Honeywell L4189A - Manual (Page 5)

L4188A,B; L4189A,B; L6188A-C; L6189A-C AQUASTAT® CONTROLLERS
5 68-0061—1
Mounting Behind Panel-Controller with Knob
NOTE: The panel can be up to 5/64 in. thick.
1. Uncoil capillary, starting at bulb. Avoid sharp bends or
kinks in the capillary. Leave excess capillary loosely
coiled below controller case.
2. Remove the setting knob by pulling straight off.
3. Remove the two screws that hold the setting indicator in
place and remove the setting indicator (See Fig. 5).
4. ADJUSTABLE DIFFERENTIAL MODELS ONLY: Set
differential. See Adjustment and Checkout section.
5. Using setting indicator as a template, mark and drill
holes in the panel for the mounting screws and for the
knob shaft.
6. Mount the controller behind, and the setting indicator in
front of, the panel using the two screws removed earlier
(See Fig. 5).
7. MODELS WITH TEMPERATURE LIMIT STOP ONLY:
Adjust to desired setting, as described under “To Set
Temperature Limit Stop,” page 8.
8. Replace knob on shaft.
Fig. 5. The Mounting Screws hold the Setting Indicator and Controller in place.
Mounting Behind Panel-Controller with Screwdriver Slot
1. Mark and drill three holes in the panel, using the tem-
plate in Fig. 6 as a guide.
2. MANUAL RESET MODELS ONLY: Drill a fourth hole to
make the manual reset button accessible.
3. ADJUSTABLE DIFFERENTIAL MODELS ONLY: Drill a
hole for the differential dial, if desired, Set the differential.
See Adjustment and Checkout section.
4. Hold controller against back of panel with terminals
pointed down and fasten with two No. 8 sheetmetal
screws (not supplied) (Refer to Fig. 6).
CONTROLLER
PANEL
(MAX. 5/64 IN. THICK)
NO. 8
MOUNTING
SCREWS (2)
KNOB
SETTING
INDICATOR
M25418