Trane CenTraVac CVHE - Torque Requirements and Waterbox Weights

CVHE-SVX005C-EN
95
Figure 62. Waterbox rigging and lifting—condenser
and evaporator connections
Reassembly
Once service is complete, the waterbox should be
reinstalled on the shell following all previous procedures in
reverse. Use new O-rings or gaskets on all joints after
thoroughly cleaning each joint.
Important: Torque waterbox screws as specified in “Torque
Requirements and Waterbox Weights,” p. 95.
Torque Requirements and Waterbox
Weights
Note: These chillers are assembled with SAE fasteners.
Table 23. CenTraVac chiller screw torques — SAE
Screw Size
Torque — Gasket type O-ring Torque — Flat
in ft·lb N·m ft·lb N·m
3/8 25 33.9 12–18 16.3–24.4
1/2 70 94.9 33–50 44.7–67.8
5/8 150 203.4 70–90 94.9–122.0
3/4 250 339.0 105–155 142.4–210.2
Waterbox Removal and Installation