Table of Contents
Advertisement
Wiring and DIP switch/jumper configuration 22 – FC systems - 4-pipe
Config: 22
4-Pipe, 1/2/3 Speeds
Outputs
(1)
fan
, Heat valve PID,
Cool valve PID
11
Fan medium
12
(or Economizer
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: 0-10 Vdc, 0.5 mA Not isolated
Control – Fan on/off, Heat elements, Cool/Heat valves: 24 Vac, 0.5A max
ComfortVu™ BACnet Thermostat Model Standard TB-24 (24 Vac)Carrier Proprietary and Confidential
Installation and Operation Guide
Fan high
)
(5)
Fan low
(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 Medium (3 speeds) / Terminal not in use (1/2 speeds/VFS)
Important: Economizer will not work in 3 fan speeds configuration.
32
SW3.1 = ON, SW3.2 = OFF
SW3.1 = OFF, SW3.2 = ON
SW3.1 = OFF, SW3.2 = OFF
CARRIER CORPORATION ©2024
All rights reserved
Advertisement
Table of Contents
