Paquete 15tr York Zz15 - Tech Guide
Paquete 15tr York Zz15 - Tech Guide
Paquete 15tr York Zz15 - Tech Guide
Table of Contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Capacity Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Airflow Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Sound Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Typical Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Economizer Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Component Location
Cooling With Gas Heat (15 Ton)
1. Roof curbs in eight and fourteen inch heights. Roof curbs for transitioning from York®
Sunline™ footprint to the ZZ series foot prints are also available as a field installed
accessory.
Nomenclature
1 = First Generation
ZZ = Pkg AC Constant Volume (Export Only)
Cabinet Options
Heat Type
A = Std Cabinet
C = Cooling Only E = SSD (SST Drain Pan)
E = Electric Heat R = Reverse Drain Pan
N = 2 Stage Gas Aluminized Steel
S = 2 Stage Gas Stainless Steel
Additional Options
Sensors
Voltage
A = No Sensors
2 = 208/230-3-60 B = PHM (Phase Monitor)
4 = 460-3-60 C = DFS (Dirty Filter Switch)
D = SSD (Supply Air Smoke DET)
E = RSD ( Return Air Smoek DET)
Outdoor Air Option F = PHM, DFS
A = No Economizer G = PHM, SSD
B = Economizer w/Barometric RLF H PHM, RSD
D = Economizer w/Power EXH J = DFS, SSD
H = Motorized Damper K = DFS, SSD
L = SSD, RSD
M = PHM, DFS, SSD
N = PHM, DFS, RSD
Service Option
P = PHM, SSD, RSD
1 = No service options Q = DFS, SSD, RSD
2 = DSC (Disconnect Switch) R = PHM, DFS, SSD, RSD
3 = NCO (Non-PWR Conv. Outlet)
4 = PCO (Powered Conv. Outlet)
5 = DSC, NCO
6 = DSC, PCO
Features and Benefits • System Protection - Suction line freezestats are supplied
on all units to protect against loss of charge and coil frosting
Standard Features when the economizer operates at low outdoor air
• Service Friendly - The Sun™ Pro incorporates a number temperatures while the compressors are running. Every unit
of key features for ease of serviceability. has solid-core liquid line filter-driers and high and low-
pressure switches. Internal compressor protection is
The motor and blower slide out of the unit as a common
standard on all compressors. Phase Monitors are standard
assembly. This facilitates greater access to all the indoor
on units with Scroll compressors. This accessory monitors
airflow components, thus simplifying maintenance and
the incoming power to the unit and protects the unit from
adjustment.
phase loss and reversed phase rotation.
Service time is reduced through the use of hinged,
• Advanced Controls - Smart Equipment™ control boards
toolless panels. Such panels provide access to frequently
have standardized a number of features previously
inspected components and areas, including the control
available only as options or by utilizing additional controls.
box, compressors, filters, indoor motor & blower, and the
heating section. The panels are screwed in place at the
factory to prevent access by children or other
unauthorized persons. It is recommended that the panels
be secured with screws once service is complete.
The Smart Equipment™ control board used in this
Service windows have been placed in both condenser product will effectively operate the cooling system
section walls. Rotation of the cover allows easy access to down to 0°F when this product is applied in a comfort
the condenser coils for cleaning or inspection. cooling application for people. An economizer is
The Smart Equipment™ control board provides alarm typically included in this type of application. When
messages to help quickly identify any faults. applying this product for process cooling applications
All units use four filters of the same standard size. This (computer rooms, switchgear, etc.), please call the
standardization simplifies selections for filter replacement. applications department for Ducted Systems @ 1-
The non-corrosive drain pan slides out of the unit to permit 877-874-SERV for guidance. Additional accessories
easy cleaning. The drain pan is accessed by removing the may be needed for stable operation at temperatures
drain pan cover plate on the rear of the unit. Once the plate is below 30°F.
removed, the drain pan slides out through the rear of the unit.
All Sun™ Pro units have a second model nameplate
located inside the control access door. This is to prevent
deterioration of the nameplate through weathering.
• Coil Technology – All ZZ condensers utilize Micro-
Channel “all-aluminum” condensers which provide
improved heat transfer capabilities and reduced charge
volumes. All evaporators utilize a conventional copper
tube/aluminum fin design for proven reliability and
performance.
