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11
12
13
14
15
16
SW3
SW1
Config. 39:
4-Pipe,
1/2/3 Speeds fan ,
Heat valve PID,
Cool valve PID
Fan high
Fan medium
(or Economizer )
Fan low
Heat element
(2
nd
stage heat)
Cool valve PID
Heat valve PID
8
7
6
5
4
3
2
1
6
5
4
3
2
1
JP3
JP2
3
Jumpers
JP2, JP3
for analog
outputs
1
3
1
- 36 -
Wiring and DIP switch/jumper configurations – FC systems – 4-pipe
Outputs
See drawing on page 21 for DIP switch and jumper locations.
PID valves: 0-10 Vdc, 0.5 mA Not isolated
Control – Fan on/off, Heat elements, Cool/Heat valves, Economizer: 24 Vac, 0.5A max
(1)
SW3.1, SW3.2 – Fan speeds:
1 speed (Low):
SW3.1 = ON, SW3.2 = OFF
2 speeds(Low and High):
SW3.1 = OFF, SW3.2 = ON
3 speeds(Low, Medium, and High):
SW3.1 = OFF, SW3.2 = OFF
(2)
SW3.4 – 2
nd
heating stage:
ON = Enable, OFF = Disable
(3)
SW3.5 – Chilled beam option:
ON = Enable chilled beam (fan will not run with cooling)
(5)
SW1.6 – Terminal 12 operation:
ON = Economizer
OFF = Fan Medium (3 speeds) / Terminal not in use (1/2 speeds)
Important: Economizer will not work in 3 fan speeds configuration.
(1)
(5)
(2)
(3)
Summary of Contents for ComfortVu TB-24
Page 7: ...TB 24 HM Dimensions 7 ...