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Description of the Wallas Nautic 40D as a marine diesel furnace for recreational use.
Key technical specifications for the Wallas 40D furnace, including fuel, voltage, capacity.
List of all items included in the Wallas 40D furnace package.
Instructions for attaching control panels to the wall, including flush mounting.
Minimum clearance needed under the furnace for maintenance and installation.
Details on exhaust pipe length limits, turns, and through-hull fitting placement.
Guidance on securing the exhaust gas pipe with a hose clamp and overlap.
How to attach blow and suction duct systems using hose clamps.
Wiring details for solenoid valve/hourmeter and control panel connections.
Method for routing exhaust pipe when nipple is over 12" above hull point.
Installation method for exhaust pipe when nipple is less than 12" above hull point.
Recommendation to cover the exhaust pipe with fiberglass insulating sock.
Recommendations for furnace placement relative to the fuel tank level.
Details on warm-air duct connections, length limits, and outlet vent regulation.
Explanation of inlet air for the furnace and its connection to two 3-inch ducts.
Guidance on fresh air and return air duct placement and length.
Warning against installing the furnace in areas with potential gasoline fumes.
Steps for starting and operating the furnace in HEAT mode.
Instructions for operating the furnace in VENT mode for air circulation.
Procedure for switching off the furnace and its cooling cycle.
Diagram and labels for the basic control panel components.
Recommendation to service according to general Wallas equipment guidelines.
How indicator lights show system faults and how to reset them.
Table detailing error states and corresponding indicator light blinks.
Instructions for connecting an external thermostat to the #3004 control panel.
How the thermostat adjusts furnace power between minimum and set power.
Diagram showing external thermostat connections to the control panel.
Diagram illustrating a typical Wallas Nautic 40D installation.
Diagram showing installation with a defroster boost fan.
Important notes regarding fuel tank height, makeup air, and power lead gauge.
Description of polyethylene fuel line kits and tank adapter kits.
Step-by-step guide for assembling the three-part compression fuel line fitting.
Note on ABYC and NMMA rules for fire-rated fuel lines in vessel applications.
Checklist items for choosing the device place and ensuring air supply.
Information on rated voltage, current draw, and wire size for power cables.
Notes on fuel pickup, filter installation, and solenoid valve placement.
Considerations for exhaust temperature, water prevention, and hull isolation.
Details on the 12-month warranty, measures for defects, and claim procedures.
Cases where the warranty is not valid, such as unauthorized modifications or improper use.
Exclusions for indirect damages, wear and tear, and specific component limits.
Description of the Wallas Nautic 40D as a marine diesel furnace for recreational use.
Key technical specifications for the Wallas 40D furnace, including fuel, voltage, capacity.
List of all items included in the Wallas 40D furnace package.
Instructions for attaching control panels to the wall, including flush mounting.
Minimum clearance needed under the furnace for maintenance and installation.
Details on exhaust pipe length limits, turns, and through-hull fitting placement.
Guidance on securing the exhaust gas pipe with a hose clamp and overlap.
How to attach blow and suction duct systems using hose clamps.
Wiring details for solenoid valve/hourmeter and control panel connections.
Method for routing exhaust pipe when nipple is over 12" above hull point.
Installation method for exhaust pipe when nipple is less than 12" above hull point.
Recommendation to cover the exhaust pipe with fiberglass insulating sock.
Recommendations for furnace placement relative to the fuel tank level.
Details on warm-air duct connections, length limits, and outlet vent regulation.
Explanation of inlet air for the furnace and its connection to two 3-inch ducts.
Guidance on fresh air and return air duct placement and length.
Warning against installing the furnace in areas with potential gasoline fumes.
Steps for starting and operating the furnace in HEAT mode.
Instructions for operating the furnace in VENT mode for air circulation.
Procedure for switching off the furnace and its cooling cycle.
Diagram and labels for the basic control panel components.
Recommendation to service according to general Wallas equipment guidelines.
How indicator lights show system faults and how to reset them.
