YORK Sunline 2000 Heat Pumps are convertible single
package units with a common cabinet and common roof curb
for the 3, 4 and 5 ton sizes. The units were designed for
residential and light commercial applications. They can easily
be installed on a roof curb, slab, roof jack or frame.
All units are self--contained and assembled on rigid full
perimeter base rails allowing for 3--way fork lift access and
overhead rigging. Every unit is completely charged, wired,
piped and testedat the factory to provide for a quick and easy
field installation.
The units are available with supplemental electric heaters as
field--installed accessories.
Both down and side discharge airflows are available without
having to swap panels. The installer simply removes the duct
covers for the desired configuration. Economizers may be
used on either side or down discharge applications with no
modifications required.
All models include a 1--year limited warranty on the complete
unit. Compressors and electric heater elements each carry an
additional 4--year warranty.
FEATURES
CONTROLS -- These heat pumps utilize a unique time--
temperature defrost circuit which adjusts the time between
defrost cycles based on the outdoor temperature to provide
optimal comfort control and ensure reliable operation. The
ambient--modified,time--temperature defrost control extends the
time below 35°F and shortens the time above 35°F.The nominal
defrost times are field adjustable to 50, 80 and 110 minutes. The
defrost time is initiated and terminated by a liquid line control with
a 10 minute override limit built into the defrost control.
bottomduct openings are coveredwhenthey leave the factory.
If a side supply/side return is desired, you simply remove the
two side duct covers from the outside of the unit and discard
them. If a bottom supply/return is desired, you simply remove
thetwobottom duct covers and discard them. No panel cutting
or swapping is required! Convertible airflow design allows
maximum field flexibility and minimum inventory.
FACTORY--INSTALLED OPTIONS -- Economizers can be
installedatthe factory.They are shipped installed and wired. The
outdoorairhoodneedsonlyto befield assembledand installed.
Adjustable belt--drive blowers are available on most models
from the factory for complete air flow flexibility.
FIELD--INSTALLED ACCESSORIES -- Accessories were
designed for quick and easy installation. The motorized
damper and economizers simply slide in and electrical
connections are made by modular plugs. Electric heaters
mount easily and knockouts are provided in the internal
partitions to connect the elements to the control box single
point kit.
The motorized air damper includes a slid--in/plug--in damper
assembly with a rainhood and filters. The outdoor air dampers
open when the indoor fan motor is energized. The damper is
capable of providing 0% through 100% of outdoor return air
opening.
The manual outdoor damper provides 0% through 35% or 0%
through100% ofreturn airopening (fieldadjustable).Designed
for duct mounted side or bottom supply/return applications.
Includes rain hood assembly and filter.
The 14" high roof curb is shipped knocked down. A roof curb
deckisnotrequired becausethe bottomof theunitisinsulated.
COMMON FOOTPRINT/COMMON CABINET -- The 3, 4 and
5tonunitsallsharetheexactsamecabinet -- and therefore the
same roof curb. Younow have the flexibility of setting one curb
and, after the internal load has been determined, placing the
proper tonnage unit on that curb.
HIGH EFFICIENCY -- All units have a minimum SEER of 10, a
COP of 3.0 (high) and 2.0 (low) and an HSPF as high as 7.3.
These efficiencies exceed all legislated minimum levels and
provide low operating costs.
WIDE RANGE OF INDOOR AIRFLOWS -- All models operate
over a wide range of design conditions with a 3--speed direct-drive fan motor. Belt--drive blowers are also available on all
models.
FULL PERIMETER BASE RAILS -- The permanently
attachedbase rails provide asolidfoundation for the entire unit
and protect the unit during shipment. The rails provide fork lift
accessfrom 3 sides andriggingholes are also providedsothat
an overhead crane can be used to place the units on a roof.
FEATURES - CONT'D.
SYSTEM PROTECTION -- Crankcase heaters and internal
compressorprotectionarestandardonallcompressors.Every
unit has a liquid line filter--drier, low pressure switch, high
pressure switch and high temperature switch to protect all
systemcomponents.Asuction line freezestat is supplied on all
three--phase units to protect against loss of charge and coil
frosting due to low economizer outdoor air temperature while
the compressor is running. All units will provide cooling at
ambient temperatures down to 45°F.