• Environmentally Aware - For improved Indoor Air
Quality, a combination of aluminum foil faced and
elastometric rubber insulations are used exclusively
throughout the units.
• Balanced Heating - The Sun™ Pro two stage gas heating
offers "Ultimate Heating Comfort" with a balance between
1st and 2nd stage gas heating to provide a well maintained
desired temperature.
to communicate with multiple BAS communication • Low Limit Control (LLC) - To prevent the supply air from
protocols to integrate with building automation systems. dropping below a specified set point, when there is a
• Reduce field installed complexity - Each unit will comes demand for cooling during cold outside conditions.
equipped with factory installed supply air, return air, and (Programmable Set point)
outdoor air temperature sensors providing key • Reliable - From the beginning - All units undergo
temperature readings thus reduce field installed computer automated testing before they leave the factory.
complexity. Units are tested for refrigerant charge and pressure, unit
• On-board USB Port - The new control comes with a long amperage, and 100% functionality. For the long term - All
list of features including data logging, current and units are painted with a long lasting, powder paint that
previous system faults and software update capabilities stands up over the life of the unit. The paint used has
using the on board USB port and common flash drive. been proven by a 750-hour salt spray test.
Energy use monitoring capabilities allow custom tailoring • Full Perimeter Base Rails - The permanently attached
to allow a system to work more efficiently at all times and base rails provide a solid foundation for the entire unit and
occupancy levels. Self test and start-up reports also protect the unit during shipment. The rails offer rigging
available from the board VIA the USB port. holes so that an overhead crane can be used to place the
• Embedded LCD Display - The board has a easy to read, units on a roof.
built-in LCD display and easy to use navigation joystick • Easy Installation - Gas and electric utility knockouts are
and buttons allowing the user to quickly navigate the supplied in the unit underside as well as the side of the
menus displaying unit status, options, current function, unit. Utility connections can be made quickly and with a
supply, return and outdoor temperatures, fault codes and minimum amount of field labor. All units are shipped with
other information. 2" throw-away filters installed.
• Safety Monitoring - The control monitors the outdoor, • Wide Range of Indoor Airflows - All supply air blowers
supply, and return air temperatures and the high and low are equipped with a belt drive that can be adjusted to
pressure switch status on the independent refrigerant meet the exact requirements of the job. A high static drive
circuits. On units with heating the gas valve and high option is available for applications with a higher CFM and/
temperature limit switches are monitored on gas and or static pressure requirement.
electric heating units. The control also monitors the • Warranty - All models include a 1-year limited warranty
voltage supplied to the unit and will protect the unit if low on the complete unit. Compressors and electric heater
voltage due to a brown out, or other electrical issue elements each carry a 5-year warranty. Aluminized steel
occurs. (10 yr.) and stainless steel tubular heat exchangers carry
a 15- year warranty.
• Low Ambient - An integrated low-ambient control allows
units to operate in the cooling mode down to 0°F outdoor
Factory Installed Options
ambient without additional components or intervention.
Optionally, the control board can be programmed to YORK® offers several equipment options factory installed, for
lockout the compressors when the outdoor air the Sun™ Proline.
temperature is low or when free cooling is available. • Optional Factory Installed Economizers - Sun™ Pro
• Anti-Short Cycle Protection - To aid compressor life, an units offer a variety of optional factory installed
anti- short cycle delay is incorporated into the standard economizers with low leak dampers. The outdoor air dry
control. Compressor reliability is further ensured by bulb sensor enables economizer operation if the outdoor
programmable minimum run times. For testing, the anti- air temperature is less than the set point of the economizer
short cycle delay can be temporarily overridden with the logic module. See economizer options section to
push of a button. determine the correct economizer for your application.
