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Honeywell CT3300 Installation And Programming Instructions page 8

Weekday/weekend (5-day/2-day) programmable heat and/or cool low voltage (20 to 30 vac) thermostat and mounting plate
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Step 6. Mount Thermostat
Fig. 11.
Step 7. Install the batteries
Fig. 13.
REMOVING
BATTERY
DOOR
M1719C
Fig. 14.
69-1634—1
Fig. 12.
M20130
IMPORTANT:
a. Make sure that the System switch is set in the Off position.
b. Using a coin, open the battery door as shown in Fig. 13.
c.
d. Replace the battery door.
e. Remove the clear plastic label from the digital display.
When the batteries are installed correctly, the digital display flashes all
entries once, then begins to flash a default time and the current
temperature (Fig. 14). The flashing continues until you begin to program
the thermostat. You are now ready to program the thermostat. See
Programming section.
e. Align the tabs at the top of the thermostat with the
tabs at the top of the mounting plate (Fig. 11).
f.
Press the lower edge of the case to latch the
bottom of the thermostat (Fig. 12)
M20131
Batteries must be installed for programming and operation of
the thermostat and heating/cooling system. Honeywell
recommends using Energizer® batteries.
Install the batteries. Make sure that the positive and negative termi-
nals are oriented correctly as marked inside the battery case.
Check your progress
8

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