Screw-Tightening Sequence For Waterboxes; Evaporator Waterbox Covers; Condenser Waterbox Covers - Trane CVHH CenTraVac Installation, Operation And Maintenance Manual

W W a a t t e e r r b b o o x x R R e e m m o o v v a a l l a a n n d d I I n n s s t t a a l l l l a a t t i i o o n n
Table 31. Waterbox weights (SI units)
Shell
Description
Size
Evaporator, 1034.2 kPaG
Evaporator, 2068.4 kPaG
100
Condenser, 1034.2 kPaG
Condenser, 2068.4 kPaG
Evaporator, 1034.2 kPaG
Evaporator, 2068.4 kPaG
130
Condenser, 1034.2 kPaG
Condenser, 2068.4 kPaG
Evaporator, 1034.2 kPaG
160
Evaporator, 2068.4 kPaG
Evaporator, 1034.2 kPaG
Evaporator, 2068.4 kPaG
200
Condenser, 1034.2 kPaG
Condenser, 2068.4 kPaG
Evaporator, 1034.2 kPaG
Evaporator, 2068.4 kPaG
220
Condenser, 1034.2 kPaG
Condenser, 2068.4 kPaG
Heat Recovery Condenser,
10H
1034.2 kPaG
Heat Recovery Condenser,
13H
1034.2 kPaG
Heat Recovery Condenser,
20H
1034.2 kPaG
Heat Recovery Condenser,
22H
1034.2 kPaG
Screw-Tightening Sequence for
Waterboxes

Evaporator Waterbox Covers

Ensure that the waterbox head rests tightly against the
tube sheet, and then snugly tighten the screws in
sequential order as shown in the following figure. If
excessive tube sheet crown prevents the head from
contacting the tube sheet, tighten the screws located
where the greatest gaps occur. Be sure to use an equal
number of screw turns from side to side. Then, apply
final torque to each screw in sequential order.
116
Non-Marine Non-Marine
Plate Dome
Lifting
Weight Weight
Hole
(kg) (kg)
(mm)
— — 314
369 11.9 —
— — 203
— — 291
— — 347
431 11.9 —
— — 267
— — 386
— — 391
544 11.9 —
— — 295
1003 11.9 —
— — 317
— — —
— — 364
1459 11.9 —
— — 346
— — 513
917 21.8 —
1106 21.8 —
1247 21.8 —
1747 21.8 —
Marine Plate
Cover
Lifting Lifting
Weight
Hole Hole
(kg)
(mm) (mm)
11.9 — —
— 369 11.9
11.9 — —
11.9 — —
11.9 — —
— 320 11.9
11.9 — —
11.9 — —
11.9 — —
— 411 11.9
11.9 581 11.9
— 799 11.9
11.9 — 11.9
11.9 782 11.9
11.9 772 11.9
— 1123 11.9
11.9 — —
11.9 — —
— — —
— — —
— — —
— — —
Figure 66. Evaporator waterbox cover screw
tightening sequence
21
13 3
7
17
25
9
24
16
6
12
20 2

Condenser Waterbox Covers

Condenser waterbox covers use a similar procedure to
that which is used for the evaporator waterbox covers.
Use a crossing pattern as shown in the following
figure.
Marine Dome Marine
Cover Waterbox
Lifting
Weight Weight
Hole
(kg) (kg)
(mm)
258 11.9 586
— — 619
147 11.9 432
198 11.9 542
292 11.9 645
— — 693
185 11.9 529
255 11.9 686
310 11.9 822
— — 878
— — 870
— — 1292
— — 700
— — 970
— — 1214
— — 1876
246 11.9 724
321 11.9 862
— — —
— — —
— — —
— — —
1 11 19
5
15
23
10
26
18
8
4 14 22
CVHH-SVX001G-EN
Lifting
Hole
(mm)
21.8
35.1
21.8
21.8
21.8
35.1
21.8
21.8
21.8
35.1
35.1
35.1
21.8
21.8
35.1
35.1
21.8
21.8
—
—
—
—