VANNER
Incorporated
Owner’s Manual
LifeStar Owner’s Manual - 4 -
Section 2 : Introduction
Thank you for purchasing a Vanner Ambulance Power Module for your emergency vehicle. We are
confident you will be satisfied with its performance.
Vanner products are designed and manufactured by skilled professionals using the highest standards in
workmanship, guaranteeing excellent performance and reliability for your emergency vehicle. With
minimum maintenance and care, you can expect years of trouble-free service from your Vanner product.
The 20-1050CUL-DC is a 12 VDC to 120 VAC inverter with a built-in battery charger/conditioner, transfer
relay and KKK Spec 12V Portable Equipment Charging Circuit. This unit is equipped with an AC line cord
for connecting AC input power (shore/utility power) and a receptacle with a Ground Fault Circuit
Interrupter (GFCI) for AC output. This enables you to plug AC loads directly into the inverter. The DC
cables have quick connectors to facilitate installation and pre-wiring of emergency vehicles. The 12V
Portable Equipment Charging Circuit has a spring clamp for ease of installation. The transfer relay is
powered by +12Vdc, the unit must be connected to the DC source for the transfer relay to work.
The 20-1000TUL-DC is a 12 VDC to 120 VAC inverter with transfer relay and KKK Spec 12V Portable
Equipment Charging Circuit. This unit is equipped with an AC line cord for connecting AC input power
(shore/utility power) and a receptacle with a Ground Fault Circuit Interrupter (GFCI) for AC output. This
enables you to plug AC loads directly into the inverter. The DC cables have quick connectors to facilitate
installation and pre-wiring of emergency vehicles. The 12V Portable Equipment Charging Circuit has a
spring clamp for ease of installation. The transfer relay is powered by 120VAC, the transfer relay will
engage without the unit being connected to the DC source.
This manual is written around the 20-1050CUL-DC, all sections of this manual that refer to the Charger
section of the unit does not apply to the 20-1000TUL-DC.
Section 3. Functionality
WARNING : Battery input cables must be connected to the battery with proper polarity to avoid
damaging the inverter.
NOTE : If the battery is fully charged at the time AC input is applied, the unit will go directly into Ready/
Maintenance mode.
Inverter Function
The 20-1050CUL-DC converts battery power to 1050 Watts of 120 VAC modified sine wave power to
operate vital emergency vehicle equipment. The unit is easily connected to the positive and negative
posts of a battery system with appropriate fusing, and when turned on, produces 120 VAC True RMS
voltage.
The inverter also has an energy-saving feature called Load Demand. With this feature, the inverter output
is pulsed, significantly reducing the current draw from the battery until a demand is made on its output.
Continuous output of 120 VAC resumes when a load greater than 20 Watts is applied. The load demand
feature can be disabled with the Setup Switch on the front panel.
A built-in transfer relay switches the AC output receptacle from the inverter to the AC input when the unit
senses AC input from the shore/utility power.
(24 pages)
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