York H3CE180 User manual

GENERAL
These condensing units are designed for outdoor installation
on a roof or at ground level.Every unit iscompletely piped and
wired at the factory and is shipped ready for immediate instal-
lation. Only the liquid and suction lines to the evaporator coil,
the filter drier, 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.
All controls are located in the front of the unit and are readily
accessible for maintenance, adjustment and service.All wiring
(power and control) can be made through the front of the unit.
REFERENCE
This instruction covers the installation and operation of the
basic condensing unit. For information on the installation and
operation of the evaporator blower units, refer to instruction
Form 550.23-N4Y.
All accessories come with a separate Installation Manual.
Refer to Parts Manual for complete listing of replacement parts
on this equipment.
All forms may be ordered from:
Publications Distribution Center
Unitary Products Group
P.O. Box 1592, York, Pa. 17405
INSPECTION
As soonasaunitis received,itshouldbeinspectedfor possible
damage during transit. If damage is evident, the extent of the
damage should be noted on the carrier’s freight bill.Aseparate
request for inspection by the carrier’s agent should be made in
writing.
SPLIT-SYSTEM
CONDENSING UNITS
(AIR COOLED)
INSTALLATION INSTRUCTION Supersedes: 550.23-N6Y (398) 550.23-N6Y (998)
Installer should pay particular attention to the words: NOTE, CAUTION and WARNING . Notes are intended to clarify or make
the installation easier.Cautions are given to prevent equipment damage.Warnings are given to alert installer that personal injury
and/or equipment damage may result if installation procedure is not handled properly.
MODELS H3CE180 & 240 035-15470
®
O
O
O

General ................................................................................ 1
Reference............................................................................. 1
Inspection............................................................................. 1
Nomenclature....................................................................... 2
INSTALLATION
Limitations............................................................................ 3
Location ............................................................................... 3
Roof-Top Locations....................................................... 3
Ground Level Locations................................................ 3
Rigging and Handling .......................................................... 3
Clearances........................................................................... 4
Power and Control Wiring.................................................... 4
Power Wiring................................................................. 4
Control Wiring............................................................... 4
Compressor Crankcase Heater........................................... 4
Refrigerant Piping................................................................ 7
General Guidelines....................................................... 7
Line Sizing.................................................................... 7
Service Valves .............................................................. 7
Installation............................................................................ 9
Extending The Service Ports ............................................... 9
Evacuation and Charging .................................................... 9
START-UP
Crankcase Heater.............................................................. 11
Pre-Start Check ................................................................. 11
Initial Start-Up.................................................................... 11
OPERATION
First Stage Cooling ............................................................ 11
Anti-Short Cycle Timer Delay 3TR & 4TR ......................... 11
Compressor Control Module.............................................. 11
Low or High Pressure Lock Out Operation........................ 11
Resetting the Lock Out ...................................................... 12
Second Stage of Cooling................................................... 12
Low Ambient Cooling......................................................... 12
Safety Features.................................................................. 12
Secure Owner’s Approval .................................................. 12
Maintenance ...................................................................... 12
Cleaning Condenser Surface............................................. 13
Lubrication ......................................................................... 12
Compressor Replacement................................................. 12
TABLES
No. Description Page
1 Unit Application Data.................................. 3
2 Physical Data.............................................. 4
3 Electrical Data............................................. 5
4 Suction Lines .............................................. 7
5 Liquid Lines................................................. 8
6 Refrigerant-22 Line Charge........................ 8
7 Cooling Cap. and Power Requirements..... 8
FIGURES
No. Description Page
1 Center of Gravity......................................... 3
2 Typical Rigging............................................ 4
3 Typical Field Wiring..................................... 5
4 Unit Dimensions and Clearances............... 6
5 Point Loads................................................. 6
6 Extending the Service Ports....................... 10
7 Charging Curve for HCE180....................... 11
8 Charging Curve for HCE240....................... 11
H 3 C E 2 58 A
PRODUCT NOMENCLATURE
PRODUCT GENERATION
3 = 3rd Generation
PRODUCT CATEGORY
H = Split-System Condensing Unit
PRODUCT IDENTIFIER
CE = Condensing Section
VOLTAGE CODE
25 = 208/230-3-60
46 = 460-3-60
58 = 575-3-60
NOMINAL COOLING
CAPACITY
180 = 15 Tons
240 = 20 Tons
FACTORY INSTALLED HEAT
A = Not Applicable
1 0
TABLE OF CONTENTS
550.23-N6Y
2Unitary Products Group

LIMITATIONS
These units must be installed in accordance with all national
and local safety codes.If no local codesapply, 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.
LOCATION
Use the following guidelines to select a suitable location for
these units.
1. The condensing unit is designed for outdoor installation
only.The condenser fans are the propeller type and are not
suitable for use with duct work.
2. The condensing unit and the evaporator blower 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 condensing unit should not be installed where normal
operating sounds may be objectionable. On either rooftop
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 contrac-
tor or architect if the roof is bonded. Choose a location with
adequate structural strength to support the unit.
The condensing 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)Extendbeyondthedimensionsoftheunittodistribute
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.