• Fan Delays - Fan on and fan off delays are fully • Down flow / End Return Economizers (with
programmable. Furthermore, the heating and cooling fan barometric relief and fresh air hood) - All units offer a
delay times are independent of one another. All units are variety of optional factory installed down flow
programmed with default values based upon their economizers that are shipped, installed and wired with
configuration of cooling and/or heating capacity. low leak dampers designed to meet ASHRAE 90.1,
• Nuisance Trip Protection and Three Strikes - To AMCA 511 Class 1A damper, and the International
prevent nuisance calls, the control board uses a three Energy Conservation Code (IECC) certification
times, you're out philosophy. The high, low-pressure requirements by achieving leakage rates of 3 CFM/sq.
switch, anti-freeze protection, low voltage or heating high ft. at 1" of static pressure. Each economizer goes
limit must trip three times within two hours before the unit through a rigorous 60,000 cycle test. Dry bulb, single
control board will lock out the associated compressor.An enthalpy, and dual enthalpy (with field installed kit) can
alarm message will be displayed on the LCD screen. be selected. The economizer has spring return, fully
modulating damper actuators and is capable of
• Lead-Lag - An integrated Lead-Lag option allows equal
introducing up to 100% outdoor air. As the outdoor air
run time hours on all compressors, thereby extending the
intake dampers open, the return air dampers close. The
life of all compressors. This option is selectable on the unit
changeover from mechanical refrigeration to
control board.
economizer operation is regulated by the outdoor air dry
automation system controller is factory installed. Includes • Motorized Outdoor Air Damper - The motorized outdoor
supply air sensor, return air sensor, with optional dirty air damper includes a slide-in/plug-in damper assembly with
filter indicator switch and air proving switch. an outdoor air hood and filters. The outdoor air dampers
• Honeywell BAS Control - The Honeywell W7750C open to the preset position when the indoor fan motor is
building automation system controller is factory installed. energized. The damper has a range of 0% to 100% outdoor
Includes air supply sensor, return air sensor, with optional air entry. Factory installed option or field installed accessory.
dirty filter indicator switch, and air proving switch. • Smoke Detectors - The smoke detectors stop operation
• Verasys - Verasys provides a simple user experience of the unit by interrupting power to the control board if
with configurable self-recognizing controllers without the smoke is detected within the air compartment.
need for any additional tools. Verasys creates enhanced • CO2 Sensor - Senses CO2 levels and automatically
integration of HVACR equipment, zoning, and controls. overrides the economizer when levels rise above the
Contractors are able to offer a complete bundled solution preset limits.
of equipment and controls to serve the light commercial • Dirty Filter Switch - This kit includes a differential
market. pressure switch that energizes the fault light on the unit
thermostat, indicating that there is an abnormally high
Field Installed Accessories pressure drop across the filters.
YORK® offers several equipment accessories for field • Coil Guard - Field installed decorative wire coil guard.
installation, for the Sun™ Pro line. • Hail Guard - This kit includes a sloped hood which installs
• Down flow and End Return Economizers (with fresh air over the outside condenser coil and prevents damage to
hood and barometric relief) - All units offer a variety of the coil fins from hail strikes. Field installed accessory only.
optional factory installed down flow economizers that are • Flue Exhaust Extension Kit - In locations with wind or
shipped, installed and wired with low leak dampers designed weather conditions which may interfere with proper
to meet ASHRAE 90.1, AMCA 511 Class 1A damper, and exhausting of furnace combustion products, this kit can be
the International Energy Conservation Code (IECC) installed to prevent the flue exhaust from entering nearby
certification requirements by achieving leakage rates of 3 fresh air intakes.
CFM/sq. ft. at 1" of static pressure. Each economizer goes
• Gas Heat High Altitude Kit - This kit converts a gas heat
through a rigorous 60,000 cycle test. Dry bulb, single
unit to operate at high altitudes, 2,000 to 6,000 feet.
enthalpy, and dual enthalpy (with field installed kit) can be
Conversion kits are available for natural gas and propane.
selected. The economizer has spring return, fully modulating
damper actuators and is capable of introducing up to 100% • Gas Heat Propane Conversion Kit - This kit converts a
outdoor air. As the outdoor air intake dampers open, the gas-fired heater from natural gas to propane. It contains the
return air dampers close. The changeover from mechanical main burner orifices and gas valve replacement springs.
refrigeration to economizer operation is regulated by the • Gas Piping Kit - Contains pipe nipples, fittings and gas cock
outdoor air dry bulb temperature or the outdoor air enthalpy required for gas supply connection with external shut off.
input. The dual enthalpy kit provides a second input used to • Electric Heaters - The electric heaters range from 3kW to
monitor the return air (field installed). The installer needs only 54kW and are available in all the voltage options of the
to assemble the outdoor air hood, attach the enthalpy control base units. The 54kW/208-240 volt, field-installed heater
the hood and mount the hood to the unit (Hood and control kit is not available with VAV units due to a lack of space to
are provided). accommodate the heater’s fuse block accessory.
