Carrier 50JX042300, 50JX036300, 50JX024300, 50JS042300, 50JS030300 Installation Guide
...
HEA_ & COOLiING
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50JS, 50JX
Single-Packaged Heat Pump Units
Installation, Start-Up,
and Service Instructions
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS ..................................................... 1
INTRODUCTION .......................................................................... 2
RECEIVING AND INSTALLATION .......................................... 2
Cheek Equipment ...................................................................... 2
IDENTIFY UNIT ................................................................ 2
INSPECT SHIPMENT ........................................................ 2
Provide Unit Support ................................................................ 2
ROOF CURB ....................................................................... 2
SLAB MOUNT ................................................................... 2
GROUND MOUNT ............................................................ 2
Provide Clearances .................................................................... 2
Rig and Place Unit .................................................................... 2
INSPECTION ...................................................................... 2
INSTALLATION ................................................................ 2
Select and Install Ductwork ..................................................... 4
CONVERTING HORIZONTAL DISCHARGE UNITS TO
DOWNFLOW (VERTICAL) DISCHARGE UNITS ......... 5
Provide for Condensate Disposal ............................................. 6
Install Electrical Connections ................................................... 7
HIGH-VOLTAGE CONNECTIONS ................................ 10
ROUTING POWER LEADS INTO UNIT ...................... l0
CONNECTING GROUND LEAD TO GROUND LUG.10
ROUTING CONTROL POWER WIRES (24-V) ............ 13
SPECIAL PROCEDURES FOR 208-V OPERATION ...15
PRE-START-UP .......................................................................... 17
START-UP ................................................................................... 17
Check for Refrigerant Leaks .................................................. 17
Start-Up Adjustments .............................................................. 17
CHECKING COOLING AND HEATING
CONTROL OPERATION ................................................. 17
CHECKING AND ADJUSTING REFRIGERANT
CHARGE ........................................................................... 18
REFRIGERANT CHARGE .............................................. 18
NO CHARGE .................................................................... 18
LOW CHARGE COOLING ............................................. 19
TO USE COOLING CHARGING CHARTS .................. 19
INDOOR AIRFLOW AND AIRFLOW ADJUST-
MENTS .............................................................................. 19
MAINTENANCE ......................................................................... 20
Air Filter. ................................................................................. 21
Indoor blower and motor ........................................................ 21
OUTDOOR COIL, INDOOR COIL, AND
CONDENSATE DRAIN PAN .............................................. .22
Outdoor fan ............................................................................. 23
Electrical controls and wiring ................................................ 23
Refrigerant circuit ................................................................... 24
Indoor airflow ......................................................................... 25
Metering device ...................................................................... 25
Liquid line strainers ................................................................ 25
High Flow Valves ................................................................... 25
Time-delay relay ..................................................................... 25
Loss of charge switch ............................................................. 25
Check defrost thermostat ........................................................ 25
Defrost Thermostat ................................................................ _25
TROUBLESHOOTING .............................................................. .25
START-UP CHECKLIST ............................................................ 25
NOTE TO INSTALLER -- READ THESE INSTRUCTIONS
CAREFULLY AND COMPLETELY before installing this unit.
Also, make sure the Owner's Manual and Service Instnu:tions are
leR with the unit after installation.
C99001
Fig. 1--Model 50JS/50JX
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified personnel should install, repair, or service
air-conditioning equipmenL
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters. All other operations should be performed
by trained service personnel. When working on air-conditioning
equipment, observe precautions in the literature, tags, and labels
attached to the unit, and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbra_ng operations. Have fire extinguisher
available for all brazing operations.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without Incurring obligations.
PC 10t CaLalog No. 5354)0079 Pdn_d in U.S.A_ Form 50JS,JX-SSI Pg 1 Replaces: 50JS,JX_SI
Improper installation, adjustment, altoration, service, mainte-
nance, or use can cause explosion, tire, electric shock, or
other occurrences, winch could cause serious injury or death
or damage your property. Consult a qualified installer or
service agency for information or assistance. The qualified
installer or agency must use only factory-authorized kits or
accessories when modifying this product.
Recognize safety information. This is the safety-alert symbolz_ x .
When you see this symbol on the product or in instructions or
manuals, be alert to the potential for personal inju_.
Understand the signal words -- DANGER, WARNING, CAU-
TION, and NOTE. Danger identifies the most serious hazards,
which will result in severe personal injury or death. Warning
indicates a condition that eolld cause serious personal injury or
death. Caution is used to identify unsafe practices, which would
result in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
1. The power supply (volts, phase, and hertz) must correspond to
that specified on unit rating plato.