NOTE: Onbondedroofs,checkforspecialinstallationrequire-
ments.
GROUND LEVEL LOCATIONS
The units must be installed on a one-piece level concrete slab
with a minimum thickness of 4 inches. The length and width
should be at least 6 inches greater than the units overall base
dimensions.Refer to Figure 4.
Footers under the slab that extend below the frostline are recom-
mended.Anystrainontherefrigerantlinesmaycausearefrigerant
leak.Theslabshouldnotbetiedtothebuildingfoundationbecause
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.
CAUTION: Care should be taken to protect the unit from
tampering and unauthorized persons from injury.
Screws on access panels will prevent casual tam-
pering. Additional safety precautions such as
fences around the unit or locking devices on the
panels may be advisable. Check local authorities
for safety regulations.
RIGGING AND HANDLING
Exercise care when moving the unit.Do not remove any pack-
aging until the unit is near the place of installation.
Rig the unit by attaching chain or cable slings with hooks to the
round lifting holes provided in the base rails.
CAUTION: Spreaders, longer than the largest dimension
across the unit,
MUST
be used across the top of
the unit.
WARNING:BEFORELIFTINGAUNIT,MAKESURETHATITS
WEIGHT IS DISTRIBUTED EQUALLY ON THE
CABLES SO THAT IT WILL LIFT EVENLY.
Units may also be moved or lifted with a fork-lift from the front,
rear or the compressor end only through the slotted openings
provided in the base rails.
CAUTION: LENGTH OF FORKS MUST BE A MINIMUM OF
54" (when lifting from the compressor end of the
unit) and a MINIMUM OF 42" (when lifting from the
front or rear of the unit).
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.
INSTALLATION
MODEL 180 & 240 MBH
Voltage Variation1
Min./ Max.
208/230-3-60 187 / 252
460-3-60 432 / 504
575-3-60 540 / 630
Ambient Air on
Condenser Coil
Min./ Max.
Standard 35°F / 115°F
with Head Pressure
Control 0°F / 115°F
1.Utilization Range "A" in ARI Standard 110.
2. The minimum allowed ambient temperature for mechanical cooling without the head pres-
sure control accessory installed must be raised if the indoor air flow is less than the mini-
mum value given in the capacity tables.
TABLE 1 - UNIT APPLICATION DATA
FIG. 1 - CENTER OF GRAVITY
Unit Dim. (in.)
AB
180 Mbh 16 32
240Mbh 16 32
550.23-N6Y
Unitary Products Group 3

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.
CLEARANCES
All units require certain minimum clearances for proper opera-
tion and service.Refer to Figure 4 for these clearances.
WARNING:Do not permit overhanging structures or shrubs to
obstruct condenser air discharge.
Additional height may be required for snow clearance if winter
operation is expected.
POWER AND CONTROL WIRING
Install electrical wiring in accordance with the latest National
Electrical Code (NFPA Standard No. 70) and/or local regula-
tions. 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 discon-
nect 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.
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 (18 AWG min.)
from the TB1 terminal block inside of the unit control box
throughthis access opening to the room thermostat and to the
evaporator blower motor controller.
The room thermostat should be located on an inside wall
approximately 56" above the floor where it will not be subject
to drafts, sun exposure or heat from electrical fixtures or
appliances. Follow manufacturer’s instructions enclosed with
thermostat for general installation procedure.
Refer to Figure 3 for typical field wiring.
COMPRESSOR CRANKCASE HEATER
Thecompressorisequippedwithacrankcaseheatertoprevent
refrigerant from mixing with crankcase oil during the “OFF”
cycle.The heater will be energized when the compressor is not
running providing the unit disconnect switch is closed.
CAUTION: Do not attempt to start the compressor without at
least eight hours ofcrankcase heat or compressor
damage can occur.
Ifaunithasjustbeeninstalled ortheunitdisconnectswitchhas
been open for a long period of time, move the system switch
ontheroomthermostattothe“OFF”positionbeforeclosingthe
unitdisconnectswitch.Uptoeighthoursofcrankcase heatcan
be required to drive the liquid refrigerant out of the compressor
before the compressor can be started.
SPREADER
BAR
LIFTING
HOLES
WARNING
BEFORE LIFTING UNIT,
MAKE SURE THAT ITS
WEIGHT IS DISTRIB-
UTED EQUALLY ON THE
CABLES SO THAT IT
WILL LIFT EVENLY.
FIG. 2 - TYPICAL RIGGING
Model
Size
(Mbh)
Compressor1Condenser Unit Weight
(Lbs.) Charge,
(Refrigerant-22)
Lbs.-Oz.
24" Fan (Propeller) Fan Motor2Coil
Rating
(Tons) Cap. (Stg’s.) Qty. Blades/
Pitch
(Deg.) Nom.
CFM Qty. HP RPM Rotation Fins
per
inch Rows
Deep Ship. Oper. Holding3Oper.4
180 15 2 2 3/32 10,800 2 1 1100 CCWLE 20 2 920 930 1 - 0 24 - 12
240 20 2 2 3/32 11,300 2 1 1100 CCWLE 20 2 970 990 1 - 0 32 - 13
1Compressor set consists of two Copeland scroll compressors manifolded into a single refrigerant circuit.
