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.
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 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
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
SPECIFICATIONS
IMPORTANT
The specifications given in this publication do not
include normal manufacturing tolerances. Therefore,
this 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 if those conditions are changed.
TRADELINE® Models
TRADELINE® models are selected and packaged to provide
ease of stocking, ease of handling, and maximum
replacement value. TRADELINE model specifications are the
same as those of standard models, except as noted below.
TRADELINE Model Available: L6081A Multiple Aquastat
Controller.
Additional Features: TRADELINE pack with cross reference
label and special instruction sheet, tube of heat-conductive
compound and setting stops.
Standard Models
Refer to Table 1 for model specifications.
Ranges:
High Limit: 130°F (55°C) to 240°F (116°C). Stops burner if
boiler temperature exceeds setpoint.
Low Limit: 110°F (44°C) to 220°F (105°C). Controls burner
during thermostat off periods to maintain boiler water
temperature.
Circulator: 110°F (44°C) to 220°F (105°C). Permits circulator
operation only if boiler water temperature exceeds low limit
setting.
Table 1. Model Specifications.
a
Some models are shipped less well; if well is needed, refer to form 68-0040 for ordering information.
b
Device is less case and cover.
Scale Markings:
For Fahrenheit models:
High Limit: 160, 180, 200, 220°F.
Low Limit or Circulator: 120, 140, 160, 180, 200°F
For Celsius models:
High Limit: 55, 65, 75, 85, 95°C.
Low Limit or Circulator: 45, 55, 65, 75, 85, 95°C.
Differentials:
High Limit: 10°F (6°C) nominal.
Low Limit or Circulator:
L6081A,C: 10 to 25°F (6° to 14°C) adjustable.
L4081A,B: 10°F (6°C) nominal or 10° to 25°F (6° to 14°C)
adjustable.
Maximum Pressure Rating:
Well mounted: 200 psi (1380 kPa).
Direct Immersion: 100 psi (690 kPa).
Maximum Ambient Temperature:
At switches: 150°F (66°C).
At sensing element: 265°F (130°C).
Jumper:
The 128975 Push-in Field Addable Jumper (included) can be
inserted in the slot between R-R terminals to simplify
wiring. (Insert with formed legs up in slot labeled jumper.
Be sure to insert fully to positive stop.)
Mounting Dimensions: See Fig. 1 and 2.
Model
Number Insertion Type
a
High Temperature Side Low Temperature Side
Switching
Action on Temperature
Rise to Setpoint Switching
Action on Temperature
Rise to Setpoint
L4081A Well Spst High Limit Breaks Spst Low Limit Breaks
L4081B Spst Circulator Makes
L6081A Spdt Low
Limit/Circulator
Breaks R-B
Makes R-W
L6081C
b