Johnson Controls HVWHP072B32S - Page 265

SM-18006
5-7
EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING
(2)
Input
Demand Stoppage (Control Function No.3),
Input
Forced Stoppage (Control Function No.5)
When the input terminals for Demand Stoppage or Forced Stoppage on the water source unit PCB are
short-circuited while running, the compressor(s) is stopped. The fan motor of indoor unit(s) is operated as
shown below.
The stoppage code No. “10” is given. In this case, if the input terminals are opened, operation is resumed.
NOTE:
Whendemandcontrol(ON/OFF)isperformed,itisrecommendedthatthecontrol(ON/OFF)timeisset
appropriatelyaccordingtotheheatload.Also,setthedemandcontroltimeapproximatelyoncein15
minutes at the minimum in consideration for saving energy.
•SettingExample
Demand Stoppage at Input 3 (between 1 and 2 pins of CN18)
Forced Stoppage at Input 3 (between 1 and 2 pins of CN18)
Demand Stoppage (Control Function No.3) Cooling:AirowSetting,HeatingLoSetting
Forced Stoppage
(Control Function No.5)
Function Setting “FE”=0 Stop
Function Setting “FE”=1 Cooling:AirowSetting,HeatingLoSetting
Control Circuit
X1
1
2
1
2
3
3P Connector
Water Source Unit
PCB
CN18
Wiring Diagram Example of Demand Stoppage or Forced Stoppage
SS3
Power
Supply
X1
X1: Auxiliary Relay
SS3: Demand Stoppage Switch