2 The ball bearing, 48 frame, single phase condenser fan motor have internal protection are directly connected to the condenser fans.
Motor rotation is counterclockwise when viewing the lead end,which is opposite the shaft end.
3 Holding charge is the amount in the unit as shipped from the factory.
4 Operating refrigerant charge is for the condensingunit and the matching York air handler, but does not include the charge in the interconnecting piping.
See the Refrigerant Line Charge Table to determine the additional refrigerant charge required for interconnecting piping.
TABLE 2 - PHYSICAL DATA
550.23-N6Y
4Unitary Products Group

FIG. 3 - TYPICAL FIELD WIRING
COND.
SECTION
L1 L2 L3
RCXY1
TB1
TB4
DISCONNECT SW ITCHES
AND FUSING BY FIELD
LIQ U ID LIN E
SOLENO ID VALVES
GROUND LUG (FOR
GROUND W IRE
IF R E Q U IR E D )
THERM O STAT
2TH 04701224
3 SO L
2 SO L
EVAPORATO R
BLO W ER M O TOR
CONTACTOR
RC Y2 Y1 G
24V
COND.
SECTIO N
L1 L2 L3
RY2 Y1 C
TB4
DISCONNECT SW ITCHES
AND FUSING BY FIELD
3-PHASE
LIN E V O LTAG E
POW ER SUPPLY
GROUND LUG (FOR
GROUND W IRE
IF R E Q U IR E D )
THERM O STAT
2TH 04701224
EVAPORATO R
BLO W ER M O TOR
CONTACTOR
RC Y2 Y1 G
24V
X
L
L
Y2
COM PRESSOR 24V
LOCKOUT SIGNAL
2V A M A X .
COM PRESSOR 24V
LOCKOUT SIGNAL
2V A M A X .
N O TE : 2 S O L M AY N O T B E
PRESENT O N N EW ER
AIR HANDLERS.
H 3C E 180/K 1E U 180
H3CE240/L3EU240
3-PHASE
LIN E V O LTAG E
POW ER SUPPLY
3-PHASE
LIN E V O LTAG E
POW ER SUPPLY
3-PHASE
LIN E V O LTAG E
POW ER SUPPLY
W IRE IN ACCORDANCE W ITH ALL LOCAL
AND NATIO N AL ELEC TR IC AL CO D ES.
FIELD W IRING:
LO W VO LTAG E C LASS 2 W IRIN G
LINE VO LTAG E CLASS 1 W IRIN G
TB1
C
1
2
24V
Compressor Condenser Fan Motor Unit
Model Unit Power
Supply Qty RLA LRA Qty HP/ Kw FLA
Minimum
Circuit
Ampacity
(Amps)
Maximum
Fuse
Size1
(Amps)
Minimum
Disconnect
Size2
(Amps)
H3CE150A50 380/415 2 27.8 198 2 1/.75 2.2/2.0 35.7 45 60
H2CE180A50 380/415 2 36.8 254 2 1/.75 4.0/3.6 49.4 60 60
H3CE240A50 380/415 2 42.7 294 2 1/.75 4.0/3.6 56.8 80 60
1. Dual element, time delay type fuses or HACR circuit breakers.
2. Refer to NEC/NFPA No. 70, Articles 440-11,12 for information on minimum disconnect sizing.
3. The 208-230 V compressors and motors use a single tap for the entire range of voltages.
The 208/230 V to 24 V transformers have different taps for 208 and 230 V.
TABLE 3 - ELECTRICAL DATA
550.23-N6Y
Unitary Products Group 5

FIG. 4 - UNIT DIMENSIONS AND CLEARANCES
CLEARANCES
Overhead (Top)1120"
Front
(Piping and Access Panels) 30"
Left Side 24"
Right Side 24"
Rear 24"
Bottom20"
1Units must be installed outdoors. Overhanging structures
or
shrubs should not obstruct condenser air discharge.
2Adequate snow clearance must be provided if winter
FRO N T
16
39 -7/8
BACK
(COILEND)
APPROXIM ATE
CENTER OF GRAVITY
32
76 -7/8
AIR
OUT
AIR
OUT
AIR
IN
O
O
O5-3/4
44-9/32
FAN M O TO R
ACCESS
COMPRESSOR
AND
FAN M OTOR ACCESS
EXTERNAL PRESSURE
G AUG E FITTIN G S CONTROL BOX
ACCESS
9-1/32
76-7/8
7-1/32
39 -7/8
13-1/4
30-3/4
24-1/2
12-1/8
C
D
F
E
F
E
F
A
B
All dimensions are in inches.They are sub-
ject to change without notice. Certified di-
mensions will be provided upon request.