UTILITY CONNECTIONS MADE EASY -- Electric utility
knockoutsare provided intheunit underside as wellas the side
of the unit. A clearly identified location is provided to mount a
SUNLINE 2000 Heat Pump
DIRECT DRIVE
BLOWER MOTOR
(Belt-Drive Option
also available on some
models)
SIMPLE CONTROLCIRCUIT -- Mate--n--lock plug connectors
are used where line and low voltage wires pass thru internal
bulkheads. This allows for easier troubleshooting and
component replacement. The electrical control box is not
located in the compressor compartment so the access cover
can be removed for troubleshooting without affecting the
normal system operating pressures.
AIRFILTERS-- Units come standard with1"throwawayfilters.
The unit filter racks can accommodate 1" or 2" filters without
any modifications.
TABLE OF CONTENTS
Description
Features
Ratings
Physical Data
Cooling Capacities - 3 Ton
Cooling Capacities - 4 Ton
Cooling Capacities - 5 Ton
Heating Capacities
Supply Air Blower Perf. - 3 & 4 Ton w/Belt-Drive
Supply Air Blower Perf. - 5 Ton w/Belt-Drive
Supply Air Blower Perf. - 3, 4 & 5 Ton w/Direct-Drive
Motor and Drive Data
Static Resistances
NOTE: 1. Certified in accordance with the Unitary Small Equipment certification program, which is based on ARI Standard 210/240.
2. Rated in accordance with ARI Standard 270.
3. Heaters available as accessories - all with single point power supply.
SEER = Seasonal Energy Efficiency Ratio - the total cooling output in BTU's during a normal annual usage period for cooling divided by the total electric power input
in watt-hours during the same period.
EER = Energy Efficiency Ratio-the cooling capacity in BTU's per hour (BTUH) divided by the power input in watts at any given set of rating conditions, expressed in BTUH per watt
(BTUH/watt).
COP = Coefficient of Performance - the total heating capacity provided by the refrigeration system, including circulating fan heat but excluding supplementary
resistance (BTU's per hour) divided by the total electric input (watts) x 3.412.
NOTE: These values have been accessed using a model of sound propagation from a point source into the hemispheric free field. The dBA values provided are to be used for reference only.
CalculationofdBAvalues cover matters of system designandthefanmanufacturerhasnowayofknowingthedetails of each system. This constitutesanexceptiontoanyspecificationorguarantee
requiring a dBA value or sound data in any other form than sound power level ratings.
PHYSICAL DATA
BASIC UNITS
BCH
3
4
1
2
1
1
2
SUPPLYAIR
BLOWER
INDOOR
COIL
OUTDOOR
FAN
OUTDOOR
COIL
AIR
FILTERS
(SEE NOTE)
MODELS
CENTRIFUGAL BLOWER (Dia. x Wd. in.)12 x 1012 x 1012 x 10
FAN MOTOR HP(DIRECT-DRIVE)
FAN MOTOR HP(BELT-DRIVE)1.51.51.5
ROWS DEEP433
FINS PER INCH161515
FACE AREA(Sq. Ft.)4.35.15.1
PROPELLER DIA. (in.)222224
FAN MOTOR HP
NOM. CFM TOTAL430042004500
ROWS DEEP111
FINS PER INCH202020
FACE AREA(Sq. Ft.)17.117.117.1
QUANTITY PER UNIT (15" x 20" x 1")222
QUANTITY PER UNIT (14" X 25" X 1")111
TOTAL FACE AREA (sq. ft.)6.66.66.6
036048060
1
2
1
3
CHARGEREFRIGERANT22 (lbs./oz.)7/129/28/4
COMPRESSOR HERMETIC, RECIPROCATING (Qty)111
NOTE: Filter racks can accommodate 1" or 2" thick filters.
