11
12
13
14
15
16
SW1
SW2
Fan on/off: 110-230VAC, 2.5A max., Humidifier, Dehumidifier: 0-10VDC. 0.5mA Not isolated
Control - Heat elements, Heat pump, Compressors, Economizer: 110-230VAC, 0.3A max.
Wiring and DIP Switches – AC systems
HC21
2/3 Speeds fan
(1)
,
Humidifier,
Dehum/Reheat for
Dehumidification
Compressor
(3)
8
7
6
5
4
3
2
1
6
5
4
3
2
1
Fan medium
(or Economizer
(5)
)
Fan high
Fan low
Heat element 1
(2)
(1
st
stage heat)
8
7
6
5
4
3
2
1
6
5
4
3
2
1
HP21
2/3 Speeds fan
(1)
,
Humidifier,
Dehum/Reheat for
Dehumidification
Compressor
(3)
Heat pump
(2)
8
7
6
5
4
3
2
1
6
5
4
3
2
1
Fan medium
(or Economizer
(5)
)
Fan high
Fan low
Heat element
(2
nd
stage heat)
13
14
- 23 -
AO1
AO2
Heat element 2
(2
nd
stage heat)
Humidifier
Dehumidifier
(4)
(option - See SW2.3)
Humidifier
Dehumidifier
(4)
(option - See SW2.3)
HC22
1 Speed fan,
Economizer,
Humidifier,
Dehum/Reheat for
Dehumidification
Heat element 2
(2
nd
stage heat)
Fan (1 speed)
Compressor 2
(3)
Compressor 1
(3)
HP32
1 Speed fan,
Economizer,
Humidifier,
Dehum/Reheat for
Dehumidification
Fan (1 speed)
Heat pump
(2)
8
7
6
5
4
3
2
1
6
5
4
3
2
1
8
7
6
5
4
3
2
1
Heat element
(3
rd
stage heat)
6
5
4
3
2
1
15
16
Humidifier
Dehumidifier
(4)
(option - See SW2.3)
Humidifier
Dehumidifier
(4)
(option - See SW2.3)
Heat element 1
(2)
(1
st
stage heat)
Compressor 2
(3)
Compressor 1
(3)
Economizer
Economizer
(1)
SW1.1, SW1.2 = Fan speeds: 2 Speeds (Low and High):
SW1.1 OFF, SW1.2 ON
3 Speeds (Low, Med. and High): SW1.1 OFF, SW1.2 OFF
(2)
SW1.4 = 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)
SW1.5 = Compressor delay: ON – Disable compressor delay, OFF – Enable compressor delay
(4)
SW2.3 = Dehumidification:
ON – Use dehumidifier,
OFF – Use reheat for dehum.
(5)
SW2.6 = Terminal 12:
ON – Economizer
OFF – Fan Medium (3 Speeds) / Terminal not in use (1/2 Speeds)
Important: Economizer will not work in 3 fan speeds configuration
