Bolt-Tightening Sequence For Waterboxes; Evaporator Waterbox Covers; Condenser Waterbox Covers; Heat Recovery Condenser Waterbox Covers - Trane CVHH Installation, Operation And Maintenance Manual

Bolt-Tightening Sequence for
Waterboxes

Evaporator Waterbox Covers

Ensure that the waterbox head rests tightly against the
tube sheet, and then snugly tighten the bolts in sequential
order as show n in the figure below. If excessive tube sheet
crow n prevents the head from contacting the tube sheet,
tighten the bolts located w here the greatest gaps occur. Be
sure to use an equal num ber of bolt turns from side to side.
Then, apply final torque to each bolt in sequential order.
21 3 1
13
7
17
25
9
24
16
6
20 12 2 4
CVHH-SVX001A-EN
19
11
5
15
23
10
26
18
8
14 22
Waterbox Removal and Installation

Condenser Waterbox Covers

Condenser waterbox covers use a sim ilar procedure to
that w hich is used for the evaporator waterbox covers. Use
a crossing pattern as show n in the follow ing figure.
Heat Recovery Condenser Waterbox
Covers
For heat recovery condenser waterbox covers, torque the
bolts along the center divider of the waterbox first (1A, 2A,
3A, etc), and then torque the bolts around the outside of
the waterbox (1B, 2B, 3B, etc).
22B
18B
14B
10B
6B
2B
24B
20B
16B
3B 7B 11B 15B
19B
23B
6A
4A
2A
1A
3A
5A
7A
12B
4B
8B
1B
5B
9B
13B
17B
21B
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