VANNER
Incorporated
Owner’s Manual
VTS Series 1500Watt 9 True Sine Wave Inverter/AC transfer Switch
3-1-9. AC Frequency Selection:
AC output frequency is selected by Dip Switch “S4”.
Important Note: 60Hz AC loads may be damaged if 50Hz is selected.
The unit must be turned OFF/ON to accept new dip switch settings.
Frequency
S4
50 HZ
OFF
60 HZ
ON
3-1-10. Load Demand (Power Saving Mode):
The Load Demand feature allows the inverter to "go to sleep" if the inverter is ON but no AC loads are present.
Load Demand is adjustable via Dip Switches S1, S2 and S3 on the front panel.
Example: With the Load Demand Threshold watt setting at 40W, a load greater than 40W is required to "keep the
inverter awake" to produce AC power. If the AC load falls below 40W the inverter will "go to sleep", entering Load
Demand power saving mode.
The unit must be turned OFF/ON to accept new dip switch settings.
Load Demand
Threshold Watts
S1
S2
S3
Load Demand OFF
OFF
OFF
OFF
20W
ON
OFF
OFF
40W
OFF
ON
OFF
55W
ON
ON
OFF
75W
OFF
OFF
ON
95W
ON
OFF
ON
115W
OFF
ON
ON
135W
ON
ON
ON
3-1-11. DC Input Terminals:
Connect DC cables, battery positive (+) to inverter positive (red); battery negative (-) to inverter negative (black).
Be aware, there will be a large spark when the last DC connection is made. Be very careful to NEVER connect DC
terminals to the inverter backwards (inverter positive to battery negative). Reverse polarity connection may cause
permanent damage to the inverter.
Model
DC Input Voltage
Minimum
Maximum
12 V
10.5
15.0
24 V
21.0
30.0
