CXRC-SVX01J-EN
19
Installation — Electrical
General Electrical
Recommendations
WWAARRNNIINNGG
HHaazzaarrddoouuss SSeerrvviiccee PPrroocceedduurreess!!
FFaaiilluurree ttoo ffoollllooww aallll pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaall aanndd
oonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss ccoouulldd rreessuulltt iinn
ddeeaatthh oorr sseerriioouuss iinnjjuurryy..
TTeecchhnniicciiaannss,, iinn oorrddeerr ttoo pprrootteecctt tthheemmsseellvveess ffrroomm
ppootteennttiiaall eelleeccttrriiccaall,, mmeecchhaanniiccaall,, aanndd cchheemmiiccaall
hhaazzaarrddss,, MMUUSSTT ffoollllooww pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaall
aanndd oonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss,, aass wweellll aass tthhee
ffoolllloowwiinngg iinnssttrruuccttiioonnss:: UUnnlleessss ssppeecciiffiieedd ootthheerrwwiissee,,
ddiissccoonnnneecctt aallll eelleeccttrriiccaall ppoowweerr iinncclluuddiinngg rreemmoottee
ddiissccoonnnneecctt aanndd ddiisscchhaarrggee aallll eenneerrggyy ssttoorriinngg
ddeevviicceess ssuucchh aass ccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg..
FFoollllooww pprrooppeerr lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo
eennssuurree tthhee ppoowweerr ccaann nnoott bbee iinnaaddvveerrtteennttllyy
eenneerrggiizzeedd.. WWhheenn nneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee
eelleeccttrriiccaall ccoommppoonneennttss,, hhaavvee aa qquuaalliiffiieedd lliicceennsseedd
eelleeccttrriicciiaann oorr ootthheerr iinnddiivviidduuaall wwhhoo hhaass bbeeeenn
ttrraaiinneedd iinn hhaannddlliinngg lliivvee eelleeccttrriiccaall ccoommppoonneennttss
ppeerrffoorrmm tthheessee ttaasskkss..
NNOOTTIICCEE
UUssee CCooppppeerr CCoonndduuccttoorrss OOnnllyy!!
FFaaiilluurree ttoo uussee ccooppppeerr ccoonndduuccttoorrss ccoouulldd rreessuulltt iinn
eeqquuiippmmeenntt ddaammaaggee aass tthhee eeqquuiippmmeenntt wwaass nnoott
ddeessiiggnneedd oorr qquuaalliiffiieedd ttoo aacccceepptt ootthheerr ttyyppeess ooff
ccoonndduuccttoorrss..
All wiring and disconnects must comply with local and
National Electrical Codes™ (NEC). The installer must
provide properly sized system interconnection and
power supply wiring with appropriate fused disconnect
switches.
Electrical connection types, sizes, and locations are
shown in Figure 5, p. 10. Refer toTable 5, p. 20 for
electrical data (MCA, MFS). This information is also
provided on the unit nameplate. Sample wiring
diagrams are provided in this manual.
Power Supply Wiring
Run appropriately sized power wiring and field-
supplied conduit through the line voltage access
opening provided on the front of the unit. Refer to
Figure 1, p. 7 for electrical connection locations. Run
wire and field supplied conduit up to the conduit
connection point located in the bottom of the control
panel. Make appropriate connections to the power
terminal block in the control panel. Install fused
disconnects as required by local codes. Provide proper
equipment ground to the ground connections in the
control panel.
System Interconnection Wiring
Run appropriately sized field supplied conduits, 115
and 24 volt control wiring through the 115 and 24 volt
access openings provided on the front of the unit. Refer
to Figure 5, p. 10 for electrical connection locations.
Run wire and field supplied conduit to the conduit
connection points provided on the bottom of the
control panel. Make appropriate connections to the
terminal blocks in the control panel. Install safety
devices if required by local code. Provide proper
equipment ground to the ground connections in the
control panel. Refer to Table 5, p. 20 for electrical data.
Unit Wiring Diagrams
Specific unit wiring diagrams are provided on the
inside of the control panel door. Use these diagrams
for connections or trouble analysis. Refer to the
section, “Wiring Diagrams,” p. 31, for typical unit
wiring diagrams.
Unit Voltage
Electrical power to the unit must meet stringent
requirements for the unit to operate properly. Total
voltage supply and voltage imbalance between phases
must be within the following tolerances as stated
below in the section, “VVoollttaaggee IImmbbaallaannccee” .
Voltage Supply
WWAARRNNIINNGG
LLiivvee EElleeccttrriiccaall CCoommppoonneennttss!!
FFaaiilluurree ttoo ffoollllooww aallll eelleeccttrriiccaall ssaaffeettyy pprreeccaauuttiioonnss
wwhheenn eexxppoosseedd ttoo lliivvee eelleeccttrriiccaall ccoommppoonneennttss ccoouulldd
rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..
WWhheenn iitt iiss nneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee eelleeccttrriiccaall
ccoommppoonneennttss,, hhaavvee aa qquuaalliiffiieedd lliicceennsseedd eelleeccttrriicciiaann
oorr ootthheerr iinnddiivviidduuaall wwhhoo hhaass bbeeeenn pprrooppeerrllyy ttrraaiinneedd
iinn hhaannddlliinngg lliivvee eelleeccttrriiccaall ccoommppoonneennttss ppeerrffoorrmm
tthheessee ttaasskkss..
NNOOTTIICCEE
MMoottoorr DDaammaaggee!!
CCoorrrreecctt pphhaassee sseeqquueennccee iiss ccrriittiiccaall.. IIff pphhaassee
sseeqquueennccee ooff tthhee iinnccoommiinngg lliinnee vvoollttaaggee iiss nnoott
ccoorrrreecctt,, iitt ccoouulldd rreessuulltt iinn mmoottoorr ddaammaaggee..
Measure each leg of supply voltage at the line voltage
disconnect switch. Readings must fall within voltage
utilization range shown on the unit nameplate. If
voltage of any leg does not fall within tolerance, notify
the power company to correct this situation before
operating the unit. Inadequate voltage to the unit can
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