Operating instructions

Normal Stop
By Temp Control
Start
HM Pump
On (Note)
C/H Water
Pump On
C/H
WTR/Pump
OPG
No
Yes
Stop
C/H
Water
Temp
Operation
Heating
CLG/HTG
Cooling
CW Pump On
No
CW
Pump
OPG
Yes
Heating
CLG/HTG
CW
Temp
Low
Cooling
No
CTF On
Normal
Operation
Yes
HM Pump On
or HM Bypass
Valve Open
Cooling Water Temp. Control
84.2
o
F
80.6
o
F
On
Off
CTF
Normal
Operation
Abnormal
Stop
No
Stop
Yes
Operation
OL
Normal
C/H
Water
Temp
Chilled Water
Temp. Control (Std)
50.9
o
F
43.7
o
F
On
Off
WT1
Hot Water
Temp. Control (Std)
126.5
o
F
135.5
o
F
On
Off
WT4
WFC-SC/SH WFC-SH
Normal Stop
By Temp Control
HM Pump Stop
or HM Bypass
Valve Close
Heating
CLG/HTG
Cooling
Standby
Continuous Operation
Of C/H Water Pump
Continuous Operation
Of C/H Water Pump
CW Pump Stop
After Time Delay
Continuous Operation
Of HM Pump (Note)
Continuous Operation
Of HM Pump (Note)
Solution Pump Stop
After Time Delay
HM Pump Stop or HM Bypass
Valve Close Immediately
Abnormal
Stop
Alarm
Manual
Stop
HM Pump Stop
or HM Bypass
Valve Close
CLG/HTG
CW Pump Stop
After Time Delay
CTF Stop
After Time Delay
HM Pump Stop
Immediately (Note)
Solution Pump Stop
After Time Delay
HM Pump Stop or HM Bypass
Valve Close Immediately
Heating
Cooling
C/H Water Pump Stop
After Time Delay
C/H Water Pump Stop
Immediately
HM Pump Stop
Immediately (Note)
9
Fig. 6 CONTROL SEQUENCE
START-UP
LEGEND
C/H: Chilled/Hot
WTR: Water
OPG: Operating
TEMP: Temperature
CLG: Cooling
HTG: Heating
CW: Cooling Water
CTF: Cooling Tower Fan
HM: Heat Medium
OL: Motor Overload
NOTE: Optional control
of HM PUMP when HM
BYPASS VALVE installed to
control heat input.
OPERATION
NORMAL STOP
MANUAL / ABNORMAL STOP