2. The electrical supply provided by the utility mnst be sufl']cient
to handle load imposed by this unit.
3. Tins installation must conform with local building codes and
with NEC (National Electrical Code). Refer to provincial and
hieal plumbing or wasto water codes and other applicable local
codes.
m kVl=5_1_ff[_
Before performing service or maintenance operations on
system, turn off main power to unit. Turn off accessory heater
power switch if applicable. Electrical shock could cause
severe injury or death.
INTRODUCTION
The 50JS and 50JX heat pumps are fully self-contained and
designed for outdoor installation (See Fig. I). Standard units are
shipped in a horizontal-discharge configuration for installation on
a ground-level slab. Units can be converted to downflow (vertical)
discharge configurations for rooftop applications.
RECEIVING AND INSTALLATION
Step l_heck Equipment
IDENTIFY UNIT
The unit model number and serial number are stamped on the unit
identification plate. Check this information against shipping pa-
pers.
INSPECT SHIPMENT
Inspect for shipping damage while unit is still on shipping pallet.
If unit appears to be damaged or is torn loose from its anchorage,
have it examined by transportation inspectors before removal.
Forward claim papers directly to transportation company. Manu-
facturer is not responsible for any damage incurred in transit.
Check all items against shipping list. Immediately notify the
nearest Cartier Air Conditioning office if any item is missing. To
prevent loss or damage, leave all parts in original packages until
installation.
Step 2---Provide Unit Support
ROOP CURB
Install accessory roof curb in accordance with instructions shipped
with curb (See Fig. 5). Install insulation, cant strips, roofing, and
flashing. Ductwork must be attached to curb.
IMPORTANT: The gaskcting of the unit to the roof curb is critical
for a watertight seal. Install gasketing material supplied with the
ronf curb. Improperly applied gaskcting also can result in air leaks
and poor unit performance.
Curb should be level to within 1/4 in. (See Fig. 6). This is
necessary for unit drain to function properly. Refer to accessory
roof curb installation instructions for additional information as
required.
SLAB MOUNT
Place the unit on a solid level concrete pad that is a minimum of
4 in. thick with 2 in. above grade (See Fig. 7). The slab should
extend approximately 2 in. beyond the casing on all 4 sides of the
unit. Do not secure the unit to the slab except when required by
local codes.
GROUND MOUNT
The unit may be installed either on a slab or placed directly on the
ground if local codes permit. Place the unit on level ground
prepared with gravel for condensate discharge.
Step 3_Provide Clearances
The required minimum service clearances are shown in Figs. 2 and
3. Adequate ventilation and outdoor air must be provided. The
outdoor fan draws air through the outdoor coil and discharges it
through the top fan grille. Be sure that the fan discharge does not
recirculato to the outdoor coil. Do not locate the unit in either a
corner or under an overhead obstruction. The minimum clearance
under a partial overhang (such as a normal house overhang) is 36
in. above the unit top. The maximum horizontal extension of a
partial overhang must not exceed 48 in. For extended overhangs,
provide a minimum clearance of 48 in.
IMPORTANT: Do not restrict outdoor airflow. An air restriction
at either the outdoor-air inlet or the fan discharge may be
detrimental to compressor life.
Do not place the unit where water, ice, or snow from an overhang
or roof will damage or flood the unit. Do not install the unit on
carpeting or other combustible materials. Slab-mountod units
should be at least 4 in. above the highest expected wator and nmoff
levels. Do not use unit if it has been under water.
Step 4-_Rig and Place Unit
Rigging and handling of this equipment can be hazardous for many
reasons due to the installation location (roofs, elevated stmctures_
etc.)
Only trained, qualified crane operators and ground support staff
should handle and install this equipment.
When working with this equipment, observe precautions in the
literature, on tags, stickers, and labels attached to the equipment,
and any other safety precautions that might apply.
Follow all applicable safety codes. Wear safety shoes and work
gloves.
INSPECTION
Prior to initial use, and at monthly intervals, all rigging brackets
and straps should be visually inspected for any damage, evidence
of wear, structural deformation, or cracks. Particular attention
should be paid to excessive wear at hoist hooking points and load
support areas. Brackets or straps showing any kind of wear in these
areas must not be used and should be discarded.
