Checklist; External Unit Power Supply; Unit Disconnect Wiring Plan - Trane Foundation GBC Series Installation, Operation And Maintenance Manual

Packaged rooftop air conditioners foundation cooling and gas/electric 7.5 to 12.5 tons, 60 hz

Table of Contents

W W A A R R N N I I N N G G

H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! !

F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g c c o o u u l l d d

r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . .

D D i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e

d d i i s s c c o o n n n n e e c c t t s s b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g . . F F o o l l l l o o w w p p r r o o p p e e r r

l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r

c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y e e n n e e r r g g i i z z e e d d . . V V e e r r i i f f y y t t h h a a t t n n o o

p p o o w w e e r r i i s s p p r r e e s s e e n n t t w w i i t t h h a a v v o o l l t t m m e e t t e e r r . .

1. Turn the field supplied disconnect switch that

provides power to the main power terminal block or

to the "Line" side of the optional factory mounted

disconnect switch to the "Off" position.

2. Connect the phase sequence indicator leads to the

terminal block or to the "Line" side of the optional

factory mounted disconnect switch as follows:

•

Black (phase A) to L1

•

Brown (phase B) to L2

•

Gray (phase C) to L3

3. Close the field supplied main power disconnect

switch or circuit protector switch that provides the

supply power to the unit.

W W A A R R N N I I N N G G

L L i i v v e e E E l l e e c c t t r r i i c c a a l l C C o o m m p p o o n n e e n n t t s s ! !

F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w a a l l l l e e l l e e c c t t r r i i c c a a l l s s a a f f e e t t y y p p r r e e c c a a u u t t i i o o n n s s

w w h h e e n n e e x x p p o o s s e e d d t t o o l l i i v v e e e e l l e e c c t t r r i i c c a a l l c c o o m m p p o o n n e e n n t t s s c c o o u u l l d d

r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . .

W W h h e e n n i i t t i i s s n n e e c c e e s s s s a a r r y y t t o o w w o o r r k k w w i i t t h h l l i i v v e e e e l l e e c c t t r r i i c c a a l l

c c o o m m p p o o n n e e n n t t s s , , h h a a v v e e a a q q u u a a l l i i f f i i e e d d l l i i c c e e n n s s e e d d e e l l e e c c t t r r i i c c i i a a n n

o o r r o o t t h h e e r r i i n n d d i i v v i i d d u u a a l l w w h h o o h h a a s s b b e e e e n n p p r r o o p p e e r r l l y y t t r r a a i i n n e e d d

i i n n h h a a n n d d l l i i n n g g l l i i v v e e e e l l e e c c t t r r i i c c a a l l c c o o m m p p o o n n e e n n t t s s p p e e r r f f o o r r m m

t t h h e e s s e e t t a a s s k k s s . .

4. Observe the ABC and CBA phase indicator lights on

the face of the sequencer. The ABC indicator light

will glow if the phase is ABC. If the CBA indicator

light glows, open the disconnect switch or circuit

protection switch and reverse any two power wires.

5. Restore the main electrical power and recheck the

phasing. If the phasing is correct, open the

disconnect switch or circuit protection switch and

remove the phase sequence indicator.

Checklist

Use the following checklist in conjunction with the

general checklist

("General Unit Requirements," p.

to ensure that the unit is properly installed and ready

for operation.

RT-SVX069A-EN