These capacities are gross ratings. For net capacity, determine the KW of the supply air blower motor from the Blower Performance Table, multiply this value by
3.415 MBH / KW to determine the motor heat, and deduct this heat from the gross capacity of the unit.
2
These ratings include the compressor and the outdoor fan motors but not the supply air blower motor. The total outdoor fan motor power input is 0.35 KW.
Refer to the Blower Performance Table for the KW of the supply air blower motor.
These capacities are gross ratings. For net capacity, determine the KW of the supply air blower motor from the Blower Performance Table, multiply this value by
3.415 MBH / KW to determine the motor heat, and deduct this heat from the gross capacity of the unit.
2
These ratings include the compressor and the outdoor fan motors but not the supply air blower motor. The total outdoor fan motor power input is 0.35 KW.
Refer to the Blower Performance Table for the KW of the supply air blower motor.
These capacities are gross ratings. For net capacity, determine the KW of the supply air blower motor from the Blower Performance Table, multiply this value by
3.415 MBH / KW to determine the motor heat, and deduct this heat from the gross capacity of the unit.
2
These ratings include the compressor and the outdoor fan motors but not the supply air blower motor. The total outdoor fan motor power input is 0.35 KW.
Refer to the Blower Performance Table for the KW of the supply air blower motor.
*All motors have solid bases and are inherently protected. These motors can be selected to operate into their service factor because they are located in the moving air, upstream of any
heating device.
Unitary Products Group9
BLOWER
RANGE
(RPM)
HPRPM
MOTOR*
FRAME
SIZE
SERVICE
FACTOR
ADJUSTABLE
MOTOR PULLEY
PITCH
DIA.
(in.)
BORE
(in.)
FIXED
BLOWER PULLEY
PITCH
DIA.
(in.)
BORE
(in.)
PITCH
LENGTH
(in.)
BELT
DESIG-
NATION
036-21564-002-A-0404
STATIC RESISTANCES
EXTERNAL STATIC PRESSURE DROP
RESISTANCE, IWG
DESCRIPTION
Economizer
Electric Heaters
Bottom Duct Connections
1
Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
2
The pressure thru the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct system is less than 0.25 IWG, the unit will deliver less CFM
during full economizer operation.
1, 2
1
5 - 15 KW0.040.050.060.070.080.100.120.140.16
20 - 30 KW0.060.070.080.090.110.130.150.170.20
1
100012001400160018002000220024002600
0.070.080.090.110.130.150.170.200.23
0.060.070.080.090.100.110.120.140.16
CFM
HEATER / CFM LIMITATIONS
HEATER
SIZE
NOM. KW
5
7
10
15
20
30
5
7
10
15
20
30
VOLTAGE
208 /
230-1-60
208 /
230-3-60
UNIT MODEL SIZE, NOMINAL TONS
1
345
MINIMUM SUPPLYAIR CFM
1,100
1,100
1,200
1,200
1,300
-
1,100
1,100
1,200
1,200
1,300
-
1,300
1,300
1,300
1,300
2
1,300
2
-
1,300
1,300
1,300
1,300
2
1,300
2
-
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
HEATER
SIZE
VOLTAGE
NOM. KW
7
10
15
460-3-60
20
30
10
15
20
30
1
208/230 and 460 volt heaters are UL approved.
208/230 and 575 volt heaters are CGA approved.
2
CGA minimum is 1,400 CFM.
575-3-60
UNIT MODEL SIZE, NOMINAL TONS
1
345
MINIMUM SUPPLYAIR CFM
1,100
1,200
1,200
1,300
-
1,200
1,200
1,300
-
1,300
1,300
1,300
1,300
-
1,300
1,300
1.400
-
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,800
FIELD WIRING
2
1
24-volt thermostat with subbase:
—2TH11700224 for manual changeover.
—2TH11704124 for automatic changeover.
2
Only required on units with supplemental electric heat.