D
B
C
A
FIG. 5 - POINT LOADS
UNIT 4 - POINT LOAD (LBS)
TOTAL A B C D
180
240 930 990 325 346 218 232 155 165 232 247
Connection
Entry Connection Size
15 Ton 20 Ton
Suction Line A 1-5/8 ID 2-1/8 ID
Liquid Line B 5/8 OD 5/8 OD
Power Wiring C 2-1/8 KO 2-1/8KO
Control Wiring D 7/8 KO 7/8 KO
Accessory Wiring E 7/8 KO 7/8 KO
Accessory Wiring F 1-3/8 KO 1-3/8 KO
NOTE: Suction line connection is a belled
fitting.
550.23-N6Y
6Unitary Products Group

REFRIGERANT PIPING
GENERAL GUIDELINES
Many service problems can be avoided by taking adequate pre-
cautionstoprovideaninternallycleananddrysystemandbyusing
proceduresandmaterialsthatconformwithestablishedstandards.
Use hard drawn copper tubing where no appreciable amount
of bending around pipes or other obstructions is necessary.
Use long radius ells wherever possible with one exception—
short radius ells for the traps in all suction risers.If soft copper
is used, care should be taken to avoid sharp bends which may
cause a restriction.
Pack fiber glass insulation and a sealing material such as
permagumaroundrefrigerantlineswheretheypenetrate awall
to reduce vibrations and to retain some flexibility.
Support all refrigerant lines at minimum intervals with suitable
hangers, brackets or clamps.
Braze all copper to copper joints with Silfos-5 or equivalent
brazing material.Do not use soft solder.
Insulate all suction lines with a minimum of 1/2" ARMAFLEX or
equal. Liquid lines exposed to direct sunlight and/or high tem-
peratures must also be insulated.
Never solder suction and liquid lines together.They can be taped
together for convenience and support purposes, but they must be
completely insulated from each other.
A filter-drier MUST be installed in the liquid line of every system
to prevent dirt and moisture from damaging the system. A prop-
erly-sized filter-drier is shipped with each condensing unit for field
installation near the evaporator coil. The filter-drier is shipped
inside the unit control box.
NOTE: Installing a filter-drier does not eliminate the need for
theproperevacuationof asystembeforeitischarged.
A moisture indicating sight-glass may be field installed in liquid
line(s) between the filter-drier and the evaporator coil. The
moisture indicatingsight-glass canbeusedtocheckfor excess
moisture in the system or used as visual means to verify
refrigerant charge.
LINE SIZING
When sizing refrigerant lines for a split-system air conditioner,
check the following:
1.Suction line pressure drop due to friction at full capacity,
2.Liquid line pressure drop due to friction at full capacity,
3.Suction line velocity for oil return at part capacity, and
4.Liquid line pressure drop due to static head.
NOTE: Never base refrigerant line sizes on the OD of the
suction and liquid connections on the unit.
Tables 4 and 5 list friction losses for both the suction and liquid
lines on the system. Table 6 shows the amount of refrigerant
charge required per foot of refrigerant line.
When the evaporator coil is below the condensing unit, the
suction line must be sized for both pressure drop and for oil
return. For certain piping arrangements, different suction line
sizes may have tobe used.The velocityof the suctiongas must
always be great enough to carry oil back to the compressor.
When the condensing unit is below the evaporator coil, the
liquid line must be designed for the pressure drop due to both
friction loss and vertical rise.If the total pressure drop exceeds
40 psi,somerefrigerantmayflashbeforeitreachesthethermal
expansion valve.This flashing will not only cause erratic valve
operation and poor system performance, but could also dam-
age the expansion valve.
SERVICE VALVES
These condensing units have service valves on the compres-
sor suction lineandon theliquidlineleavingthecondensercoil.
The liquid and suction line service valves are shipped from the
factory front-seated and closed with the valve stem in the
maximum clockwise position.
The liquid and suction line service valves have a 1/4" male flare
access port for evacuating, charging and pressure checking the
system.
NOTE: Never remove a cap from an access port unless the
valve is fully back-seated with its valve stem in the
maximum counter-clockwise position because the re-
frigerant charge will be lost.ALWAYS USE A REFRIG-
ERATION VALVE WRENCH TO OPEN AND CLOSE
THESE SERVICE VALVES.
Model
Designation Nominal
Capacity
(Tons)
Refrigerant
Flow Rate3
(Lbs./Min.)
Type L
Copper Tubing
(Inches O.D.)
Refrigerant
Gas
Velocity
(FT./Min.)
Friction
Loss4,5
(PSI/100 Ft.)
180 Mbh
Full
Capacity 15 45 1-5/8 2-1/8 2300 1360 2.5 0.6
Part
Capacity 8-1/2 25.5 1-5/8 2-1/8 1150 77060.7
0.2
240 Mbh
Full
Capacity 20 60 1-5/8
2-1/8
2-5/8
3120
1800
1200
4.3
1.2
0.4
Part
Capacity 10 30 1-5/8
2-1/8
2-5/8
1560
9006
6006
1.2
0.3
0.1
1All horizontal suction lines should be pitched at least 1 inch every 20 feet in the direction of the refrigerant flow to aid the return of oil to the compressor.
2Every vertical suction riser greater than 25 feet in height should have a “P” trap at the bottom to facilitate the return of oil to the compressor.Use short radius fittings for these traps.
