Carrier ComfortVu TB-24-HM - Page 28

Config. 10:
HC22
1 Speed fan,
Humidifier,
Reheat for
Dehumidification
11
12
13
14
15
16
Heat element 2
(2
nd
stage heat)
Fan (1 speed)
Compressor 2
Compressor 1
Humidifier
Config. 11:
HP31
1 Speed fan,
Humidifier,
Reheat for
Dehumidification
Fan (1 speed)
Compressor
Heat pump
87654321
654321
SW3
SW1
87654321
Heat element 2
(3
rd
stage heat)
Heat element 1
(2
nd
stage heat)
Humidifier
654321
Config. 12:
HC11
2/3 Speeds fan,
Humidifier,
Reheat for
Dehumidification
Compressor
87654321
Humidifier
654321
Fan medium
(or Economizer )
Fan high
Fan low
Heat element 1
(1
st
stage heat)
Heat element
87654321
654321
Config. 13:
HP21
2/3 Speeds fan,
Reheat for
Dehumidification
Compressor
Heat pump
87654321
654321
Fan medium
(or Economizer )
Fan high
Fan low
Heat element
(2
nd
stage heat)
JP3 JP2
3
Jumpers
JP2, JP3
for analog
outputs
1
3 1
JP3 JP2
3 1 3 1
JP3 JP2
3 1 3 1
JP3 JP2
3 1 3 1
- 28 -
Wiring and DIP switch/jumper configurations – AC systems
w/wo Humidifier for humidification, with Reheat for dehumidification
Outputs
Humidifier: 0-10 Vdc, 0.5 mA Not isolated
Control – Fan on/off, Heat elements, Heat pump, Compressors, Economizer: 24 Vac, 0.5A max
See drawing on page 21 for DIP switch and jumper locations.
(3) (3) (3) (3)
(2) (2)
(2)
(2)
(2)
(2)
(1)
SW3.1, SW3.2 – Fan speeds: 2 speeds (Low and High): SW3.1 = OFF, SW3.2 = ON
3 speeds (Low, Med., and High): SW3.1 = OFF, SW3.2 = OFF
(2)
SW3.4 – HP (Heat pump): ON = Heat pump active in cool, OFF = Heat pump active in heat
HC (not heat pump): ON = Electrical heater, OFF = Oil/Gas heater (no fan)
(3)
SW3.5 – Compressor delay: ON = Disable, OFF = Enable
(5)
SW1.6 – Terminal 12 operation: ON = Economizer
OFF = Fan Medium (3 speeds) / Terminal not in use (2 speeds)
Important: Economizer will not work in 3 fan speeds configuration.
(5) (5)