CONTROL WIRING
POWER WIRING
2
3
4
TO REMOTE SENSOR
2TH04702224 IF USED
REFER TO ELECTRICAL DATA
TABLES TO SIZE THE
DISCONNECT SWITCH, THE
WIRING AND OVERCURRENT
PROTECTION
REFER TO ELECTRICAL DATA
TABLES TO SIZE THE
DISCONNECT SWITCH, THE
WIRING AND OVERCURRENT
PROTECTION
10Unitary Products Group
036-21564-002-A-0404
ELECTRICAL DATA- Basic Unit (Direct-Drive)
VOLTAGE
MODEL
BCH
POWER SUP
PLY
LIMITATIONS
-
(SEE NOTE 1)
COMPRESSOR
MIN.MAX.RLALRA
208/230-1-60
208/230-3-60
036
460-3-60
575-3-60
208/230-1-60
208/230-3-60
048
460-3-60
575-3-60
208/230-1-60
208/230-3-60
060
460-3-60
575-3-60
NOTES:1. Rated in accordance with ARI Standard 110, utilization range “A”.
2. Dual element, time delay type.
187
187
414
518
187
187
414
518
187
187
414
518
253
253
504
630
253
253
504
630
253
253
504
630
19.0
11.9
5.9
4.8
25.0
14.7
7.7
6.4
32.1
19.3
10.0
7.9
105
85
42
34
105
130
64
52
169
123
62
50
OUTDOOR
FAN
MOTOR,
FLA
1.7
1.7
1.0
1.0
2.3
2.3
1.4
1.4
2.3
2.3
1.4
1.4
SUPPLY
AIR
BLOWER
MOTOR,
FLA
4.4
4.4
2.2
2.2
5.0
5.0
2.2
2.2
6.6
6.6
3.3
3.3
MINIMUM
CIRCUIT
AMPACITY
29.9
21.0
10.6
10.2
38.6
25.7
13.2
11.6
49.0
33.0
17.2
14.6
MAX.
FUSE
SIZE,
(SEE NOTE 2)
AMPS
45
30
15
15
50
40
20
15
80
50
25
20
ELECTRICAL DATA- Heat Pump with Supplemental Electric Heat (Direct-Drive)
MAX.
HACR
BREAKER
SIZE,
AMPS
45
30
15
15
60
40
20
15
80
50
25
20
SUPPLY
BLOWER
MOTOR
MODEL
BCH
POWER
SUPPLY
HEATER
ACCESSORY
MODEL
NUMBER
2CE04500506
2CE04500706
208-1-60
2CE04501006
2CE04501506
2CE04502006
2CE04500506
2CE04500706
230-1-60
2CE04501006
2CE04501506
2CE04502006
2CE04500525*
2CE04500725*
208-3-60
036
2CE04501025
2CE04501525
2CE04502025
2CE04500525*
2CE04500725*
230-3-60
2CE04501025
2CE04501525
2CE04502025
2CE04500746*
460-3-60
2CE04501046*
2CE04501546*
2CE04502046*
2CE04501058
575-3-60
2CE04501558
2CE04502058
1
Dual element, time delay type
2
Standard circuit breakers may be used in Canada and on applications
over 60 amps where the heaters are separately fused.
* These electric heaters DO NOT include a fuse box. If a fuse box is
required to meet a local code ((eg., Chicago), the following fuse
block accessories are available for field installation.
AIR
FLA
4.4
4.4
4.4
4.4
2.2
2.2
ELECTRIC HEATERS
KWSTAGES
4.0
5.6
8.0
11.9
15.9
5.3
7.5
10.6
15.9
21.2
4.0
5.6
8.0
11.9
15.9
5.3
7.5
10.6
15.9
21.2
6.8
10.1
13.6
19.5
10.6
15.9
21.2
1
1
1
2
2
1
1
1
2
2
1
1
1
2
2
1
1
1
2
2
1
1
1
2
1
1
1
Electric Heat
Correction
Factors
MINIMUM
TOTAL
AMPS
CIRCUIT
AMPACITY
19.1
27.1
38.3
57.4
76.6
101.6
125.5
22.1
31.2
44.2
66.2
88.3
112.7
140.3
11.0
15.6
22.1
33.1
44.2
12.7
18.0
25.5
38.2
51.0
8.2
12.1
16.4
23.5
10.2
15.3
20.4
Nominal VoltageVoltage
2082081.00
2402300.92
4804600.92
6005750.92
53.8
63.7
77.7
57.5
68.9
85.1
34.8
40.5
48.6
62.4
76.2
36.9
43.5
52.8
68.8
84.7
21.2
26.4
31.9
41.2
15.5
21.9
28.2
MAX.
