While on the correct configuration – Carrier 040-420 User Manual

Page 45

Table 12

Factory Configuration Keystrokes

To change a configuration enter the new configuration

and press

while on the correct configuration.

S U B -

F U N C T I O N

3 FACTORY

C F G

DISPLAY

COMMENTS

F A C T CFG

x x x x x x x x

F A C T O R Y

C O D E S

Configuration
C o d e 3

Configuration
C o d e 4

S R V C F G

S E R V I C E

x x x x x x x x

Adiustable Field Configurations After logging on, press

to enter subfunction. The subfunction allows oper-

ation of the chiller to be customized to meet the particular
needs of the application. The chiller comes from the fac-
tory

to meet the needs of most applications.

Each item should be checked to determine which configu-
ration alternative best meets the needs of a particular appli-
cation. See Table 13 for factory loaded configuration codes

and alternative configurations.

If processor module is replaced, the replacement module

is preloaded with factory default configuration codes. Each
configuration code must be checked and, if necessary, re-
configured to

meet needs of the application. See

Table 13 for pre-loaded service replacement configuration
codes.
Service Configuration Codes Press

to enter the

service configuration subfunction. The first 2 items under
this subfunction are 2 groups (8 digits each) of configura-
tion codes that are downloaded at the factory. If processor
module is replaced in the field, the 2 groups of configura-

tion codes must be entered through the keypad and display
module. The 2 groups of configuration codes (groups 7 and
8) that apply to the unit being serviced can be found on a
label diagram inside the control box cover. See Table 12
for keystroke information to enter configuration codes 7
and 8.
SCHEDULE FUNCTION This function provides a means
to automatically switch chiller from an occupied mode to
an unoccupied mode, When using schedule function, chilled
water pump relay must be used to switch chilled water pump
on and off. Connections for chilled water pump relay are:

and

(040-210 and associated modular units)

and

(225, 250, and 280 units). The chilled

water pump relay starts chilled water pump but compres-
sors do not run until remote chilled water pump interlock
contacts are between

and

and associated modular units, or between

and

250, and 280

units are closed and

leaving chilled water temperature is above set point. If a
remote chilled water pump interlock is not used, the first
compressor starts (upon a call for cooling) approximately
one minute after chilled water pump is turned on.

Table 13

Adjustable Field Configurations

ITEM AND CODES

CCN

address

(Entered by CCN Technician)

CCN Bus Number

(Entered by CCN Technician)

CCN Baud Rate
(Entered by CCN Technician)
Cooler Fluid Select

1 = Water (38 to 70 F

to 21 C] Set Point)

2 = Medium Brine (15 to 70 F

f-9 to 21 C] Set Point)

Unit Select

0 = English
1 = Metric

Display Language Select

English

No. Circuit A Unloaders

0 = No Unloaders

1 = One Unloader
2

Two Unloaders

No.

B Unloaders

No Unloaders

One Unloader

2 = Two Unloaders

Hot Gas Bypass Select

0 = N o V a l v e

Loading Sequence Select

= Equal Circuit Loading

2 = Staged Circuit Loading

Lead/Lag Sequence Select

1 = Automatic

Pressure Switch Select

0 = Not Used

1 = Air Cooled

Head Pressure Control Type

0 = Not Used

1 = Air Cooled

Head Pressure Control Method

1 = EXV Controlled

Set Point Control for

Both Circuits

3 = Set Point Control for

Circuit A; EXV Control
for Circuit B

4 = Set Point Control for

Circuit B; EXV Control
for Circuit A

C o o l i n g Set Point

Control Select

0 = Single Set Point Control

1 = External Switch

Controlled Set Point

Clock Controlled

Set Point

Cooling Reset
0 = No Reset

Control Select

= Return Fluid Reset

2 = External Temperature

Reset

3 = 4-20

Controlled

Reset

External Reset Sensor Select

0 = Thermistor Connected to

O p t i o n s M o d u l e

1 = Obtained Through CCN

Demand Limit Control Select

0 = No Demand Limiting

1 = Two External Switch Input

2 External 4-20

3 = CCN Load Limiting

(Multi-Unit)

CCN

Interface

Ramo Load Select

Enabled

Cooler Pump Interlock Select
0 = No Interlock
1 = With Interlock
Cooler Pump Control Select
0 = Not Controlled

1 = ON/OFF Controlled

FACTORY

001

0 0 0

9 6 0 0

= Standard Models

= Brine Models

190-210';

L E G E N D

Carrier Comfort Network
Electronic Expansion Valve

*And associated modular units

SERVICE

C O D E