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TEMPERATURE ACTUATED SWITCHES
CONTROL BULB
AQUASTAT CONTROLLERS
• CONTROL BULB WELLS FOR USE WITH
TEMPERATURE CONTROLLERS
• BUSHING INCLUDED
FOR BULB
DIA. (in.)
DIMENSIONS (in.)
THREAD
SIZE NPT
PART NO.
ABCD
5/16 13.0 11.5 1.2 .4 1/2-14 HL79PZ001
3/8 6.3 5.0 .7 .4 1/2-14 30HH406102
3/8 7.6 5.8 1.4 .4 1/2-14 HL79ZZ002
1/2 8.7 4.2 3.7 .7 1/2-14 HL79MZ001
1/2 8.7 4.2 3.7 .7 3/4-14 HL79MZ005
1/2 5.7 4.2 .7 .7 1/2-14 HL79MZ007
A
B
C
D
P4320
Part No. P672-L4006
• TOTALLY ENCLOSED MICRO
SWITCH SNAP-ACTING SWITCHES
OPERATE ON TEMPERATURE RISE
TO SET POINT.
• VISIBLE CONTROL POINT SCALE
AND EXTERNAL ADJUSTMENT
SCREW PERMIT EASY SETTING.
•HORIZONTAL OR VERTICAL
INSERTION AND DIRECT OR WELL
IMMERSION OF SENSING ELEMENT.
Part No. P672-L6006C
• OPERATE IN RESPONSE TO
TEMPERATURE CHANGES IN
HYDRONIC HEATING SYSTEMS.
• PROVIDES SPDT SWITCHING FOR
THREE-WIRE APPLICATIONS.
• COMBINES CIRCULATOR CONTROL
WITH HIGH AND LOW LIMITS.
•HORIZONTAL OR VERTICAL SURFACE
MOUNTING.
• VISIBLE CONTROL POINT SCALE AND
EXTERNAL ADJUSTMENT SCREW
PERMIT EASY SETTING.
P4321
Part No. P672-L7124U UNIVERSAL OIL ELECTRONIC AQUASTAT CONTROLLER
• PROVIDES ELECTRONIC TEMPERATURE SENSING IN A UL LIMIT-RATED CONTROL WITH A
SINGLE SENSING PROBE.
• CONTROLS CIRCULATOR, OIL BURNER, AND BOILER TEMPERATURE.
• REPLACES THE L8124A, L8124C, L8148A CONTROLLERS.
• THE L7124U HAS A CASE THAT CAN BE CONVERTED FOR EITHER HORIZONTAL OR
VERTICAL MOUNTING.
PART NO.
HONEYWELL
PART NO.
P672-L4006A L4006A1009
P672-L4006B L4006B1007
P672-L6006C L6006C1018
P672-L7124U L7124U1003