Technical Information 9-15
PA-1652 Operator's Manual H3-45 Coach
COOLING SYSTEM
l Extra capacity, Aluminum radiator and
aluminum charge air cooler arranged side by
side.
l Eight 24V speed controlled by ECU electrical
cooling fans.
l Radiator fans: pusher type, 6 high power 24
Volts electrical fans, 12 inches diameter.
l CAC fans: pusher type, 2 high power 24
Volts electrical fans, 12 inches diameter.
l Rubber insulated from the body.
l Expansion & recovery tanks above radiator
and remote mounted.
l System pressure 15 psi.
l Coolant: -Volvo engine: ELC (Extended life
coolant), color red, with No-SCA filter.
l Thermostat: 82 / 92 °C (180 / 198 °F) –
(cracking / fully open).
l Full system capacity 27.5 US gal (104 l).
l Coolant filter without Supplemental Coolant
Additive (SCA).
FUEL SYSTEM
Polyethylene 222 US gallons (840 liters) fuel tank
located in middle of second baggage bay
(heating and a/c section)
l Anti-spill device.
l Two safety filler caps providing filling access
on both sides of the vehicle.
l Pressure relief valve.
l Electric fuel gauge.
l Low level signal at 22 US gallon (83 liters)
l Primary filter 10 microns (standard).
l Primary fuel filter with electrical water
indicator (Volvo D13).
l Fuel Pro filter available as an optional
primary filter.
l Secondary filter 3 to 5 microns.
l Shut-off valve on fuel supply line.
EXHAUST SYSTEM
One all stainless steel exhaust & aftertreatment
system including:
l Catalytic converter to reduce NOx.
l Aftertreatment system made of a DPF
(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.
l Tail pipe diffuser and rain deviation device.
l Exhaust pipe with flexible section.
l Exhaust to rear rooftop left hand corner.
l Diesel exhaust fluid (DEF) tank (60 liters)
and injection system.
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.
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