Proheat X45–School Bus - Manual (Page 43)

Select Your Fuel Pick-up Installation Option
Option A: Fuel pick-up to be installed in an existing 1 ⁄
4
”or 1 ⁄
2
” NPT port
in fuel tank.
Option B: Fuel pick-up to be installed in an existing blank fuel sender
cover plate.
Option C: Fuel pick-up to be installed in a hole drilled into the
fuel tank.
You Choose
☞
FUEL SYSTEM
GENERAL CONSIDERATIONS
• Use a dedicated 1/4" ID fuel line between the fuel tank and heater meeting
SAE 30R9. (Fuel line length not to exceed 50' with a maximum rise of 10'.)
Ensure fuel lines are routed away from all heat sources, well secured and will
not abrade.
• Ensure clamps are secure at fuel pump and fuel pick-up.
• Ensure the proper fuel line clamps with uniform 360° compression are used.
• Use of a fuel filter is not recommended. All models have a built in fuel filter
at the fuel inlet fitting on the heater.
Figure 3-30 Do not kink or pinch fuel
line when routing lines.
Figure 3-31 Fuel Supply Height Requirement
50' MAXIMUM LENGTH OF FUEL LINE
10' MAXIMUM RISE
CAUTION
DO NOT use fuel lines and pick-up
tubes less than 1/4" ID or greater
than 3/8" ID. Failure to use the
correct line size may result in
heater malfunction.
3-22 PROHEAT INSTALLATION & SERVICE
3.6
3.6.1