Unitary products group EA120 Installation Instruction
INSTALLATION
SPLIT-SYSTEM HEAT PUMPS
INSTRUCTION
CONTENTS
GENERALINFORMATION.............................3
INSTALLATION......................................5
OPERATION.......................................17
START-UP ........................................20
MAINTENANCE ....................................22
SEE THE FOLLOWING PAGE FORA COMPLETE TABLE OF
CONTENTS.
OUTDOOR UNITS
MODEL: EA120
CAUTION:READ ALL SAFETY GUIDES BEFORE YOU
START TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
035-18549-000-B-0402
TABLE OF CONTENTS
035-18549-000-B-0402
GENERAL .................................3
REFERENCE...............................3
INSPECTION...............................3
NOMENCLATURE...........................4
INSTALLATION
LIMITATIONS...............................5
LOCATION.................................5
Roof-TopLocations ......................5
GroundLevelLocations...................5
RIGGINGANDHANDLING....................6
CLEARANCES..............................6
COMPRESSORS............................7
COMPRESSOR CRANKCASE HEATER. . . . . . . . . . 7
POWERANDCONTROLWIRING ..............7
PowerWiring ...........................7
ControlWiring...........................7
WireSizing.............................8
REFRIGERANTPIPING.......................8
General Guidelines. . . . . . . . . . . . ...........8
LineSizing ............................10
ServiceValves.........................11
EXTENDINGTHESERVICEPORTS ...........11
INSTALLATION............................11
EVACUATINGANDCHARGING...............13
BALANCEPOINTSETTING..................14
OPERATION
GENERAL ................................17
SYSTEMSEQUENCEOFOPERATION.........17
CoolingOperation.......................17
HeatingOperation.......................18
DefrostCycle ..........................18
OperationBelow0ºF.....................19
EmergencyHeatOperation ...............19
START-UP
CRANKCASEHEATER......................20
PRE-STARTCHECK........................20
INITIALSTART-UP .........................20
SAFETYFEATURES........................21
SECURE OWNER’S APPROVAL . . . . . . . . . . . . . . 2 1
MAINTENANCE
CLEANING................................22
LUBRICATION.............................22
REPLACEMENTPARTS.....................22
NOTICETOOWNER........................22
LIST OF FIGURES
Fig
No.
Description Page
1 CenterOfGravity ....................6
2 TypicalRigging......................6
3 TypicalFieldWiring...................8
4 Unit Dimensions & Clearances . . . . . . . . . . 9
5 Field Piping Diagrams (Refrigerant Flow . 10
6 ExtendingTheServicePorts ..........14
7 RefrigerantFlowDiagram.............15
8 ChargingCurve.....................16
LIST OF TABLES
Tbl
No.
Description Page
1 UnitApplicationData .................5
2 PhysicalData.......................7
3 ElectricalData.......................8
4 LiquidLines........................10
5 VaporLines........................11
6 RefrigerantLineCharge..............11
2 UnitaryProductsGroup
035-18549-000-B-0402
GENERAL
These heat pump units are designed for outdoor installation on a roof or at ground level. Every unit is completely piped and wired at the factory and is shipped
ready for immediate installation. Only the liquid and
vapor lines to the indoor coil, the control wiring and the
main power wiring are required to complete the installation. Each unit is dehydrated, evacuated, leak tested
and pressure tested at 450 psig before being pressurized with a holding charge of Refrigerant-22 for shipment and/or storage.
Every unit includes a heavy-duty compressor with line
break overload protection, a suction line accumulator,
a 4-way reversing valve, 2 filter-driers, 2 expansion
valves, 2 distributors, 2 check valves, and a copper
tube/aluminum fin coil.
All controls are readily accessible for maintenance,
adjustment and service. All power and control wiring
can be routed through the front of the unit.
REFERENCE
This instruction covers the installation of the outdoor
unit. For information on the matching indoor, see PN#
035-18475-000.
Installer should pay particular attention to the words:
NOTE, CAUTION and WARNING. Notes
to clarify or make the installation easier. Cautions
given to prevent equipment damage. Warnings
are intended
are
are
given to alert the installer that personal injury and/or
equipment damage may result if the installation procedure is not handled properly.