FUSE
SIZE
AMPS
60
70
80
110
150
70
80
90
125
150
40
45
50
70
80
45
50
60
70
90
25
30
35
45
20
25
30
1
MAX.
SIZE
HACR
BREAKER
AMPS
60
70
80
110
150
70
80
90
125
150
40
45
50
70
80
45
50
60
70
90
25
30
35
45
20
25
30
KW Cap
Multipier
2
Fuse Block
2FB04700425208/240 Volts
2FB04700546460 Volts
Unitary Products Group11
036-21564-002-A-0404
ELECTRICAL DATA- Heat Pump with Supplemental Electric Heat (Direct-Drive)
Economizer50
Motorized Outdoor Air Damper26
Barometric Relief/Fixed
Outdoor Air Intake Damper
10
Roof Mounting Curb92
Belt-Drive Blower5
FACTORY INSTALLED OPTIONS
036-21564-002-A-0404
ECONOMIZERS - Units equipped with the factory-installed
economizer option have dampers that are positioned by a
spring return, fully modulating damper actuator capable of
introducing up to 100% outdoor air. As the outdoor air intake
dampers open, the return air dampers close. The changeover
from mechanical refrigeration to economizer operation is
determined by a single input electronic enthalpy control or by a
dual input electronic enthalpy control. Simultaneous
compressor and economizer operation is also possible.
Thesingle enthalpy system contains a sensor that monitors the
outdoor air
allowing the dampers to open or close.
which automatically operates the damper actuator
FIELD--INSTALLED ACCESSORIES
SINGLE INPUT ELECTRONICENTHALPY ECONOMIZER --
Includes a slide--in/plug--in damper assembly with fully
modulatingspringreturnmotoractuatorcapableofintroducing
up to 100% outdoor air, one outdoor air electronic enthalpy
sensor and a rainhood with filters. The rainhood is painted to
match the basic unit and must be field--assembled before
installation. Economizer dampers are 2% low leakage type.
DUAL INPUT ELECTRONIC ENTHALPY ECONOMIZER -Includes the same damper system and rainhood with filters as
described for a single enthalpy economizer above except this
accessory contains two enthalpy sensors. It uses a differential
enthalpy control that compares the outdoor air versus the
return air. The logic module then optimizes the economizer
operation for additional savings over the single input
economizer.
MOTORIZED AIR DAMPER -- Includes a slid--in/plug--in
damper assembly with a rainhood and filters. The outdoor air
dampers open when the indoor fan motor is energized. The
damper is capable of providing 0% through 100% of outdoor
return air opening.
MANUAL OUTDOOR DAMPER -- Provides 0% through 35%
or 0% through 100% of return air opening (field adjustable).
Designed for duct mounted side or bottom supply/return
applications. Includes rain hood assembly and filter.
ELECTRIC HEATERS-- Include nickel chromium elements, a
terminalblock,fuses (where required by UL), all the necessary
connectorsand hardware. All heaters utilize singlepointpower
supply hookup. Capacities from 5 KW thru 30 KW heating are
available.
The dual enthalpy system contains a second sensor that
monitors the return air
describedabove for asingle enthalpy system.Thelogic module
compares these two values and modulates the dampers
providing the maximum efficiency of the economizer system.
Theeconomizeris completely installed and wired at the factory.
Only the outdoor air hood, including its filters, need be
assembled and installed in the field.
BELT-DRIVE BLOWERS - Adjustable belt-drive blowers,
providing maximum flexibility to handle many airflow
requirements, are available on all models.
FUSE BLOCK KITS -- These kits have a fuse box with a fuse
block and fuses. They're available for all 460--3--60 volt
heaters and 208/230--3--60 volt heaters 7 KW and smaller.
ROOF CURB -- This 14" high full perimeter roof curb is
knocked down for field assembly and contains duct supports
thatcan easilybeshifted forthedesired unitductarrangement.
