Toyotomi Laser 73 Installation And Operation Instructions Manual page 25

SECTION J:
FUELING
WARNING:
¡ Large Capacity External Tank
Tank must be purchased separately and installed by a qualified fuel supply technician.
NOTE: External tank installation must comply with locally applicable codes. Check with local building
officials.
The following instructions should be followed for installation of a large capacity, gravity-fed external fuel tank.
¡Installation height of tank's fuel outlet should be at least 40 cm above floor surface upon which
heater rests.
¡To avoid excess fuel pressure to heater, top of fuel tank should be no more than 2.5 m above floor
surface upon which heater rests.
¡Fuel tank should be located at least 2 m away from all heat sources.
¡5/16" OD copper tubing should be used for fuel line.
¡To prevent air locks in fuel line, fuel line should be smooth with no U-shaped or sharp bends.
¡Use of fuel filter in fuel line adjacent to tank is recommended, shut-off valves should also be
installed on the fuel line and connected to the tank as shown below.
NOTE: An additional shut-off valve installed next to the exterior wall will minimize fuel to be drained should
heater have to be disconnected. If the valve is on interior side, a fusible link type is recommended.
1. Be sure all external tanks have an operating vent.
2. The use of a water trap filter is recommended. A model with a drain plug or petcock is preferred.
3. Be sure to observe the maximum and minimum tank heights as specified.
NOTE: If the maximum height from the top of the fuel tank to the bottom of the heater exceeds 2.5 m, a fuel
pressure reducing valve, preset at 2.5 psi, is required .
Laser 73
Use only clear Paraffin. NEVER USE GASOLINE.
Use of gasoline can lead to uncontrollable flames resulting in destructive fire.
Laser 73 FUEL SYSTEM OPTIONS
EXTERNAL TANK INSTALLATION
2.5 m maximum
Fire safety valve
(recommended)
Valve
(recommended)
Fuel filter
40 cm minimum
Loop
3/8in.OD copper tubing
Outdoor fuel tank
Tank vent
Shut-off valve
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