Architect and Engineering Manual

24
Preliminary specifications are subject to change
SPECIFICATIONS
The following are suggested specifications for the AZ95
Series single packaged vertical units:
The contractor shall furnish single packaged vertical units
of the sizes and capacities shown on the schedule or in
the specifications. The units shall be located as shown
on the drawings and each shall consist of a chassis,
appropriately sized wall plenum, outdoor grille, remote
wall thermostat, drain platform, and closet access panel
or door.
Units shall be listed by UL and shall be GE Appliances
Vertical Zoneline® models or equal. Unit dimensions shall
not exceed 23-5/8"W x 24-1/8"L x 31-7/8" H.
CHASSIS
The Zoneline UltimateV10 Vertical chassis shall be the
standard product of the manufacturer and shall be
shipped in protective cartons to prevent damage. Cartons
shall be appropriately marked with factory wording
sufficient to warn handlers against dropping, improper
stacking, upending or rolling.
The chassis shall be slide-in type, ready to operate
after installation.
The chassis shall be protected against the harmful
effects of airborne chemicals and saltwater corrosion.
The chassis shall have a hermetically sealed refrigerant
system with an external vibration isolated rotary
compressor. Indoor coils shall have copper tubing with
aluminum fins. Outdoor coils shall have copper tubing
with aluminum fins treated to resist the effects of airborne
chemicals and saltwater corrosion. All refrigerant coil fins
will have the necessary enhancements to achieve EER
and COP ratings of the unit. Refrigerant system metering
shall be done with capillaries.
Airflow system shall consist of one permanently
lubricated fan motor for the outdoor side and a separate
permanently lubricated two-speed motor for the indoor
blower.
Outdoor fan shall be multi-blade axial-flow design made
of non-corrosive material. Indoor fan shall be blower type
to optimize airflow and minimize air noise. All motors on
the exterior side of the weather barrier shall be painted
and enclosed to reduce the effects of moisture and
corrosion.
Units will have a positive cooling condensate disposal
system. The disposal system shall have a slinger ring on
the outdoor fan to dispose of condensate water and to
assist in cooling the outdoor coil.
Heat pump models shall be equipped with a temperature-
activated valve to allow condensate water generated
during defrost cycles to drain into the specified
drain system.
Units will provide fault codes, service modes, and auxiliary
controls settings from a user-friendly digital display.
Unit indoor and outdoor airflows must match the capacity
of the coils for efficient heat transfer and meet latent
and sensible heat requirements. Water blow-off shall not
occur on the indoor coil.
Unit shall have a sensor to prevent indoor coil freeze-up.
DRAIN PLATFORM
Units shall use a drain platform of non-corrosive material
to provide support for the unit as well as facilitate drain
connections. The platform allows unit extraction from the
closet while leaving plumbing intact.
WALL PLENUM
Wall plenums shall be constructed of heavy-gauge, zinc-
coated, phosphated steel with a baked-on enamel finish.
Plenums shall be installed through the exterior wall where
shown on the plans and shall be of correct depth to allow
sealing to exterior and interior walls.
EXTERIOR GRILLES
Each unit shall be equipped with a standard exterior
grille that has been designed to allow operation in high
ambient conditions.
Special exterior grilles or custom louver sections supplied
by others will conform to minimum free area requirements
and shall be submitted to independent labs, if requested,
for feasibility and airflow characteristics.
ELECTRICAL
Units shall be designed to operate on 230-208 or
265-volts, 60 Hz, single-phase power.
Units shall have means of electrical connection listed by
Underwriters Laboratories and compatible with the units'
required voltage and ampacity in conformance with
National Electrical Code (NEC) and all local codes.
FEATURES
Unit must be compatible with 2-wire Central Desk
Control systems.
Units must be compatible with Electronic Class-2 remote
wall thermostats.
Unit shall be equipped with Freeze Sentinel to
automatically activate the electric heaters (at 41°F)
and appropriate fan motors to warm and circulate
indoor air (to 46°F) to prevent damage due to freezing
temperatures. Freeze Sentinel shall operate when unit is
connected to a powered electrical circuit.
Unit shall be equipped with Heat Sentinel to automatically
provide cooling at 85
o
F to prevent an excessively hot
room. Once the room temperature reaches 80
o
F, the air
conditioner will turn off. When activated, Heat Sentinel
shall operate when unit is connected to a power
electrical circuit.
Heat Pump models must utilize reverse cycle defrost
to extend heat pump operation down to 25 degrees F.