GE Zoneline Data Manual Download Page 9

Page: 9 / 20

geappliances.com

Features and Benefits

to operate this low because of the larger outdoor coil area
and because central system heat pumps have a reverse cycle
defrost mode that melts accumulated frost off the outdoor coil.
Other vertical packaged terminal heat pump units terminate
heat pump operation and switch to more expensive resistance
heat at outdoor temperatures in the 40°F. to 45°F. range. They
must terminate heat pump operation before a frost build-up
occurs on the outdoor coil since they have no way of eliminating
the frost.
GE offers a reverse cycle defrost system, like the central systems,
on all Zoneline Packaged Terminal Heat Pumps. This provides the
owners with the savings realized by the ability to operate in heat
pump mode to lower outdoor temperatures. GE has adapted the
reverse cycle heat pump defrost system to the ZVAC for greater
savings in heat pump mode.
The ZVAC will provide heat pump savings down to a 25°F.
outdoor temperature. At temperatures below 25°F., the unit
will automatically switch to electric heat. When the outdoor
temperature rises to 32°F., the unit will automatically switch
back to heat pump operation. As long as the heat pump output
is able to maintain the room temperature within 2°F. of the
thermostat set point, the unit will run in heat pump mode down
to 25°F. outdoor air temperature. The resistance heater and the
heat pump do not operate simultaneously.
If the outdoor temperature is above 25°F. and if the room
temperature falls more than 2°F. below the set point, the
thermostat automatically switches the unit to resistance heat.
If frost develops on the outdoor coil at temperatures above 25°F.,
the unit initiates the reverse cycle defrost operation to warm the
outdoor coil and allow the unit to resume heat pump operation.
Prior to initiating the defrost sequence, the electric heaters will
be energized to bring the room to the thermostat set point.
Immediately after the defrost is completed, the electric heaters
are energized to bring the room back to room temperature. The
defrost sequence is terminated when the outdoor coil reaches
68°F. or when nine minutes has elapsed.

Concealed Manual Vent Control

Open ventilation doors on GE Vertical Zoneline

Packaged

Terminal Air Conditioners and Heat Pumps allow outside air to
enter the room through a screen-covered opening in the weather
barrier that separates the indoor and outdoor sections of the
unit. For each cfm of air to enter the room, an equal amount of
air must be removed through exhaust fans in the bathroom or
roof tops. Outside ambient air entering the room through this
screened vent opening is not conditioned. This unconditioned
air becomes mixed with the conditioned air that is circulated
by the ZVAC indoor fan. This air mixture generates an additional
heat load/heat loss that causes the unit to run longer and may
translate into higher operating costs.
A concealed lever located behind the front cover of the ZVAC
is used to open and close the vent door.

Zoneline vent openings

are not intended to be the source of make-up air for building

ventilation systems due to the additional heating or cooling

loads generated.

Ventilation CFM at various ESP points:

Warranty (including both parts and labor)

GE has provided the most comprehensive warranty available,
without additional charge, on a vertical packaged terminal unit.
The entire warranty covering the ZVAC unit is printed in the back
of this manual but the highlights are:

• Limited One-Year Warranty - covering any part that fails

as a result of a defect in materials or workmanship - parts,

labor, and on-site service free of charge.

• Limited Additional Four-Year Warranty - covering any part

of the sealed refrigerating system (Compressor, condenser,

evaporator, and all connecting tubing) that fails due to

a defect in materials or workmanship - parts, labor, and

on-site service free of charge.

• Limited Parts Warranty for 2nd - 5th Year - covering fan

motors, switches, heater, heater protectors, compressor

overload, solenoids, circuit boards, auxiliary controls,

thermistors, frost controls, capacitors and resistors. This

is a limited warranty and does not include labor or cartage.

System Essential Components
and Installation

Each Zoneline Vertical Packaged Terminal Air Conditioner
or heat pump requires an installation platform, wall plenum,
exterior grille, chassis including case, power connection kit,
remote thermostat, filter and a return air grille, ductwork
and supply registers.
The installation platform, ductwork and supply registers are field
supplied. Each of the other components is ordered separately.
The wall plenum, exterior grille and power connection kit are
specifically designed to interface with the GE ZVAC unit and
must be purchased from the same source as the unit.
The remote thermostat and the return air grille are offered as
accessories by GE, but may be purchased from a source other
than GE. If a non-GE thermostat or return air grille is used, they
must have the minimum requirements to work properly with
the unit. The filter is a standard 20" x 20" x 1" filter available
where air conditioner filters are sold. The room temperature
sensor is an optional GE accessory available from the same
source as the unit.