Haier AW07LC2VHA Technical Overview page 52

Slim Duct Unit Technical Overview
The Slim Duct Indoor Unit will act as evaporator coils during
cooling mode and condenser coils during heating mode.
This unit can operate with a motorized supply air louver or
it can have a LIMITED amount of ducting added to the unit's
return and supply air duct connection flanges. The return air
ducting can be connected to the end of the cabinet or the
bottom blank off plate can be removed for bottom return
configuration.
DIP Switches on the unit's circuit board configure the fan
power to match the ducting configuration.
The Slim Duct cabinet is insulated so that it can be installed
in unconditioned air. The unit is well suited for mounting in
soffits, attics, and garages.
These units have a built in condensate pump with an
associated condensate level switch. The condensate pump
is capable of lifting water out of the indoor unit. If high water
lift is needed, the water from the cassette pump should be
pumped into a field supplied condensate pump with high lift
power.
Slim Duct units are controlled by a wired
controller only.
Basic Duct Configurations
Here are the typical duct configurations that can be used with
the unit.
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Slim Duct
Evaporator
Coil
Duct work Installation
Roof Installation
Ceiling
Air supply
Long Duct
Air return duct
Air return blind
Use rivet to connect the air
return duct on the air return inlet
of the indoor unit, then connect
the other end with the air return
TECHNICAL OVERVIEW
Pipe
Sen
sor
6
1
Gravity
Drain Ports
8
Return Air
Temperature
2
Sensor
Blower
Motor
Evaporator Coil Return Air
1 5 Temperature Sensor
Blower Motor
2 6 Pipe Sensor
Condensate Pump
3 Terminal Block 7
4 Control Board 8
Gravity Drain Ports
Roof
Air outlet grill
Air supply
Unit Return air box
Return air
Suspending hook
Air out duct
Drain pipe
Transition duct
Air distribution
Soft
connection
or static Transition
Indoor unit
box duct
Air return blind Air return duct
heat
gluey nail
preservation cotton tinfoil gluey nail cap
7
Condensate Pump
4
Control Board
5 3
Terminal Block
Return air box
Unit
Return air
Tie-in of air
Distribution
Rounded
duct
Tie-in of air
distribution
Air distribution
Indoor unit
Rivet
adhesive tape