Operating instructions

- use 1/4" or 1/2" spare port on fuel tank (if available) and install
fuel standpipe securely in fuel tank, use pipe thread sealant on
all pipe threads.
3. Route and secure fuel lines from heater to fuel tank. Route
according to applicable regulations.
Use grommets to protect fuel lines whenever routed through holes.
4. Connect fuel lines to fuel standpipe and heater using 1/4" (6 mm)
I.D. fuel line. Steel braided fuel lines are recommended for
installations where the heater is located in the engine
compartment.
Fig. 406: Fuel Line Parameters
A = Suction height 6’6" (2,0 m)
A+B = Suction length and height not to exceed 33’ (10 m)
4.7.3 Fuel Filter
The heater must be equipped with a fuel filter. Fuel filters require
changing at least annually and in cases of dirty fuel more often.
The fuel filter assembly should be mounted near the heater.
After installation, before the heater is fired for the first time, the fuel
system and filter will require priming. In most cases, this will be
achieved by turning on the heater and allowing it to self prime.
In some cases the fuel filter may require filling with CLEAN diesel fuel
before installation to assist system priming.
NOTE
Change the fuel filter at
least annually.
CAUTION
To prevent fuel nozzle
failure, always use CLEAN
fuel from a known CLEAN
source for priming fuel
systems and filters.
CAUTION
Fuel line must be secured
every 12" and kept away
from hot exhaust and
moving parts (drive shaft,
wheels, etc.).
4 Installation Thermo 230/300
408