Honeywell Q682B Installation Instructions Manual page 5

Insert Clock Batteries
Power is supplied to the clock by the 24 Vac transformer
or two A A A alkaline batteries (included), or by the heating
or cooling control circuit. Backup batteries may be in­
stalled to supply power to the clock if power is interrupted
when using 24-Vac powering method.
Install the batteries in the thermostat (Fig. 7).
Once a year or when batteries are dead, replace with two
new AAA alkaline batteries. We recommend Energizer®
batteries.
Fig. 7— Insert clock batteries.
Set Clock
Adjust the clock by moving the minute hand clockwise.
Do NOT reverse the minute hand.
When time is correctly set, the time indicator arrow
(Fig. 8) points to the correct time and the corresponding
daytime (light) or nighttime (dark) portion of the program
dial.
Set Heat Anticipator
Adjust the heat anticipator lever to match the current
rating of the primary control for the proper cycle rate
(Fig. 9). Adjustable anticipation must be set for total cur­
rent of heat and fan control.
The current rating is usually stamped on the control or
valve (Fig. 10), or a setting may be given in the device
instructions.
Fig. 10— Current rating of primary control.
ZONE VALVE
If no current rating or heat anticipator setting is given,
measure the current with an ammeter. Proceed with the
following steps.
Remove thermostat from wallplate or subbase. Connect
an ac ammeter of appropriate range (about 0A to 2A)
between the R and W terminals on the wallplate or subbase,
except in electric heat and heat pump systems.
Let the system operate for one minute.
Adjust the heat anticipator lever to match the number
that reads on the ammeter.
Fig. 8— Set clock.
Fig. 9—Adjust heat anticipator.
ANTICIPATOR
SCALEPLATE
ANTICIPATOR
SETTING LEVER
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