Carrier 50GL060300, 50GL048300, 50GL036300, 50GL042300, 50GL030310 Installation Guide
...
HFATUNG & COOLING
%isitx__ _.carrier.com
Installation, Start-Up and Service instructions
SingMe
50GL 7-14 kW (024-048)
Packaged 50 Hz, CE EMectric CooMing Units
with Puron® (R-410A) Refrigerant
NOTE: Read the entire instruction manual be%re starting the
installation.
TABLE OF CONTENTS
SAFETY < ONSIDERATIONS i
RULES FOR SAFE INSTALLATION AND OPERATION .... 1
RECEIVING AND INSTALLATION .......................................... 2
Check Equipment .................................. 2
Identif}" Unit ................................... 2
Inspect Shipment ................................ 2
Provide -Unit Support ............................... 2
Roof" Curb ...................................... 2
Slab Mount ..................................... 2
Ground Level ................................... 2
Field Fabricate Ductwork .......................... 2
Provide Clearances ................................... 2
Rig and Place Unit ................................... 4
Inspection ..................................... 5
Installation ....................................... 6
Connect Condensate Drain ........................... 6
Install Duct Connections ........................... 6
Configuring Units l'or Downflow
(Vertical) Discharge .............................. 6
Install Electrical ( onnection .......................... 8
High-Voltage Connections ........................ 8
Control Voltage Connections ..................... 10
Standard Connection .............................. i 0
Transi\_rmer Protection .......................... 11
PRE-START-[ P ................................... !2
START-UP .......................................... 12
Check for Reffigeration Leaks ....................... 12
Start [p Cooling Section and Make Adjusm_ent ........ 13
Checking Cooling Control Operation ................ 13
Checking and Adjusting Refrigerant Charge ........... 13
Indoor Airflow and Airflow Adjustments .............. I3
For 400"V Motors .............................. 13
Cooling Sequence of Operation .................... 14
MAINTENANCE ................................... 15
Air Filter ........................................ 18
Evaporator Blower and Motor .......................................... 18
(ondenser (oil_ Ewtporator (oil, and (ondensate Drain.1
( ondenser Fan ................................................................... 19
Electrical <ontrols and Wiring ......................................... i9
Refi'igerant Circuit ............................................................. 19
Evaporator Airflow ............................................................ i9
High Flow Valves .............................................................. 19
Phase Monitor ( ontrol ...................................................... i9
PL RONR; System Items .................................................... i9
TROUBLESHOOTING ............................................................... 21
START-UP < HE( KLIST ............................................................ 2 !
NOTE TO INSTALLER Before the installation, READ THESE
INSTRUCTIONS CAREFULLY AND COMPLETELY Also,
make sure the User's Manual and Replacement Guide are left with
the unit after installation.
SAFETY CONSIDERATIONS
Installation and seivicing 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 equipment.
Untrained personnel can perfbrm basic maintenance functions of
cleaning coils and filters. Al! other operations should be perf'ormed
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 fbr unbrazing operations. Have fire extinguisher
available fk}rall brazing operations. Consult a qualified installer or
service agency fk}r infommtion or assistance. The qualified in-
staller or agency must use only fitctory-authorized kits or acces-
sories when modifying this product.
Before perfbrming service or maintenance operations on
system, mm off power to unit Turn off accessory- heater
power switch, if applicable. EtectIical shock can cause
personal it!jury.
Puron (R-410A) systems operate at higher pressures than
standard R=22 systems. Do not use R-22 service equipment or
components or* Pro'on (R-410A) equipment. Ensure service
equipment is rated for Puron (R=410A).
RULES FOR SAFE INSTALLATION AND OPERATION
Recognize safety infbrmation. This is the safety-alert symbolS\ .
When yon see this symbol in instructions or manuals, be alert to
the potential for personal inju W
Understand the signal words DANGER.. WARNfNG, CAUTION,
and NOTE. These words are used with the safety-alert synghol.
DANGER identifies the most serious hazards which will result in
severe personal injnry or death. WARNING signifies a hazard
which could result in 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.
The power supply (volts, phase, and hertz) must correspond to that
specified on unit rating plate.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 101 Catalog No 005-00026 Printed in U.S.A Form 50GL-C2SI Pg 1 7-02 Replaces: 50GL-C1SI
Fig. l--Model 50GL {50 Hz)
The electrical supply provided by the utility must be sufficient to
handle load imposed by this unit.