No deck is required because the unit underside is insulated.
START ASSIST KIT (Standard on 4 ton units) -- Provides
increased starting torque for 3 and 5 ton single phase units in
areas with low voltage conditions. It contains a 12.5 OHM
PTCR temperature resistor with a support clip and hardware
for mounting.
ANTI--RECYCLE TIMER -- A timer to prevent the unit
compressor from short cycling. It assures 5 minutes off time
between compressor cycles.
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. To obtain
maximum economizer operating savings, a two stage cooling
thermostat should be used. To obtain two stage cooling
operation, a jumper wire must be removed on the low voltage
relay board. (See unit wiring diagram.)
OUTDOOR THERMOSTAT -- A 24--volt thermostat providing
two stages of control for units equipped with supplemental
electric heaters.
in addition to monitoring the outdoor air
18Unitary Products Group
036-21564-002-A-0404
TYPICAL APPLICATIONS
ROOF JACK
INSTALLATION
ROOF CURB
INSTALLATION
SLAB ON GROUND
INSTALLATION
FIELD-SUPPLIED
DISCONNECT
SWITCH
CONDENSATE
TRAP
TYPICAL ROOF-TOP INSTALLATION
ROOF CURB
SUPPLYAIR
DUCT
TO
POWER
SUPPLY
CONTROL WIRING
TO INDOOR
THERMOSTAT
RETURN AIR
DUCT
Unitary Products Group19
GENERAL DESCRIPTION
036-21564-002-A-0404
MECHANICAL SPECIFICATIONS
Units shall be factory--assembled, single packaged Heat
Pumps, designed for outdoor mounted installation. Units shall
have minimum SEER ratings of 10.0. They shall have built in
field convertible duct connections for down discharge
supply/return or horizontal discharge supply/return, and be
available with factory installed options or field installed
accessories.
The units shall be factory wired, piped, charged with R--22
refrigerant and factory tested prior to shipment. All unit wiring
shallbe both numbered and color coded.Enclosedin each unit
shall be a factory test log sheet consisting of the unit tested
pressures, temperatures and amps, as tested prior to
shipment.
Allunits shall be manufactured in a facility certifiedtoISO9001
standards, and the cooling & heating performance shall be
rated in accordance with DOE and ARI test procedures. Units
shall be listed under UL 1995/CAN/CSA No. 236--M90
conditions.
UNIT CABINET
1. Unit cabinet shall be constructed of G90 galvanized
steel, with exterior surfaces coated with a non--chalking,
powered paint finish, certified at 750 hours salt spray test
per ASTM--B117 standards.
2. Indoor blower section shall be insulated with up to 1"
thick insulation, coated on the air side. Aluminum foil
faced insulation shall be used in the furnace compartment and be fastened with ridged fasteners to prevent insulation from entering the air stream.
3. Cabinet panels shall be “large” size, easily removable for
servicing and maintenance.
4. Full perimeter base rails shall be provided to assure reliable transit of equipment, overhead rigging, fork truck ac
cess and proper sealing on roof curb applications.
5. Disposable 1" filters shall be furnished and be accessible
through a removable access door, sealed air tight. Units
filter track shall be designed to accommodate either 1" or
2" filters.
6. Fan performance measuring ports shall be provided on
the outside of the cabinet to allow accurate air measure
ments of evaporator fan performance without removing
panels or creating air by--pass of the coils.
7. Units vertical discharge and return duct configuration
shall be designed to fit between standard 24" O.C.
beams without modification to building structure, duct
work and base unit.
8. Condensate pan shall be internally sloped and conform
to ASHARE 62--89 self--draining standards. Condensate
connection shall be a minimum of 3/4" I.D. female and be
a ridged mount connection.
INDOOR (SUPPLY) FAN ASSEMBLY
1. Fan shall be direct drive, multi--speed, or a factory in
stalled belt drive, adjustable--pitch motor pulley option.
Job site selected (BHP) brake horse power shall not ex
ceed the motors nameplate horse power rating, plus the
service factor. Units shall be designed not to operate
above service factor.