INSTALLATION
1. Remove unit from shipping carton. Leave top shipping skid on
the unit as a spreader bar to prevent the rigging straps from
damaging the unit. If the wood skid is not available, use a
spreader bar of sufficient length to protect unit from damage.
,,,,,,,,,,
BIIIIIIIII lilllil
_" TOP VIEW
U (12.qk_iCS llD m MAll.
TOP _ UNIT ............................................. 355.5 114.0©]
DUCT Sip[ _ UNll ...................................... 50_ (20€)
SIDE _'PO$1T[ OUSTS ..................................... )5_.5 114 0_)
_TT_I OF UNIT ........................................ 1_.7 (0.50)
[L(CTRIC HEAT PAH[L ..................................... tl44 [)500)
i_ _ Ct.F.AJiJaEl_
B[TWE[N UNITS, POId_ ENTRy SI_ ............... 1066 $ 142 00]
UNiT kid UNGNOUND[OSURFACES, pOllER [HTRY _1[*[ .......... gl4.0 (35.001
IIN_I AND BLOCK OH C_ICRET[ _kLLS ANO OTHER
GNOUN_D SURIA_[S, _ONER [HTRT SIb[ ........... 1066 $ [4_ 00]
MILLI_T[R$ [IN)
MILLIMETERS tINT
402 _UCT _uCl
_PPLI
i I
sa )
t3,B_ REAR VIEW
_ CI BII_M_CE _OR oqmAllm MK) _
[VkP COIL ACCESS SIDE ................................ 9140 (3600)
PIeR ENTR? SlOE ................................ 914 _ (36 00]
([X¢[P1 F_ HE€ II{OUIItEME#TSI
UNIT l_ ............................................... 914 0 (35 0_]
$10( O_I_SIT[ OUCT$.............................. 914¸0 (_5 0_)
OUI_T PANEL.............................................. )04¸8 [12.00)1
*MINIMUM _ISTANC[S:IF UNIT IS PLAC[O L[$$ THAN 304.8 [IZ.O4) _RO_ WALL
_TSTEW,TH[H S_ST_II PERFORNkNCE NATBE C_PRI'IIIS[D
MILLIM[TERS tIN)
DIMENSIONS IN [) ARE IN INCHES
II1!111III II I IIIli
l,l llllllll+
UNIT
ELECTRICAL CHARACTERISTICS IN. (MM)
UNIT WEIGHT UNIT HEIGHT
Ib kg "A"
50JS018
50JS024
5OJS03O
50JS036
50JS042
50JX024
5OJX030
50JXO36
208/230-1-60, 208/230-3-60, 460-3-60 291 132.0 37.02 (940.3)
208/230-1-60, 208/230-3-60, 460-3_0 323 146.5 37.02 (940.3)
208/230-1-60, 208/230-3-60, 460-3-60 328 148.8 37.02 (940.3)
208/230-1-60 283 128.4 37.02 (940.3)
208/230-1-60 289 131.1 39.02 (991.1)
208/230-1-60, 208/230-3-60 287 130.2 39.02 (991.1)
208/230-1-60 299 135.6 41.02 (1041.9)
208/230-1-60, 208/230-3-60 320 145.2 37.02 (940.3)
Fig. 2--50JS018-042150JX024-036 Unit Dimensions
2. Position the lifting bracket assembly around the base of the
unit. Be sure the strap does not twist.
3. Place each of the 4 metal lilting brackets into the rigging holds
in the composite pan.
4. Thread lifting bracket strapping around bottom perimeter of
unit as follows:
a. Open lever of tension buckle (ratchet type).
b. Feed strapping through tension buckle as shown in Fig. 8.
c. Pull strapping through tension buckle unit taut.
L'? ,=
13 43)
RIGHT gDE VIEW
CENTER OF GRAVITY
X
19.5 (495.3)
19.7 (500.4)
19.8 (495.3)
19.5 (495.3)
19.7 (500.4)
19.0 (482.6)
19.7 (500.4)
19.7 (500.4)
d. Snap lever down to lock strap in tension buckle. To release
sWapping, squeeze safety latch, lift lever, and pull webbing
outward.
5. Tighten the tension buckle until it is taut. LiRing brackets
must be secure in the rigging holds.
6. Attach field-supplied clevis or hook of sufficient strength to
hole in the lifting bracket (See Fig. 9).
7. Attach the 2 safety sWaps directly to the clevis or hook at the
4 rigging brackets. DO NOT attach the safety straps to the
lifting brackets (See Fig. 9).