This installation must conform with local building codes and with
NE( (National Electrical Code) and NFPA 70, NFPA 54/ANSI
Z223.1 latest revision, and NFG( (National Fuel Gas Code). Re_:_r
to provincial and local plumbing or waste water codes and other
applicable local codes.
Approved for outdoor installation on wood flooring or on class A,
B or C roof covering materials.
These instructions cover n_inimum requirements and con_bt'm to
existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especia!ly those that may not have kept up with changing resideno
tial construction practices. We require these instrl/ctions as a
minimum fbr a safe installation.
The 50GL units are Nlly self-contained, and designed for outdoor
installation (see Fig. 1). See Figs. 2 and 3 t:br unit dimensions. All
unit sizes have discharge openings for both horizontal and down°
flow configurations, and are facto V shipped with all duct openings
covered. Units may be installed either on a rooflop, ground-level
cement slab, or directly on the ground if local codes permit. See
Fig. 4 ibr roof curb dimensions.
RECEBVING AND INSTALLATION
Step 1--Check Equipment
IDENTIFY UNIT
The unit model number and serial nungber are stamped on unit
identification plate Check this information against shipping papers
and job data
INSPECT SHIPMENT
Inspect lk_r shipping damage while unit is still on shipping pallet
If unit appears to be damaged or is torn loose tiom its anchorage,
have it examined by transportation inspectors before removal.
Forward claim papers directly to transportation company. Manuo
fhct*_rer is not responsible fbr any damage incurred in transit.
Check all items against shipping list. Immediately notify the
nearest ( mxier Air Conditioning once if any item is missing. To
prevent toss or damage, leave all parts in original packages until
installation.
C99064
Step 2--Provide Unit Support
ROOF (URB
Install accessory roof curb in accordance with inst_/ctions shipped
with curb. (See Fig. 4 for roof curb dimensions) Install insulation,
cant strips, roofing, and flashing Ductwork must be attached to
curb
INPORTANT: The gasketing of the unit to the roof curb is critical
for a watertight seal. Install gasketing material supplied with the
roof curb. Improperly applied gasketing can also result in air leaks
and poor unit performance. Curb should be level to within 1/4 inch
(6.4 ram), See Fig. 7. This is necessary _br unit drain to Nnction
properly. Refkr to accessow- roof cm'b installation instructions fbr
additional infbm_ation as required.
SLAB MOUNT
Place the unit on a solid, level concrete pad that is a nainimun_ of
4 in. (i01.6 ram) thick wit}* 2 in. (50.8 ram) above grade. The slab
should extend 2 in. (50.8 ram) on sides of the unit. Do not secure
the unit to the slab ea'cc,pt when required by local codes.
GROUND LEVEL
Iftocal codes permit, the unit can be placed directly on the ground.
Prepare a level gravel foundation _br proper drainage.
Step a--Field Fabricate Duetwork
Secure all ducts to roof curb and building structure on vertical
discharge units. Do nut connect dzlctwork to _fmt. For horizontal
applications, unit is provided with flanges on the horizontal
openings. All dtlctwork should be secured to the flanges. Insulate
and weatherproof all external ductwork, joints, and roof openings
with counter flashing and mastic in accordance with applicable
codes.
Ducts passing through an unconditioned space must be insulated
and covered with a vapor barrier. If a plenum return is used on a
vertical unit, the return should be ducted through the roof deck to
comply with applicable fire codes. A minin-mm clearance is not
required around dnctwork. (abinet return-air static shall not
exceed -25 in. wg.
Step 4--Provide Clearances
The required minimum opeiating and service clearances are shown
in Figs. 2 and 3. Adequate ventilation and condenser air must be
provided.