INSPECTION
As soon as a unit is received, it should be inspected for
possible damage during transit. If damage is evident,
the extent of the damage should be noted on the carrier's freight bill. A separate request for inspection by
the carrier's agent should be made in writing. See Form
50.15-NM for more information.
THIS PRODUCT MUST BE INSTALLED IN
STRICT COMPLIANCE WITH THE
ENCLOSED INSTALLATION INSTRUCTIONS
AND ANY APPLICABLE LOCAL, STATE, AND
NATIONAL CODES INCLUDING, BUT NOT
LIMITED TO, BUILDING, ELECTRICAL, AND
MECHANICAL CODES.
All accessories come with a separate installation manual. Refer to Parts Manual for complete listing of
replacement parts on this equipment.
The above forms may be ordered from:
Standard Register
Norman, OK 73069
TOLL FREE: Tel. 877-318-9675/Fax. 877-379-7920
INCORRECT INSTALLATION MAY CREATE A
CONDITION WHERE THE OPERATION OF
THE PRODUCT COULD CAUSE PERSONAL
INJURY OR PROPERTY DAMAGE.
Unitary Products Group 3
PRODUCT NOMENCLATURE
YORK OUTDOOR SPLIT CONDENSING UNITS AND HEAT PUMPS
E
A 120 C 00 A 2 A AA 1 A
035-18549-000-B-0402
Model #
Model Number
Description
Options
E Product Category H = Air Conditioner Split System E = Heat Pump Split System
A Product Identifier
Nominal Cooling
120
Capacity
MBH
A = R-22 Standard Efficiency 2-Pipe
B = R-22 Standard Efficiency 4-Pipe
090 = 7-1/2 Ton
120 = 10 Ton
150 = 12-1/2 Ton
180 = 15 Ton
300 = 25 Ton *
360 = 30 Ton *
480 = 40 Ton *
600 = 50 Ton *
240 = 20 Ton
C Heat Type C = Cooling Only
Nominal Heating
00
Capacity
00 = No Heat Installed
A Airflow Options A = Standard Motor
2 Voltage
A Installation Options
2 = 208/230-3-60
4 = 460-3-60
A=None
B = Disconnect
AA = None
AA Additional Options
AC = Technicoated Coil
1 Product Generation 1 = 1st Generation 2 = 2nd Generation
A Product Style A=StyleA B=StyleB
*NOT AVAILABLE IN HEAT PUMP
4 UnitaryProductsGroup
035-18549-000-B-0402
INSTALLATION
LIMITATIONS
These units must be installed in accordance with all
national and local safety codes. If no local codes apply,
installation must conform with the appropriate national
codes. See Table 1 for unit application data. Units are
designed to meet National Safety Code Standards. If
components are to be added to a unit to meet local
codes, they are to be installed at the dealer's and/or
the customer's expense.
TABLE 1: UNIT APPLICATION DATA
Voltage Variation (Min/Max.)
208/230-3-60
460-3-60
Air Temperature on OUTDOOR Coil, ºF
Minimum Maximum
Cool Heat Cool Heat
40db
Air Temperature on INDOOR Coil, ºF
Minimum Maximum
Cool Heat Cool Heat
57wb
Maximum Line Lengths - 125 ft.
1.
Rated in accordance with ARI Standard 100, utilization range “A”.
2.
Below 0ºF, the control system stops the compressor and allows the electric
heat accessory to cycle at its standby capacity.
3.
Operation below this temperature is permissible for a short period of time
when a unit is required to heat the conditioned space up to 50ºF.
0db
50db
2
3
LOCATION
Use the following guidelines to select a suitable location for these units.
1. The outdoor units must be installed outside the
building. The outdoor fans are the propeller type
and are not suitable for use with duct work.
1
187/252
432/504
115db 75db
72wb 80db
The outdoor unit should not be installed in an
area where mud and/or ice could cause personal injury. Remember that condensate will
drip from the underside of the unit coils during
heat and defrost cycles and that this condensate will freeze when the temperature of the
outdoor air is below 32°F.
4. All units require certain clearances for proper operation and service. Refer to General Installation
Form 55.70-N1 for additional guidelines.
On either roof top or ground level installations, rubber
padding can be applied between the base rails and
their supports to lessen any transmission of vibration.