3Based on Refrigerant-22 at the nominal capacity of the condensing unit, a suction temperature of 40°F and a liquid temperature of 105°F.
4Although suction lines should be sized for a friction loss equivalent to a 2°F change in saturation temperature (or approximately 3 psi), sizing the lines for the proper return of oil
is more important.
5These friction losses do not include any allowances for valves or fittings.
6Since the refrigerant gas velocity may be too low to maintain good oil return up a vertical riser, use the next smaller size. The larger size may be used for horizontal runs for a smaller
pressure drop.
TABLE 4 - SUCTION LINES 1,2
550.23-N6Y
Unitary Products Group 7

NOTE:Add the operating charge of the condensing unit, the evaporator coil and
the refrigerant lines to determine the total refrigerant charge of the system.
1Charges are based on 40°F suction temperature and a 105°F liquid temperature.
2Type “L” copper tubing.
Model
Designation Nominal
Capacity
(Tons)
Refrigerant
Flow Rate1
(Lbs./Min.)
Type L
Copper Tubing
(Inches O.D.)
Pressure Drop3
Friction2
(PSI/100 Ft.) Vertical
Rise
(PSI/Ft.)
180 Mbh 15 45 3/4
7/8 4.7 2.2 0.5
240 Mbh 20 60 3/4
7/8 8.0 3.5 0.5
1Based on Refrigerant-22 at the nominal capacity of the condensing unit, a liquid temperature of 105°F and a suction temperature of 40°F.
2These friction losses do not include any allowances for a strainer, filter-drier, solenoid valve, isolation valve or fittings.
3The total pressure drop of the liquid line for both friction and vertical rise must not exceed 40 PSI.If the pressure drop exceeds 40 PSI, the liquid refrigerant could flash before it reaches the
expansion valve.This flashing will not only cause erratic valve operationand poor system performance, but could also damage the expansion valve.
TABLE 5 - LIQUID LINES
Liquid Line2
Inches, O.D. 5/8 0.113 lb./ft.
7/8 0.237 lb./ft.
Suction Line2
Inches, O.D.
1-5/8 0.018 lb./ft.
2-1/8 0.031 lb./ft.
2-5/8 0.047 lb./ft.
TABLE 6 - REFRIGERANT-22 LINE CHARGE1
Compressor Suction Ambient Temperature Enterin
g
Condenser Coil
(
°F
)
Model 65758595105115
Pressure
(
psi
g)
Saturated
Temp
(
°F
)
MBH1kW2MBH kW MBH kW MBH kW MBH kW MBH kW
54.9 30 165 12.3 157 13.4 150 14.8 142 16.3 134 18.1 126 19.9
61.6 35 181 12.5 172 13.6 164 15.0 156 16.5 147 18.3 138 20.2
180 68.5 40 196 12.7 188 13.9 179 15.3 170 16.7 160 18.6 151 20.4
76.0 45 212 12.9 204 14.1 194 15.5 184 17.0 174 18.9 164 20.8
84.0 50 231 13.2 220 14.3 210 15.8 199 17.3 188 19.1 177 21.0
54.9 30 228 17.3 217 19.2 206 21.1 195 23.4 183 25.9 172 28.5
61.6 35 248 17.7 237 19.6 225 21.5 213 23.8 200 26.4 188 29.0
240 68.5 40 269 18.1 257 20 244 21.9 231 24.3 218 26.9 204 29.6
76.0 45 291 18.5 277 20.5 264 22.4 250 24.8 236 27.5 222 30.3
84.0 50 313 19.0 299 21 284 23.0 269 25.3 254 28.1 239 30.9
1. Capacities are
g
ross ratin
g
s.
2. Pow er is for the condensin
g
unit onl
y
.
TABLE 7 - CONDENSING UNIT COOLING CAPACITIESAND POWER REQUIREMENTS
550.23-N6Y
8Unitary Products Group

EXTENDING THE SERVICE PORTS
(see Fig. 6)
1. Loosenthescrewsthatsecuretheserviceportsinshipping
position.
2. Push the service ports through the corner post.
3. Tighten the screws to secure the service ports for installa-
tion.
INSTALLATION
Since the condensing units are shipped with a holding charge
of refrigerant-22, they can be checked for a refrigerant leak by
depressing the stem on either of the service ports that extend
through the cabinet. As soon as some internal pressure is
relieved release the stem. DO NOT release the entire holding
charge.
If the unit has already lost its holding charge, it should be leak
tested and the necessary repairs should be made. If the unit
has maintained its holding charge, you can assume that it has
no leaks and proceed with the installation.
CAUTION: Dry nitrogen should always be supplied through a
connection while it is being brazed or unbrazed
because the temperature required to make or
break a brazed joint is sufficiently high to cause
oxidation of the copper unless an inert atmosphere
is provided.The flow of nitrogen should be contin-
ued until the joint has cooled.
When making a braze connection, wrap a wet rag
around all tubing inside the unit to help prevent
damage to other components.
WARNING:The dry nitrogen should always be supplied
through a pressure regulating valve.
