Seq
Port
1
OUT1
Circulating Water Pump
2
OUT2
Hot Water Electric Heating
3
OUT3
Air-Conditioning Valve Off
4
OUT4
Air-Conditioning Valve On
5
OUT5
6
OUT6
7
OUT7
8
D08
9
D09
Electric Heating For Heating
10
D010
11
D011
12
D012
Air-Conditioning Valve On
13
D013
Air-Conditioning Valve Off
14
D110
Forced Cooling Switch
15
D19
16
D18
Forced Heating Switch
17
D17
Expansion Board Output Definition
Description
Hot Water Valve On
Hot Water Valve Off
Reservation
Chassis Heating
Hot Water Valve Off
Hot Water Valve On
Gnd
Gnd
Seq
Port
18
D16
19
D15
20
D14
21
D13
22
D12
23
D11
24
TH1
25
TH2
Water Outlet Temperature
26
TH3
27
TH4
28
TH5
Freeze Protection Temperature
29
COM8
30
ECL
31
COM2
32
COM2
33
COM1
34
AC-L
42
Description
Forced Hot-Water Switch
Gnd
Linkage Switch
Gnd
Water Flow Switch
Gnd
Water Inlet Temperature
Water Tank Temperature
Cooling Coil Temperature
Water Flow Meter
Serial Communication
Rs485
Rs485
Rs485
Firewire Input
V.1