Checkout - Honeywell AQUASTAT L6188A-C User Manual

Honeywell water heater user manual
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L4188A,B; L4189A,B; L6188A-C; L6189A-C AQUASTAT® CONTROLLERS
To Set Adjustable Differential (if provided)
Use a screwdriver to turn the differential dial until the slot
molded into the case lines up with the desired degrees of
differential.
Fig. 12. Twist the Screwdriver Slightly to turn the
Differential Dial.
To Set Temperature Limit Stop (if provided)
CAUTION
Follow these instructions carefully to avoid
placing the limit stop pointer on the wrong side of
the setting indicator. In a high limit application,
incorrect positioning of the pointer will cause
system operation above the limit stop setting,
potentially resulting in overheating or related
conditions.
• Remove the knob.
• Turn the controller shaft all the way counterclockwise
when setting a high limit. Turn it all the way
clockwise
when setting a low limit.
• Find the metal limit stop on the back of the knob.
• Lift the limit stop slightly with a pencil or screwdriver and
push to move to desired setting.
• Read the setting from the front of the knob.
• Place the knob on the shaft.
• Turn the knob to make sure it: (1) turns through the desired
adjustment range, and (2) stops at the limit setting.
DO NOT FORCE.
• Return knob to desired setting.
Teflon® is a registered trademark for E.I. Du Pont De Nemours and Company.
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
® U.S. Registered Trademark
© 2007 Honeywell International Inc.
68-0061—1
J.I. Rev. 10-07
CONTROLLER
DIFFERENTIAL
ADJUSTMENT
DIAL
SETTING
INDICATOR
M25425
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
AJUST LIMIT STOP
REPLACE KNOB ON SHAFT
SHAFT
FOR LOW LIMIT STOP:
TURN SHAFT
FULL COUNTERCLOCKWISE
(SHOWN) BEFORE
REPLACING KNOB.
FOR HIGH LIMIT STOP:
TURN SHAFT
FULL CLOCKWISE
BEFORE REPLACING
KNOB.
Fig. 13. Adjust the Limit Stop with a Screwdriver and
check Orientation when Replacing Knob on Shaft.

CHECKOUT

Turn the system on and observe it through several cycles to
make sure the controller operates as desired.
LIFT AND PUSH
TO CHANGE LIMIT
SETTING
LIMIT STOP
POINTER
KNOB
SETTING INDICATOR:
LIMIT STOP MUST
BE ON RIGHT SIDE OF
SETTING INDICATOR FOR
HIGH LIMIT; ON LEFT
SIDE FOR LOW LIMIT
KNOB
M25426

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