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Honeywell L4188A Manual page 5

Aquastat controllers
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MOUNTING
BEHIND PANEL-CONTROLLER
WITH KNOB
NOTE: The panel can be up to 5164 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.
Fig. 5.
3. Remove
the two
screws
that
hold
the setting
indicator
in place and remove the settino indicator.
See
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
in-
dicator
in front
of, the panel
using
the two
screws
removed
earlier. See Fig. 5.
8. Replace
knob on shaft.
7. MODELS
WITH
TEMPERATURE
LIMIT
STOP
ONLY: Adjust to desired setting, as described
under "To
Set Temperature
Limit Stop," page 8.
FIG. 5-THE
MOUNTING
SCREWS HOLD THE SETTING INDICATOR
AND CONTROLLER
IN PLACE.
MOUNTING
BEHIND PANEL-CONTROLLER
WITH
SCREWDRIVER
SLOT
.
I.
MarK
template
ir
2. MANUAL
RESET MODELS
ONLY: Drill a fourth
hole to make the manual reset button accessible.
'*--'-
and drill three holes in the panel, using the
1
Fig. 6 as a guide.
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
ter-
minals pointed
down and fasten with two No. 8 sheet-
metal screws (not supplied).
See Fig. 6.
5
68-0061

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