Trane CVHH CenTraVac Installation, Operation And Maintenance Manual page 102

Water-cooled chillers with tracer adaptiview control

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S S t t a a r r t t - - u u p p a a n n d d S S h h u u t t - - d d o o w w n n

Remaining carbon capacity% =

100 - (pump-out minutes since last regen/pump-out

minutes at 100% capacity)*100

For example, an R-1233zd-equipped chiller that has

accumulated 80 minutes of purge pump-out time since

the last carbon tank regeneration would be estimated

to have 84 percent carbon tank capacity remaining:

100 – (80/500)*100 = 84%

The purge controls may initiate a carbon tank

regeneration cycle when the remaining carbon tank

capacity is calculated to be less than 80 percent.

However, the continued stable operation of the chiller

is always more important than the regeneration of the

carbon tank. Therefore, the following rules apply:

1. If the Daily Pump-out Limit is disabled, a

regeneration cycle may not be initiated, regardless

of the value of the remaining carbon capacity.

Also, if the Daily Pump-out Limit is disabled during

a regeneration cycle, the regeneration cycle must

be terminated.

2. When the remaining carbon capacity is less than

80 percent, a regeneration cycle will be initiated at

the next opportunity when the chiller is running

(after the chiller has started and no pump-out

minutes have accumulated for the previous

60 minutes).

3. If there is no opportunity to purge as indicated by

Rules 1 and 2 and the remaining carbon capacity is

less than 50 percent, a regeneration cycle will be

initiated at the best opportunity when the chiller is

shut down (and no pump-out minutes have

accumulated for the previous 60 minutes).

4. If there is no opportunity to regenerate as indicated

by Rules 1, 2, and 3 and the carbon capacity drops

below 0 percent, then a regeneration cycle is

initiated.

5. Note that, if at any time during the regeneration

cycle the chiller is running and shuts down or if the

chiller is off and starts up, then the regeneration

cycle is continued.

Carbon Tank Regeneration Sequence

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 . .

102

N N o o t t e e : : Graphic labels (shown above) are used for CE

application only.

I I m m p p o o r r t t a a n n t t : :

•

Before servicing, disconnect all power

sources and allow at least 30 minutes

for capacitors to discharge.

•

All electrical enclosures—unit or remote

—are IP2X.