Dometic EHCEQ7* Air Conditioner User Manual


 
Dometic auxiliary remote truck air
conditioning systems are designed
to cool or heat the cab and sleeper
without running the truck’s diesel engine,
saving fuel and preserving the environment.
The systems run on 120VAC electricity, which
is supplied by a shorepower connection,
an auxiliary power unit (APU) or a battery-
based system. Models are available in 7,000
BTU/Hr, 10,000 BTU/Hr and 14,000 BTU/Hr
capacities. Electrical strip heating options
include 1, 1.5, 2, 2.5, 3 and 4 KW, and can be
specified as either single or two-stage. It can
also be integrated with a diesel fuel heater,
using the same Dometic Qt Control/Display.
The system consists of separate inside
(evaporator) and outside (condenser)
sections connected by flexible refrigerant
lines. Designed for the harsh trucking
environment, the units are vibration and
corrosion resistant, and are backed by more
than 40 years of mobile air conditioning
experience. A digital thermostat controls
the system and is ordered separately.
Government-approved environmentally
friendly R-417A refrigerant (HFC) is used.
The ACC condenser section has a highly
efficient, lightweight, compact all-aluminum
condenser and a 24VDC cooling fan within
a powder-coated aluminum housing. To
save space and reduce noise, it is mounted
outside, typically under the cab.
The EHC
inside evaporator unit consists of a
compressor, evaporator coil, electric
heat strip and a blower in an aluminum
enclosure with a deep condensate
drain pan. A cooling only unit (no heat
strip) is also available. This compact unit is
designed to be installed under a bunk, or in
the bottom of a closet or cabinet. An efficient
rotary compressor was selected for its
quiet operation, and the enclosure further
minimizes noise in the sleeper. A built-in
electric heat strip provides heat during cold
weather. The strong squirrel-cage blower
moves the cooled or heated air to one or
more discharge grilles through insulated
flexible or fixed ducts.
The condenser, evaporator and lineset are
all charged at the factory with the proper
amount of refrigerant. Reuseable quick-
connect fittings are specified so that no
special refrigerant handling equipment is
required. Wire harnesses are waterproof and
polarized for each plug-and-play installation.
A sleek and attractive cover for the 7,000
BTU Day Cab interior system is available
to provide protection to the unit while
muffling sound for a more comfortable
cab environment. The Dometic Qt Control/
Display can be mounted directly onto the
top of the cover, allowing easy access for
the driver.
Key Benefits
ACC OUTSIDE CONDENSER UNIT
Rugged polished stainless steel
enclosure
Designed for corrosion and
vibration resistance
24VDC cooling fan
EHC INSIDE EVAPORATOR UNIT
Compact unit
Quiet, powerful squirrel-cage blower
Rotary compressor inside sound shield
Built-in electric heat strip – optional
diesel-fired heater
Digital thermostat control
(sold separately)
Deep drain pan for condensate removal
Polarized plug-and-play waterproof
electrical connections
Refrigerant connections are reuseable
quick-connect devices
Auxiliary Remote Truck
Air Conditioning & Heating Systems
ID: 2317
10,000 BTU/hr
System shown
7,000 BTU
Model and Cover
P/N 5047656