Terminal Identification - Johnson Controls TEC3000 Series Quick Start Manual

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.
ATTENTION
Risque de dégâts matériels
Ne pas mettre le système sous tension avant
d'avoir vérifié tous les raccords de câblage. Des
fils formant un court-circuit ou connectés de façon
incorrecte risquent d'endommager irrémédiablement
l'équipement.
Important: Make all wiring connections in
accordance with local, national, and regional
regulations. Do not exceed the electrical ratings of
the TEC3000 Series Thermostat Controller.
Important: Use correct ESD precautions during
installation and servicing to avoid damage to the
electronic circuits of the thermostat controller.
To wire the thermostat controller:
1. Strip the ends of each wire 1/4 in. (6 mm) and
connect them to the appropriate screw terminals as
indicated in Table 3.
Note: For more details on wiring the MS/
TP Communications Bus, refer to the MS/
TP Communications Bus Technical Bulletin
(LIT-12011034).
2. Attach the communication wires to the terminal
block.
Note: If multiple wires are inserted into the
terminals, make sure to correctly twist the
wires together before inserting them into the
terminal connectors.
3. 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.
4. For networked models, set the bus end-of-line (EOL)
termination switch to the desired location.
You can designate the thermostat controller as
the end of the Field Controller (FC) Bus and N2
Bus through the bus EOL termination switch.
The default position is OFF. If the thermostat
controller is at the end of a daisy chain of
devices on the FC Bus and N2 Bus, set the EOL
switch to the ON position. See Figure 3.
4 TEC3000 Series Networked and Wireless Single- or Two-stage Economizer Thermostat Controllers Quick Start Guide
CAUTION
5. Reattach the thermostat controller cover to the
mounting base, bottom side first.
Important: Make sure you reattach the cover
that corresponds to its correct base. The CPU
board number needs to match the base board
number. Otherwise, an operation error occurs
after you reattach a cover and base that do not
belong together.
6. Use a 1/16 in. (1.5 mm) Allen wrench or Johnson
Controls T-4000-119 Allen-Head Adjustment Tool
(order separately) to reinstall the security screw
on the top of the thermostat controller cover. See
Figure 2 for security screw placement.
7. Remove the protective plastic cover sheet from the
display.
Important: If the display is dirty, gently wipe
it clean with isopropyl alcohol or ethyl alcohol.
Do not scrub hard as to avoid damaging the
surface. Do not use other cleaners such as
water, ketones, and aromatic solvents, since
they may damage the polarizer.
Note:
- For VAV and two-pipe systems, connect
the valve to the heating output.
- Only one transformer is required for each
TEC.
- Power to the AUX contact comes from
the reheat coil.

Terminal identification

Table 3: Terminal identification (See
for details)
Terminal Function
label
TEC3030,
TEC3031,
TEC313x
24 V 24 VAC hot from the sensor
Y1 Cooling stage 1
Y2 Cooling stage 2
AUX Auxiliary binary output
AUX Auxiliary power input
W1 OB Heating 1 (RTU mode)/Reversing valve (O/B) (Heat
Pump mode)
Power for W1 and W2
1
RH
W2 SUP Heating 2 (RTU mode)/Supplemental heat (Heat
Pump mode)
OAD Outdoor air damper, 0 VDC - 10 VDC
Common
COM 2
Common
COM 2
G Fan
BI-2 Configurable binary input 2
BI-1 Configurable binary input 1
RSEN Configurable analog input 1
OAT Configurable analog input 3
SAT Configurable analog input 2
Wiring diagrams
TEC3330, TEC3630,
TEC3331 TEC3631