VANNER
Incorporated
Owner’s Manual
LifeStar Owner’s Manual - 7 -
Section 5: Installing the 20-1050CUL-DC
Unpacking the Ambulance Power Module
Inspect the shipping container and equipment for loose or damaged parts. If any damage is found,
immediately notify the freight carrier.
Installing the Ambulance Power Module
1. Verify the inverter ON OFF/Reset switch is in the OFF position (The button should NOT be pushed
in.) Make sure power to the vehicle wiring harness is disconnected.
2. Select a location for the unit. An ideal installation location has the following characteristics:
Close to the battery (not in the same enclosure)
Protected from the weather
Well ventilated
Air enters by the fan at the rear of the unit, and exits through the sides of the unit.
For maximum unit performance, avoid recirculating the same hot air through the unit.
3. Route DC input cables.
Route the negative and positive DC input cables from the inverter (through the quick connector) to the
battery. If required, protect cables where they contact hard, sharp edges.
DC Cable Length
Size (AWG)
Maximum Distance (FT)
2 AWG
12ft
1/0
20ft
4. Install inline fuse.
Install an inline fuse in the red, positive DC input cable between the battery and inverter,
within 18 in. of the battery or DC wiring bus system.
Vanner recommends using
Bussmann ANN-150 Fuse and #4164 Fuse Holder (Vanner P/N: 014838 Fuse and 03637 Holder) or
Feraz-Shawmut CNN-150 Fuse and #4164 Fuse Holder.
5. Connect bonding lug.
Use an 8AWG or larger copper conductor to connect the chassis bonding lug to the vehicle chassis.
6. Connect the inverter to the battery.
Connect the black, negative DC input cable from the quick connector to the battery negative (-)
terminal. This battery negative terminal is usually where the battery negative connects to the engine
block or frame. Connect the red, positive DC input cable from the quick connector to the in/line fuse
near the battery positive (+) terminal. This battery terminal is usually connected to the DC electrical
system at the battery side of the Battery Disconnect Switch.
7. Connect DC Power Source terminal to DC loads
Connect the output from the DC Power terminal on the front panel of the Inverter to equipment
locations on the vehicle, 20Adc max.
Max wire size is 12AWG, use the supplied “Vanner” screwdriver
for this terminal.
8. Select Load Demand option.
Select Load Demand option if desired, using the proper switch position on the front panel Setup
Switch. With Load demand ON, the inverter conserves battery energy and operates only when a load
greater than 20 Watts is applied. (Factory setting is OFF).
