PECO T8168B-2 BACnet Proportional Thermostat Installation Guide
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T8168B-2 BACnet® INSTALLATION GUIDE
The PECO BACnet® T8168B-2 thermostat
!
WARNING
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Thank you for choosing a PECO® Performance PRO™ thermostat. The
T8168B-2 thermostat is intended for commercial and residential enviroments. It
supports both programmable and non-programmable operation.
Key features include: Either BACnet® IP or MS/TP Connectivity, auto-
changeover; optional remote sensor; three levels of keypad lockout with optional
PIN access code; a heat/cool Demand Indicator; up to four scheduled events per
day, a 365-day calendar, 20 holidays, holiday override and temporary override.
• READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO
INSTALL, OPERATE OR SERVICE THIS THERMOSTAT.
• Failure to observe safety information and comply with instructions could
result in PERSONAL INJURY, DEATH AND/OR PROPERTY DAMAGE.
• To avoid electrical shock or damage to equipment, disconnect power
before installing or servicing and use only wiring with insulation rated for full
thermostat operating voltage.
Applications
• Use care to avoid electrostatic discharge.
• To avoid potential fire and/or explosion do not use in potentially flammable
or explosive atmospheres.
The PECO® Performance PRO™ T8168 applications include fan coil, PTAC and
conventional system with a single, multi speed or 0-10 VDC Fan.
System Mode Selections: Off-Heat-Cool-Auto
ON-OFF Heat/Cool Outputs: Up to 2 Heat, 2 Cool
Proportional Heat/Cool Outputs: Three Wire Floating or 0-10 VDC Control
Fan Control: Cycling (Auto) or Continuous (On); Up to 3 Speeds or Staged
Permanent Memory: All device settings are stored in permanent memory.
Optional Connections: Remote Sensor, Pipe Sensor, Fault Detection and Setback
• Retain these instructions for future reference.
• This product, when installed, will be part of an engineered system whose
specifications and performance characteristics are not designed or
controlled by PECO® . Review applications and national and local codes to
assure that the installation will be functional and safe.
CAUTION!
TERMINAL BLOCK DESIGNATIONS
• 24 VAC low-voltage thermostat. Do not install on voltages higher than 30 VAC.
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Terminal
\Description
Return To
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• Use copper wire only
• Use care to avoid electrostatic discharge to the thermostat.
24 VAC-1 24 VAC 1 (UNSWITCHED)
24 VAC-2 24 VAC 2
RATINGS
Outputs: Y1, Y2, W1, W2, G, G1
24 VAC (20-30 VAC); 50/60 Hz
10 VA
Outputs: WD, GD, YD
0-10 VDC: Loads must be 1.2K ohms minimum
4-20 mA: Loads must be 600 ohms maximum
This thermostat uses triacs switching for accuracy and quiet operation.
24 VAC-2 24 VAC 2
Note: A load must be
connected to outputs
for testing
Y1
W1
Y2
W2
G
COOL 1
HEAT 1
COOL Open (TWF)
HEAT Open (TWF)
24 VAC 1
24 VAC 1
24 VAC 1
24 VAC 1
24 VAC 1
24 VAC 1
24 VAC 2
24 VAC 2
24 VAC 2
SC
COOL 2 or FAN 3 (MED) COOL Close (TWF)
HEAT 2
HEAT Close (TWF)
FAN 1 (HI)
G1
YD
WD
GD
S1
S2
SC
4A
4B
4C
FAN LO or DAMPER Configurable
0-10VDC COOL (4-20mA)
0-10VDC HEAT (4-20mA)
0-10VDC FAN (4-20mA)
REMOTE SENSOR, FAULT DETECTION
PIPE SENSOR
INSTALLATION INSTRUCTIONS
Select an appropriate thermostat location
Locate the thermostat about four feet (1.2m) above the floor on a wall with good
ventilation, average temperature and good response to temperature changes.
The T8168 may be mounted on a:
• Horizontal or vertical 2” X 4” device box
• Horizontal 4” X 4” device box
• Flat surface
SC
DC/SENSOR COMMON
RS485A (-)
Do not locate the thermostat where it can be affected by:
• Direct sunlight
• Drafts or dead areas behind doors
• Radiating heat or cool from appliances or equipment
• Concealed pipes or chimneys
RS485B (+)
RS485 COMMON
• Outside walls or unheated/uncooled areas
Required components (not included, unless otherwise specified):
• Screws and wall anchors (included)
• WARNING: Disconnect power before beginning installation.
• CAUTION: Use copper wire only
• CAUTION: Do not connect unused wires together
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• Screwdrivers: Phillips (for wallplate); small flathead (for terminal blocks)
• Drill with 3/16” drill bit (or 7/32” for plaster)
• Wire cutter and stripper
TECHNICAL SPECIFICATIONS
Temperature Control Range: 50° to 90° F (10° to 32° C)
Differential: 1° F (0.5°C)
• Level
Input Power: 24 VAC (20-30 VAC) 50/60 Hz (+/- 10%)
Terminal Connections: 14-24 AWG stranded or solid wire
Operating Temperature: 0° to 120°F (-18° to 49°C)
Shipping/Storage Temperature: -20° to 130°F (-29° to 54°C)
Operating Humidity: 5% to 95% RH, non-condensing
Physical Dimensions: 4.3” H x 5.7” W x 1.3”D
Proportional Output Band Width: 2°F (1°C)
Mounting holes
Mounting holes
Wiring passage
Proportional Stroke Time Default: 2 Minutes (Configurable)
© COPYRIGHT 2024 PECO, INC. ALL RIGHTS RESERVED.
P/N 74599 3220-2406 REV 00
1
| General | Details |
|---|---|
| Name | PECO T8168B-2 BACnet Proportional Thermostat Installation Guide |
| Make | PECO |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.42 MB |
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