• Single or Dual Enthalpy Control, Accessories - These All heaters are dual staged. Cooling units include an
kits contain the required components to convert a dry bulb adapter panel for easy installation of the electric heaters.
economizer to a single enthalpy and/or dual enthalpy Necessary hardware and connectors are included with the
economizer. heaters. All heaters are intended for single point power
• Barometric Relief Damper - Zero to 100% capacity supply.
barometric relief dampers for use with horizontal flow, or • Metal Frame Filter Kit - Metal frame with polyester filter
field installed economizers. medium.
• Power Exhaust - This accessory installs in the unit with a • Permanent Filters - Permanent filters are available.
down flow or horizontal end return economizer. Power
• Roof Curbs - The roof curbs have insulated decks and are
exhaust plugs into the connector in the unit bulkhead.
shipped disassembled The roof curbs are available in 8” and
User must purchase the 1EH0408 barometric relief
14” heights. For applications with security concerns, burglar
and hood kit when applying the product in a
bars are available for the duct openings of the roof curbs.
horizontal flow application. The power exhaust must
be mounted in the horizontal end return ductwork. • Roof Curb Transition - Single Piece Adapter (10” High) -
• Manual Outdoor Air Damper - Like the motorized outdoor Roof curbs for transitioning from Sunline™ units to Sun™
air damper, each manual outdoor air damper includes a Pro units. Fits 7.5 to 12.5 Sunline™ roof curbs only.
slide-in damper assembly with an outdoor air hood and • Burglar Bars - Mount in the supply and return openings
filters. Customers have a choice of dampers with ranges of to prevent entry into the duct work.
0% to 100% or 0% to 35% outdoor air entry. • Thermostat - The units are designed to operate with 24-
volt electronic and electro-mechanical thermostats.
d. The 15 ton unit shall have two independent refrigerant prevent the heating element system from operating at an
circuits, equally split in 50% capacity increments. excessive temperature. The Heating Section assembly shall
slide out of the unit for easy maintenance and service. Units
Unit Controls: with Electric Heating Sections shall be wired for a single point
a. Unit shall be complete with self-contained low-voltage power supply with branch circuit fusing (where required).
control circuit protected by a resettable circuit breaker on
the 24-volt transformer side. UNIT OPERATING CHARACTERISTICS
b. Unit shall incorporate a lockout circuit which provides Unit shall be capable of starting and running at 125 ºF outdoor
reset capability at the space thermostat or base unit, temperature, exceeding maximum load criteria of AHRI Stan-
should any of the following standard safety devices trip dard 340/360. The compressor, with standard controls, shall be
and shut off compressor. capable of operation down to 0 ºF outdoor temperature. Unit
1. Loss-of-charge/Low-pressure switch. shall be provided with fan time delay to prevent cold air delivery
before heat exchanger warms up. (Gas heat only)
2. High-pressure switch.
3. Freeze condition sensor on evaporator coil. If any of ELECTRICAL REQUIREMENTS - All unit power wiring shall
these safety devices trip, the LCD screen will display enter unit cabinet at a single factory provided location and be
the alarm message. capable of side or bottom entry to minimize roof penetrations
and avoid unit field modifications. Separate side and bottom
c. Unit shall incorporate "AUTO RESET" compressor over openings shall be provided for the control wiring.
temperature, over current protection.
STANDARD LIMITED WARRANTIES - Compressor – 5 Years,
d. Unit shall operate with conventional thermostat designs Heat Exchanger – 10 Years, Elect. Heat Elem. – 5 Years,
and have a low voltage terminal strip for easy hook-up. Parts – 1 Year
e. Unit control board shall have on-board diagnostics and
OPTIONAL OUTDOOR AIR (Shall be made available by either/
fault message display.
