Guide Specifications - York AFFINITY R-410A DNX Technical Manual

between the mechanical cooling and economizer
operation. Independent blade design insures proper
control and less than 1% leak rate. Includes hood and
mesh bird screen filter integrated into the hood, dry bulb
sensor and relief damper. Separate field accessories of
single enthalpy and dual enthalpy are also available. A
built-in barometric relief of 25% is provided.
• Single Enthalpy Sensor - Sensor replaces dry bulb
sensor standard in economizer kit. Provides improved
economizer operation by sensing the dry bulb
temperature from outdoors plus the enthalpy content of
the outdoor air.
• Dual Enthalpy Sensor - Additional sensor to single
enthalpy sensor. Sensor senses both the return air
temperature dry bulb and humidity in conjunction with the
single enthalpy to determine the most economical mix.
Single Enthalpy sensor also required.
• Hail Guard Kit - Kit contains protective grilles made of
expanded aluminum with full perimeter frame. Sloped
hoods are also included to assure maximum protection.
• Anti Short Cycle Timer (DNZ Units Only) - Automatically
prevents the compressor from restarting for 5 minutes after
cycled off.Not required if Thermostat 2ET07700224 and
2ET04700224 are used. Standard in all DNX and DNY
units.
• Filter/Frame Kit (Single Phase Only) - Kit contains the
necessary hardware to field install return air filters into the
base unit. Pre-cut filter racks and appropriate cleanable
standard size filters are shipped in one kit. The filter rack
is suitable for either 1" or 2" filters. (1" filter is supplied)
This kit is available for single phase horizontal or vertical
duct application only. Standard in all 3 Phase models.
• Motorized Fresh Air Damper - Designed for duct
mounted side supply/return and unit mounted down
supply/return applications. Damper capable of providing
0% through 50% of outdoor air (field supplied). Closes on
power loss, includes hood and screen assembly.
• Rectangle To Round Adapters - Kit includes one supply
and one return air rectangle to round duct adapter.
Adapters are preformed and designed to fit over current
duct openings on the base unit. Transition is from side
square duct opening to 14" round duct opening.
• Roof Curbs - NRCA approved curbs provide proper fit to
base unit for rooftop installations. Curbs are designed to
be assembled through hinge pins in each corner. Kit also
provides seal strip to assure a water tight seal. 8 and 14
inch high roof curbs are available.
• Manual Outdoor Damper - Provides 0% through 50%
outdoor air capability (field adjustable). Designed for duct
mounted side supply/return applications. Includes hood
and screen assembly.
• Wall Thermostat - The units are designed to operate with
24-volt electronic and electro-mechanical thermostats. All
units can operate with single stage heat/single stage cool
thermostats - with or without the economizer.
Johnson Controls Unitary Products
• Low Ambient Kit - Kit provides necessary hardware to
convert unit to operate in cooling cycle down to 0º F.
Standard unit operation 45º F.
• Transformer Kit - Kit provides necessary hardware to
provide single phase models from factory furnished 40 VA
transformer capability to 75 VA transformer capability.
(Required on installations with economizer or motorized
damper.)

Guide Specifications

General
Units shall be manufactured by Unitary Products in an ISO
9001 certified facility. YORK's Affinity™ package units give you
the flexibility and choices you need in today's market. These
packaged cooling/heating air conditioners are designed for
outdoor installation. Only utility and duct connections are
required at the point of installation. The single or two stage gas
fired heaters have aluminized steel tubular heat exchangers
and spark to pilot ignition. They are available in natural gas with
field conversion to propane.
Description
Units shall be factory-assembled, single packaged, Electric
Cooling/Gas Heating units, designed for outdoor mounted
installation. For SEER ratings, refer to technical literature. They
shall have built in, equal size, field convertible duct connections
for down discharge supply/return or horizontal discharge
supply/return. The units shall be factory wired, piped, charged
with R-410A Refrigerant and factory tested prior to shipment. All
unit wiring shall be both numbered and color coded. All units
shall be manufactured in a facility certified to ISO 9001
standards, and the cooling performance shall be rated in
accordance with DOE and ARI test procedures. The heating
performance shall be rated to DOE and GAMA test procedures.
Units shall be CSA listed and classified to ANSI Z21.47/CAN/
CSA 2.3 standards and UL 1995/CAN/CSA No. 236-M90
conditions.
Unit Cabinet
Unit cabinet shall be constructed of galvanized steel, with
exterior surfaces coated with a non-chalking, powdered paint
finish, certified at 1000 hours salt spray test per ASTM-B117
standards. The unit top shall be a single piece "Water Shed"
design, with drip edges and no-seam corners to provide
optimum water integrity. Unit shall have a rigidly mounted
condenser coil guard to provide protection from objects and
personnel after installation. Indoor blower section shall be
insulated with up to 3/4" thick, aluminum, foil faced insulation,
fastened to prevent insulation from entering the air stream.
Cabinet panels shall be "large" size, easily removable for
servicing and maintenance, with built-in lift handles. Unit shall
be built on a formed, "Super-Structure" design base pan, with
embossments at critical points to add strength, rigidity and aid
in minimizing sound. Full perimeter base rails shall be provided
to assure reliable transit of equipment, overhead rigging, for
truck access and proper sealing on roof curb applications. Base
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