----se
IN. (MM)
Y
13.7 (348.0)
13.9 (353.1)
13.7 (348.0)
13.7 (348.0)
14.0 (355.6)
13.7 (348.0)
14.0 (355.6)
14.0 (355.6)
(0201
C00137
Z
15.o (381.o)
15.0 (381.o)
15.0 (381.0)
13.0 (330.2)
13.o (330.2)
16.0 (406.4)
17.6 (447.0)
16.5 (419.1)
Illlllll IIIllllll
Illlllll IIIllllll
SUppLy * * . R[IORN
_Q? 0P_MR_
DUCT _UCl
t TOP VIEW
U CLF._qidl{I TO COIU_TI.E II_TL
TI_O OF UNIT ......................................... 355.6 [1400]
DUCT SlOE O_ UNIT ................................ 50._ [?00]
SlOE OPPOSITE DUCTS ........................ 355G 114UO]
flOlT_OF UNIT ............................................ I?.T [0_0]
[L[¢IRP¢ HEAl PANEL ...................................... 91_.4 [31.00}
lmm
E[lI[[ll UNITS, POMER £gTRY Sit)[ ........................ 10_6.8 [42 001
UNIT A#O UNGROUIIpED SURFACES, POB_R ENTRY $rDE .......... 91l. G [36001
UIIIT lllO BLOCIKOB COHCRET[ IALLS AND OTHER
NILLIMEIER$ [IN]
MILLIMETERS [iNI
i' 'd l "i' '
AI
LEFT SIDE VIEW ,. ..... ,_, FRONT VIEW
UNiT
50JS048
50JSO60
60JX042
50JX048
50dXO6O
ELECTRICAL CHARACTERISllCS IN. (MM)
208/230-1-60, 208/230-3-60, 460-3_0 353 160.1 38.98 (990.2)
208/230-1-60, 208/230-3-60, 460-3-60 418 189.6 38.98 (990.2)
208/230-1-60, 208/230-3-60, 460-3_0 350 158.8 40.98 (1040.9)
208/230-1-60, 208/230-3-60, 460-3-60 315 170.1 40.98 (1040.9)
208/230-1-60, 208/230-3-60, 460-3-60 428 194.1 42.98 (1091.7)
UNiT WEIGHT UNiT HEIGHT
Ib kg "A"
Fig. 3_50JS048-060/50JX042-060 Unit Dimensions
8. Position lifting point directly over the unit's center of gravity.
9. Lift unit. When unit is directly over the roof curb, remove the
2 safety straps. Lower the equipment onto the roof curb.
Step S--Select and install Ductwork
The design and installation of the duct system must bc in
accordance with the standards of the NFPA for installation of
non-residence type air conditioning and ventilating systems, NFPA
90A or residence type, NFPA 90B and/or local codes and
ordinances.
ii ?
I I
i
i
REAR VIEW
[VkP COIL k¢C[$5 SIO[ .................................. _140 [36 00]
([_¢EPI fOR N[_ REOUIREME#TSI
UMII TOP ............................................... _14.0 [_00]
$I0[ _POSIT[ pUCTS ..................................... 914.0 [_00]
0_I FkW[L ............................................ 304.8 II_ O0}g
tMINIMUM DI$1ANC[S:IF UNIT IS PLACED LESS THAN 3048 {12 00] FR_f4WALL
DIMENSIOKS IN [I ARE IN li_.H[$
SrSTEM.TH[ISYSTENP[RFORNA#CEMNYflE_OIORO_II$[O
44 511 T_I01_XO-
P_[R [_TRY
_ONIROL {MI_
•
8T I
RIGHT SIDE VIEW
CENTER OF GRAVITY
X
19.9 (505.5)
19.9 (505.5)
19.9 (505.5)
19.9 (505.5)
19.9 (505.5)
Select and size ductwork, supply-air registers, and return air grilles
according to ASHRAE (American Society of Heating, Refrigera-
tion, mad Air Conditioning Engineers) recommendations.
The unit has duct flanges on the supply- and return-air openings on
the side of the unit.
