Furrion ATS series User manual

50amp 125/250V Automatic Transfer Switch
F50-ATS
Furrions ATS is used to safely switch automatically between mutiple power sources

Furrion’s 50amp Automatic Transfer Switch with built in safe switch interlock system
is used to automatically switch between two separate 120/240 volt AC power sources,
these power sources can be from a Generator, shore power cord or inverter.
The function of the Furrion Automatic Transfer Switch is to provide a safe and smooth
switch over from an inverter or shore power cord automatically when a generator is
started and brought online, the Furrion ATS oers the added feature of a mechanical
interlock between contactors to ensure both contactors cannot be closed in parallel
which could otherwise create an over voltage situation on the output line.
The electrical contacts in the transfer switch are normally in the open position, once
AC voltage is applied to input 1 this will automatically close the contacts in contactor 1
and feeds the output line from the shore power cord or inverter.
Once AC power from the Generator is sensed by the transfer switch at Input 2 terminals,
this will start a timer and automatically switch over to generator power supply after a
20-30 second delay which ensures the generator has sucient time to run up to speed
before electrical load is applied.
PLEASE READ ALL SAFETY INSTRUCTIONS BEFORE INSTALLING THIS TRANSFER SWITCH!
WHEN PROTECTED BY A MOLDED CASE CIRCUIT BREAKER RATED TO 50AMPS OR LESS,
THIS LINE/GENERATOR SWITCH IS RATED TO 5000 SYMMETRICAL AMPS.
BEFORE PREFORMING MAINTENANCE OR INSTALLATION PLEASE ENSURE TO ISOLATE
ALL POWER SOURCES!
Ensure generator is shut o and auto start feature (if applicable) is isolated.
Conrm external power cord is disconnected and stored in an area where it
cannot mistakenly be plugged in.
Conrm the inverter (if used) has been disconnected.
Conrm with an AC/DC electrical tester that no voltage is present at any of the
connections before beginning installation or maintenance.
Label all electrical parts with a warning tag to show work is in progress before
beginning work.
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Furrion warranties this transfer switch in the Continental Untied States of America
and Canada from defects in materials or workmanship under normal use for 1 year
from date of purchase.

INSTALLING YOUR F50-ATS:
There are 3 common installation congurations for the Furrion ATS series:
Conguration 1: Double power feed
This is the standard installation used between a shore power cord and generator.
Input 2 Input 1
F50-ATS
Transfer switch
Output feed
100
100
50
50
75
75
50
50
50
50
70
70
15
20
20
15
15
20
20
50
50
20
30
20
30
75
75
20
20
60
60
20
20
20
20
20
20
20
20
20
DISTRIBUTION PANEL /
BRANCH CIRCUITS
50Amp Generator/Power Cord
System Wiring
Typical RV Wiring Layout
EXAMPLE. 1
SHORE POWER CORD
50Amp 125/250 VAC 12KW
FURRION PULL SMART PLUG FEATURED BELOW
GENERATOR
50Amp 125/250 VAC 12KW Generator
Conguration 2: Triple power feed (same rating)
This conguration is used when a inverter is added to the system and requires automatic
switch over. See Diagram 2 which illustrates this conguration
Input 2 Input 1
F50-ATS
Transfer switch
Output feed
100
100
50
50
75
75
50
50
50
50
70
70
15
20
20
15
15
20
20
50
50
20
30
20
30
75
75
20
20
60
60
20
20
20
20
20
20
20
20
20
GENERATOR
50Amp 125/250 VAC 12KW Generator
SHORE POWER CORD
50Amp 125/250 VAC 12KW
FURRION PULL SMART PLUG FEATURED BELOW
DISTRIBUTION PANEL /
BRANCH CIRCUITS
Input 2 Input 1
F50-ATS
Transfer switch
Output feed
POWER INVERTER
MAX 6000W
EXAMPLE. 2
Main Power Supply Wiring, with
50amp Sub Panel Inverter Feed.