ROOF-TOP LOCATIONS
Be careful not to damage the roof. Consult the building
contractor or architect if the roof is bonded. Choose a
location with adequate structural strength to support
the unit.
The unit must be mounted on solid level supports. The
supports can be channel iron beams or wooden beams
treated to reduce deterioration.
A minimum of two (2) beams are required to support
each unit. The beams should: (1) Be positioned perpendicular to the roof joists. (2) Extend beyond the
dimensions of the unit to distribute the load on the roof,
(3) Be capable of adequately supporting the entire unit
weight. Refer to Figure 1 and Table 2 for load distribution and weights.
These beams can usually be set directly on the roof.
Flashing is not required.
2. The outdoor and indoor units should be installed as
close together as possible and with a minimum
number of bends in the refrigerant piping. Refer to
REFRIGERANT PIPING for additional information.
3. The outdoor unit should not be installed beneath
windows or between structures where normal
operating sounds may be objectionable.
Unitary Products Group 5
NOTE: On bonded roofs, check for special installation
requirements.
GROUND LEVEL LOCATIONS
The units must be installed on a substantial base that
will not settle. Any strain on the refrigerant lines may
cause a refrigerant leak.
035-18549-000-B-0402
A one-piece concrete slab with footers that extend
below the frost line is recommended. The slab should
not be tied to the building foundation because noise
and vibration will telegraph into the building.
A unit can also be supported by concrete piers. These
piers should: (1) extend below the frost line, (2) be
located under the unit's four corners and (3) be sized to
carry the entire unit weight. Refer to Figure 1 and Table
2 for the center of gravity and unit weight.
A gravel bed or some other means of handling the condensate that will drop from the underside of the unit coil
during the heating and defrost cycles may have to be
provided.
Care should be taken to protect the unit from
tampering and unauthorized persons from
injury. Screws on access panels will prevent
casual tampering. Additional safety precautions such as fences around the unit or locking
devices on the panels may be advisable.
Check local authorities for safety regulations.
the unit, MUST be used across the top of the unit if the
rigging height above the top of the unit is less than 5
feet. See Figure 2.
Do not use straps under the unit or through the
fork lift slots for lifting purposes. Sharp metal
edges can damage the straps and could result
in personal injury or equipment damage.
BEFORE LIFTING A UNIT, MAKE SURE THAT ITS
WEIGHT IS DISTRIBUTED EQUALLY ON THE
STRAPS SO THAT IT WILL LIFT EVENLY.
Units may also be moved or lifted with a fork-lift. Slotted openings in the base rails are provided for this purpose.
LENGTH OF FORKS MUST BE A MINIMUM OF 54"
when lifting from either side.
Remove the nesting brackets from the four corners on
top of the unit. All screws that are removed to take
these brackets off must be replaced on the unit.
FIGURE 1 - CENTER OF GRAVITY
Unit
10 Ton 76-7/8 39-7/8 38-7/8 16
ABCD
Dim. (In.)
RIGGING AND HANDLING
Exercise care when moving the unit. Do not remove
any packaging until the unit is near the place of installation.
Rig the unit by attaching nylon straps with hooks to the
lifting holes provided in the base rails. Spreaders,
whose length exceeds the largest dimension across
5 FT. MIN.
FORK-LIFT
OPENINGS
FIGURE 2 - TYPICAL RIGGING
CLEARANCES
All units require certain minimum clearances for proper
operation and service. Refer to Figure 4 for these
clearances.
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035-18549-000-B-0402
Do not permit overhanging structures or shrubs
to obstruct air discharge.
Additional height may be required for snow clearance if
winter operation is expected.
TABLE 2: PHYSICAL DATA
MODEL EA120
1
Compressor
Fans
Fan Motors
Coil
Refrigerant-22
(Lbs.)
Unit Weight
(Lbs.)
1.
These compressors are fully hermetic.
2.
These PSC motors are directly connected to the outdoor fans and have
inherent protection, ball bearings and a 48” frame.
3.
Includes outdoor unit and matched indoor blower unit, but no piping. Refer to
Table6 for refrigerantline charge.
