PECO T8168B-2 BACnet Proportional Thermostat Installation Guide
112
113
System Fan Type
0 = On/Off Fan (Default)
0: Uses available fan speeds per Service Menu 110
1: Uses GD output for 0-10 VDC fan*. User selection of speed.
HI Speed is set at SM 125-126,LO speed is set at SM 127, MED is set between HI-LO.
2: Uses GD output for 0-10 VDC fan*.
Modulates between Min and Max selections in SM 125-127*.
*Damper Output is Available at (G1) and runs per SM 111
1 = 0–10VDC FAN Hi-MED-LO Fan
2 = Proportional 0-10VDC Fan
0-10 VDC Fan Ramping
0 to 3 Minutes, 30 sec Increments
(Default 1:00)
Sets how long it takes for the fan to transition between 0 VDC and 10 VDC when
SM112=1 or 2. The duration will be shorter if SM125 or SM126 are less than 10 VDC.
114
120
Valve Stoke Time
30 Sec To 5 Min (Default 120)
0 – OFF for Heating (Gas/Oil Heat)
1= Electric Furnace (DEFAULT)
0 = 4 – 20mA
Set the amount of time for a TWF valve to go from fully closed to fully Open.
Fan Control (Heating)
0: The thermostat will not activate the fan with a heating demand.
1: The thermostat will activate the fan with heat demand.
122
YD Output Configuration
WD Output Configuration
Configures digital cooling output for 0-10VDC or 4-20mA DC
Configures digital heating output for 0-10VDC or 4-20mA DC
1 = 0 – 10 Volts (DEFAULT)
0 = 4 – 20mA
1 = 0 – 10 Volts (DEFAULT)
123
124
GD Output Configuration
0 = 4 – 20ma
Configures digital fan output for 0-10VDC or 4-20mA DC
1 = 0 – 10 Volts (DEFAULT)
125
126
127
135
GD Max Voltage, Heating
Demand
6 – 10 VDC (Default: 8)
12 – 20 mA (Default: 20)
Depending on SM 124 setting, sets Fan HI speed voltage or current (mA) at terminal GD
with demand for Heat.
GD Max Voltage, Cooling
Demand
6 – 10 VDC (Default: 10)
12 – 20 mA (Default: 20)
Depending on SM 124 setting, sets Fan HI speed voltage or current (mA) at terminal GD
with demand for Cool.
GD Min Voltage
0 – 6 VDC (Default: 2)
4 – 12 mA (Default: 4)
Depending on SM 124 setting, sets Fan LO speed voltage or current (mA) at terminal GD
with no demand.
W1 Output Configuration
0 - NC: Normally Closed Operation (Default)
1 - NO: Normally Open Operation
Reverses the ON/OFF operation for W1. NC operation powers on with a demand. NO
opreation powers off with a demand and will be on with no demand unless main power is
removed from the thermostat.
170
171
S1 Remote Sensor Input
S2 Pipe Sensor
0
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0: Remote temperature sensing is disabled.
1: The T8168 uses the remote sensor only for temperature sensing.
2: The T8168 averages the local and remote sensor for temperature sensing.
When using a remote sensor an open or short will turn off outputs and display either
2Ero(open) or 2Erc (closed). Fault detection settings are not used.
1= Remote Indoor Sensor Connected
2 = Remote Sensor Connected And Sensor
Averaging
0 – Disabled (Default)
1 – Two Pipe Operation
Enables fan coil pipe sensor operation. Connect a PECO pipe sensor or dry switch closure
for change over from Summer (cold water) to Winter (hot water). 2-pipe operation uses the
Cool 1 output for heating and cooling. Heat 1 is disabled. 4-pipe operation allows heat 1 in
summer mode of operation.
2 – Four Pipe Operation (use for 2-pipe with
electric heat relay)
Available when SM 110 = 1 through 5 or 14 through 16
172
173
174
Pipe Sensor Threshold for 50F to 72F (Default 60F)
Cooling
Changes to Cool when pipe temp is below threshold. Available when SM 171 = 1 or 2
Pipe Sensor Threshold for 75F to 90F (Default 80F)
Heating
Changes to Heat when pipe temp is above threshold. Available when SM 171 = 1 or 2
Pipe Sensor Purge
0 = Time
TEMP: Purge continues until a non-ambiguous condition is sensed.
TIME: A 3-minute purge is started. Once complete and still ambiguous mode all thermostat
outputs are disabled for 1 hour.
1 = Temp (Default)
Available when SM 171 = 1 or 2
175
240
Fault Detection/ Setback
0 = Disabled (Default)
1 = Active On Open
2 = Active On Open
3 = Active On Close
4 = Occupancy Sensor
When enabled connect dry switch between S1 and SC.
Displays “Door” in clock location, turn outputs OFF, blink red LED
Displays “Fdd” in clock location, outputs function normally
Displays “Err” on clock location, turn outputs OFF blink red LED
Sets thermostat to setback with a closure at SC and S1 .
(requires SM170=0)
No remote probe
Number of Program Events 2 or 4 Events (DEFAULT = 2)
When the T8168 is set up as programmable this sets the number of events per day.
Events are OCC1, UNOCC1, OCC2, UNOCC2
250
260
Clock Format
F or C
12 or 24 Hrs (Default = 12)
0- Celsius
This service menu sets the clock format.
Determines temperature displays in Fahrenheit or Celsius
1- Fahrenheit (Default)
0-99 Seconds (0-Default)
270
Fan Off Delay Heat
The amount of time (in seconds) the lowest available fan speed will run after the
thermostat heating outputs are disabled
280
290
Fan Off Delay Cool
Range Low
0-99 Seconds (0-Default)
50-90 F (50F- Default)
The amount of time (in seconds) the lowest available fan speed will run after the
thermostat cooling outputs are disabled
The lowest selectable temperature setpoint value
© COPYRIGHT 2024 PECO, INC. ALL RIGHTS RESERVED.
P/N 74599 3220-2406 REV 00
5
| 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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