Johnson Controls TEC2627-2, Installation Instructions And Operators Manual

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TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions 3
Wiring
When an existing thermostat is replaced, remove and
label the wires to identify the terminal functions. When
a TEC26x7-2 Series Thermostat is replaced, simply
remove the old screw terminal blocks and reinsert them
onto the PCB of the replacement thermostat.
To wire the thermostat:
1. Strip the ends of each wire 1/4 in. (6 mm) and
connect them to the appropriate screw terminals as
indicated in Table 1 and Figure 5 through
Figure 18.
Note: For more details on wiring the MS/TP
Communications Bus, refer to the MS/TP
Communications Bus Technical Bulletin
(LIT-12011034).
2. Carefully push any excess wire back into the wall.
Note: Seal the hole in the wall with fireproof material
to prevent drafts from affecting the ambient
temperature readings.
3. Reinsert the screw terminal blocks onto the PCB.
4. Reattach the MS/TP communication wires to the
terminal block.
Note: If multiple wires are inserted into the terminals,
be sure to properly twist the wires together prior to
inserting them into the terminal connectors.
5. Reattach the thermostat cover to the mounting
base (top side first).
6. Use a Phillips-head screwdriver to reinstall the
security screw on the bottom of the thermostat
cover.
!
CAUTION: Risk of Electric Shock.
Disconnect the power supply before
making electrical connections to avoid
electric shock.
!
CAUTION: Risk of Property Damage.
Do not apply power to the system before
checking all wiring connections. Short
circuited or improperly connected wires
may result in permanent damage to the
equipment.
IMPORTANT: Make all wiring connections in
accordance with local, national, and regional
regulations. Do not exceed the electrical ratings of
the TEC26x7-2 Series Thermostat.
Table 1: Terminal Identification (See Figure 5.)
Terminal
Number Terminal Label Function
TEC2627-2
(On/Off or
Floating Control) TEC2647-2
(Proportional
0 to 10 VDC Control)
4 24 V~ Hot 24 V~ Hot 24 VAC from Transformer
5 24 V~ Com 24 V~ Com 24 VAC (Common) from Transformer
6 BO5 Aux BO5 Aux Aux BO (Auxiliary Output)
7 BO5 Aux BO5 Aux Aux BO (Auxiliary Output)
8 BO3 Blank Open Heat
9 BO4 AO2 Close Heat
10 BO1 AO1 Open Cool
11 BO2 Blank Close Cool
12 BI1 BI1 Configurable Binary Input 1
13 RS RS Remote Sensor
14 Scom Scom Sensor Common
15 BI2 BI2 Configurable Binary Input 2
16 UI3 UI3 Configurable Universal Input 3
Blank +, –, REF +, –, REF MS/TP Bus