When designing and installing ductwork, consider the following:
M_LLIMEIER$ [IN]
C00136
IN. (MM)
Y Z
15.7 (398.8) 17.0 (431.8)
15.7 (398.8) 17.0 (431.8)
15.7 (398.8) 16.6 (421.6)
15.7 (396.6) 18.0 (457.2)
15.7 (398.8) 17.6 (447.0)
1 2
Y
CORNER WEIGHTS (SMALL CABINET)
o_
o
q)
"o
o
X
Unit 18 24 30 36 42
Comer Weight 1 2683 2689 26867 269; 3823
Comer Weight 2 53 56 54 55 55
Total Weight 103 104 105 106 107
Comer Weight 3 61 62 62 63 78
Comer Weight 4
Cnmer WRiaht 1 R:_ 63 64 -- --
Comer Weight 2 62 74 76 -- --
Comer Weight 3 56 56 58 -- --
Comer Weight 4 118 127 130 -- --
CORNER V_EIGHTS tSmall C_hinet'=
Unit 24 .30 RR -- --
Total WP-iaht 2_1_1 :_gN 32g -- --
Fig. 4---Comer Weights (in Pounds)
For vertical supply and rentrn units, tools or parts could drop
into ductwork and cause serious injury or death. Install a 90
degree turn in the return ductwork between the unit and the
conditioned space. If a 90 degree elbow cannot be installed,
then a grille of sufficient strength and density should be
installed to prevent objects from falling into the conditioned
space. Units with electric heaters require 90 degree elbow in
supply duct.
l. All units should have fiald-supplied filters or accessory filter
rack installed in the return-air side of the unit. Recommended
sizes for filters are shown in Tables 1 and 2.
2. Avoid abrupt duct size increases and reductions. Abrupt
change in duct size adversely affects air performance.
IMPORTANT: Use flexible connectors between ductwork and
unit to prevent transmission of vibration. Use suitable gaskets to
ensure weather tight and airtight seal. When electric heat is
installed, use fireproof canvas (or similar heat resistant material)
connector between duetwork and unit discharge cormeetion. If
flexible duct is used, insert a sheet metal sleeve inside duct. Heat
resistant duct connector (or sheet metal sleeve) must extend 24-in.
from electric heater element.
3. Size ductwork for cooling air quantity (cfm). The minimm'n
air quantity for proper electric heater operation is listed in
Tables 3 and 4. Heater limit switches may trip at air quantities
below those recommended.
X
CORNER WEIGHTS (LARGE CABINET)
Comer Weight 1
i Unit 48 60 --
Comer Weight 2 49 58 --
(n Total Weight 132 156 --
Comer Weight 3 96 114 --
Comer Weight 4
CORNER WFIGHTR (Lnme CabJnet_
X TntnlW_inht 350 R75 428
[ _ _'mm"r WRinht 1 75 81 92
Comer Weight 3 95 102 116
_ Comer Weight 2 49 52 60
Comer Weight 4 131 140 160
4. Seal, insulate, and weatherproof all external ductwork. Seal,
insulate and cover with a vapor barrier all ductwork passing
through conditioned spaces. Follow latest Sheet Metal and Air
Conditioning Contractors National Association (SMACNA)
and Air Conditioning Contractors Association (ACCA) mini-
mum installation standards for residential heating and air
conditioning systems.
5. Secure all ducts to building structure. Flash, weatherproof, and
va'bration-isolate duct openings in wall or roof according to
good construction practices.
CONVERTING HORIZONTAL DISCHARGE UNITS TO
DOWNFLOW (VERTICAL) DISCHARGE UNITS
Before performing service or maintenance operations on
systera, turn off main power to unit and install lockout tag.
Turn off accessory heater power switch if applicable. Elec-
tahcalshock could cause serious injury or death.
1. Open all electrical disconnects and install lockout tag before
starting any service work.
2. Remove side duct covers to access bottom return and supply
knock outs.
NOTE: These panels are held in place with tabs similar to an
electrical knockout.
3. Use a screwdriver and hammer to remove the panels in the
bottom of the composite unit base.
3
IJnit 42 4_ 60
C0007t
Roof Curb for Small Cabinet
Note A: When unit mounting screw is used,
retather brad(at must also be used.
Roof Curb for Large Cabinet
Note A: When unit mounting screw is used,
rstaine¢bracket must also be used.