Table detailing error states and corresponding indicator light blinks.
Instructions for connecting an external thermostat to the #3004 control panel.
How the thermostat adjusts furnace power between minimum and set power.
Diagram showing external thermostat connections to the control panel.
Diagram illustrating a typical Wallas Nautic 40D installation.
Diagram showing installation with a defroster boost fan.
Important notes regarding fuel tank height, makeup air, and power lead gauge.
Description of polyethylene fuel line kits and tank adapter kits.
Step-by-step guide for assembling the three-part compression fuel line fitting.
Note on ABYC and NMMA rules for fire-rated fuel lines in vessel applications.
Checklist items for choosing the device place and ensuring air supply.
Information on rated voltage, current draw, and wire size for power cables.
Notes on fuel pickup, filter installation, and solenoid valve placement.
Considerations for exhaust temperature, water prevention, and hull isolation.
Details on the 12-month warranty, measures for defects, and claim procedures.
Cases where the warranty is not valid, such as unauthorized modifications or improper use.
Exclusions for indirect damages, wear and tear, and specific component limits.
The Wallas Nautic 40D is a marine diesel furnace designed for recreational use, providing heating and ventilation for boats. It operates without an open flame, extracting combustion air from the installation space and blowing exhaust gases overboard, which helps replenish cabin air with drier, oxygen-rich air from outside. The heat generated from burning fuel is transferred to air circulating through the air ducts via a heat exchanger.
The Nautic 40D serves as a marine diesel furnace, offering adjustable heating power via a rheostat. It can also function as a ventilator, circulating air without heating to keep the boat fresh in warm weather. The furnace is suitable for boats ranging from 30 to 42 feet. Control panel options include a Basic Control Panel with indicator lamps or a Digital Info Control Panel. The unit is constructed entirely from marine-grade materials.
Fuel: Diesel #1, #2, kerosene, JP4, Klean Heat Operating voltage: 12 V DC Fuel consumption: 0.03 – 0.11 US gph Heating capacity: 1.3 – 4 kW (4,000 – 14,000 btu) Heating air volume: 132 cfm Ventilation air volume: 85 cfm Power consumption: 1.8 - 4.4 A running, 8 A for about 6 min at ignition. Dimensions: 15¼" x 12⅛" x 5½" Weight: Approx. 22 lbs Maximum permitted length of exhaust hose: 13' (Ø 28 mm) Maximum permitted length of fuel hose: 26' Maximum permitted length of warm air duct: 26' x 3" ID Maximum permitted length of return air duct: 7' x 3" ID Minimum area of the combustion air opening: 16 square inches Applicable exhaust through hull fittings: 3468, 2467 and 2460+2069 Accessories: 3004 Basic Control Panel, 3005 Info Control Panel
Mounting: The furnace can be mounted on a bulkhead or under the deck, ideally in a vertical position when the boat is on an even keel. While it can withstand temporary tilting, continuous operation at an angle may affect optimal burner performance. A minimum of 8 inches of space under the furnace is required for maintenance. To prevent galvanic corrosion, the furnace should be isolated from the boat's metal framework. The furnace attaches to a mounting bracket, which can be secured to a dampening plate or directly to a vertical wall/bulkhead. The heat outlets can point to either the right or left side relative to the bracket.
Control Panel: Control panels are wall-mounted. The 3005 Info Panel requires its bezel for the thermostatic feature to function. The standard control panel harness is 20ft, with a 33ft extension available.
Exhaust System: The maximum permissible exhaust gas pipe length is 13ft. Runs exceeding 8ft should not have more than 360 degrees of turns, and turns should have a long radius. The exhaust through-hull fitting can be installed in the hull, transom, or deck. For deck fittings where heavy water is expected, a closeable deck fitting (2460) with an extension (2069) is recommended. For heeling sailboats, the through-hull fitting should be installed as far aft as possible, preferably at the stern, with a recommended distance of at least 12 inches from the water surface. Exhaust pipes and fittings must be well-insulated and installed away from flammable materials, allowing free airflow. If the exhaust nipple is less than 12" above the through-hull point, or if "bellies" in the run are unavoidable, a loop should be incorporated into the exhaust pipe to prevent water entry. The exhaust pipe should be covered with a fiberglass insulating sock.