Beforeinstallingtheliquidlinebetweenthecondensingunitand
the evaporator coil, prepare as follows:
1. Burnish the external surfaces of the liquid connection on
the condensing unit and the end ofthe field-suppliedpiping
for the liquid line.
NOTE: Clean surfacesareessentialforawell-brazedcon-
nection.
2. Carefully clean the internal surfaces of the above. Any
particles left on these surfaces may lead to a future system
malfunction.
NOTE: Use only copper tubing that has been especially
cleaned and dehydrated for refrigerant use. If the
tubing has been open for an extended period of
time, it should be cleaned before being used.
The liquid line connections can now be brazed while maintaining
a minimum flow of dry nitrogen through the piping as follows:
1. Remove the cap from the 1/4" access port on the liquid line service
valve.
2. Connect a supply of dry nitrogen to this access port.
NOTE: The filter-drier should be installed in the liquid line
as close to the evaporator coil as possible.
Do not allow the filter-drier to be exposed to the
atmosphere for an extended period of time. Once
it absorbs moisture from the atmosphere, it loses
its effectiveness.
ThematchedairhandlersareshippedwithasmallR-22charge
and the should be checked for leaks before installation.
1. Drill a small hole through the sealing cap or disc in both the
liquidandsuctionconnection. Ifthereisapressurerelease,
the evaporator has no leaks and you can proceed with
installation. If the charge has been lost,the coilsshouldbe
leak tested and the necessary repairs made
2. Move the dry nitrogen supply from the access port on the
liquid line service valve of the condensing unit to the hole
through the suction disc on the evaporator coil.
3. Unbraze the coil’s liquid line disc while maintaining a flow
of dry nitrogen across the connection and through the hole
in the liquid line disc.
NOTE: If the liquid line has a solenoid valve, the valve
should be opened manually to permit the nitrogen
to flow freely.
4. After the disc has been removed, burnish the external
surfaces and clean the internal surfaces as outlined above.
5. Move the dry nitrogen supply back to the access port on
the liquid line service valve.
6. Braze the liquid line to the liquid connection on the evapo-
rator coil while maintaining a minimum flow of dry nitrogen
through the liquid line, the evaporator coil and the hole in
the suction disc.
7. Unbraze the disc on the suction connection of the evapo-
rator coil while maintaining the flow of dry nitrogen.
8. After the disc has been removed, burnish the external
surfaces and clean the internal surfaces as outlined above.
Thesuctionpipingcannowbebrazedtothesuctionconnection
on the evaporator coil while maintaining a minimum flow of dry
nitrogen.
Before brazing the suction line to the condensing unit;
1. Move the dry nitrogen supply to the access port on the
suction service valve of the condensing unit.
2. Burnish the external surfaces and clean the internal sur-
faces of both the suction connection and the suction piping.
The suction line can now be brazed to the suction connection
on the condensing unit while maintaining the flow of dry nitro-
gen.
After the liquid and suction lines have been installed, the
system should be evacuated and charged.
EVACUATION AND CHARGING
With the liquid and suction line service valves closed, connect
a vacuum pump through a charging manifold to the access
ports on both the liquid and suction line service valves.
NOTE: The vacuum pump connection should be short and
no smaller than 3/8" O.D.
Therefrigerantlinesandtheevaporatorcoilcannowbeevacu-
ated to 500 Microns without disturbing the charge in the con-
denser coil or the compressor.
After proper evacuation and dehydration, charge refrigerant
through the access port on the liquid line service valve allowing
the vacuum to draw in as much refrigerant as possible.
CAUTION: Do not charge liquid refrigerant through the com-
pressor suction connection.
CAUTION: Do not attempt to start the compressor without at
least 8 hours of crankcase heat or compressor
damage will occur.
Tocontinue chargingrefrigerant,opentheliquidandthesuction
line service valvesfully. Turnthestem oftheliquidservicevalve
clockwise 1/4turn to open its access port for reading pressure.
Startthe compressor (after8hoursofcrankcase heat),turnthe
stem ofthe suction line service valveclockwise 1/4turnto open
its service port and continue to charge refrigerant gas through
this suction access port until you meet the conditions shown
on the charging curve, Fig. 7.
Open the liquid and vapor line service valves fully to close their
access ports after the system has been charged.
550.23-N6Y
Unitary Products Group 9

COPPER
2 S C R EW S
CORNER
POST
SERVICE PORTS IN SHIPPING PO SITION
UNIT W ALL
SIDE VIEW
CO PPER
TUBE
UNIT
WALL
COPPER
2SCREW S
CORNER
POST
TOP VIEW
UNIT
WALL
LO O SEN
SCREW S
SIDE VIEW
(AS SHIPPED)
PUSH SERVICE
PORTS THROUGH
CORNER POST
TIGHTEN SCREW S
SIDE VIEW
SERVICE PORTS
EXTENDED
( )
SERVICE PORTS
EXTENDED
( )
SERVICE PORTS IN INSTALLED PO SITION
FIG. 6 - EXTENDING THE SERVICE PORTS
Alternate Charging Methods
Ifyou arestarting aunitwhentheambienttemperatureishigher
or lower than those shown in Fig. 7, either of the following
methods may be used.