[9 83] [21 6F] [9 g3_
REAR VmEW
[1600]
,W
REQ'D CLEARANCES FOR OPERATION AND SERVICING IN (MM)
EVAPORATOR COIL ACCESS SIDE ............. 36 1914)
POWER ENTRY SIDE (EXCEPT FOR NEC REQUIREMENTS) . 36 (914)
UNIT TOR ......................... 48 (1219)
SIDE OPPOSITE DUCTS ................... 36 1914)
DUCT PANEL ....................... 12 (304.8)*
*MINIMUM DISTANCES: IF UNIT IS PLACED LESS THAN 12 IN (3048 MM) FROM
VVALL SYSTEM THEN THE SYSTEM PERFORMANCE MAY BE COMPROMISED
LEGEND
CG - CENTER OF GRAVITY
COND - CONDENSER
EVAP - EVAPORATOR
NEC - NATIONAL ELECTRICAL CODE
REQ'D - REQUIRED
NOTE: DIMENSIONS ARE IN IN (MM)
i98 5 - I!93 9
{3i44] [4700]
i 6!os I _ ' '
i [82 45] _.............................
" i I I
,_ol#1;_277 / i,2.
x 22 0 OP I ¢OMPRCSSOR 8_OWER 6AS SECTiOB
8310
[_272]
LEFT SiDE ViEW FRONT ViEW
UNIT
50GL024
50GL030
50GL036
ELECTRICAL CHARACTERISTICS
_ 326 5 & ELECFRICALACC[SSPANEL
[i2 85]
_724
12 85] 12263
[48 28]
UNIT WEIGNT
Ib kg
400-3-50
400-3-50
400-3-50
264 119.2
296 134.3
302 137.0
Fig. 2-- 50GL024-036 Unit Dimensions
REQ'D CLEARANCES TO COMBUSTIBLE MATL IN (MM)
TOP OF UNIT ....................... 14 (355.6)
DUCT SIDE OF UNIT ..................... 2 (50.8)
SIDE OPPOSITE DUCTS .................. 14 (355.6)
BOTTOM OF UNIT ..................... 0.50 (12.7)
ELECTRIC HEAT PANEL .................. 36 (914.4)
NEC REQ'D CLEARANCES. IN.(MM)
BETWEEN UNITS, POWER ENTRY SIDE .......... 42 (1066.8)
UNIT AND UNGROUNDED SURFACES, POWER ENTRY SIDE . 36 (914)
UNIT AND BLOCK OF CONCRETE WALLS AND OTHER
GROUNDED SURFACES, CONTROL BOX SIDE ....... 42 (1066.8)
44 5 [/ 75] CiA K 0
UNIT N_=iGNT
IN. {_,1M}
_A_
37.02 (940.3)
39.02 (991.1)
35.02 (889.5)
POWER E_TRf \
22 2 [0 88] biA
CONTROL E_TRY
4562
[!t£6] 3472
185 (469.9) 14.5 (368.3) 160 (406.4)
195 (495.3) 15.5 (393.7) 176 (447.0)
195 (495.3) 15.3 (387.4) 165 (419.1)
\
[13 67]
5 o
[0 20]
[48i]
RIGHT SiDE ViEW
CENTER OF GRAVITY
IN.(MM)
X Y Z
C00064
Do not restrict condenser airflow. An air restriction at either
the outdoor-air inlet or the J_imdischarge can be detrimental to
compressor tiJ:_.
The condenser _bn draws air through the condenser coil and
discharges it through the top fhn grill, Be sure that the Lm
discharge does not reeJrculate to the condenser coil, Do not locate
the unit in either a corner or under an overhead obstruction The
mininmm clearance under a partial overhang (such as a normal
house overhang) is 36-in, (9144 ram) above the unit top, The
maximum horizontal extension of a partial overhang must not
exceed 48 in, (12192 ram)
i i
f!22 I DUCT
58s] _ [ OPENI G 02_1N6
i sUOPL_ 2WN
i I
[16 0i]
402 6
[16 0 ]
L I_ i' [
[4 63] [
' Sw _ ; , j
88 3 35 0 "_3 7 3 _ 371 2
[3 48] [13 83] [[3 67] [13 88]
REARViEW
REQUIRED CLEARANCE FOR OPERATION AND SERVICING
EVAR COIL ACCESS SIDE .............................................................. 36.00 [914 O]
POWER ENTRY SIDE ...................................................................... 36.00 [914 0]
(EXCEPT FOR NEC REQUIREMENTS)
UNIT TOP ....................................................................................... 4800 [1219 0]
SIDE OPPOSITE DUCTS ................................................................ 36.00 [914 0]
DUCT PANEL ................................................................................... 12.00 [304 8] _
_MINIMUM DISTANCES: IF UNiT IS PLACED LESS THAN 1200 [304.8] FROM
WALL SYSTEM, THEN SYSTEM PERFORMANCE MAYBE COMPROMISE.