\
R/A
""_ Gasket around\
\
Insulated Gasket around
deck pan outer edge _
(BXC)
UNIT SIZE
50JS018-042 50JX024_36
50JS048-060 50JX042_60
NOTES:
1. Roof curb must be sat up for unit being installed.
2. Seal strip must be applied, as required, to unit being insatlled.
3. Dimensions in ( ) are in millimeters.
4. Roof curb is made of 16-gage steel.
5. Table lists only the dimensions, per part number, that have changed.
6. Attach dustwork to curb (flanges of dust rest on curb).
7. Insulated panels: 1-in. thick fiberglass 1 Ib density.
8. Dimensions are in inches.
9. When unit mounting screw is used (see Note A), a retainer brachat must be used as well. This bracket must also be used when required by code for hun_cane or
seismic conditions. This bracket is available through Mic_omatL
ODS CATALOG NUMBER
CPRFCURB006A00
CPRFCURB007A00
CPRFCURB008AO0
CPRFCURBOO9AO0
A
IN. (MM)
8 (203)
14 (356)
8 (203)
14 (356)
B
IN. (MM)
11(279)
11(279)
16 3/16 (411)
16 3/16 (411)
duct
IN. (MM)
161/2 (419)
161/2 (419)
17 3/8 (441)
17 3/8 (441)
\/
S/A
/\
C00076
C
D
IN. (MM)
28-3/4 (730)
28-3/4 (730)
40-1/4 (1022)
40-1/4 (1022)
Fig. 5--Roof Curb Dimensions
4. Ensure the side duct covers are in place to block off the
horizontal air openings.
NOTE: Avoid abrupt duct size increases and reductions. Abrupt
change in duct size adversely affects air performance.
Step 6--Provide for Condensate Disposal
NOTE: Ensure that condensate-water disposal methods comply
with local codes, restrictions, and practices.
The units dispose of condensate through a 3/4 in. NPT female
fitting that exits on the compressor end of the unit. Condensate
water can be drained directly onto the roof in rooftop installations
(where permitted) or onto a gravel apron in ground level installa-
tions. Install a field-supplied condensate trap at end of condensate
connection to ensure proper drainage. Make sure that the outlet of
the trap is at least 1 in. lower than the drain-pan condensate
6
MAXIMUM ALLOWABLE
DIFFERENCE (in.)
A-B B-C A-C
t/4 1/4 t/4
Fig. 6--Unit Leveling Tolerances
| i |
[I RETURN Iz_-_-''_x _ _ = SUPPLY I II
II I
IllAi R _//_, \ _1 AiR III
iiiilOPENINGfl It i, _ ._-_-._1_ OPENING i111
lllli .# I _ _ (" _i _ II II
IIIll |l I l_r//'_,'_ | II IIII
III1 I L_IIt t}, j i !1 II il
lllll \ 71 V _ II IIII
I
IIIII _ _k ,4" ) /z_ II II
lllll _._._I / /j IIII
I
,ll,l,, JJJJ
2.[
#
EVAR COIL COND. COIL
Fig. 7--Slab Mounting Detail
C99065
C99096
HANDHOLD
/
Fig. 8_Thraading Belt
connection to prevent the pan from overflowing. Prime the trap
with water. When using a gravel apron, make sure it slopes away
from the unit.
If the installation requires draining the condensate water away
from the unit, install a field-supplied 2-in. trap at the condensate
connection to ensure proper drainage. Condensate trap is available
as an accessory or is field-supplied. Make sure that the outlet of the
trap is at least 1 in. lower than the unit drain-pan condensate
connection to prevent the pan from overflowing. Connect a drain
trough using a minimum of field-supplied 3/4 -in. PVC or
field-supplied 3/4 -in. copper pipe at outlet end of the 2 -in. trap
(See Fig. 12). Do not undersize the tube. Pitch the drain trough
downward at a slope of at least 1 in. every 10 ft. of horizontal run.
Be sure to check the drain trough for leaks, prime the trap at the
beginning of the cooling season start-up.
C99067
Step 7_lnstall Electrical Connections
Ill l"l:.1.111 h'[d
The unit cabinet must have an uninterrupted, unbroken
electrical ground to minimize the possibility of personal
injury if an dectrical fault should occur. This ground may
consist of an electrical wire connected to the unit ground lug
in the control compartment, or conduit approved for electrical
ground when installed in accordance with NEC, ANSI/NFPA
American National Standards Institute/National Fire Protec-
tion Association (latest edition) (in Canada, Canadian Elec-
trical Code CSA C22.1) and local electrical codes. Failure to
adhere to this warning could result in serious injury or death.
UNIT SIZE
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSOR QUAN'IITY
TYPE
REFRIGERANT
REFRIGERANT METERING DEVICE
Refrigerant (R-22) Quantity (lb.)
ORIFICE ID (in.)
ORIFICE OD (in.)
OUTDOOR COIL
Rows... Fins/in.
Face Area (sq. ft.)