Method 1: Determine the total weight of the refrigerant for the
total system by adding the required charge for the
outdoorunit,the indoor unit andthe refrigerant lines
using information in Tables 2 (Physical Data) and 6
(Refrigerant Line Charge).
Using the charging procedures outlined above, weigh the re-
quired amount of refrigerant charge into the unit.
Method 2: Install a field supplied moisture indicating sight
glass in the liquid line between the filter-drier and
the evaporator coil.
Using the charging procedure outlined above, charge refriger-
ant until the moisture indicating sight glass is clear. Add ap-
proximately 2 extra pounds of refrigerant to assure a liquid
refrigerant seal at the expansion valve under all operating
conditions. Block the flow of the condenser air, if necessary, to
assure a head pressure of 280 psig during the charging proce-
dure.
Note: The installer should return to the job to verify the
operating charge when the ambient temperature is
within the conditions shown in Fig.7.
550.23-N6Y
10 Unitary Products Group

Char
g
in
g
Curve
H*CE180
200
250
300
350
400
57 62 67 72 77 82 87 92 97
Suction Pressure
Discharge Pressure
115°F Ambient
105°F Ambient
95°F Ambient
85°F Ambient
75°F Ambient
Char
g
in
g
Curve
H*CE240
200
250
300
350
400
57 62 67 72 77 82 87 92 97
Suction Pressure
Discharge Pressure
115°F Ambient
105°F Ambient
95°F Ambient
85°F Ambient
75°F Ambient
FIG. 7 - CHARGING CURVE FOR HCE180
FIG. 8 - CHARGING CURVE FOR HCE240
550.23-N6Y
Unitary Products Group 11

FIRST STAGE OF COOLING
A call for cooling at terminal Y1 energizes relay RY1. Relay
RY1 closes contacts RY1-1, energizing time delay relay 3TR.
If time delay relay 3TR is satisfied as described below, it will
energizeitsoutputterminalY2,whichisconnectedtocompres-
sor 1 control module terminal M1.
If the compressor 1 control module is satisfied as described
below, it will apply power to terminal 7 of low or high pressure
lock out relay (LOR) contacts. See a description of the LOR
operation below. If the LOR coil is not energized (not locked
out),the LOR contactswillbeclosed, energizingcontactor 1M,
which powers compressor 1 and condenser fan motor 1.
When 1M is energized on H3CE240 units, auxiliary contact
1M-AC2 is closed, powering terminal 1 for opening the stage 1
solenoid in air handlers which feature a stage 1 solenoid.
If the low ambient temperature switch TLA is closed, it will allow
condenser fan 2 contactor 3M to energize. TLA opens as the
temperature falls below 50 F and closes as the ambient rises
above 60 F. TLA is used on the H3CE180, not the H3CE240.
Anti-short Cycle Time Delay Relays 3TR and 4TR
Relay 3TR, which serves compressor 1 control, has an adjust-
able low voltage lock out which is set at 20V in the factory. The
voltage applied to 3TR must be above its lock out setting and
5 minutes must elapse since the relay was last energized
before it will energize its output terminal Y2. Relay 4TR is
identical but it serves compressor 2 control.
Compressor Control Module
If the compressor control module terminals L1 (or T1) and L2
(orT2)have24Vappliedandtheinternalcompressortempera-
ture lock out is inactive, the internal switch connecting M1 and
M2willbeclosed. M1toM2willopenifoneofthecompressor’s
internal temperature sensors exceeds its limit. M1 to M2 stays
open for 30 minutes after a internal temperature limit is ex-
ceeded. The 30 minute lock out may be reset prior to the 30
minutes expiring by removing power to the control module
terminals L1 and L2. During normal operation, each compres-
sor control module should always be powered at the L1 and L2
terminals, whether there is a call for cooling or not.
Low or High Pressure Lock Out Operation
If the lock out circuit path is opened during a call for cooling,
the lock out relay (LOR) coil will energize, opening LOR-1
contacts and disabling all compressor operation. The lock out
circuit path is open if:
•the lock out relay contacts LOR-1 are open, OR
•the low pressure switch LP is open AND the low
pressure switch bypass timer contacts 1TR-1 are open
OR
•the high pressure switch HP is open.
Once the LOR coil has been energized, it remains energized,
locking out cooling operation until the call for cooling has been
removed. When Y1 is returned to 0 volts, the LOR coil is no
longerenergized,closingtheLOR-1contacts andremovingthe
lock out.
Thelowpressurebypasstimer1TRleavesthe1TR-1contacts
closed upon the start of a call for cooling until its 90 second
(nominal) timer has expired. This bypasses the low pressure
switch during start up. After the time delay has elapsed, 1TR-1
contacts are opened, once again allowing low pressure to
trigger the lock out circuit if the low pressure switch opens.
START-UP
CRANKCASE HEATER
Thecrankcaseheatermustbeenergizedatleast8hoursbefore
starting the compressor.To energize the crankcase heater, the
main disconnect switch must be closed. During this 8 hour
period, the system switch on the room thermostat must be
“OFF”to prevent the compressor from starting.