Fuel System: The maximum permissible fuel line length is 26ft, with 13ft supplied. A Wallas fuel filter must always be included. The furnace should be placed 15 to 24 inches higher than the average fuel level in the tank, as the fuel pump is adjusted for this height. If the fuel level is more than 15 inches above or 60 inches below the furnace, the pump may need adjustment. A solenoid valve must be installed near the fuel tank if the fuel surface is above the furnace. Fuel lines are connected using a three-part compression fitting, ensuring clean and square cuts, proper assembly of the nut, acorn, and ferrule, and firm tightening for a sealed fit. ABYC and NMMA rules may require fire-rated fuel lines in new vessel applications.
Air Ducting (Warm Air): The furnace has two 3-inch (75mm) blower connections. To ensure sufficient airflow, heating air must be divided into at least three outlet vents. The maximum length for one branch of the warm air duct is 26ft. Minimum diameter for warm air ducts is 3" to prevent excessive back pressure. Outlet vents are equipped with air valves to regulate flow; the valve should be removed from the vent leading to the area needing the most heat. A booster fan (P/N 3415) is recommended for excessively long ducts. Ducts over 3ft long passing through unheated spaces should be insulated, and all connections secured with hose clamps.
Air Ducting (Inlet Air): The Nautic 40D takes inlet air through two 3-inch (75mm) air ducts. One duct extracts fresh air from outside, and the other extracts return air from inside the boat. Protective grilles without throttle valves are attached to the ends of the suction pipes. The outdoor air opening needs appropriate weather protection. The furnace must not be installed where gasoline fumes may be present. The maximum length for one branch of the suction air duct is 8ft, with a minimum diameter of 3" to prevent excessive pressure drop. All inlet duct connections should be secured with hose clamps.
Basic Control Panel Operation (3004):
External Thermostat (with 3004 control panel): An external thermostat can be connected to the control panel cable (pin 7 = grey wire). It should have closing contacts that close when more heat is required. The thermostat adjusts the furnace between minimum power and the user-determined power setting (via the power knob). It does not switch the furnace on or off. Turning the power knob to zero defeats the thermostat function. Higher power knob settings make thermostatic control more aggressive, while lower settings make it more moderate.
Servicing: Technical parts should be serviced according to Wallas general servicing recommendations. The furnace's electronics include safety functions that switch it off in case of an error.
Fault Indication (Basic Control Panel): Indicator lights show the cause of a system fault. To reset, disconnect power from the furnace. The cause of the fault must be examined and repaired before restarting.
For the #3005 Info Control Panel, refer to its specific user manual.
Warranty: Wallas Marin Oy provides a 12-month warranty for defects in raw material or manufacture. The warranty requires written notification of defects, a valid receipt, and specific information about the problem, installation, product type, and serial number. Warranty service is performed at the place of purchase or an authorized repair shop, not outdoors or on a boat. The warranty does not cover costs for removal or damage from incorrect packing. It is void if non-approved components are used, instructions are not followed, storage/transport is inappropriate, problems result from accidents/force majeure, normal wear and tear (e.g., fan motors have a natural wear limit of 1500 hours), improper handling, unsuitable fuel, low/excess voltage, dirt/water damage, or if the device has been opened without importer permission. Repairs do not renew or alter the original warranty period. Indirect damages are not covered. The warranty applies only to boat products installed in boats and cottage products installed in cottages, not vehicles or other areas. A buyer register is maintained for service communication. The warranty does not limit consumer protection rights, provided maintenance and safety instructions have been followed.
General| Brand | wallas |
|---|---|
| Model | Nautic 40D |
| Category | Marine Equipment |
| Language | English |
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