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WALLAS 40D

 

Operator’s Manual and Installation Guide

 

 

2

Operation 
 

Nautic 40D is a marine diesel furnace with no open flame, intended for recreational use.  
Use as a live aboard product will mean more frequent servicing, not covered by 
warranty. The furnace extracts combustion air from the installation space through a slot 
in its base and blows the exhaust gases overboard. This process forces replenishment of 
damp cabin air with drier, oxygen rich air from outside. As the fuel burns, the released 
heat is transferred to the air circulating in the air ducts via heat exchanger. The furnace 
heating power is fully adjustable by way of a rheostat. The return and fresh makeup air is 
brought to the heat exchanger by way of inlet ducting. Thanks to this suction duct 
capability the furnace can also be installed in a diesel engine room. The furnace can 
also be used as a ventilator, circulating air in the boat without heating through the air 
ducts. This keeps the air fresh in the boat in hot weather. The heating capacity of the 
device is best suited to 30’ – 42’ boats. Control panel options include a Basic Control 
Panel with indicator lamps or a Digital Info Control Panel. The furnace is made entirely of 
marine grade materials. 

 
Table 1: Technical details of furnace 40D. 
 

TECHNICAL DETAILS 

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 

 

15

1/4” 

x 12

1/8”

 x 5

1/2”

 

Weight 

 

Approx. 22 lbs 

Maximum permitted length of exhaust hose 

 

13’ (Ø 28 mm) See page 3 

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

 

 

Package contents 

Furnace 

1 pc Accessory Bag 

4 m Power cord 

4 m Fuel hose with filter and adapter kit 

1 pc Mounting bracket 

1 pc Damper kit 

 

Contents of the accessory bag: 

6 pcs Mounting bracket screw 5 x 16 

2 pcs Mounting bolt M8 x 120 

2 pcs Corrugated base plate M8 

1 pc Hose clamp 20/32 

4 pcs Air duct fixing clamp 60/80 

1 pc Fuse box bag 

 

Summary of Contents for Nautic 40D

Page 1: ...WALLAS 40D Operator s Manual and Installation Guide 1 2010 Two Mac Inc...

Page 2: ...el options include a Basic Control Panel with indicator lamps or a Digital Info Control Panel The furnace is made entirely of marine grade materials Table 1 Technical details of furnace 40D TECHNICAL...

Page 3: ...tantly at an angle The installation must maintain a minimum of 8 inches under the furnace to facilitate maintenance otherwise removal of the unit will be necessary for maintenance To avoid galvanic co...

Page 4: ...wo M8 x 120 locking bolts Figure 6 Attaching the control panel Note either the 3004 or 3005 can be mounted with or without the bezel shown here 3005 panel must have the bezel fitted for thermostat to...

Page 5: ...WALLAS 40D Operator s Manual and Installation Guide 5...

Page 6: ...WALLAS 40D Operator s Manual and Installation Guide 6...

Page 7: ...n order to secure sufficient air flow the heating air must be divided into at least three outlet vents The ducting attaches to two 3 inch 75mm outlet adaptors at the end of the furnace The longest per...

Page 8: ...safety reasons the furnace must not be installed In a place where gasoline fumes might be present The suction air is taken in via two branches of ducting One inlet duct should take in some fresh air...

Page 9: ...e the power switch to the OFF position The furnace cannot be restarted until the cooling fans have stopped and all indicator lamps have gone out Once the indicator lamps have gone out restart the furn...

Page 10: ......

Page 11: ...at When installing please note the thermostat manufacturer s instructions The thermostat will not switch the furnace on or off but will adjust the furnace between minimum power and the user determined...

Page 12: ...WALLAS 40D Operator s Manual and Installation Guide 12 Figure 15 Figure 14...

Page 13: ...mportant 1 Make sure the fuel line end is cut cleanly and squarely 2 Slide the nut on the fuel line with the threads toward the line end 3 Push the acorn over the end of the fuel line 4 Slide the ferr...

Page 14: ...ngine pickup Install a filter in the fuel line Note the need for replacing the fitter periodically Cut the fuel line to a suitable length during installation Ensure that the fuel line joint surfaces a...

Page 15: ...thout the consent of the manufacturer The instructions for installation operation or maintenance have not been followed Storage or transport has been inappropriate A problem has resulted from an accid...

Page 16: ...WALLAS 40D Operator s Manual and Installation Guide 16 June 2 2010...

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