TFHB24F3XYZ1
Specification & Installation Instructions
2
Mounting Instructions
A
E
D
C
B
CAUTION: Risk of malfunction. Remove power prior to separate thermostat cover from its base.
A.
Remove the screw (captive) holding the base and the front cover of the thermostat.
B.
Lift the front cover of the thermostat to separate it from the base.
C.
Pull wire through the base hole.
D.
Secure the base to the wall using wall anchors and screws (supplied). Make the appropriate connections.
E.
Mount the control module on the base and secure using the screw.
Terminal Description
2 Pipe
Analog
On/Off
Floating
Terminals
Fan option
analog
1 spd
2 spd
3 spd
analog
1 spd
2 spd
3 spd
analog
1 spd
2spd
3spd
TB1
1
Common
Common Common Common
2
24 Vac
24 Vac
24 Vac
24 Vac
3
Common Triac
Common Triac
Common Triac
Common Triac
4
Triac output 1 (TO1)
Floating
output 1
-
2 Pipe on/off
2 Pipe floating (close)
5
Triac output 2 (TO2)
-
-
2 Pipe floating (open)
6
Triac output 3 (TO3) Reheat
Local reheat (optional) (on/off or pulse) Local reheat (optional) (on/off or pulse) Local reheat (optional) (on/off or pulse)
7
Common Relay
-
Common Relay
-
Common Relay
-
Common Relay
8
Digital
output
1
(DO1) - -
-
High
- -
-
High
- -
-
High
9
Digital
output
2
(DO2) - -
High
Med
- -
High
Med
- -
High
Med
10
Digital output 3 (DO3) /
Analog Fan Speed (AO4)
Fan analog 1 spd
Low
Low
Fan analog 1 spd
Low
Low
Fan analog 1 spd
Low
Low
11
Occupancy Sensor (DI1)
Occupancy Sensor (optional)
Occupancy Sensor (optional)
Occupancy Sensor (optional)
12
External Humidity Sensor (AI1)
External Humidity Sensor (optional)
External Humidity Sensor (optional)
External Humidity Sensor (optional)
13
External Changeover (AI2)
External Changeover
External Changeover
External Changeover
14
Analog output 1 (AO1)
2 Pipe analog
-
-
15
Analog output 2 (AO2)
-
-
-
16
Analog output 3 (AO3) Reheat
Local reheat analog (optional)
Local reheat analog (optional)
Local reheat analog (optional)
17
A+
Communication
port RS-485
BACnet BACnet BACnet
18
B-
4 Pipe
Cool & Heat Analog
Cool & Heat On/Off
Cool Analog-Heat On/Off or pulse
Cool On/Off - Heat Analog
Terminals
Fan option
analog
1 spd 2 spd 3 spd
analog
1 spd 2 spd 3 spd
analog
1 spd
2 spd 3 spd analog
1 spd 2 spd 3 spd
TB1
1
Common Common
Common
Common
Common
2
24 Vac
24 Vac
24 Vac
24 Vac
24 Vc
3
Common Triac
Common Triac
Common Triac
Common Triac
Common Triac
4
Triac output 1 (TO1) Floating
output 1
-
4 Pipe on/off cool
-
4 Pipe on/off cool
5
Triac output 2 (TO2)
-
4 Pipe (on/off or pulse) heat
4 Pipe (on/off or pulse) heat
-
6
Triac output 3 (TO3) Reheat
Local reheat
(optional)(on/off or pulse)
Local
reheat
(optional)(on/off or pulse)
Local reheat (optional)(on/off or pulse)
Local reheat
(optional)(on/off or pulse)
7
Common Relay
-
Common Relay
-
Common Relay
-
Common Relay
-
Common Relay
8
Digital output 1 (DO1)
-
-
- High
- -
- High
- -
- High
- -
- High
9
Digital output 2 (DO2)
-
-
High Med
- -
High Med
- -
High Med
- -
High Med
10
Digital output 3 (DO3) /
Analog Fan Speed (AO4)
Fan analog 1 spd
Low Low
Fan analog 1 spd
Low Low
Fan analog 1 spd
Low Low
Fan analog 1 spd
Low Low
11
Occupancy Sensor (DI1)
Occupancy Sensor (optional)
Occupancy Sensor (optional)
Occupancy Sensor (optional)
Occupancy Sensor (optional)
12
Ext. Humidity Sensor (AI1)
Ext. Humidity Sensor (optional)
Ext. Humidity Sensor (optional)
Ext. Humidity Sensor (optional)
Ext. Humidity Sensor (optional)
13
External Changeover (AI2)
-
-
-
-
14
Analog output 1 (AO1)
4 Pipe analog cool
-
4 Pipe analog cool
-
15
Analog output 2 (AO2)
4 Pipe analog heat
-
-
4 Pipe analog heat
16
Analog output 3 (AO3) Reheat Local reheat analog (optional)
Local reheat analog (optional)
Local reheat analog (optional)
Local reheat analog (optional)
17
A+
Communication
port RS-485
BACnet BACnet BACnet
BACnet
18
B-
Settings on PC Board
Connecting
strip TB1
Temperature
sensor
TB1
1
2
3
4
5
6
7
8
9
10
11
1
2
13
14
15
16
17
18
Mode selector
JP3
PG
M
R
UN
Dip
switch
ON
1 2 3
Triac output
signal selector
JP1
JP4
Fan output signal
selector
JP2
Digital output
signal selector
Triac Output Signal Selection (JP1)
Mode Selection (JP3)
Jumper (JP1) on top:
All triac output
signal is linked to internal 24Vac.
(Same 24Vac than thermostat)
PGM
RUN
JP3
Jumper (JP3) on RUN:
Thermostat is in
operation mode
.
Thermostat must be set in this mode to operate properly.
If not locked, set point, control mode and speed fan
(Heating & Cooling ON, Cooling only ON or Heating only
ON) may be modified by end user.
Jumper (JP1) on bottom:
All triac output
signal is linked to external 24Vac.
(Different 24Vac than thermostat)
Digital Output Signal Selection (JP2)
24VAC
Jumper (JP2) on left:
All digital output
signal is linked to internal 24Vac.
(Same 24Vac than thermostat)
PGM
RUN
JP3
Jumper (JP3) on PGM:
Thermostat is set in
Programming mode
.
Refer to following section about all settings description
Jumper (JP2) on right:
All digital output
signal is linked to external 24Vac.
(Different 24Vac than thermostat)
Fan Output Signal Selection (JP4)
Bacnet dip switch (DS1) - Optional
AO4
DO3
JP4
Jumper (JP4) on top:
Pin 10 of TB1 is set to be digital output
signal (DO3).
ON
1 2 3
Pull up
120 ohm termination (Last node)
Pull down
AO4
DO3
JP4
Jumper (JP4) on bottom:
Pin 10 of TB1 is set to be analog output
signal (AO4).
24VAC EXT.
EXT.
24VAC
24VAC
