Submittal Sheet

L4079A,B,W PRESSURETROL
®
LIMIT CONTROL
60-2156—03 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 Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, 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
Models: Pressure and Electrical Specifications: See Table 1.
Table 1. Pressure and Electrical Ratings.
a
Ratings apply to each of two separate circuits.
b
One circuit only.
Switching Action:
L4079A—Snap-switch. Breaks two circuits automatically on
pressure rise. Each circuit must be manually reset.
L4079B,W—Snap-switch. Breaks one circuit automatically on
pressure rise. Circuit must be manually reset.
Adjustment means: External adjustment screw. Scale is
calibrated in psi and kPa.
Maximum Ambient Temperature: 150°F (66°C).
Mounting Means:
Pipe fitting—1/4-18 NPT. Connection on diaphragm assembly.
These devices may be either boiler mounted directly to a
boiler fitting, or may be surface mounted, such as on a
wall, by using the knockouts in the case.
Approvals:
Underwriters Laboratories Inc. (UL) Listed: File No. MP466,
Guide No. MBPR.
Canadian Standards Assocuation (CSA): File No. LR95329,
Certificate No. 1720340
Accessories:
50024585-001 Brass Steam Trap.
14026 Steel Steam Trap.
33312B Knurled adjustment knob.
Dimensions: See Fig. 1.
Fig. 1. L4079A,B,W PressureTrol
®
Limit Control
dimensions in inches.
Model Number
Range
Maximum
Diaphragm
Pressure
Ratings in Amperes
120 Vac 240 Vac
psi kPa psi kPa Full Load
Locked
Rotor Full Load
Locked
Rotor
L4079A
a
and
L4079B
b
2 to 15 15 to 100 25 170 9.8 58.8 4.9 29.4
5 to 50 35 to 350 85 590 9.8 58.8 4.9 29.4
10 to 150 70 to 1035 225 1550 9.8 58.8 4.9 29.4
L4079B1066
b
20 to 300 140 to 2070 350 2410 9.8 58.8 4.9 29.4
L4079W1000
b
10 to 150 70 to 1035 225 1550 9.8 58.8 4.9 29.4
3-7/8
1/4
(2-15 PSI ONLY)
KNOCKOUT
FOR 1/2 INCH
CONDUIT (2)
1/4
4-15/16
KNOCKOUT
(2) FOR NO.
10 SCREW
1/4 - 18 NPT
1-
1/16
M22435
2-1/8
1-
13/16
1-
13/16
13/16
13/16
3-1/2
1-1/2
3/16
1-13/16
4-1/2 (COVER)
4-3/8 (CASE)
1-15/16
1-15/16