York YVAA - Page 146

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JOHNSON CONTROLS

146

SECTION 8 - MICROPANEL

Form 201.47-ICOM1

Issue date: 17/11/2022

The Compressor Displacement Setup option displays

the compressor type installed in the respective circuits.

This must be programmed in accordance with the com-

pressor data plate information to ensure the control al-

gorithms to cycle fans perform correctly. The follow-



• CTS24 = 62

• CTS36 = 82

• CTS45 = 100

• CTS51 = 128

• CTS70 = 187

• GTS75 = 217

The following setup OPTION display programs the

Maximum Compressor Speed of the chiller. This must

be programmed based on the PIN number (model

num¬ber) on the chiller data plate. See PIN number

39, 40 and 41 for the program value.

The following setup OPTION display programs the

Minimum Compressor Speed of the chiller. This is nor-

mally programmed for 50 Hz.

The following setup OPTION display programs the

Minimum Condenser Fan VSD start frequency when

quick start is selected.

The following Motor Temp Sensor OPTION displays

are selectable as ENABLED or DISABLED for the re-



The choices are as follows:

• NONE (default)

• TEMP SENSOR 1

• TEMP SENSOR 2

• TEMP SENSOR 3

SETUP MODE SYS 1 COMPRESSOR

DISPLACEMENT

◄ ► XXXXXXXXXXXXXXXXXXXXXXXXXXXX

SETUP MODE SYS 2 COMPRESSOR

DISPLACEMENT

◄ ► XXXXXXXXXXXXXXXXXXXXXXXXXXXX

SETUP MODE ◄DEF XXXXX LO XXXXX HI XXXXX

MAXIMUM COMPRESSOR SPEED = XXX.X HZ

SETUP MODE ◄DEF XXXXX LO XXXXX HI XXXXX

MINIMUM RUNNING SPEED = XXX HZ

SETUP MODE ◄DEF XXXXX LO XXXXX HI XXXXX

QUICK START VSD START FREQ = XXX HZ

If a motor temperature sensor fails, a single sensor may

be ignored by making a program change in the Unit

Setup Mode. The default setting is NONE, indicating

all sensors are being monitored.

SYS 1 & 2 MAXIMUM FAN SPEED

MIN DISCHARGE SUCT DIF

SETUP MODE SYS 1 MOTOR SENSOR TO

IGNORE ◄ ► XXXXXXXXXXXXXXXXXXXXX

SETUP MODE SYS 2 MOTOR SENSOR TO IG-

NORE

◄ ► XXXXXXXXXXXXXXXXXXXXXXXXXXXX

It is important to notify a qualied HVAC

service technician in the event a motor

temperature fails to prevent premature

failure of the compressor.

SETUP MODE ◄DEF XXXXX LO XXXXX HI XXXXX

VI DIFF TEMP OFFSET = XX.X °F

SETUP MODE ◄DEF XXXXX LO XXXXX HI XXXXX

SYS 1 MAXIMUM FAN SPEED = XXX %

SETUP MODE ◄DEF XXXXX LO XXXXX HI XXXXX

SYS 1 MIN DISCHARGE SUCT DIF= XX PSID

SETUP MODE ◄DEF XXXXX LO XXXXX HI XXXXX

SYS 2 MIN DISCHARGE SUCT DIF= XX PSID