Trane Foundation GBC Series, Installation, Operation And Maintenance Manual

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22 RT-SVX069A-EN
disconnect switch. This assembly is located in the
condenser section of the unit.
Both high and low voltage power can be routed
through the base or through the front corner post
where the disconnect enclosure is mounted. The
hole is sized for 1 1/2–in. conduit.
2. If the conduit required for your application is larger
than 1 1/2–in., remove the termination plate and
connect to the larger hole using field supplied
reducing washers.
3. Route the power wires and ground conductor
through conduit and into the bottom of a field-
installed disconnect switch. Connect the power
conductors to the lugs provided. Connect the
ground wire to the unit ground lug.
N No otte e:: Wire size for the length of run should be
determined using the circuit ampacity found
on the unit nameplate and the N.E.C.
4. Route low voltage (class II), control wiring through
hole in base of unit but not through high voltage
conduit. Feed control wiring through bushing
provided on side panel. Route wires through loose
wire ties provided.
5. Tighten the wire ties. Secure the excess wire bundle
under the wire ties in the outdoor section. Do not
leave excess wire in the electrical enclosure. Use
the unit wiring diagram to make the low voltage
connections.
Figure 15. Field wiring route
Through the Base Gas Utility
Option
This section contains the instructions for making field
connections to the Through the Base Gas Utility
Option.
Field Installed Connections
W WA AR RN NIIN NG G
H Ha azza arrd do ou uss V Vo olltta ag ge e w w//C Ca ap pa acciitto orrss!!
F Fa aiillu urre e tto o d diisscco on nn ne ecctt p po ow we err a an nd d d diisscch ha arrg ge e
cca ap pa acciitto orrss b be effo orre e sse errv viicciin ng g cco ou ulld d rre essu ulltt iin n d de ea atth h o orr
sse erriio ou uss iin njju urry y..
D Diisscco on nn ne ecctt a allll e elle eccttrriicc p po ow we err,, iin nccllu ud diin ng g rre em mo otte e
d diisscco on nn ne eccttss a an nd d d diisscch ha arrg ge e a allll m mo otto orr sstta arrtt//rru un n
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 nn no ott b be e iin na ad dv ve errtte en nttlly y e en ne errg giizze ed d.. V Ve erriiffy y w wiitth h a a
C CA AT T IIIIII o orr IIV V v vo ollttm me ette err rra atte ed d p pe err N NF FP PA A 7 70 0E E tth ha att a allll
cca ap pa acciitto orrss h ha av ve e d diisscch ha arrg ge ed d..
F Fo orr a ad dd diittiio on na all iin nffo orrm ma attiio on n rre eg ga arrd diin ng g tth he e ssa affe e
d diisscch ha arrg ge e o off cca ap pa acciitto orrss,, sse ee e P PR RO OD D--S SV VB B0 06 6* *--E EN N..
W WA AR RN NIIN NG G
P Prro op pe err F Fiie elld d W Wiirriin ng g a an nd d G Grro ou un nd diin ng g
R Re eq qu uiirre ed d!!
F Fa aiillu urre e tto o ffo ollllo ow w cco od de e cco ou ulld d rre essu ulltt iin n d de ea atth h o orr
sse erriio ou uss iin njju urry y..
A Allll ffiie elld d w wiirriin ng g M MU US ST T b be e p pe errffo orrm me ed d b by y q qu ua alliiffiie ed d
p pe errsso on nn ne ell.. IIm mp prro op pe errlly y iin nsstta alllle ed d a an nd d g grro ou un nd de ed d
ffiie elld d w wiirriin ng g p po osse ess F FIIR RE E a an nd d E EL LE EC CT TR RO OC CU UT TIIO ON N
h ha azza arrd dss.. T To o a av vo oiid d tth he esse e h ha azza arrd dss,, y yo ou u M MU US ST T ffo ollllo ow w
rre eq qu uiirre em me en nttss ffo orr ffiie elld d w wiirriin ng g iin nsstta alllla attiio on n a an nd d
g grro ou un nd diin ng g a ass d de essccrriib be ed d iin n N NE EC C a an nd d y yo ou urr llo occa all//
sstta atte e//n na attiio on na all e elle eccttrriicca all cco od de ess..
IIm mp po orrtta an ntt:: All phases of this installation must comply
with NATIONAL, STATE, and LOCAL
CODES. In absence of local codes, the
installation must conform with American
National Standard-Z223.1a- National Fuel
Gas Code Latest Revision.
1. Field connections are made by first removing the
access panel for the heat section on the front of the
unit.
2. The gas piping assembly ships inside this section
and includes the shut-off valve, a pressure tap for
testing, and the necessary unions for field
connection. For through the base access, remove
the factory-provided cap from the base pan
opening. See
Figure 16, p. 23 .
3. Route field piping through this hole to the
dimension shown in Table 6, p. 23 .
4. Place the assembly through the cabinet opening as
shown in Figure 16, p. 23 and make the union
connection to the field piping and to the gas train.
Refer to the
“Heating Operation (for Gas Units) -
Standard Economizer,” p. 26 for startup
instructions.
IIn nsstta alllla attiio on n