York YHAU-CL Series - FIGURE 43 - Cooling Start Diagram - START; FIGURE 44 - Cooling Start Diagram - STOP

JOHNSON CONTROLS
92
FORM 155.30-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
SECTION 5 - COMMISSIONING
FIGURE 43 - COOLING START DIAGRAM - START
Remote/Local
Operation Change
Power on
Initialize Self-Check
Mechanism
Chilled/Cooling/Hot Water
Pump Interlock start
Chilled/Cooling/Hot
Water pump interlock
established
Solution Pump and
Refrigerant Pump start
Hot Water Valve Control
Open
Local Start Operation
Remote Start Operation
Air Conditioning Machine/
Cooling Tower Fan run
Defective Signal Output
Remote
Local
No
3 minutes
Yes
Time up
Temperature Control
running
Yes
Stop Operation
Dilution Time count
Hot Water Control Valve
close
Dilution time increasing
Chilled Water/
Refrigerant
Overcooling
Dilution
time stops
increasing
Yes
Solution Pump/
Refrigerant Pump
stop running
Dilution time up
No
Solution Pump/
Refrigerant Pump
continue running
Generator
pressure low
No
1
Pass 30 minutes
after dilution starts
No No
Yes
Yes
Solution Pump/
Refrigerant Pump
stop
Chilled/Cooling
Water Pump
Interlock stop
Absorption chiller
stops
Air Conditioning
Machine/Cooling
Tower Fan stop
Hot water pump stop
1
FIGURE 44 - COOLING START DIAGRAM - STOP