Data subject to change without notice | Printed in the USA | BTC 761702118 A | 06.2022
Bosch Thermotechnology Corp.
Technical Service Bulletin
IDP (5 ton) Heat Pump Units– Evaporator Coil Replacement
| 3
Figure 8
11. Pass a cable tie through the copper U-ends as close to the metal bracket
as possible, and gently tighten to bring the four rows of the evaporator
together securely (Fig.9).
Figure 9
12. Install the new evaporator coil into the unit, and secure the 5 screws in the
order shown in Fig.10. Remove the temporary support rod.
Figure 10
13. Using the correct procedure with nitrogen, braze the coil’s inlet and outlet
connections (Fig.11).
Figure 11
14. Evacuate and recharge the unit (refer to the installation manual for correct
specifi cations and procedure), reinstall all panels and screws, turn
the power back on to the unit and conduct a test run to ensure correct
operation.
Figure 12
