Table of Contents
Advertisement
Wiring and DIP switch/jumper configurations 1 to 4 – AC systems
Config. 1:
Outputs
1 Speed fan
Heat element 3
11
(3rd stage heat)
Heat element 2
12
(2nd stage heat)
Fan (1 speed)
13
Compressor 2
14
Compressor 1
15
Heat element 1
16
(1st stage heat)
SW3
SW1
Jumpers
JP2, JP3
analog
outputs
(1)
SW3.1, SW3.2 – Fan speeds:
(2)
SW3.4 – HP (Heat pump):
HC (not heat pump):
(3)
SW3.5 – Compressor delay:
(4)
SW1.3 – Dehumidification:
(5)
SW1.6 – Terminal 12 operation:
See drawing for DIP switch and jumper locations (page 23).
Control – Fan on/off, Heat elements, Heat pump, Compressors, Economizer: 24 Vac, 0.5A max
ComfortVu™ BACnet Thermostat Model Standard TB-24 (24 Vac)Carrier Proprietary and Confidential
Installation and Operation Guide
HC32
Heat element 2
(4th stage heat)
Heat element 1
(3rd stage heat)
Fan (1 speed)
Compressor 2
Compressor 1
(3)
(2)
Heat pump
2 speeds (Low and High):
3 speeds (Low, Med., and High):
ON = Heat pump active in cool, OFF = Heat pump active in heat
ON = Electrical heater, OFF = Oil/Gas heater (no fan)
ON = Disable, OFF = Enable
ON = Use dehumidifier, OFF = Use reheat for dehumidification
ON = Economizer
OFF = Fan Medium (3 speeds) / Terminal not in use (2 speeds)
Important: Economizer will not work in 3 fan speeds configuration.
Config. 2:
HP42
1 Speed fan
(3)
(2)
26
Config. 3:
HP22
2/3 Speeds fan
Fan high
Fan medium
(or Economizer
)
(5)
Fan low
Compressor 2
Compressor 1
(3)
Heat pump
(2)
SW3.1 = OFF, SW3.2 = ON
SW3.1 = OFF, SW3.2 = OFF
CARRIER CORPORATION ©2024
Config. 4:
HP21
2/3 Speeds fan
Fan high
Fan medium
(or Economizer
)
(5)
Fan low
Heat element
(2)
Compressor
(3)
Heat pump
(2)
All rights reserved
Advertisement
Table of Contents