Conguration 3: Triple Power Feed (double distribution panel)
This conguration is used when it is required for multiple power sources to feed sub
distribution panels
Input 2 Input 1
F50-ATS
Transfer switch
Output feed
100
100
50
50
75
75
50
50
50
50
70
70
15
20
20
15
15
20
20
50
50
20
30
20
30
75
75
20
20
60
60
20
20
20
20
20
20
20
20
20
DISTRIBUTION PANEL 1
Input 2 Input 1
F30-ATS
Transfer switch
Output feed
POWER INVERTER
MAX 3000W
EXAMPLE. 3
100
100
50
50
75
75
50
50
50
50
70
70
15
20
20
15
15
20
20
50
50
20
30
20
30
75
75
20
20
60
60
20
20
20
20
20
20
20
20
20
DISTRIBUTION PANEL 2
SHORE POWER CORD
50Amp 125/250 VAC 12KW
FURRION PULL SMART PLUG FEATURED BELOW
GENERATOR
50Amp 125/250 VAC 12KW Generator
Main Power Supply Wiring, with
30amp Sub Panel Inverter
Feed.
Warning:
The Furrion F50-ATS is not suitable to be used with Medical life support equipment.

For mounting and installing the transfer switch you will require:
3 x 1” Cable strain relief’s
4 x Self tapping screws with a minimum length of 30mm to mount ATS box
1 x Torque screw driver with square head #2
1 x Philips screw driver #2
MOUNTING YOUR F50-ATS:
The Furrion ATS is best mounted indoors or in a location sheltered from outdoor elements.
The selected area must be free from the possibility of contaminates and away from water
pipes, pumps, battery compartments and storage areas for ammable liquids.
Do not mount the ATS in a engine compartment.
The ATS mounting location must be accessible after installation is complete to facilitate
future servicing, if possible mount the ATS close to power cord Point of entry or generator
output.
Typical examples of mounting locations are:
Inside seat or bed compartments
Above or behind cabinets’
Under oor storage compartments, etc.
To mount the ATS box the 4 screw lugs on the outside of the box can be used to secure,
the ATS box also has an alternative 4 screw holes inside the box which can also be used.
Punch out 3 of the large diameter cable strain holes on the side of the box in the
directions which the cables will be fed from using a blunt object. Ensure to remove all
plastic pieces of the punch out cable strain holes by rotating the ATS box upside down.
Hold the transfer switch to the desired position and using 4 self-tapping screws secure
the transfer switch box. Ensure the switch is securely mounted so it cannot move or vibrate.
Once the ATS is securely mounted then screw in the 3 cable strains into the punch out holes
and back o the cable strain screws.

WIRING YOUR F50-ATS:
50amp 125/240VAC Wiring
Ground = Bare copper wire or green
Neutral = White
Live/Hot L1 = Black
Live/Hot L2 = Red
50amp 120VAC Wiring
Ground = Bare copper wire or green
Neutral = White
Live/Hot = Black
Using the quick reference wiring guide on the lid of the ATS box, arrange the wires to be
fed into the ATS for connection at the corresponding terminals.
Generator in
Shore Power in
Line/feed out
Ensure to feed the wires through the cable strains when they enter to ATS box.
Shore power and generator cables should be fed into the ATS from the side marked
on the box sticker.
The line out wires will enter the ATS from the opposite side.
See below diagram for wiring layout.
Strip 4” of outer jacket from each of the incoming cables.
Strip ½” of jacket from each of the wire conductors.
Connect the colored wires to the ATS terminals using the diagram above
Using your #2 (Robertson’s) square head torque Screwdriver, tighten the terminal screws
to 20in-lb minimum and 25in-lb maximum
Connect the chassis grounding 8AWG wire to the grounding terminal block on the inside
of the transfer switch box. Use the 3/8”through hole to feed the wire through from the
outside of the box directly to the terminal block.
Using your #2 Square Head Torque Screwdriver, tighten the grounding block terminal
screws to 20in-lb minimum and 25in-lb maximum.

