Architect and Engineering Manual
4
FEATURES & BENEFITS
EXCELLENT EFFICIENCY
AND DEHUMIDIFICATION
GE Appliances recognizes the importance of energy
efficiency and dehumidification in an air conditioning
system and uses EER (Energy Efficiency Rating) as the
required means of reporting the relative cooling efficiency
of the unit.
The measurement of the efficiency of the heat pump
output, when compared to electric resistance heat,
is called the Coefficient of Performance (COP). The
GE Zoneline® single packaged vertical heat pump has
outstanding COP ratings. This number provides a basis
not only for comparing the heat pump output to electric
resistance heat, but also the ability to directly compare
heat pumps within the same range of capacity to
one another.
PERMANENTLY LUBRICATED FAN MOTORS
The Zoneline Vertical chassis 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.
CENTRAL DESK CONTROL (CDC)
AZ95 units are compatible with simple on/off two-wire
Central Desk Control (CDC) systems. The unit utilizes a
3-pin port to interface such a system. This requires the
separate purchase of the RAKCDC connector accessory.
The most common installation of this type of system is a
switch mounted at the registration desk; and, upon guest
check-in, the 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, this feature is usually used with a
normally open switch 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 door open.
IMPORTANT CDC NOTES:
1. The unit requires the use of a normally open switch.
Closing the circuit shuts off the system.
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 Zoneline
Vertical 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 1,500 Ft.
#16 2,000 Ft.
5. Freeze Sentinel and Heat Sentinel still remain
operational when the unit is connected to a
CDC system.
CDC PORT LOCATION
RAKCDC
EXAMPLE OF COMMON BUSING
NOT PERMITTED
TYPICAL WIRING
(Wiring from RAKCDC connector to
fi eld devices is fi eld supplied)
RAKCDC
CONNECTOR
(sold separately)
FIELD SUPPLIED
CDC SWITCH
INCORRECT COMMON BUSING
NORMALLY OPEN SWITCH=
UNIT OPERATIONAL
POWER RED
CDC BLUE
NOT USED YELLOW
RAKCDC PORT
CDC Typical Wiring
Preliminary specifications. Subject to change.