EXTERIOR FEATURES AND TOWING:

What are the exterior dimensions of the Wingamm 540.1 Oasi?

• Length: 17 feet, 10 inches
• Width: 7 feet, 5 inches
• Height: 10 feet with AC unit

Are the side mirrors foldable? How far do they extend?

• Yes, they are manually foldable and extend 17 inches from the body. They also include blind spot detection.

Is the rear view mirror digital?

• Yes.

Does it include a spare tire?

• A full-size spare tire mounted to the exterior rear of the Wingamm is available as an option.

What type of awning is included?

• A manual Fiamma awning is included. It is 8.5 feet wide and extends up to 6 feet.

Is there a bike rack option?

• Yes, both standard and e-bike rack options are available and are mounted to the rear exterior of the Wingamm.

What type of exterior shell does it have?

• The Wingamm Oasi 540.1 features a unique fiberglass monocoque body, which is a single-piece, seamless construction.
• This design provides superior insulation, strength, and resistance to water ingress, contributing to the vehicle's longevity and comfort.

INTERIOR AND SLEEPING ARRANGEMENTS:

What is the interior height?

• The interior height is 6 feet 6 inches at the rear and 6 feet underneath the drop-down bed however as you can see in this video a man who is 6 feet 2 inches tall is standing underneath the bed.

What are the sleeping arrangements and bed dimensions?

• Primary Bed: 77" x 53", supports up to 771 lbs (350 kg), operates manually (no latch or motor).
• Dinette Bed: Converts to a single bed measuring 72” x 47".

Are privacy curtains included?

• Yes, a privacy curtain is provided for the front cabin area.

How many storage compartments are there?

• There are 11 overhead push-lock storage compartments. Optional shelving can be added to the upper and lower closet areas.

Do the drawers have soft-close functionality?

• Yes, all drawers feature a soft-close system.

KITCHEN AND APPLIANCES:

What kind of refrigerator is included?

• The Indel EL85 is a 12V single-way fridge with a capacity of 22.4 gallons (85 liters - 3 cubic feet) and uses approximately 60 watts.

Are microwave and induction cooktop options available?

• Yes, both are optional. The microwave can be installed on the countertop or replace the top two drawers in the kitchen block.

Is the standard table swivel-mounted?

• Yes, the table is designed to swivel for convenience.

Is kitchen and bathroom ventilation provided?

• The kitchen includes a ventilation window. The bathroom has a ventilating ceiling fan on all units produced on 2025 Promaster chassis and going forward.

Is the showerhead adjustable?

• Yes, the showerhead is adjustable.

What are the appliance wattage requirements?

• Refrigerator: Approx. 60 watts
• Microwave (optional): Approx. 800 watts
• Induction cooktop (optional): Approx. 1,800 watts max
• Air Conditioner: Approx. 1,200 watts max
• Lighting system: Approx. 300 watts total max

CLIMATE CONTROL AND HEATING:

What heating and cooling system is included?

• Heating: Forced air Truma Combi system with 4 hot air vents, water heating, and radiant heated floors
• Cooling: Country Mod Pro Air Conditioner.

Can the Truma system run on propane, electricity, or both?

• Yes, it can operate on propane, electricity, or a combination. Settings can be adjusted using the Firefly or Truma panel.

Are the tanks heated and insulated for winter?

• Yes, all tanks are heated and insulated, making the unit suitable for four-season use. The tanks are heated via the forced air Truma Combi heater.

What is propane used for and how long does it last?

• Propane powers the cooktop and Truma heater. With moderate use, it typically lasts several days. The system supports either 20-pound (4.6 gal) or 30-pound (7 gal) BBQ-style tanks.

Is a gasoline-powered Truma system available?

• Yes, the Truma Combi G Comfort Plus (optional) utilizes gasoline from the 24 gallon chassis tank, electricity, or both. The Truma utilizes an auxiliary fuel line that only will draw down to 3/4 of the gas tank to ensure reserve for driving.

WATER AND PLUMBING SYSTEM:

What are the water tank capacities?

• Fresh Water: 26 gallons
• Gray Water: 18 gallons
• Cassette Toilet: 4.5 gallons

Does it use a black tank?

• No, it uses a cassette toilet system, allowing for easy disposal. Extra cassettes can be added and stored in the rear storage locker for extended use.

Are toilet chemicals required?

• No chemicals are required in the toilet bowl. Dometic recommends use of sanitary additives for the holding tank to decompose matter and prevent unpleasant odours. For this purpose, Dometic offers:
  • Dometic POWER CARE TABS
  • Dometic GREEN CARE TABS
  

How do I fill the fresh water tank?

• Through a gravity fill system. The tank cannot be filled via the city water connection. A city water connection can be used to supply water directly to the faucets, but not to fill the tank.

How are the gray tank and the fresh water tank emptied?

• Via a gravity dump system.

Where is the water pump located? Can it stay on?

• The water pump is located under the dinette seats, the pressure-regulated diaphragm water pump can remain on and activates automatically when any water fixture is used.

What is the insulation material between fiberglass layers?

• Polyurethane closed cell insulating foam.

What is the proper winterization process?

• Antifreeze is not allowed. Use the following air-drying method:
  1. Drain both fresh and gray water tanks using gravity dump and storage compartment release.
  2. Open all faucets, shower, and fixtures to drain remaining water.
  3. Close all fixtures.
  4. Connect a regulated (max 40 PSI) air hose to the city water connection.
  5. Open each faucet one by one to blow out residual water.
  6. Leave fixtures open after flushing to prevent pressure buildup.

POWER SYSTEM:

What’s included in the standard and upgraded power systems?

• Standard: Three 100Ah lithium batteries totaling 300Ah (Approx. 3800Wh), 2,000W inverter, powers 3 AC outlets, which are the outlet at the feet of the dinette, the one above the kitchen block and the one in the kitchen block.
• Upgraded: Four 150Ah lithium batteries totaling 600Ah (Approx. 7600Wh), 3,000W inverter (powers all 9 outlets: 5AC 120V outlets and 4 USB 5V & 12V outlets), and a secondary 170 amp alternator that is solely responsible for maintaining charge of your house battery bank.

Why consider the upgraded system?

• It offers faster battery charging, greater off-grid capacity, and full access to AC outlets without shore power.

What will the inverter power?

• Standard: 3 dedicated AC outlets.
• Upgraded: All AC outlets in the RV.

Is the generator included?

• No. However, The alternator that comes with the power upgrade option acts as an underhood generator.

How are the batteries charged?

• Vehicle alternator.
• Roof-mounted solar panel (up to 130W).
• 30 Amp Shore power connection.

Does it have solar power capabilities?

• Yes, a 130W solar panel system is included as standard, designed to supplement charging of the house batteries while off-grid.

What does the Firefly control system manage?

• For more information about the Firefly Control System, please visit Firefly’s website

Can the Firefly system be controlled via app?

• Yes, a Bluetooth-compatible app is in final development by Firefly and will allow remote control of systems.

CONNECTIVITY & ENTERTAINMENT:

Is a TV available?

• Yes, a 22-inch 12V television is available as an optional add-on.

Can Starlink be added?

• Yes, Starlink satellite internet can be added and installed by a certified Wingamm service center, but not as an add on option by Wingamm.

Does it include Apple CarPlay and Android Auto?

• Yes, both are supported.