-
-
-
2. Fan wheel shall be double--inlet type with forward-curved blades, dynamically balanced to operate
smoothly throughout the entire range of operation.
Airflow design shall be constant air volume.
3. Bearings shall be sealed and permanently lubricated for
longer life and no maintenance.
OUTDOOR FAN ASSEMBLY
1. The outdoor fan shall be of the direct--driven propeller
type, discharge air vertically, have aluminum blades
riveted to corrosion resistant steel spider bracket and
shall be dynamically balanced for smooth operation.
2. The outdoor fan motor shall be totally enclosed with
permanently lubricated bearings and internally protected
against overload conditions.
REFRIGERANT COMPONENTS
1. Compressors:
A. Shall be fully hermetic type, direct drive, internally pro
tected with internal high--pressure relief and over tem
perature protection. The hermetic motor shall be
suction gas cooled and have a voltage range of + or -10% of the unit nameplate voltage.
B. Shall have internal isolationandsound muffling to mini-
mize vibration and noise, and be externally isolated on
a dedicated, independent mounting.
2. Coils:
A. Evaporator and condenser coils shall have aluminum
platefinsmechanically bonded to seamless internally-enhanced copper tubes with all joints brazed. Special
Phenoliccoatingshallbe availableas afactory option.
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B. Evaporator and Condenser coils shall be of the direct
expansion, draw--thru design.
3. Refrigerant Circuit and Refrigerant Safety Components
shall include:
A. Independent fixed--orifice expansion devices.
B. Filter drier/strainer to eliminate any moisture or foreign
matter.
C.Accessible service gage connections on both suction
and discharge lines to charge, evacuate, and measure
refrigerant pressure during any necessary servicing or
troubleshooting, without losing charge.
D.The refrigeration system shall provide at least 15° F of
liquid sub--cooling at design conditions.
E. Unit shall have a suction line accumulator.
4. Unit Controls:
A. Unit shall be complete with self contained low--voltage
control circuit protected by a resetable circuit breaker
fuse on the 24 volt transformer side.
B. Unit shall incorporate a lock--out circuit which provides
reset capability at the space thermostat or base unit,
should any of the following standard safety devices trip
and shut off compressor:
E. Unit shall havefreeze--protectionthermostat on evapo
rator coil.
F. Unit shall incorporate an ambient compensated, time
and temperature defrost control.
(1) -- Defrost shall be initiated on the basis of time and liq
uid line temperature.
(2)-- A50/80/110--minutetimershall activate defrostcycle
only if liquid line temperature is low enough to indicate a
heavy frost condition.
(3) -- Defrost cycle shall terminate when liquid line sensor
issatisfiedandshallhaveapositiveterminationtimeof10
minutes.
ELECTRIC HEATING SECTION
1. An electric heating section, with nickel chromium elements, shall be provided in a range of 5 thru 30 KW, offering two stages of capacity -- 16 KW and above on
208/230 volt heaters and 20 KW and above on 460 and
575 volt heaters.
2. The heating section shall have a primary limit control(s)
and automatic reset, to prevent the heating element system from operating at an excessive temperature.
3. The Heating Section assembly shall slide out of the unit
for easy maintenance and service.
4. Units with Electric Heating Sections shall be wired for a
single point power supply with branch circuit fusing
(where required).
UNIT OPERATING CHARACTERISTICS
1. Unit shall be capable of starting and cooling at 125° F
outdoor temperature, exceeding maximum load criteria of
ARI Standard 210/240.
OPTIONAL OUTDOOR AIR (Shall be made available by
either/or):
1. ELECTRONIC ENTHALPY AUTOMATIC ECONO
MIZER -- Outdoor and return air dampers that are inter
locked and positioned by a fully--modulating, spring-return damper actuator. The maximum leakage rate for
the outdoor air intake dampers shall not exceed 2%
when dampers are fully closed and operating against a
pressure differential of 0.5 IWG. A unit--mounted potenti
ometer shall be provided to adjust the outdoor and return
air damper assembly to take in CFM of outdoor air to
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meet the minimum ventilation requirement of the condi
tioned space during normal operation. During econo
mizer operation, a mixed--air temperature control shall
modulate the outdoor and return air damper assembly to
prevent the supply air temperature from dropping below
55°F. Changeover from compressor to economizer op
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eration shall be provided by an integral electronic en
thalpy control that feeds input into the basic module. The
outdoor intake opening shall be covered with a rain hood
that matches the exterior of the unit. Water eliminator/fil
ters shall be provided. Simultaneous economizer/com
pressor operation is also possible. Dampers shall fully
close on power loss.
