Installation Manual

13
Line Voltage
• Electricalconnectionsmustbeincompliancewithall
applicable local codes and ordinances, and with the
currentrevisionoftheNationalElectricCode(ANSI/
NFPA 70). For Canadian installations the electrical
connections and grounding shall comply with the current
Canadian Electrical Code (CSA C22.1 and/or local
codes).
• Providepowersupplyfortheunitinaccordancewiththe
unit wiring diagram and the unit rating plate. The line
voltage to the unit should be supplied from a dedicated
branch circuit containing the correct fuse or circuit
breaker for the unit.
• Anelectricaldisconnectmustbelocatedwithinsight
ofandreadilyaccessibletotheunit. This switch shall
be capable of electrically de-energizing the outdoor unit.
See unit data label for proper incoming field wiring. Any
other wiring methods must be acceptable to authority
having jurisdiction.
• Awiringdiagramislocatedontheinsidecoverofthe
control access panel of the outdoor unit. The installer
should become familiar with the wiring diagram before
making any electrical connections to the outdoor unit.
See Figures 15 & 16 (pages 38 & 39).
• Ifanyoftheoriginalwiressuppliedwiththeunitmust
be replaced, they must be replaced with material of the
same voltage, gauge, and temperature rating.
• Connecttheline-voltageleadstotheterminalsonthe
contactor inside the control compartment.
• Useonlycopperwireforthelinevoltagepowersupply
to this unit. Use proper code agency listed conduit and
connector for connecting the supply wires. Use of rain
tight conduit is recommended.
• Unitsareshippedfromthefactorywiredfor230or460
volt operation. On 208-230V units being placed into 208
volt operation, remove the lead from the transformer
terminal marked 240V and connect it to the terminal
marked 208V.
• Overcurrentprotectionmustbeprovidedatthebranch
circuit distribution panel and sized as shown on the
unitratinglabelandaccordingtotheNationalElectric
Code and applicable local codes. NOTE: See the unit
rating plate for maximum circuit ampacity and maximum
overcurrent protection limits.
Grounding
WARNING:
Theunitcabinetmusthaveanuninterruptedor
unbrokenelectricalgroundtominimizepersonal
injuryifanelectricalfaultshouldoccur.Do not
use gas piping as an electrical ground
!
This unit must be electrically grounded in accordance
with local codes or, in the absence of local codes, with
theNationalElectricalCode(ANSI/NFPA70)ortheCSA
C22.1 Electrical Code. Use the grounding lug provided in
the control box for grounding the unit.
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failuretofollowsafetywarningsexactlycould
resultinseriousinjuryorpropertydamage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
powertofurnace.
• Whenservicingcontrols,labelallwiresprior
todisconnecting.Reconnectwirescorrectly.
• Verifyproperoperationafterservicing.
WARNING:
RISQUEDECHOCÉLECTRIQUE,D’INCENDIE
OUD’EXPLOSION
Le non-respect des avertissements de sécurité
pourrait entraîner
unfonctionnementdangereux
del’appareil,
desblessuresgraves,lamortou
des dommages matériels.
Un entretein incorrect pourrait entraîner un
fonctionnementdangereuxdel’appareil,des
blessuresgraves,lamortoudesdommages
matériels
• Couper toute alimentation électrique au
générateurd’airchaudavantdeprodéder
auxtravauxd’entretein.
• Aumomentdel’entretiendescommandes,
étiqueteztousleslsavantdelesdébrancher.
S’assurerdelesraccordercorrectement.
•S’assurer que l’appareil fonctionne
adéquatementaprésl’entretien.
AVERTISSEMENT:
ELECTRICAL WIRING
Pre-ElectricalChecklist
√ Verify that the voltage, frequency, and phase of the
supply source match the specifications on the unit rating
plate.
√ Verify that the service provided by the utility is sufficient
to handle the additional load imposed by this equipment.
See Table 13 (page 37) or the unit wiring label for proper
high and low voltage wiring.
√ Verify factory wiring is in accordance with the unit wiring
diagram. Inspect for loose connections.
√ For 3 phase units always check the phase balance
(page 14).