36
CVHE-SVX02M-EN
Evaporator Waterbox Covers
Ensure that the waterbox head rests tightly against the
tube sheet, and then snugly tighten the 26 bolts in
sequential order as shown in the following figure. If
excessive tube sheet crown prevents the head from
contacting the tube sheet, tighten the bolts located
where the greatest gaps occur. Be sure to use an equal
number of bolt turns from side to side. Then, apply
final torque to each bolt in sequential order.
Figure 23. Evaporator waterbox cover bolt tightening
sequence
Pressure Testing Waterside
Piping
NNOOTTIICCEE
EEqquuiippmmeenntt DDaammaaggee!!
FFaaiilluurree ttoo ffoollllooww tthheessee iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn
eeqquuiippmmeenntt ddaammaaggee..
DDoo nnoott oovveerr pprreessssuurriizzee tthhee ssyysstteemm oorr eexxcceeeedd
ddeessiiggnn pprreessssuurree.. AAllwwaayyss ppeerrffoorrmm aa hhyyddrroo pprreessssuurree
tteesstt wwiitthh wwaatteerr pprreesseenntt iinn ppiippiinngg aanndd wwaatteerrbbooxxeess..
Waterside design pressure is either 150 psig
(1034.2 kPaG) or 300 psig (2068.4 kPaG); refer to unit
nameplate or to submittal documentation.
IInnssttaallllaattiioonn:: WWaatteerr PPiippiinngg
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