or):
f. Standard controls shall include anti-short cycle and low • DRY BULB AUTOMATIC ECONOMIZER - Outdoor and
voltage protection, and permit cooling operation down to return air dampers that are interlocked and positioned by
a selectable value as low as 0 °F. a fully-modulating, spring-return damper actuator. The
g. Control board shall monitor each refrigerant safety switch maximum leakage rate for the outdoor air intake dampers
independently. shall be designed to meet ASHRAE 90.1, AMCA 511
Class 1A damper, and the International Energy
GAS HEATING SECTION (IF EQUIPPED) Conservation Code (IECC) certification requirements by
achieving leakage rates of 3 CFM/sq. ft. at 1" of static
Heat exchanger and exhaust system shall be constructed of pressure. Changeover from compressor to economizer
aluminized steel, and be designed with induced draft combus- operation shall be provided by an integral electronic
tion with post purge logic, energy saving direct spark ignition, enthalpy control that feeds input into the basic module.
and redundant main gas valve. The heat exchanger shall be of The outdoor intake opening shall be covered with a rain
the tubular type, constructed of T1-40 aluminized steel for cor- hood that matches the exterior of the unit. Water
rosion resistance and allowing minimum mixed air entering tem- eliminator/filters shall be provided.
perature of 40 ºF. Burners shall be of the in-shot type,
Simultaneous economizer/compressor operation is also
constructed of aluminum-coated steel. All gas piping shall enter
possible. Dampers shall fully close on power loss.
the unit cabinet at a single location, through either the side or
Available with barometric relief and power exhaust.
bottom, without any field modifications. An integrated control
board shall provide timed control of evaporator fan functioning • MOTORIZED OUTDOOR AIR DAMPERS - Outdoor and
and burner ignition. Heating section shall be provided with the return air dampers that are interlocked and positioned by
following minimum protection: a 2- position, spring-return damper actuator. A unit-
mounted potentiometer shall be provided to adjust the
a. Primary and auxiliary high-temperature limit switches. outdoor and return air damper assembly to take in the
b. Induced draft pressure sensor. design CFM of outdoor air to meet the ventilation
requirements of the conditioned space during normal
c. Flame roll out switch (manual reset). operation. Whenever the indoor fan motor is energized,
d. Flame proving controls. the dampers open up to one of two pre-selected positions
- regardless of the outdoor air enthalpy. Dampers return to
e. All two stage gas units shall have two independent the fully closed position when the indoor fan motor is de-
stages of capacity as shown on Page 5. energized. Dampers shall fully close on power loss.
ELECTRIC HEATING SECTION (IF EQUIPPED) ADDITIONAL FACTORY INSTALLED OPTIONS
An electric heating section, with nickel chromium elements, • ALTERNATE INDOOR BLOWER MOTOR – For
shall be provided in a range of 3 thru 54KW. The heating sec- applications with high restrictions, units are available with
tion shall have a primary1 limit control(s) (automatic reset) to
optional indoor blower motors that provide higher static • STAINLESS STEEL HEAT EXCHANGER – For
output and/or higher airflow. applications in a corrosive environment, this option
• CONVENIENCE OUTLET (POWERED/NON-POWERED)– provides a full stainless steel heat exchanger assembly.
Unit can be provided with an optional 120VAC GFCI outlet • SMOKE DETECTOR – A smoke detector can be factory
with cover on the corner of the unit housing the compressors. mounted and wired in the supply and/or return air
• ELECTRIC HEAT - Electric Heaters range from 3kW to compartments.
54kW and are available in all the voltage options of the
base unit. OTHER PRE-ENGINEERED ACCESSORIES AVAILABLE
• PHASE MONITOR - Designed to prevent damage in out- • ROOF CURB - 14” and 8” high, full perimeter knockdown
of-phase condition. curb, with hinged design for quick assembly.
• COIL GUARD - Designed to prevent condenser coil • BAROMETRIC RELIEF DAMPER – (Unit mounted –
damage. Downflow, Duct Mounted – Horizontal) – Contains a rain
• BAS CONTROLS HARDWARE - Include supply air hood, air inlet screen, exhaust damper and mounting
sensor, return air sensor, dirty filter indicator and air hardware. Used to relieve internal air pressure through
proving switch. the unit during economizer operation.
• DIRTY FILTER SWITCH – This kit includes a differential • PROPANE CONVERSION KIT – Contains new orifices
pressure switch that energizes the fault light on the unit and gas valve springs to convert from natural to L.P. gas.
thermostat, indicating that there is an abnormally high- • ECONOMIZER (Downflow and Horizontal flow)
pressure drop across the filters. • POWER EXHAUST – (Unit mount – Downflow, Duct
• BREAKER – An HACR breaker can be factory installed mount – Horizontal flow)
on gas heat units or cooling units with electric heat. • DUAL ENTHALPY KIT - Provides a second input to
• DISCONNECT SWITCH - A disconnect can be factory economizer to monitor return air.
installed on a cooling only units sized for the largest
electric heat available.
