Cooling System; Fuel System; Exhaust System; Heating And Air Conditioning - PREVOST H3-45 2023 Operator's Manual

COOLING SYSTEM

Extra capacity, Aluminum radiator and
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aluminum charge air cooler arranged side by
side.
Eight 24V speed controlled by ECU electrical
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cooling fans.
Radiator fans: pusher type, 6 high power 24
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Volts electrical fans, 12 inches diameter.
CAC fans: pusher type, 2 high power 24
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Volts electrical fans, 12 inches diameter.
Rubber insulated from the body.
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Expansion & recovery tanks above radiator
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and remote mounted.
System pressure 15 psi.
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Coolant: -Volvo engine: ELC (Extended life
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coolant), color red, with No-SCA filter.
Thermostat: 82 / 92 °C (180 / 198 °F) –
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(cracking / fully open).
Full system capacity 27.5 US gal (104 l).
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Coolant filter without Supplemental Coolant
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Additive (SCA).

FUEL SYSTEM

Polyethylene 222 US gallons (840 liters) fuel tank
located in middle of second baggage bay
(heating and a/c section)
Anti-spill device.
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Two safety filler caps providing filling access
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on both sides of the vehicle.
Pressure relief valve.
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Electric fuel gauge.
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Low level signal at 22 US gallon (83 liters)
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Primary filter 10 microns (standard).
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EXHAUST SYSTEM

One all stainless steel exhaust & aftertreatment
system including:

HEATING AND AIR CONDITIONING

A large capacity central HVAC system provides
enough conditioned and filtered air for all climatic
conditions. Fresh air is drawn into the system
from the evaporator compartment on driver's side
of the vehicle. Return air is taken from the middle
of the vehicle. The driver's heater and defogger
are controlled separately from the passenger's
unit. An air mixture selector enables air to be
drawn into the system from outside the vehicle or
recirculated.
Optionally, condensers installed in the overhead
storage compartments provide cool air to the
seated passengers from the overhead registers.
PA-1652 Operator's Manual H3-45 Coach
Technical Information 9-15
Primary fuel filter with electrical water
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indicator (Volvo D13).
Fuel Pro filter available as an optional
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primary filter.
Secondary filter 3 to 5 microns.
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Shut-off valve on fuel supply line.
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Catalytic converter to reduce NOx.
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Aftertreatment system made of a DPF
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(Diesel Particulate Filter), DOC (Diesel
Oxidation Catalyst) and SCR system. Noise
& vibration damped, this ATD is mounted to
the vehicle structure and is accessible
through an exterior access door.
Tail pipe diffuser and rain deviation device.
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Exhaust pipe with flexible section.
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Exhaust to rear rooftop left hand corner.
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Diesel exhaust fluid (DEF) tank (60 liters)
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and injection system.