OUTDOOR FAN
Nominal Airflow (CFM)
Diameter
Motor HP (RPM)
INDOOR COIL
Rows... Fins/in.
Face Area (sq. ft.)
INDOOR BLOWER
Nominal Airflow (CFM)
Size (in.)
Motor HP (RPM)
RETURN-AIR FILTERS (in.)
throwaway
Fig. 10_Typical Installation
Table l_hysical Data
50JS018 50JS024 5OJS030 50JS036
1-1_ 2 2-1_ 3
283 289 287 291
1
RECIPROCATING COMPRESSOR
R-22
AccuReter_
6.5
0.053
0.040
1...17
10.2
2400
22
1/8 (825)
2...15
3.7
700
10X10
1/8 (1075)
20X20X1
5.3 5.6 7.6
0.061 0.068 0.078
0.035 (2) 0.042 (2) 0.046 (2)
1...17 1...17 2,..17
12.0 12.0 10.3
2400 2400 2800
22 22 22
1_ (825) 1_ (825) 1_ (1100)
2...15 3...15 3.,.15
3.7 3.7 3.7
800 1000 1200
10X10 10X10 11X10
1_ (1075) 1_ (1075) 1_ (1075)
20X20X1 20X20X1 20X24X1
50JS042 50JS048 50JS06O
3-1_ 4 5
323 353 418
I
SCROLL COMPRESSOR
8.0 7.85 9.3
0.078 0.088 0.093
0.052 (2) 0.057 (2) 0.061 (2)
2...17 2...17 2...17
10.3 11.6 1t.6
2400 3300 3300
22 22 22
118(825) 1/4 (1100) 1/4 (1100)
4...15 3,,,15 4...15
3.7 4.7 4.7
1250 1600 2000
11X10 11X10 11X10
3/4 (1075) 3/4 (1075) 1 (1100)
24X30X1 24X30XI 24X30X1
C00139
Table 2_Physical Data
UNIT SIZE
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSOR QUANTITY
TYPE
REFRIGERANT
REFRIGERANT METERING DEVICE
Refrigerant (R-22) Quantity (lb.)
ORIFICE ID (in.)
ORIFICE OD (in.)
OUTDOOR COIL
Rows... Fins/in.
Face Area (sq. ft.)
OUTDOOR FAN
Nominal Airflow (CFM)
Diameter
Motor HP (RPM)
INDOOR COIL
Rows... Fins/in.
Face Area (sq. R.)
INDOOR BLOWER
Nominal Airflow (CFM)
Size (in.)
Motor HP (RPM)
RETURN-AIR FILTERS (in.)
throwaway
NOTE:Airfilterpressuredropfor non-standardfiltersmustnotexceed0.08in.wg.
50JX024 50JXO30 50JX036 50JX042 50JX048
2 2-1/2 4
299 320 375
5.1 6.4 10.1 12.3
0,065 0.073 0.088 0.093
0.037 (2) 0.043 (2) 0.057 (2) 0,063 (2)
1...17 2.,,17 2,,,17 2...17
13.7 10.3 13.7 15.7
2350 2350 3300 3300
22 22 22 22
1/8 (825) 1/8 (825) 1/4 (1100) 1/4 (1100)
3,..15 3...15 4...15 4..,15
3.7 3.7 4.7 5.7
800 1000 1450 1750
10X10 10X10 11X10 11X10
1/4 (1075) 1/4 (1075) 1/2 (1075) 1 (1040)
20X20XI 20X20X1 24X30X1 24X30X1
3 3=1/2
328 350
1
SCROLL COMPRESSOR
R-22
AccuRater_
7.0 10.8
0.076 0.080
0.040 (2) 0.052 (2)
2...17 2...17
10.3 13.7
2800 2800
22 22
1/4 (1100) 1/8 (825)
4...15 4-.15
3.7 4.7
1200 1400
10X10 11X10
1/2 (1075) 1/2 (1075)
20X24X1 24X30X1
50JX060
5
428
Table 3_Minimum Airflow for Reliable Electric Heater Operation (Cfm)
SIZE 50JS018 50JS024 50JSO30 50JS036 50JS042 50JS048 5OJS060
AIRFLOW (CFM) 650 800 1000" 1200 1400 1600 2000
• The030 sizemodelsmustbe runonmediumor highspeedwhen usedin conjunctionwith15kwelectricheataccessory
Table 4---Minimum Airflow for Reliable Electric Heater Operation (Chn)
SIZE 50JX024 50JXO30 50JX036 50JX042 50JX048
AIRFLOW (CFM) 800 1000" 1200 1400 1600
* The030 sizemodelsmustbe runonmediumor highspeedwhenusedin conjunstJonwith15kwelectricheataccessory
5OJXO60
2000
9
1"(25mm) MIN.
