Bryant T2-PAC - Manual (Page 12)

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Fig. 4 -- Attach Thermostat to Backplate
11. Close thermostat assembly making sure pins on back of circuit board align
with sockets in connector.
12. Turn ON power to unit.
When power is applied, all display icons are lit for 2 seconds to test the display.
Following this, the equipment type for which the thermostat is configured is displayed
for an additional 2 seconds. It will be one of HP, H2, AC, A2, H or C (see explanation
under Step 3, Option 01 below). A HP thermostat configured to operate an AC (see
Option 1 below) will display AC. An AC thermostat cannot display HP.
NOTE: If a common wire has not been connected, two AA batteries must be used
to power the thermostat.
Step 3 — Set Thermostat Configuration
Configuration options enable the installer to configure the thermostat for a particular
installation. Most are not presented to the homeowner and therefore must be properly set
by the installer. (Only those marked with an asterisk * below are available to the
homeowner.) Following is a list of the options available, an explanation of their function,