Trane CCRC 20, Installation, Operation And Maintenance Manual

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CXRC-SVX01J-EN 19
Installation — Electrical
General Electrical
Recommendations
W WA AR RN NIIN NG G
H Ha azza arrd do ou uss S Se errv viicce e P Prro occe ed du urre ess!!
F Fa aiillu urre e tto o ffo ollllo ow w a allll p prre ecca au uttiio on nss iin n tth hiiss m ma an nu ua all a an nd d
o on n tth he e tta ag gss,, ssttiicckke errss,, a an nd d lla ab be ellss cco ou ulld d rre essu ulltt iin n
d de ea atth h o orr sse erriio ou uss iin njju urry y..
T Te ecch hn niicciia an nss,, iin n o orrd de err tto o p prro otte ecctt tth he em msse ellv ve ess ffrro om m
p po otte en nttiia all e elle eccttrriicca all,, m me ecch ha an niicca all,, a an nd d cch he em miicca all
h ha azza arrd dss,, M MU US ST T ffo ollllo ow w p prre ecca au uttiio on nss iin n tth hiiss m ma an nu ua all
a an nd d o on n tth he e tta ag gss,, ssttiicckke errss,, a an nd d lla ab be ellss,, a ass w we ellll a ass tth he e
ffo ollllo ow wiin ng g iin nssttrru uccttiio on nss:: U Un nlle essss ssp pe ecciiffiie ed d o otth he errw wiisse e,,
d diisscco on nn ne ecctt a allll e elle eccttrriicca all p po ow we err iin nccllu ud diin ng g rre em mo otte e
d diisscco on nn ne ecctt a an nd d d diisscch ha arrg ge e a allll e en ne errg gy y sstto orriin ng g
d de ev viicce ess ssu ucch h a ass cca ap pa acciitto orrss b be effo orre e sse errv viicciin ng g..
F Fo ollllo ow w p prro op pe err llo occkko ou utt//tta ag go ou utt p prro occe ed du urre ess tto o
e en nssu urre e tth he e p po ow we err cca an n n no ott b be e iin na ad dv ve errtte en nttlly y
e en ne errg giizze ed d.. W Wh he en n n ne ecce essssa arry y tto o w wo orrkk w wiitth h lliiv ve e
e elle eccttrriicca all cco om mp po on ne en nttss,, h ha av ve e a a q qu ua alliiffiie ed d lliicce en nsse ed d
e elle eccttrriicciia an n o orr o otth he err iin nd diiv viid du ua all w wh ho o h ha ass b be ee en n
ttrra aiin ne ed d iin n h ha an nd dlliin ng g lliiv ve e e elle eccttrriicca all cco om mp po on ne en nttss
p pe errffo orrm m tth he esse e tta asskkss..
N NO OT TIIC CE E
U Usse e C Co op pp pe err C Co on nd du ucctto orrss O On nlly y!!
F Fa aiillu urre e tto o u usse e cco op pp pe err cco on nd du ucctto orrss cco ou ulld d rre essu ulltt iin n
e eq qu uiip pm me en ntt d da am ma ag ge e a ass tth he e e eq qu uiip pm me en ntt w wa ass n no ott
d de essiig gn ne ed d o orr q qu ua alliiffiie ed d tto o a acccce ep ptt o otth he err tty yp pe ess o off
cco on nd du ucctto orrss..
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 to Table 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, “V
Vo olltta ag ge e IIm mb ba alla an ncce e” .
Voltage Supply
W WA AR RN NIIN NG G
L Liiv ve e E Elle eccttrriicca all C Co om mp po on ne en nttss!!
F Fa aiillu urre e tto o ffo ollllo ow w a allll e elle eccttrriicca all ssa affe etty y p prre ecca au uttiio on nss
w wh he en n e ex xp po osse ed d tto o lliiv ve e e elle eccttrriicca all cco om mp po on ne en nttss cco ou ulld d
rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss iin njju urry y..
W Wh he en n iitt iiss n ne ecce essssa arry y tto o w wo orrkk w wiitth h lliiv ve e e elle eccttrriicca all
cco om mp po on ne en nttss,, h ha av ve e a a q qu ua alliiffiie ed d lliicce en nsse ed d e elle eccttrriicciia an n
o orr o otth he err iin nd diiv viid du ua all w wh ho o h ha ass b be ee en n p prro op pe errlly y ttrra aiin ne ed d
iin n h ha an nd dlliin ng g lliiv ve e e elle eccttrriicca all cco om mp po on ne en nttss p pe errffo orrm m
tth he esse e tta asskkss..
N NO OT TIIC CE E
M Mo otto orr D Da am ma ag ge e!!
C Co orrrre ecctt p ph ha asse e sse eq qu ue en ncce e iiss ccrriittiicca all.. IIff p ph ha asse e
sse eq qu ue en ncce e o off tth he e iin ncco om miin ng g lliin ne e v vo olltta ag ge e iiss n no ott
cco orrrre ecctt,, iitt cco ou ulld d rre essu ulltt iin n m mo otto orr d da am ma ag ge e..
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