Rating, (Tons) 10
Quantity 2
Diameter, (In.)/No. Blades 24/3
Nominal CFM 7830
HP 3/4
2
RPM 1100
Face Area, (Sq. Ft.) 36.11
Rows Deep x Rows High 2 x 40
Finned Length, (In.) 130
Tube (Copper) OD - inches 3/8
Fins (Aluminum) per inch 20
Holding Charge 2.25
Operating Charge
Shipping 970
3
31.8
COMPRESSORS
Units are shipped with compressor mountings factoryadjusted and ready for operation.
Do not attempt to start the compressor without
at least eight hours of crankcase heat or compressor damage will occur.
If a unit has just been installed or the unit disconnect
switch has been open for a long period of time, move
the system switch on the room thermostat to the “OFF”
position before closing the unit disconnect switch. Eight
hours of crankcase heat are required to drive the liquid
refrigerant out of the compressor before the compressor can be started.
POWER AND CONTROL WIRING
Install electrical wiring in accordance with the latest
National Electrical Code (NFPA Standard No. 70) and/
or local regulations. The unit should be grounded in
accordance with these codes.
POWER WIRING
Check the voltage of the power supply against the data
on the unit nameplate. Check the size of the power
wire, the disconnect switch and the fuses against the
data on Table 3.
NOTE: Copper conductors must be installed between
the disconnect switch and the unit.
Refer to Figure 4 for the location of the power wire
access opening through the front of the unit. This opening will require a field-supplied conduit fitting.
The field-supplied disconnect switch must be suitable
for an outdoor location. Although it should be installed
near the unit, do NOT secure it to the unit cabinet.
Refer to Figure 3 for typical field wiring.
Do Not loosen compressor mounting bolts.
COMPRESSOR CRANKCASE HEATER
The compressor is equipped with a crankcase heater
to prevent refrigerant from mixing with crankcase oil
during the “OFF” cycle. The heaters will be energized
when the compressor is not running providing the unit
disconnect switch is closed.
Unitary Products Group 7
CONTROL WIRING
Refer to Figure 4 for the location of the control wire
access opening through the front of the unit.
Route the necessary low voltage control wires from terminal block 1TB of the unit control box through this
access opening to the indoor unit and to the room thermostat. Refer to Figure 3 for typical field wiring.
The room thermostat should be mounted about 5 feet
above the floor and located where it will be exposed to
normal room air circulation. Do not locate it on an outside wall, near a supply air grill, or where it may be
affected by sunlight and/or drafts. Circulation of air to
the thermostat should not be blocked by curtains,
drapes, furniture, partitions, etc.
035-18549-000-B-0402
Some installations may require a locking cover to protect the thermostat from tampering and/or damage.
RECOMMENDED
WIRE SIZE
#19 Solid
#18 Solid
#18 Stranded
#16 Stranded
#14 Stranded
#12 Stranded
*To determine the total circuit length, add the following distances:
1 - Outdoor Unit to Indoor Unit....................... _________
2 - Indoor Unit to Thermostat......................... _________
3 - Thermostat to Indoor Unit......................... _________
4 - Indoor Unit to Outdoor Unit....................... _________
Total Circuit Length .... _________
MAXIMUM TOTAL
CIRCUIT LENGTH - FT.*
130
170
180
270
455
730
Both the manual and the auto changeover thermostats
have non-adjustable, voltage-type anticipators for both
cooling and heating.
WIRE SIZING
Refer to the following chart to size the control wiring
properly. If the wiring is undersized, voltage drop could
become excessive and result in malfunctioning of the
unit controls.
REFRIGERANT PIPING
GENERAL GUIDELINES
Many service problems can be avoided by taking adequate precautions to provide an internally clean and
dry system and by using procedures and materials that
conform with established standards.
FIGURE 3 - TYPICAL FIELD WIRING
TABLE 3: ELECTRICAL DATA
Model
EA
25 200/230-3-60 42.0 239.0
120
46 460-3-60 19.2 125.0 0.86 460-1-60 2 1.6 27.2 45 8
1.
Basedonthree,50ºC insulated copper conductors in steel conduit.
Power
Supply
8 UnitaryProductsGroup
Compressor Outdoor Fan Motor Min.
RLA LRA
Power
Factor
0.94 @ 208V
0.84 @ 230V
Power
Supply
208/230-1-60 2 3.03 58.6 100 6
Qty.
FLA
(Each
Circuit
Amps
Max.
Fuse
Size
Min. Wire
Size,
AWG
1
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