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There are two basic types of auxiliary air systems:
• Self-contained “package” units
• Split systems
The self-contained unit is designed to be wholly mounted inside
the truck, usually under a berth or seat or inside a side storage
locker. All of the air conditioning components, including the com-
pressor, condenser, evaporator, blower and power supply, are
mounted on a single low-profile chassis with an aluminum cover.
The system’s closed refrigerant loop is precharged and sealed at
the factory. Inside air is pulled across the evaporator coil, and
cooled air is blown through a flexible duct to a discharge grill for
discharge into the living area. Hot air is discharged from the con-
denser through cutouts in the floorboard.
Dometic’s patented split systems consist of two separate modules. The outside unit contains the condenser and
cooling fan. It can be bolted horizontally to the underside or vertically to the back of the sleeper. The inside unit
contains the compressor, evaporator, blower, power-logic box and other associated components.The compressor is
covered by a sheet-metal cover. The inside unit is mounted
under a berth or seat or in a side storage locker. The two
units are connected by reusable precharged quick-connect
refrigerant linesets. The system is designed so that both units
automatically charge to the correct refrigerant pressure as
soon as the linesets are connected. No special tools are
required.
Each approach offers advantages and disadvantages.A self-con-
tained unit is simpler to install and maintain, since it does not
have any external refrigerant lines. It is also less expensive
than a split system of the same BTU capacity. On the other
hand, it takes more interior space, and it requires cutting
holes in the floor for air to flow to and from the condenser. A
split system, on the other hand, has more installation flexibility
and uses less interior space. It also is quieter, since the con-
denser fan is located outside the truck.
Both types of air conditioning systems are available with a
selection of built-in electrical heat modules. The heat is blown
through the same ducts and grills and controlled by the same
thermostat. They can also be used in conjunction with a diesel-
fired heater if desired, under control of the same thermostat.
Heating Capacity Application*
1.0 KW 48 in. sleeper
2.0 KW 60 in. sleeper
2.5 KW 72 in. sleeper
4.0 KW two stage 60 or 72 in. sleeper in cold climates
Self-contained unit installed under bunk.
*Under normal conditions.
Whichever type of system you
select, it will come with ducts,
grills, condensate drains, thermo-
stat controls and electrical wiring.
Split Systems
Model Cool Capacity
(BTU)
Heat Capacity Control Height
(in.)
Width
(in.)
Length
(in.)
Weight
(lb.)
Cool
Amps
Heat
Amps
Refrigerant
Internal Unit - Evaporator/Heater/Compressor
ECEQ7 7,000 Cooling only Smart digital 11.75 10.25 19.25 53 7.3 n/a R417a
EHCEQ7 7,000 1 KW Smart digital 11.75 10.25 19.25 53 7.3 8.2 R417a
ECEQ10 10,000 Cooling only Smart digital 11.63 11.12 20.19 60 11.8 n/a R417a
EHCEQ10 10,000 7500 BTU Smart digital 11.63 11.12 20.19 60 11.8 1.0 R417a
EHCEQ10 10,000 1.5 KW Smart digital 11.63 11.12 20.19 62 11.8 13 R417a
EHCEQ10 10,000 2 KW Smart digital 11.63 11.12 20.19 62 11.8 17 R417a
ECEQ14 14,000 Cooling only Smart digital 11.69 13 22 64 14.5 n/a R417a
EHCEQ14 14,000 1.5KW Smart digital 11.69 13 22 65 14.5 13 R417a
EHCEQ14 14,000 2.5 KW Smart digital 11.69 13 22 65 14.5 21 R417a
EHCEQ14 14,000 2.5 KW, 2-stage Smart digital 11.69 13 22 65 14.5 11.4 + 10.4 R417a
EHCEQ14 14,000 4 KW, 2-stage Smart digital 11.69 13 22 65 14.5 23.2 + 12.1 R417a
External Unit - Condenser
ACCD7 7,000 n/a n/a 6.125 11.3125 21.875 10 n/a n/a R417a
ACCE10 10,000 n/a n/a 6.125 12.5 24.5 12 n/a n/a R417a
ACCE14 14,000 n/a n/a 6.625 12.5 24.5 13 n/a n/a R417a
Self-Contained Units
ASCF7 7,000 Cooling only Mechanical 12.5 15.25 21.5 62 8.5 n/a R22
ASCEQ7 7,000 Cooling only Smart digital 11.94 17.75 24 70 8.9 n/a R417a
ASCEQ7 7,000 7500 BTU
Espar ready
Smart digital 11.94 17.75 24 70 8.9 1.8 R417a
ASCEQ7 7,000 1 KW Smart digital 11.94 17.75 24 71 8.9 9.5 R417a
ASCEQ7 7,000 1.5 KW Smart digital 11.94 17.75 24 71 8.9 13.4 R417a
ASCDQ10 10,000 Cooling only Smart digital 12.5 20.87 28.25 91 12.9 n/a R22
ASCDQ10 10,000 1.5 KW Smart digital 12.5 20.87 28.25 92 12.9 13.9 R22
ASCDQ10 10,000 2 KW Smart digital 12.5 20.87 28.25 92 12.9 18.2 R22
ASCDQ14 14,000 2 KW Smart digital 12.5 20.87 31.5 104 15.7 19 R22
ASCDQ14 14,000 2.5 KW Smart digital 12.5 20.87 31.5 104 15.7 23 R22
Split system inside unit under bunk.
Split system external condenser.