Physical Data
Length 119-1/2
Dimensions (inches) Width 59
Height 50-3/4
OPERATING WT. (lbs.) 1360
Type Scroll
COMPRESSORS3 Quantity 2
Unit Capacity Step (%) 50/100
Quantity 1
Fan size (inch) 15 x 15
Type Centrifugal
Motor Sheave 1VM50 1VP56
EVAPORATOR FAN
Blower Sheave AK74 BK77
DATA
Belt A54 BX55
Motor HP each 3 5
RPM 1725 1725
Frame size 56 184T
4 - (24 x 20 x 2)4,5
FILTERS Quantity-Size
4 - (24 x 20 x 4)6
Capacity Performance
ZZ15 Cooling Capacities
1. These capacities are gross ratings. For net capacity, deduct air blower motor, MBh = 3.415 x kW. Refer to the appropriate Blower
Performance Table for the kW of the supply air blower motor.
2. These ratings include the condenser fan motors (total 1 kW) and the compressor motors but not the supply air blower motor.
Drive Selection
1. 2600 CFM
2. 1.6 iwg
3. Using the supply air blower performance table below, the following data point was located: 1268 RPM & 1.95 BHP.
4. Using the RPM selection table below, Size X and Model Y is found.
5. 1.95 BHP exceeds the maximum continuous BHP rating of the 1.5 HP motor. The 2 HP motor is required.
6. 1268 RPM is within the range of the 2 HP drives.
7. Using the 2 HP motor and drive, .5 turns open will achieve 1268 RPM.
Airflow Performance
Altitude and Temperature Correction for CFM, Static use the indoor blower tables for high altitude applications, certain
Pressure and Power. corrections are necessary.
The information below should be used to assist in application of A centrifugal fan is a "constant volume" device. This means that, if
product when being applied at altitudes at or exceeding 1000 feet the rpm remains constant, the CFM delivered is the same
above sea level. regardless of the density of the air. However, since the air at high
altitude is less dense, less static pressure will be generated and
The air flow rates listed in the standard blower performance
less power will be required than a similar application at sea level.
tables are based on standard air at sea level. As the altitude or
Air density correction factors are shown in Table Altitude/
temperature increases, the density of air decreases. In order to
Temperature Correction Factors and following Figure.
Altitude/Temperature Correction Factors
Air Altitude (Ft.)
Temp. 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
40 1.060 1.022 0.986 0.950 0.916 0.882 0.849 0.818 0.788 0.758 0.729
50 1.039 1.002 0.966 0.931 0.898 0.864 0.832 0.802 0.772 0.743 0.715
60 1.019 0.982 0.948 0.913 0.880 0.848 0.816 0.787 0.757 0.729 0.701
70 1.000 0.964 0.930 0.896 0.864 0.832 0.801 0.772 0.743 0.715 0.688
80 0.982 0.947 0.913 0.880 0.848 0.817 0.787 0.758 0.730 0.702 0.676
90 0.964 0.929 0.897 0.864 0.833 0.802 0.772 0.744 0.716 0.689 0.663
100 0.946 0.912 0.880 0.848 0.817 0.787 0.758 0.730 0.703 0.676 0.651
1.100
1.050
1.000
Sea Level
0.950
Correction Factor
1000 ft
0.900 2000 ft
3000 ft
0.850
4000 ft
0.800 5000 ft
6000 ft
0.750 7000 ft
8000 ft
0.700
9000 ft
10000 ft
0.650
0.600
40 50 60 70 80 90 100
Air Temperature (ºF)
The examples below will assist in determining the airflow Example 2: A system, located at 5,000 feet of elevation, is to
performance of the product at altitude. deliver 6,000 CFM at a static pressure of 1.5". Use the unit blower
tables to select the blower speed and the BHP requirement.
Example 1: What are the corrected CFM, static pressure, and
BHP at an elevation of 5,000 ft. if the blower performance data is Solution: As in the example above, no temperature information
6,000 CFM, 1.5 IWC and 4.0 BHP? is given so 70°F is assumed.