2. DUALINPUT DIFFERENTIAL ELECTRONIC
ENTHALPY AUTOMATIC ECONOMIZER -- Outdoor and
return air dampers that are interlocked and positioned by
a fully--modulating, spring--return damper actuator. The
maximum leakage rate for the outdoor air intake
dampers shall not exceed 2% when dampers are fully
closed and operating against a pressure differential of
0.5 IWG. A unit mounted potentiometer shall be provided
to adjust the outdoor and return air damper assembly to
take in the design CFM of outdoor air to meet the
minimum ventilation requirement of the conditioned
space during normal operation. During economizer
operation, a mixed--air temperature control shall
modulate the outdoor and return air damper assembly to
prevent the supply air temperature from dropping below
55°F. Changeover from compressor to economizer
operation shall be provided by two integral electronic
enthalpy controls -- one that senses outdoor air and one
that senses indoor air. Both enthalpy sensors supply
input to the logic module which modulates both sets of
dampers for maximum economizer savings. The outdoor
intake opening shall be covered with a rain hood that
matches the exterior of the unit. Water eliminator/filters
shall be provided. Simultaneous economizer/compressor
operation is also possible. Dampers shall fully close on
power loss.
OTHER PRE--ENGINEERED ACCESSORIES AVAILABLE
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2. The compressor, with standard controls, shall be capable
of cooling down to 45° F outdoor temperature.
ELECTRICAL REQUIREMENTS
All unit power wiring shall enter unit cabinet at a single factory
provided location and be capable of side or bottom entry, to
minimize roof penetrations and avoid unit field modifications.
Separate side and bottom openings shall be provided for the
1. ROOF CURB -- 14" AND 8" high, full perimeter knock
down curb with hinged design for quick assembly.
2. MANUALOUTDOOR DAMPER -- Provides 0% through
35% or 0% through 100% outdoor air capability (field ad
justable). Designed for duct mounted side supply/return
applications. Includes a hood and a screen assembly.
3. OUTDOOR COILGUARD -- Prevents coil damage.
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control wiring.
4. BAROMETRIC RELIEF DAMPER -- Contains a rain
STANDARD LIMITED WARRANTIES
Compressor-- 5 Years
Elect. Heat. Elem.-- 5 Years
Parts -- 1 Year
Unitary Products Group21
hood, air inlet screen, exhaust damper and mounting
hardware. Used to relieve internal air pressure through
the unit during economizer operation.
5. BURGLAR BARS -- Designed to work with above
roofcurbs. Fits duct openings of curb supply and return
air openings.
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6. THERMOSTATS -- Multiple models available from
A.C.O., M.C.O., Electronic or Electrical Mechanical ver
sions.
7. ANTI--RECYCLE TIMER -- Assures 5--minute off--time
between compressor cycles.
8. ELECTRIC HEAT -- Slide--in design, provides single
point power and ranges from 5 to 30 KW.
036-21564-002-A-0404
OTHER FACTORY INSTALLED OPTIONS
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1. HIGH PERFORMANCE BELT DRIVE MOTOR
2. TECHNICOAT PHENOLIC COATED COND. COIL
3. ELECTRONIC ENTHALPY ECONOMIZER
4. DUALINPUT ELECTRONIC ENTHALPY ECONOMIZER
22Unitary Products Group
036-21564-002-A-0404
Unitary Products Group23
Unitary Products Group
5005 York Drive, Norman, Oklahoma 73069
Subject to change without notice. Printed in U.S.A.035-21564-002-A-0404
Copyright 2004 by York International Corporation. All Rights Reserved.Supersedes: 036-21564-001-A-0204
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