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13
Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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Table 3: Terminal Identification and Function.
TERMINAL IDENTIFICATION AND
FUNCTION FOR MS8650
Description / Application
Used in Applications: Indoor Air Quality, Heat Pump, and Rooftop Unit
Internal Temperature
X
1- BO1
Aux
2- BO2
Y2
3- BO3
Y1
4- BO4
G
5- RC
RC (24 Vac)
6- C
Common
7- RH
RH
8- BO8
W1
9- UO9
W2 / OB
10- UO10
Econo (0-10 Vdc)
11- UO11
Heat (0-10 Vdc)
12- UO12
Dehumidification output (24 Vac On/Off)
13- RS485 +
BACnet (+)
14- RS485 -
BACnet (-)
15- RS485 Ref
BACnet Ref.
16- UI16
UI16 (multifunction input)
17- UI17
UI17 (multifunction input)
18- Scom
Common
19- UI19
CO2 (0-10 Vdc input)
20- UI20
RS (Remote sensor input 10K thermistor)
21- Scom
Common
22- UI22
SS (Supply sensor input 10K thermistor)
23- UI23
OS (Outside sensor input 10K thermistor)
24- UI24
Airflow (0-10 Vdc input)