UT%T!
C99013
Fig, 12_Condensate Trap
. INSTALL SAFETY STRAPS TO
RIGG4NG C_EVIS AT 4 RIGGING B_S
RIGGING HOLES AND INSTALL _i]E DOWN STRAP
L SEE DET_J L A
UNIT
Size
50JS018
50JS024
5OJS03O
50JS036
50JS042
50JS048
50JS060
50JX024
5OJX030
50JX036
50JX042
50JXO48
50JXO60
INCLUDES SHIPPING SKID
AROUND FE RIMElflE:R OF UNIT AND THROUGH
SR_E IN B_Ck_r ,_EMSLY
MAXIMUM WEIGHT
A
Ib kg in. mm.
305 138.4 19.5 495,3
311 141.1 18.5 469,9
309 140.2 19.5 495.3
313 142,0 19.5 495.3
345 156.4 19.5 495,3
375 170.1 20.5 520,7
440 199.5 19.5 495.3
321 145.8 19.0 482.6
342 155.2 20.0 508
350 158,8 20.0 508
372 168,8 21.0 533,4
377 171,0 20.0 508
450 204.2 21.0 533,4
Fig. S--Suggested Rigging
Hodzontal DuctCovers
Fig, 1t--50JX with Duct Covers On
(Unit Shown with Optional Louvered Grille)
DETAIL A
SCALE 0250
C99075
B
in. mm.
16.75 425.5
16.75 425.5
17.50 444.5
17.75 450.9
17.75 450.9
20.62 523.8
19.75 501.7
18.25 463.6
19.25 489
19.0 482.6
29.5 520.7
21.25 539.8
20.0 508.0
C9903O
M [q=l|l i[.]_l
Failure to follow these precautions could result in damage to
the unit being installed:
1. Make all electrical connections in accordance with NEC
ANSI/NFPA (latest edition) and local electrical codes
governing such wiring. In Canada, all elecbJeal connec-
tions must be in accordance with CSA standard C22.1
Canadian Electrical Code Part 1 and applicable local
codes. Refer to unit wiring diagram.
2. Use only copper conductor for connections between
field-supplied electrical disconnect switch and unit. DO
NOT USE ALUMINUM WIRE.
3. Be sure that high-voltage power to unit is within operating
voltage range indicated on unit rating plate. On 3-phase
units, ensure phases are balanced within 2 percent. Consult
local power company for correction of improper voltage
and/or phase imbalance.
4. Insulate low-vultage wires for highest voltage contained
within conduit when low-voltage control wires are in same
conduit as high-voltage wires.
5. Do not damage internal components when drilling through
any panel to mount electricai hardware, conduit, etc.
HIGH-VOLTAGE CONNECTIONS
The unit must have a separate electrical service with a field-
supplied, waterproof disconnect switch mounted at, or within sight
from the unit. Refer to the unit rating plate, NEC and local codes
for maximum fuse/circuit breaker size and minimum circuit amps
(ampacity) for wire sizing (See Tables 5 and 6 for electrical data).
The field-supplied disconnect may be mounted on the unit over the
high-voltage inlet hole (See Fig. 2 and 3).
If the unit has an deetric heater, a second disconnect may be
required. Consult the Installation, Start-Up, and Service Instruc-
tions provided with the accessory for electrical service connec-
tions.
Operation of unit on improper line voltage constitutes abuse and
may cause unit damage that could affect warranty.
ROUTING POWER LEADS INTO UN/T
Use only copper wire between disconnect and unit. The high-
voltage leads should be in a conduit until they enter the duct panel;
conduit termination at the duet panel must be watertight. Run the
high-voltage leads through the power entry knockout on the power
entry side panel. See Fig. 2 and 3 for location and size. When the
leads are inside the unit, run leads up the high-voltage raceway to
the line wiring splice box (See Fig. 13 19). For single-phase units,
connect leads to the black and yellow wires; for 3-phase units,
connect the leads to the black, yellow, and blue wires (See Fig.
18).
CONNECTING GROUND LEAD TO GROUND LUG
Connect the ground lead to the chassis using the ground lug in the
wiring splice box (See Fig. 18).
10
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