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Wiring and DIP switch/jumper configuration 39 – FC systems - 4-pipe
Config. 39:
4-Pipe,
Outputs
1/2/3 Speeds fan(1),
Heat valve PID, Cool
valve PID
Fan high
11
Fan medium
12
(or Economizer
Fan low
13
Heat element
14
(2nd stage heat)
Cool valve PID
15
Heat valve PID
16
(1st stage heat)
SW3
SW1
Jumpers
JP2, JP3
analog
outputs
(1)
SW3.1, SW3.2 = Fan speeds:
2)
SW3.4 = 2nd heating stage:
(3)
SW3.5 = Chilled beam option:
(4)
SW1.3 = Dehumidification:
(5)
SW1.6 = Terminal 12 operation:
See drawing for DIP switch and jumper locations (page 23).
PID valves: 0-10VDC, 0.5mA Not isolated
Control - Fan on/of, Heat elements, Cool/Heat valves, Economizer: 24VAC, 0.5A max.
ComfortVu™ BACnet Thermostat Model Standard TB-24-HM (24 Vac)Carrier Proprietary and Confidential
Installation and Operation Guide
)
(5)
(2)
(3)
1 Speed (Low):
2 Speeds (Low and High):
3 Speeds (Low, Medium and High):
ON – Enable
OFF – Disable
ON – Enable chilled beam (fan will not run with cooling)
ON – Use dehumidifier
OFF – Use reheat for dehumidification
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
37
SW3.1 ON, SW3.2 OFF
SW3.1 OFF, SW3.2 ON
SW3.1 OFF, SW3.2 OFF
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