22
it. Press the
key to return to the next higher level of
structure. Repeat the process as required for other items.
Adjusting the Contrast — The contrast of the display can be
adjusted to suit ambient conditions. To adjust the contrast of
the Navigator module, press the
key until the dis-
play reads “Select a menu item.” Using the arrow keys, move
to the Configuration mode. Press
to obtain access to
this mode. The display will read:
> TEST
OFF
METR
OFF
LANG
ENGLISH
PAS.E
ENBL
Pressing
will cause the “OFF” to flash. Use the up
or down arrow to change “OFF” to “ON.” Pressing
will illuminate all LEDs and display all pixels in the view
screen. Pressing
and
simultaneously
allows the user to adjust the display contrast. Use the up or
down arrows to adjust the contrast. The screen’s contrast will
change with the adjustment. Press
to accept the
change. The Navigator module will keep this setting as long as
it is plugged in to the LEN (Local Equipment Network) bus.
Adjusting the Backlight Brightness — The backlight of the
display can be adjusted to suit ambient conditions. The factory
default is set to the highest level. To adjust the backlight of the
Navigator module, press the
key until the display
reads “Select a menu item.” Using the arrow keys move to the
Configuration mode. Press
to obtain access to this
mode. The display will read:
> TEST
OFF
METR
OFF
LANG
ENGLISH
PAS.E
ENBL
Pressing
will cause the “OFF” to flash. Use the up
or down arrow keys to change “OFF” to “ON.” Pressing
will illuminate all LEDs and display all pixels in the
view screen. Pressing the up and down arrow keys simultane-
ously allows the user to adjust the display brightness. Use the
up or down arrow keys to adjust screen brightness. Press
to accept the change. The Navigator module will
keep this setting as long as it is plugged in to the LEN bus.
NOTE: If a value has been forced, a flashing “f” will be dis-
played next to the value.
Changing the Display Language —
The factory
default language is English. Several other languages are avail-
able, including Spanish, French, and Portugese.
REQUIRED CONFIGURATIONS — Table 3 shows the re-
quired configurations for Language Selection.
Table 3 — LANG (Language Selection)
Required Configurations
NOTE: When the Language Selection (
Configura-
tion
o
DISP
o
LANG
) variable is changed, all appropriate dis-
play expansions will immediately change to the new language.
No power-off or control reset is required when reconfiguring
Language Selection.
Changing the Units of Measure —
The factory de-
fault unit of measure is English (for example, °F, ^F, psi). The
display can be changed to metric units (for example, °C, ^C,
kPa).
REQUIRED CONFIGURATIONS — Table 4 shows the re-
quired configurations for Metric Display.
Table 4 — METR (Metric Display)
Required Configurations
NOTE: When the Metric Display (
Configura-
tion
o
DISP
o
METR
) variable is changed, all appropriate dis-
play expansions will immediately change to the new units of
measure. No power-off or control reset is required when recon-
figuring Metric Display.
Configuration and Service Password —
Items in
the Configuration and Service Test modes are password pro-
tected. The words PASS and WORD will flash on the scrolling
marquee. Press
for the digits 1111 to be displayed.
On the Navigator, press
Enter Password
and 1111 will be dis-
played. The default password is 1111. Use the arrow keys to
change each number if required and press
to accept
the digit. Continue with the remaining digits of the password.
CHANGING SERVICE PASSWORD — The password can
only be changed through CCN operator interface software such
as ComfortWORKS
®
, ComfortVIEW™, and Service Tool.
Caution should be exercised when changing the password.
Once changed, the only way to determine the password is
through one of these devices. To view or change the password,
use the CCN Variable PASSWORD found in Service Configu-
ration/Display.
Carrier Comfort Network
®
(CCN) Interface —
The 38AP units can be connected to the CCN if desired. The
communication bus wiring is a shielded, 3-conductor cable
with drain wire and is supplied and installed in the field. See
Table 5. The system elements are connected to the communi-
cation bus in a daisy chain arrangement. The positive pin of
each system element communication connector must be wired
to the positive pins of the system elements on either side of it.
This is also required for the negative and signal ground pins of
each system element. Wiring connections for CCN should be
made at LVT. See Fig. 18 and consult the CCN Contractor’s
Manual for further information.
Table 5 — CCN Communication Bus Wiring
SUB-
MODE
ITEM
DISPLAY
ITEM
DESCRIPTION
COMMENT
DISP
LANG
X
Language
Selection
Default: 0
Range: 0 to 3
0=English
1=Espanol
2=Francais
3=Portugese
ESCAPE
ESCAPE
ENTER
ENTER
ENTER
ENTER
ESCAPE
ENTER
ESCAPE
ENTER
ENTER
ENTER
ENTER
SUB-
MODE
ITEM
DISPLAY
ITEM
DESCRIPTION
COMMENT
DISP
METR
OFF/ON
Metric Display
Default: OFF
OFF=English
ON=Metric
MANUFACTURER
PART NO.
REGULAR WIRING
PLENUM WIRING
Alpha
1895
—
American
A21451
A48301
Belden
8205
884421
Columbia
D6451
—
Manhattan
M13402
M64430
Quabik
6130
—
ENTER
ENTER