TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions
16
Configuring the TEC26x7-2 Series Thermostat
The TEC26x7-2 Series Thermostat comes from the
factory with default settings for all configurable
parameters. The default settings are shown in Table 5.
To reconfigure the parameters via the thermostat,
follow the steps in this section.
To access the Installer Configuration Menu, press and
hold the
OVERRIDE
key for approximately 8 seconds.
Once the Installer Configuration Menu begins, release
and press the
OVERRIDE
key to scroll through the
parameters listed in Table 5. When the desired
parameter is displayed, use the
UP/DOWN
arrow keys
to choose the desired selection option. Then press and
release the
OVERRIDE
key to continue scrolling
through the parameters.
When the thermostat is in the Installer Configuration
Menu and left unattended for approximately 8 seconds,
the thermostat reverts to the Status Display Menu.
Configuring Inputs BI1, BI2, and UI3
When BI1 and BI2 are configured for an alarm
condition, an alarm condition is displayed locally when
the input is closed. An alarm message is included on
the scrolling Status Display Menu and when the
message is displayed, the backlight momentarily
lights up.
The UI3 input provides changeover of hot/cold water
switching or supply air temperature monitoring at the
thermostat.
Each input can be configured to the Selection Options
included in Table 5.
Configuring the Output Options (Out1Conf)
For applications that enable heating/cooling operation
from the same output, choose the selection option
(2.0)
in the
Out1Conf
parameter. For applications that
enable heating/cooling operation from different outputs,
choose the selection option
(4.0)
.
Configuring the Sequence of Operation
(SeqOpera)
Choose the appropriate sequence of operation. The
modes presented are user-dependent on the sequence
of operation selected. For two-pipe applications using a
changeover sensor, choose the selection option
(0): Cooling Only
. Changeover occurs between
Cooling Only
and
Heating Only
. See Figure 20
through Figure 25 for sequence of operation examples.
Table 3: Selection Options for Sequence of Operation in Two-Pipe Applications
Selection
Option
Control
Curve
Terminal Numbers Used (See Table 1 and Figure 5.)
On/Off Control
Floating Control
Proportional
0 to 10 VDC Control
(0): Cooling Only
See Figure 20.
10:
N.O. Cooling
11:
N.C. Cooling
10:
Open Cooling
11:
Closed Cooling
10:
Proportional Cooling
(1): Heating Only
See Figure 21.
10:
N.O. Heating
11:
N.C. Heating
10:
Open Heating
11:
Closed Heating
10:
Proportional Heating
(2): Cooling and Reheat
See Figure 22.
6 and 7:
Reheat
10:
N.O. Cooling
11:
N.C. Cooling
6 and 7:
Reheat
10:
Open Cooling
11:
Closed Cooling
6 and 7:
Reheat
10:
Proportional Cooling
(3): Heating and Reheat
See Figure 23.
6 and 7:
Reheat
10:
N.O. Heating
11:
N.C. Heating
6 and 7:
Reheat
10:
Open Heating
11:
Closed Heating
6 and 7:
Reheat
10:
Proportional Heating