Solution: At an elevation of 5,000 ft. the indoor blower will still The 1.5" static pressure given is at an elevation of 5,000 ft. The
deliver 6,000 CFM if the rpm is unchanged. However, Airflow first step is to convert this static pressure to equivalent sea level
Performance Table must be used to determine the static pressure conditions.
and BHP. Since no temperature data is given, we will assume an
Sea level static pressure = 1.5 / .832 = 1.80"
air temperature of 70°F. Altitude/Temperature Correction
Enter the blower table at 6000 CFM and static pressure of 1.8".
Factors Table shows the correction factor to be 0.832.
The rpm listed will be the same rpm needed at 5,000 ft.
Corrected static pressure = 1.5 x 0.832 = 1.248 IWC
Suppose that the corresponding BHP listed in the table is 3.2.
Corrected BHP = 4.0 x 0.832 = 3.328
This value must be corrected for elevation.
BHP at 5,000 ft. = 3.2 x .832 = 2.66
RPM Selection
Size Airflow Max Motor Blower 6 Turns 5 Turns 4 Turns 3 Turns 2 Turns 1 Turn Fully
Model HP
(Tons) Option BHP Sheave Sheave Open Open Open Open Open Open Closed
15 Std. 3 3.45 1VM50 AK74 N/A 887 936 986 1035 1084 1134
ZZ
(15) H. Static 5 5.75 1VP56 BK77 1052 1095 1136 1175 1216 1272 N/A
Airflow Performance
ZZ15 Side Duct Application
Sound Performance
Outdoor Sound Power Levels ZZ15
15
ZZ 81 85.0 86.0 82.5 79.5 75.0 70.0 65.0 59.0
(15)
Electrical Data
!
Typical ZZ15 Cooling Unit with Gas Heat 460 Volt Wiring Diagram
Typical ZZ15 Cooling Unit with Gas Heat 460 Volt Unit (Options)
!
#
# !
FRONT
FRONT
LEFT LEFT
B C C D
A B
A
E
D F
Y
X
FRONT
LEFT
Size Weight (lbs.) Center of Gravity 4 Point Load Location (lbs.) 6 Point Load Location (lbs.)
Model
(Tons) Shipping Operating X Y A B C D A B C D E F
15
ZZ 1365 1360 41.3 34.5 427 369 262 303 292 264 240 170 187 207
(15)
28.86 29.66
44.09
15.23
14.85
29.03
29.03
14.85
C
D
E
11 3/8
F
See detail B for drain location
21 3/16
LEFT 4 3/16
FRONT
59
27 5/16
89
Detail A
3.184
3.184
Ø 3.126 Ø 3.126
17.541
14.594
7.705 7.715
4.727 4.737
1” FPT
TOP VIEW
89
32 11/16
6 13/16
6 13/16
RETURN SUPPLY
AIR AIR
24
27 1/2
LEFT 18 21 RIGHT
20 1/8 19 1/8
17 1/8
12 5/16
18 1/16 FRONT
3X Ø 0.875
Ø 2.469
Convenience Outlet
Power Entry Ø 7/8
FRONT
ZZ15 Unit Side Duct Openings
Dot Plugs
18-1/4
D
B
5-5/32
2-7/8
C 31-5/8
4-5/16
RIGHT
20
SUPPLY
20 6
RETURN
2 TYP.
30
50-1/2 INSULATED DECK UNDER
COMPRESSOR SECTION
FRONT
8 or 14
2 TYP
23 4
50-1/2 30-1/2
26 80-5/8
RETURN
SUPPLY
10
76-5/8
94 59-1/4
FRONT RIGHT
64-1/4
Economizer Options
Economizer Usage
Application Cabinet Height Description Model
Side Return All Horizontal economizer without barometric relief 2EE047069241
Downflow, End Return 42" Economizer, 42” tall cabinet 2EE047174242
Horizontal or ERV 50" Economizer, 50” tall cabinet 2EE047176242
Field Installed
Duct Work
Low Leak
Economizer
Power Exhaust
Barometric Relief Damper
Field Installed
Duct Work
Power Exhaust
Barometric Barometric Fresh Air Hood
Relief Damper Relief Hood