20
If for some reason the fuel pump seal is compromised, it is advised to install the fuel
pump lower than the heater to avoid leaks and flooding the heater with fuel due to gravity.
Remember to properly bleed the “silent” TH11 fuel pump. If it’s not properly
bled it will be as loud as a standard fuel pump.
To bleed it start the heater and position the fuel pump with its outlet upwards
until there are no air bubbles in the fuel line and only then secure the fuel pump
to its recommended position.
Attach the fuel pump to the flexible rubber clamp (supplied with the heater), to reduce
the transfer of noise to the frame of vehicle or hull of the vessel (see Fig. 24).
Proceed as instructed on Fig.18 and Fig.21 to install the fuel supply lines. Use clamps
to attach the fuel supply lines. Do not tighten the clamps too much in trying to avoid leaks
as clamps break easily if tightened with too much force.
It is preferable to lay the fuel supply line on a straight line and with a small inclination
upwards in the direction of the heater. The fuel supply line should be fastened at equal
distances to prevent sagging, mitigate the effects of vibration and to avoid fractures. Do not
allow the fuel pump and the fuel supply line to come in contact with hot objects. Cut the
fuel supply line using only a sharp knife as per Fig.25. At the locations of cuts, there should
be no narrowing of the flow cross-section of the fuel line, dents or kinks.
