LG MultiSITE MS8250 Installation Manual page 15

TERMINAL IDENTIFICATION AND FUNCTION
Reheat - Duct
Supported output types:
• 0-10 Vdc Direct Acting
• 0-10 Vdc Reverse Acting
• 2-10 Vdc Direct Acting
• 2-10 Vdc Reverse Acting
• Floating
Table 5: Terminal Identification for Duct Heater.
0-10 Vdc Analog Duct Heater
Terminal
5
6, 18, or 21
12
Floating Duct Heater
Terminal
6, 18 or 21
10
12
On/Off or PWM Duct Heater
Terminal
6, 18 or 21
12
Reheat - Baseboard
The MS8250 controls baseboard heaters through:
• Relay = 4 CPH (Cycles Per Hour)
• PWM = 10-second duty cycle
• Valve (Normally Open or Normally Closed) = 8 CPH (Cycles Per Hour)
Table 6: Terminal Identification for Baseboard Reheat.
Relay with Transformer (Dry Contact)
Terminal
7
8
24 Vac ~
Terminal
5
6, 18, or 21
7
8
• On/Off
• PWM
• Valve NC
• Valve NO
Name
RC / 24 Vac ~ Hot
C / 24 Vac ~ Common
UO12
Name
C / 24 Vac ~ Common
UO10
UO12
Name
C / 24 Vac ~ Common
UO12
Name
RH
BO8
Name
RC / 24 Vac ~ Hot
C / 24 Vac ~ Common
RH
BO8
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Connection
24 Vac ~ Hot
24 Vac ~ Common
0-10 Vdc Output
Connection
24 Vac Common
24 Vac ~ Open Damper Actuator
24 Vac ~ Close Damper Actuator
Connection
24 Vac ~ Common
24 Vac ~ Output
Supported output types:
• Relay On/Off
• PWM
• Valve NC
• Valve NO
Connection
Room Controller Terminal 5 (24 Vac)
24 Vac to Baseboard
Connection
Room Controller Terminal 7 (RH)
24 Vac Common
Room Controller Terminal 5 (24 Vac)
24 Vac ~ to Baseboard
Required Settings
Duct Heater Configuration:
• 0-10 Vdc Direct Acting, or
• 0-10 Vdc Reserve Acting
Required Settings
Duct Heater Configuration: Floating
Required Settings
Duct Heater Configuration:
• On/Off, or
• PWM, or
• Valve NC, or
• Valve NO
Required Settings
Baseboard Reheat: Relay
Required Settings
Baseboard Reheat:
• Relay, or
• PWM, or
• Valve NC, or
• Valve NO
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