PLEASE READ THE FOLLOWING SAFETY INSTRUCTIONS...
Follow the below steps to test the function of the F50-ATS.
BEFORE TESTING:
Ensure air conditioning units and other high current users are switched o. It is
harmful for the transfer switch to switch over power sources while under load.
Shut down all power sources to the RV
Label power sources clearly that testing is in progress.
If accessible, remove the lid of the ATS to visually check function.
ATS FUNCTION TESTING:
1. Plug in the shore power cable and turn on the dockside shore power breaker, as soon
as the shore side breaker is turned on you will hear a clunk noise immediately as the
shore power contactor engages inside the ATS, power is then supplied to the RV from
the ATS line out feed.
2. Turn o the shore side power breaker to shut down power to the RV, you will hear a
clunk as the Shore power contactor disconnects (keep the shore power cord connected
with no power for further testing).
3.Start the Generator in the RV and wait for it to run up to speed, as soon as power is fed
to the ATS from the generator the green LED indicator light on the internal ATS PCB will
illuminate, the ATS has a 20-30 second time delay before engaging the internal contactor
to allow for the generator to warm up. After 20-30 seconds you will hear a clunk noise as
the generator contactor engages inside the ATS, power from the generator is now supplied
to the RV from the ATS line out feed.
4. Shut down the generator
ATS SWITCHING TESTING:
To test the switching function after both function tests have passed:
1. Turn on the shore cord shore side breaker to engage the shower power contactor, power
is now being supplied to the RV by the shore power.
2.Start the generator and wait for it to warm up, after 20-30 seconds you will hear a clunk as
the unit automatically switches over power sources from shore power to generator.
3.Turn o shore power from the shore side breaker and conrm the generator is feeding the
line out, the power supply should not be interrupted by doing this.
4.Turn on the shore power shore side breaker again which will engage the shore power
contactor. While the shore power is still connected and on, then turn o the generator, this
will then disengage the generator contactor and automatically switch to running on shore
power feed.

TROUBLESHOOTING YOUR F50-ATS:
In the event of a problem with your F50-ATS, contact a qualied electrician for advice.
COMMON PROBLEMS:
Transfer switch will not switch over from Shore Power to Generator feed.
Possible cause: Bad PCB.
How to check: Open the transfer Switch lid so the PCB in visible, do not put your hands or
touch anything parts inside the box.
Turn on the generator so electric is being fed to the ATS, using a multi meter check for
correct voltage at the incoming generator wiring terminals.
If the correct power is being fed to the ATS from the Generator the ATS PCB’s the green
LED illuminated. After 30 seconds if the contactor does not close
If the PCB’s green LED is not illuminated while generator voltage is present indicates
the PCB has been damaged and will need replaced.
Contact your nearest Furrion Dealer, RV OEM or email suppor[email protected]
POSSIBLE CAUSES FOR F50-ATS PROBLEMS:
INGRESS OF FOREIGN OBJECTS INSIDE ENCLOSURE:
Reasons:
Poor installation can cause wood chippings, sawdust, metal lings, or other foreign
matter to enter the case.
Unsuitable mounting position can cause condensation, moisture or dirt to enter the
enclosure,
Potential Damage: Contactor does not function properly, burned out coils, Metal particles
can cause re or short the PCB.
FLUCTUATING POWER OR POWER SPIKES:
Reasons:
Lighting strikes,
Unbalance load at park,
Park Black outs
Utility service at park is undersized or located next to an industrial environment.
Potential Damage: burnt out contactor coils, PCB damage, pitted contacts, further
damage to the RV.
LOW VOLTAGE POWER SUPPLY:
Reasons:
Bad or corroded electrical connection,
Extension cord length too long
Operating too much load for power available.
Park power supply insucient
Potential Damage: Pitted contacts, burnt out contactor coils, further damage to the RV.
GENERATOR FEED:
Reasons:
Generator requires maintenance,
Generator Governors or throttle problems
Generator Auto Start/Stop failure.
Potential Damage: Burnt out contactor coils, PCB damage, pitted contacts, further
damage to the RV.

111.0
238.0
93.8
226.0
189.0
160.0
130.0
There are 2 options for mounting the Furrion F50-ATS:
Internal holes: 160 x 130mm (6 / x 5 / )
516 18
Option One: Using the external lugs which are located on the
outside of the box.
Mounting dimensions for the external lugs are:
Outer Lugs : 189 x 220mm (7 / x 8 / )
11 16
716
Option Two: Using the 4 x internal holes which are located on the
inside of the box.
Mounting dimensions for the internal holes are:
814
/
16
4
3
/
8
9
3/8
8
3
/
8
5
1/8
7
7/16
6
6/16