A
IR
T
OP
5000
5
I
NSTALLATION
5-5
5.5
Combustion Air Supply
WARNING
Due to the risk of carbon monoxide poisoning causing death or serious injury to personnel, never draw combustion air
from inside of the cab, passenger area or cargo area of any vehicle where personnel are likely to be present.
Drawing combustion air from inside of the cab, passenger area or cargo area of any vehicle can create a negative interior
pressure which may allow exhaust gases in the immediate area outside the vehicle to seep in, gradually displacing
oxygen with poisonous carbon monoxide.
One half meter (19.5 in.) of flexible combustion air intake tubing is provided in the installation kit for routing combustion
air into the heater.
1. Secure the combustion air intake tube to the heater with the gear clamp provided.
2. Route the combustion tube to an area where it is protected from splash water and not likely to be clogged by snow,
mud or debris. Always route intake tube in a slight downward pitch away from the heater to allow moisture to drain.
If dips or bends cannot be avoided, drill a 5 mm (3/16 in.) hole at the lowest point of each bend or dip to allow
drainage of moisture (see figure 5-5).
3. Bend inlet end of tube in a downward direction (see figure 5-5). Do not point into the direction of travel.
4. Secure combustion air intake tube to the vehicle with nylon wire ties where possible.
NEVER ROUTE COMBUSTION TUBE IN THE DIRECTION OF TRAVEL.
ATTENTION!
Installations where longer lengths of combustion air tubing are required, do not exceed 2 meters (6 feet) in length.
Minimum bending radius is 45 mm (1-3/4 in.). Bends in the combustion air intake tubing must not exceed 270° total.
5.6
Fuel System
5.6.1
General Information
The fuel metering pump, fuel line and fuel standpipe together are integral to the heating systems reliability and
performance. Install in accordance with the instructions detailed within this section.
5.6.2
Fuel System Limits
Maximum suction height (A) = 1 m (39 in.)
Maximum suction length (A + B) = 2 m (78 in.)
Maximum delivery length (C + D) = 6 m (234 in.)
Maximum delivery height (D) = 3 m (117 in.)
Fig. 5-6:
Fuel System Limits
NOTE: The fuel pump must not be mounted lower than
500 mm (20 in.) below the top of the fuel tank.