P.O. Box 1306
Newport Beach
California 92663
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: techservice@newmarpower.com
www.newmarpower.com
Model: NP-12
12 Volt
Installation / Operation Manual
General Information
The NAV-PAC protects electronics from voltage spikes, power
surges, momentary power losses, abrupt voltage changes and
noise interference on incoming DC power to MDTs, GPS, and
other onboard Electronics prone to memory loss or “crashes”.
NAV-PAC is a solid state device which provides “pure” power
to navigation electronics by performing several essential
functions.
1) Voltage Spike Protection:
Engine cranking, pump and motor
operation send voltage “spikes” through a mobile electrical
system that often “bulldoze” their way through the electronic
circuitry. NAV-PAC eliminates this ruinous condition.
2) R.F. Noise Filtering:
The NEWMAR NAV-PAC contains a
four-element low-pass LC fi lter which provides very high radio
freqency attenuation in both positive and negative power
leads to the receiver preventing noise from adversely affecting
signal reception and related operation.
3) Back-Up Power:
A long-life, completely sealed “Dry Battery”
pack is built-in the NAV-PAC which acts as a power reservoir
and is charged from the onboard 24 Volt power. In the event
of a drop in DC voltage due to engine cranking or total power
interruption, the battery will maintain power to navigation and
communication equipment for a short period of time. This is
essential for preventing memory or data loss.
4) Timed Disconnect Circuit:
This circuit prevents damage to
the internal battery from extreme discharge by disconnecting
the NAV-PAC battery approximately 15 minutes after abrupt
drop or complete loss of DC input.
5) Low Battery Disconnect Circuit:
This circuit prevents damage
to the internal battery from extreme discharge by disconnecting
the battery whenever battery voltage reaches 10.2 VDC
Materials Provided
Your NAV-PAC comes with the following materials:
(4) #8 ring lugs for 12-10 gauge wire
(3) Butt connectors (for remote panel wiring)
(3) #8 ring lugs for 22-16 gauge wire (for remote panel wiring)
(1) Installation/Operation Manual
Check to see that these items have been included with the
packaging. For any missing items, please contact factory.
Installation
1) After you have determined the best location in the system,
locate a fl at surface close to the power line that feeds the GPS
or MDT. For best results, the NAV-PAC unit should be within 24”
of the critical electronics. The case need not be grounded, so
it is acceptable to mount the unit to wood or metal. Securely
mount the NAV-PAC.
Turn off power to the wires that will be cut or worked on by
disconnecting the battery or shutting off the appropriate circuit.
Identify the positive and negative lead in the power line and
cut at an appropriate location. Use the lugs supplied to hook
up the NAV-PAC to your system.
Note: Remove both fuses before wiring the NAV-PAC. Re-install
fuses only after carefully checking installation and wiring.
2) Using the table below, select the proper wire size for your
installation.
AMPS* CABLE LENGTH (feet)
10’
15’
20’
0 - 10 AMPS
14 AWG
12 AWG 12 AWG
10 - 20 AMPS
10 AWG
10 AWG 10 AWG
*Current draw of equipment being powered.
Replace terminal block cover to prevent accidental shortings
the terminals.
Important Installation Note:
If thre is to be a continuous load
on the NAV-PAC output during normal operations, the DC
input must be a minimum of 13.4 VDC to prevent discharge
of the internal battery.
M-NAVPAC-G
As of 052016