10906
{42 94]
in [mm]
C01L
TOP ViEW
REQUIRED CLEARANCE TO COMBUSTIBLE MATE
TOP OF UNIT ................................................................................... 1400 [355 6]
DUCT SIDE OF UNIT ......................................................................... 200 [50.8]
SIDE OPPOSITE DUCTS ................................................................ 1400 [355 6]
BOTTOM OF UNIT ............................................................................. 050 [12.7]
ELECTRIC HEAT PANEL ................................................................. 3600 [91441
NEC. REQUIRED CLEARANCES,
BETWEEN UNITS, POWER ENTRY SIDE .................................... 42.00 [1066 8]
UNIT AND UNGROUNDED SURFACES. POWER ENTRY SIDE ..3600 [914 0]
UNIT AND BLOCK OR CONCRETE WALLS AND OTHER
GROUNDED SURFACES, POWER ENTRY SIDE ......................... 42.00 [10668 l
d 5 [I 75] DIA K0
POISEI l_2f_
22 2 88 O A 0 / /
CONTRO] EN!RY \ _,_
in. [mml
in [mml
1123 i
[4422]
LEFT SiDE VmEW
UNIT
BL£CTR[CAL CHARACTERISTICS
FRONT ViEW RIOHT SiDE VIEW
UNIT WEIGNT
tb kg
50GL048
400-3-50
350 158.8
Fig. 3-- 50GL048 Unit Dimensions
Do not place the unit where water_ ice, or snow flora an overhang
or roof will damage or flood the mail Do not install the unit on
carpeting_ tile, or other combustible materials,
Step 5--Rig and Place Unit
Rigging and handling of this equipment can be hazardous _br maay
reasons due to the installation location (roofq, elevated stlucmres,
etc,)
Only trained, qualified crane operators and ground support staff
should handle and install this equipment
C00065
UNIT N£1GHT
iN. {_M}
"A"
38.98 (990.2)
19.5 (495.3) 17.6 (447.6) 18.0 (457.2)
CENTER OF GRAVITY
IN. (MM)
X Y Z
When workiag with this equipment, observe precautions in d-_e
literature, on tags, stickers, and labels attached to the equipment,
and aay other safety precautions that might apply,
Follow all applicable safkty codes, Wear safety shoes and work
gloves
Roof Curb for Small Cabinet
Note A: When unit mounting screw is used,
retainer bracket must also be used.
Roof Curb for Large Cabinet
Note A: When unit mounting screw is used,
retainer bracket must also be used.
R/A
-'-_- Gasket around_
\
\
Suppolt
Long
Support
iB X C}
50GL UNIT SIZE ODS CATALOG ORDERING NO. IN. {MM) IN. {MM) IN. {MM) IN. {MM)
ROOF CURB
NOTES:
1. Roof curb must be set up for unit being installed
2. Seal strip must be applied as required to unit being installed
3. Dimensions in ( ) are in millimeters
4. Roof curb is made of 16-gage steel.
5. Table lists only the dimensions per ODS Catalog Ordering Number that have changed
6. Attach ductwork to curb (flanges of duct rest on curb)
7. Insulated panels: lqn. (254 mm) thick fiberglass 1 lb. (45 kg) density.
i I ° i ° i °
024-036
048
CPRFCURB006A00 8 (203) 11(279) 161/2 (419) 28-3/4 (730)
CPRFCURB007A00 14 (356) 11(279) 161/2 (419) 28-3/4 (730)
CPRFCURB008A00 8 (203) 16 3/16 (411) 17 3/8 (441) 40-1/4 (1022)
CPRFCURB009A00 14 (356) 16 3/16 (411) 17 3/8 (441) 40-1/4 (1022)
insulated
deck pan
Gasket around
duct
outer edge \
/\
\,
Fig. 4===Roof Curb Dimensions
S/A
C00076
INSPECTION
Prior to initial use, and at monthly intervals, all rigging brackets
and straps should be xisualty inspected for any damage, evidence
2"
(50 8ran
EVAP. COND.
