Johnson Controls TEC2664Z-3 BACnet, Руководство по установке

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TEC2664Z-3 BACnet® MS/TP Rooftop Controller for Stand-Alone and Networked Zoning Systems
Installation Instructions 4
Wiring
When an existing rooftop controller is replaced, remove
and label the wires to identify the terminal functions.
When a TEC2664Z-3 Rooftop Controller is replaced,
simply remove the old screw terminal blocks and
reinsert them onto the PCB of the replacement rooftop
controller.
To wire the rooftop 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 1 and Figure 6.
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.
3. Reinsert the screw terminal blocks onto the PCB.
4. Attach 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 rooftop controller cover to the
mounting base (top side first).
6. Use a Phillips-head screwdriver to reinstall the
security screw on the bottom of the rooftop
controller cover.
!
CAUTION: Risk of Electric Shock.
Disconnect 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 TEC2664Z-3 Rooftop Controller.
IMPORTANT: Seal the hole in the wall with
fireproof material to prevent drafts from affecting the
ambient temperature readings.
Table 1: Terminal Identification (See Figure 6.)
Terminal
Number Terminal
Label Function
1 Y2 Cooling Stage II
(Energizes on a Call for
Second-Stage Cooling)
2 Y1 Cooling Stage I
(Energizes on a Call for
First-Stage Cooling)
3 G Fan Output
(Energizes the Fan in
Accordance with the Selected
System Mode)
4 RC 24 VAC from Transformer
5 C 24 VAC (Common) from
Transformer
6 RH 24 VAC for Heating Stages
7 W1 Heating Stage I
(Energizes on a Call for
First-Stage Heating)
8 W2 Heating Stage II
(Energizes on a Call for
Second-Stage Heating)
9 BPD Bypass Damper
(0 to 10 VDC Actuator Output)
10 AU Auxiliary Output
11 SP Static Pressure
12 DI1 Configurable Digital Input 1
13
1 RS Return Air Sensor
14 Scom Sensor Common
15 OS Outside Air Sensor
16 DS Discharge Air Sensor
Blank +, –, REF MS/TP Bus
1. If no sensor is connected to this terminal, then the
rooftop controller uses the onboard temperature sensor
as the return air sensor.