7
geappliances.com
Permanently Lubricated Fan Motors
The ZVAC has two permanently lubricated, totally enclosed
fan motors. The motors are permanently lubricated to reduce
maintenance and totally enclosed to keep dirt and water out
of the motor windings.
Standard Size Air Filter
A number of filters, providing varying degrees of filtering
efficiency are available on the market today. GE has designed
the ZVAC to accommodate a number of filter placement
options. All of the options designed for the unit use a standard
size 20" x 20" x 1" filter. Since the filter is field supplied, GE has
allowed the owner or property manager to decide which type
of filter to use with the unit.
A different size filter may also be used in a field supplied frame
installed in a return air grille mounted in the closet enclosure
door or wall. If a different size filter is used, it must be at least
20" x 20" x 1" and provide no more restriction to air flow than
the standard 20" x 20" x 1" filter.
The unit must not be operated without a filter in place,
even during construction.
GE provides three filter placement options for design and
installation flexibility. A filter bracket is provided in the front
panel of the ZVAC case, which allows the use of a louvered
closet door. The bracket is mounted to allow the filter to be
inserted from the top of the bracket rather than sliding in
from the side, where the enclosure wall may interfere with
filter removal.
An access panel, accessory model number RAVRG1, for the
closet enclosure is the second filter placement option. The
access panel requires a 28" wide by 48" high cutout in the
unit closet enclosure wall and provides access to the unit for
servicing and removal. The access panel should be located in
the wall such that the centerline of the access panel matches
the centerline of the case to allow for removal of the chassis. The
bottom of the access panel should be at least 1" below the unit
support platform to allow for easy removal of the ZVAC unit.
The third filter placement option provided by GE is incorporated
in a return air grille, accessory model number RAVRG2,
designed to be mounted in a flat closet access door. The
door must have a minimum clear opening of 24" to allow for
installation and removal of the unit. GE recommends a 28"
wide door. A 20 3/8" wide by 20 3/8" high cutout is required in
the door to accommodate the grille and filter bracket.
Only one filter is to be used in the installation. Multiple filters
will reduce the air flow and affect unit performance. A clean
filter is essential to efficient unit operation. The filter should
be checked at least every 30 days and replaced if dirty.
Central Desk Control
Terminals are provided on the unit to allow a Central Desk
Control system to be interfaced with the unit. The most common
installation of this type of system is a switch mounted at the
registration desk; and, upon guest check-in, a switch is activated
to allow the air conditioner to operate.
Likewise, when the guest checks out, the device is switched
to the “OFF” setting so the unit will not operate when the room
is not rented. In some resort areas, devices are connected to
sliding glass doors, and opening the doors causes a contact to
close, turning the air conditioner off. This prevents the unit from
running and wasting energy with the sliding glass open.
Important CDC Notes:
1) The unit requires the use of a normally open switch.
Closing the circuit interrupts power to the unit.
2) Both wires comprising the circuit must connect to the
CDC terminals on the unit and to the controlling switch.
Do not use a common buss (at the unit or at the switch
panel) in the wiring.
3) A 24-volt transformer is contained within the ZVAC unit.
No external voltage may be applied to the unit through
the CDC terminals.
4) Minimum wire size for CDC wiring:
Wire Size # AWG
Maximum Allowable Length
#22
600 Ft.
#20
900 Ft.
#18
1500 Ft.
#16
2000 Ft.
Occupancy Sensor Interface
The ZVAC is equipped with a terminal connection to allow it
to interface with a motion sensor and a door sensor to allow
a room occupancy detection system to be connected to the
unit. Various companies market and install room occupancy
systems as a means of reducing the operating cost of
the unit. GE does not market or install these systems but
provides the interface terminals on the unit and logic within
the microprocessor controls to permit these systems to be
installed at a minimum cost to the property owner.
HIGH and LOW Fan Speeds
If the ZVAC is connected to a wall thermostat without the ability
to provide two fan speeds, the fan speed will be determined by
connecting the wire controlling the fan to either the Low Speed
Fan terminal or the High Speed Fan terminal on the unit.
Features and Benefits