COIL COIL
Fig. 5--Slab Mounting Details
C99014
of wear, structural det'ormation, 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
l. Remove unit t'rom shipping carton. Leave top shipping skid or*
the unit as a spreader bar to prevent the rigging straps fiom
damaging the unit. If the wood skid is not available, use a
spreader bar of sufficient length to protect unit flora damage
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 lifting brackets into the rigging holds
in the composite base
4. Thread lifting bracket strapping around bottom peiimetei of
unit as follows:
a. Open lever of tension buckle (ratchet type).
b. Feed strapping through tension buckle (See Fig 6 & 8).
c. Pull strapping through tension buckle unit taut
d. Snap lever down to tock strap in tension buckle To release
strapping, squeeze safety tatch, lift teveI, and pull webbing
outward
5. Tighten the tension buckte until it is taut Lifting brackets
n-rest be secure in the rigging holds
6. Attach field=supplied clevis or hook of sufficient strength to
hole in the lifting bracket (See Fig. 6, 8 & 9).
7. Attach the 2 safety straps directly to the clevis or hook at the
4 rigging brackets. DO NOT attach the safety straps to the
lifting brackets (See Fig. 9).
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.
Model 50GL disposes of condensate water through a 3/4 in. NPT
(1905 ram) fitting which exits through the base on the evaporator
coil access side (See Figs. 2 and 3 for location)
Condensate water can be drained directty onto the roof in rooftop
installations (where pem_itted) or onto a gravel apron in ground-
level installations. 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. (25.4mm) lower than the drain
condensate connection to prevent the &ain f}'om overflowing (See
Fig. i0). When using a gravel apron, make sure it slopes away
/}'ore the unit.
Connect a drain robe using a mininmna of 3/4 -in. ( 19.05 ram) PVC
copper pipe (all field-supplied) at the outlet end of the 2-in. (50.8
ram) trap. Do not undersize the tube. Pitch the drain robe
downward at a slope of at least 1-in. (25.4 ram) for every 1Oft. (3.1
m) of horizontal 1am. Be sure to check the &ain robe for leaks.
Prime trap at the beginning of the cooling season start=up.
Step 7--Install Duct Connections
The unit has duct flanges on the supply- and return=air openings on
the side and bottom of the unit For downshot applications, the
ductwork can be connected to the root" curb (See Figs 2 and 3 for
connection sizes and locations)
IMPORTANT: l_se flexible connectors between ductwork and
unit to prevent transmission of vibration. Use suitable gaskets to
ensure weathertight and airtight seal. When electric heat is
installed, use fire proof canvas (or similar heat resistant material)
connector between ductwork and unit discharge connection. If
flexible duct is used, insert a sheet metal sleeve inside duct. Heat
resistant duct connector (or sheet metal sleeve) must extend 24=in.
(60%6 ram) from the unit discharge connection flange into the
&ctwork.
CONFIGUR1)..:G UNITS FOR DOW_TLOW
(VERTICAL) DISCHARGE
the unit,
Step 6--Connect Condensate Drain
NOTE: When installing condensate drain connection be sure to
comply with local codes and restrictions.
Before performing service or maintenance operations on the
system, mrn off main power to unit or electrical shock could
result
1. Open all electrical disconnects and install lockout tag be%re
starting any service work.
2. Remove side duct covers to access bottom remm and supply
knock out covers (See Fig. 12).
DUCTS
'\
\\
SRZE
B
PLACE RIGGING STRAPS IN
BASEPAN SLOT (BELOW R]/ GING HOLDS)
BEFORE RIG/'qNG
MAXBMUM WEIGHT A B
Ib kg in. mm in. mm
_f/A /;',2,;T:,_7_
/(4828')
PLACE BEFORE PLACING
UNIT ON ROOF CURB
024 292 132.5 18.5 469.9 14.50 368.3
030 313 142.5 19.5 495.3 15.50 393.7
036 321 145.6 19.5 495.3 15.25 387.4
048 348 157.9 19.5 495.3 17.62 447.6
Fig. 6--Suggested Rigging
3
MAXIMUM ALLOWABLE
DIFFERENCE 0n.)
A-B B-C A-C
1/4 1/4 1/4
Fig. 7--Unit Leveling Tolerances
C99015
C99065
HANDHOLD Z<_
HOOK
Fig. 8--BeR Threading
3. To remove supply and return duct covers, break front and right
side connecting tabs with a scre_drixer and a hammer Push
cover do_n to break rear and ld:'t side tabs.
