ComfortVu™ BACnet Thermostat Model Standard TB-24-HM (24 Vac)Carrier Proprietary and Confidential
CARRIER CORPORATION ©2020
Installation and Operation Guide
All rights reserved
35
Wiring and DIP switch/jumper configurations 31 to 34 – FC systems - 4-
pipe
Outputs
Config. 31:
4-Pipe, 1/2/3 Speeds
fan(1)
Config. 32:
4-Pipe, 1/2/3 Speeds
fan(1), Floor heating
Config. 33:
4-Pipe, 1/2/3 Speeds
fan(1), Cool valve PID
Config. 34:
4-Pipe, 1/2/3 Speeds
fan(1), Cool valve PID,
Floor heating
11
Fan high
Fan high
Fan high
Fan high
12
Fan medium
(or Economizer
(5)
)
Fan medium
(or Economizer
(5)
)
Fan medium
(or Economizer
(5)
)
Fan medium
(or Economizer
(5)
)
13
Fan low
Fan low
Fan low
Fan low
14
Heat element
(2)
(2nd stage heat)
Floor heating
(1st stage heat-no fan)
Heat element
(2)
(2nd stage heat)
Floor heating
(1st stage heat–no
fan)
15
Cool valve
(3)
Cool valve
(3)
Cool valve PID
(3)
Cool valve PID
(3)
16
Heat valve
(1st stage heat)
Heat valve
(2nd stage heat)
Heat valve
(1st stage heat)
Heat valve
(2nd stage heat)
SW3
SW1
Jumpers
JP2, JP3
analog
outputs
(1)
SW3.1, SW3.2 = Fan speeds:
1 Speed (Low):
2 Speeds (Low and High):
3 Speeds (Low, Medium and High):
SW3.1 ON, SW3.2 OFF
SW3.1 OFF, SW3.2 ON
SW3.1 OFF, SW3.2 OFF
2)
SW3.4 = 2nd heating stage:
ON – Enable
OFF – Disable
(3)
SW3.5 = Chilled beam option:
ON – Enable chilled beam (fan will not run with cooling)
(4)
SW1.3 = Dehumidification:
ON – Use dehumidifier
OFF – Use reheat for dehumidification
(5)
SW1.6 = Terminal 12 operation:
ON – Economizer
OFF – Fan Med. (3 Speeds) / Terminal not in use (1/2 Speeds/VFS)
Important: Economizer will not work in 3 fan speeds configuration
See drawing for
DIP switch and jumper locations
(page 23).
Fan VFS, PID valves: 0-10VDC, 0.5mA Not isolated
Control - Fan on/of, Heat elements, Cool/Heat valves, Economizer: 24VAC, 0.5A max.
Summary of Contents for ComfortVu TB-24-HM
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