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L4188A,B; L4189A,B; L6188A-C; L6189A-C AQUASTAT® CONTROLLERS
3 68-0061—1
Ambient Temperature Range: 32° to 158° F (0° to 70° C).
Mounting: Must be mounted in an enclosure that meets local
electrical codes.
Direct: Unit mounts on immersion well at desired sensing
location.
Remote bulb: Sensing bulb is inserted into immersion well
at desired sensing location. Controller case mounts
behind remote panel with two self-tapping M4 or No. 8
sheetmetal screws (supplied). Optional mounting bracket
allows mounting on front of panel. Specify bracket when
ordering.
Dimensions: See Fig. 1.
Sensing Bulb: Liquid-filled copper (See Fig. 1).
Underwriters Laboratories Inc. Component Recognized:
File No. MP466, Guide No. MBPR.
Canadian Standards Association Listed:
File No. LR62051-1.
Fig. 1. Dimensions in in. [mm in brackets] of Aquastat Controller and Immersion Well.
7/16
(11)
19/32
(15)
1-7/8
(48)
3/8
(9)
2-11/16
(68)
1-1/4
(32)
1-7/8
(48)
5/8
(16)
1
1
HOLE FOR
UP TO NO. 10
SCREW
19/32
(15)
1/2
(13)
11/16
(17)
1-7/8
(48)
4 (101)
SEE
TABLE
3/16
(5)
KNOB MODEL
SCREWDRIVER SLOT MODEL
1-1/4
(32)
1-7/8
(48)
1-7/8
(48)
5/8
(16)
1-7/8
(48)
3/8
(9)
1-7/8
(48)
1/2
(13)
4 (101)
SEE
TABLE
3/16
(5)
IMMERSION WELLS
INSERTION
INSULATION
OPTIONAL MOUNTING BRACKET
MODEL CAPILLARY LENGTH MOUNTING
DIRECT MOUNT
L4188, L5188
30 MM USE IMMERSION WELLS SHOWN AT RIGHT1-3/16 IN.
REMOTE MOUNT
L4189, L5189
USE IMMERSION WELLS SHOWN AT RIGHT
OR CAPILLARY COMPRESSION FITTINGS
50 MM2-5/16 IN.
1000 MM39-3/8 IN.
1500 MM50 IN.
2000 MM78-11/16 IN.
PART NO. SPUD INSULATION INSERTION
45900409-003B 1/2 in. BSPT 1 in. 3-1/2 in.
45900409-009B 1/2 in. NPT 1-1/2 in. 3 in.
45900409-010B 3/4 in. NPT 1-1/2 in. 3 in.
M25414