4. If unit ductwork is to be attached to vertical opening flanges
on the unit base 0ackstand applications only), do so at _his
time, Collect ALL screws that were removed, Do not leave
screws on rooftop as permanent damage to the roof may occur
5, It is recommended that the base insulation around the perim°
eter of" the vertical return°air opening be secm'ed to the unit
base with alumintml tape. Applicable local codes may require
aluminum tape to prevent exposure to fiberglass.
6. (;over both horizontal duct openings with the duct covers
shipped on the unit fi'om the _i_ctory. Ensure opening is air-and
watertight.
7. After completing unit conversion, perform all safety checks
and power up unit.
FEED
C99067
NOTE: The design and installation of the duct system must be in
accordance with the standards of the NFPA for installation of
nonresidence-type air conditioning and ventilating systems, NFPA
90A or residence=type, NFPA 90B; and/or local codes and
ordinances.
8 Select and size ductwork, supply-air registers, and return-air
grilles according to American Society of Heating, Ref?igera-
tion and Air Conditioning Engineers (ASHRAE) reeommen=
dations
9. Use flexible transition between rigid ductwork and unit to
prevent transmission of vibration. The transition may be
screwed or bolted to duct flanges. Use suitable gaskets to
ensure weathertight and airtight seal.
10. All units must have field-supplied filters or accessory filter
rack installed in the return-air side of the unit. Recommended
sizes _br filters are shown in Table 1.
B4STALL SAFETY STRAPS TO
RIGGB4G CLEVIS AT 4 RIGGING BRACKETS
PLACE RIGGING BRACKET ASSEMBLV IN 4
RIGGING HOLES AND INSTALL TIE DOWN STRAP
AROUND PERIMETER OF UNIT AND THROUGH
SEE DETAIL A
SPACE B4 BRACKET ASSEMBL'V
Fig. 9--Lifting Point
1" (25mm) MtN.
Fig. 10--Condensate Trap
11. Size all ductwork %r maxinmm required airflow (either
heating or cooling) fbr unit being installed. Avoid abrupt duct
size increases or decreases or perfom_ance may be affected
12. Adequately insulate and weatherproof all ductwork located
outdoors Insulate ducts passing through unconditioned space,
and use vapor barrier in accordance with latest issue of Sheet
Metal and Air Conditioning Contractors National Association
(SMACNA) and Air (oaditioning Colmactors of America
(ACCA) minimum installation standards fbr heating and air
conditioning systems. Secure all ducts to building structure
13. Flash, weatherproof, and vibration-isolate all openings in
building structure in accordance with local codes and good
building practices
Step 8--Install Electrical Connection
The unit cabinet must have an uaintetTupted, unbroken
electrical ground to minimize the possibility of personal
injury if an electrical _5ult should occur. This ground may
consist of an electrical wire connected to the unit ground tug
in the contlol compartment, or conduit approved for electrical
ground when installed in accordance with IEC (International
Electrical Code) Failure to adhere to this warning could result
in personal injury or death
DETAIL A
SCALE 0250
TIGHTEN STRAPPING SECURELY
WITH TENSION BUCKLE
TRAP
OUTLET
2" (50ram) MIN.
C99013
Failure to %llow these precautions could result in damage to
the unit being installed:
1 Make all electrical connections in accordance with IEC and
local electrical codes governing such wiring Refkr to unit
wiring diagram.
2 Use only cop!_er conductor _br connections between
fieldosupplied 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.
4. Do not damage internal components when drilling through
any panel to mount electrical hardv,'are, con&fit, etc. On
3-phase units, ensure phases are balanced within 2 percent.
Consult local power company for cot_'ection of improper
voltage aa_or phase imbalance.
HIGHoVOLTAGE CONNECTIONS
The unit must have a separate electrical service with a field-
supplied, waterproof, disconnect switch mounted at, or within
sight fi'om, the unit Refer to the unit rating plate fbr maximum
£aseicircuit breaker size and mininmm circuit amps (ampacity) _br
wire sizing (See Table 4 t'or electrical data)
The field=supplied disconnect switch box may be mounted on the
unit over the highovoltage inlet hole when the standard power and
tow-voltage entry points are used (See Figs 2 and 3 for acceptable
location).
Loading...