CAUTION: DO NOT ATTEMPT TO START THE COMPRES-
SOR WITHOUT AT LEAST 8 HOURS OF CRANK-
CASE HEAT OR COMPRESSOR DAMAGE CAN
OCCUR.
Make sure that the bottom of the compressor is warm to the
touch to prove crankcase heater operation.
PRE-START CHECK
Before starting the unit, complete the following check list:
1. Have sufficient clearances been provided?
2. Has all foreign matter been removed from the interior of the
unit (tools, construction or shipping materials, etc.)?
3. Have the condenser fans been rotated manually to check
for free rotation?
4. Are all wiring connections tight?
5. Does the available power supply agree with the nameplate
data on the unit?
6. Is the control circuit transformer set for the proper voltage?
7. Have the fuses, disconnect switch and power wire been
sized properly?
8. Are all compressor hold-down nuts properly secured?
9. Are any refrigerant lines touching each other or any sheet
metal surface? Rubbing due to vibration could cause a
refrigerant leak.
10. Are there any visible signs of a refrigerant leak, such as oil
residue?
11.Is any electrical wire laying against a hot refrigerant line?
INITIAL START-UP
1. Supply power to the unit through the disconnect switch at
least 8 hours prior to starting the compressor.
2. Move the system switch on the thermostat to the AUTO or
COOL position.
3. Reduce the setting of the room thermostat to energize the
compressor.
4. Check the operation of theevaporator unitper the manufac-
turer’s recommendations.
5. With an ammeter, check the compressor amps against the
unit data plate.
6. Check for refrigerant leaks.
7. Check for any abnormalnoisesand/or vibrations,and make
the necessary adjustments to correct (e.g. fan blade(s)
touching shroud, refrigerant lines hitting on sheet metal,
etc.)
8. After the unit has been operating for several minutes, shut
off the main power supply at the disconnect switch and
inspectallfactory wiringconnectionsandboltedsurfacesfor
tightness.
OPERATION
550.23-N6Y
12 Unitary Products Group

During a lock out, the LOR-2 contacts are closed, energizing
the X terminal on the terminal board for lighting a lock out
warning light.
Resetting the Lock Out
The lock out may be reset by:
•Turning the thermostat switch to OFF, or
•Momentarily adjusting the cooling set point to its maxi-
mum allowed value.
If the unit does not resume operation after the anti-short cycle
timer expires or if it continues to lock out after resuming
operation, call a service technician to diagnose and repair the
unit.
CAUTION: Repeatedly resetting the lock out may cause dam-
age to the unit.
Second Stage of Cooling
The second stage of cooling will only be enabled if the first
stage of cooling is on, closing auxiliary contact 1M-AC1. A call
for cooling at terminal Y2 energizes Relay RY2, closing contact
RY2-1, and energizing time delay relay 4TR if contact 1M-AC1
is closed. If time delay relay 4TR is satisfied, it will energize its
output terminal Y2, which is connected to compressor 2 control
module terminal M1.
If the compressor 2 control module is satisfied, it will energize
time delay relay TDR. After 4 seconds, TDR energizes com-
pressor 2 contactor 2M.
When 2M is energized on H3CE240 units, auxiliary contact
2M-AC1 is closed, powering terminal 2 for opening the stage 2
solenoid in air handlers which feature a stage 2 solenoid.
LOW AMBIENT COOLING
The following accessories are available to provide low ambient
operation to 0°F:
SAFETY FEATURES
1. The compressor is protected against over current and
excessive temperature as described in the Sequence of
Operation.
2. The compressor is equipped with a crankcase heater to
discourage refrigerant migration into the compressor sump
during the “OFF” cycle.
3. The condenser fan motors haveauto-reset internal protec-
tion.
4. The secondary of every transformer is grounded.
5. Every unit is protected by high and low-pressure controls .
CAUTION:
DO NOT ATTEMPT TO START THE COMPRESSOR WITHOUT
AT LEAST 8 HOURS OF CRANKCASE HEAT OR COMPRES-
SOR DAMAGE WILL OCCUR.
2LA04704225 208/230 VOLTS
2LA04704346 460 VOLTS
2LA04704458 575 VOLTS
SECURE OWNER’S APPROVAL: When the system is functioning properly, secure the owner’s approval. Show him the
location of all disconnect switches and the thermostat.Teach him how tostart and stop the unit and how to adjust temperature
settings within the limitations of the system.
MAINTENANCE
CLEANING CONDENSER SURFACE
Dirt should not be allowed to accumulate on the condenser coils
or other parts in the condenser air circuit. Clean as often as
necessary with a brush, vacuum cleaner attachment or other
suitable means.
LUBRICATION
The fan motors for these condensing units are equipped with
factory lubricated and sealed ball bearings.They do not require
any maintenance.
COMPRESSOR REPLACEMENT
Contact the local UPG Distribution Center for compressor or
parts.
P.O.Box 1592, York, Pennsylvania USA 17405-1592
Subject to change without notice. Printed in U.S.A
Copyright  by York International Corporation 1998. All Rights Reserved. Code: SBY 550.23-N6Y