Rinnai E110CN Installation & Servicing Instructions Manual page 21

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NOTICE
12. If the installation is a zone system be sure to purge out each zone individually.
13. Close the auto feed on the system (F1).
14. Close the return side purge station (BD2) and disconnect the hose (H3).
15. Open the main valve on the system return (V3).
16. Open shutoff valves on both the supply and return connections on the plumbing
kit (V1 and V2).
17. Clean out the dirt trap.
18. Test the pH of the water that will be used for filling the system.
19. Test the water hardness of the water that will be used for filling the system.
20. Use the proper water treatment to ensure the pH and water hardness are within
the Rinnai boiler water quality guidelines.
21. The boiler and system may now be filled.
The following is a list of approved system cleaners, inhibitors, and antifreeze.
Approved antifreeze:
- Rhomar RhoGard Mutli-Metal (AL safe)
- Noble Noburst AL
Approved system cleaner:
- Noble Noburst Hydronic System Cleaner
- Fernox F3 Cleaner
- Rhomar Hydro-Solv 9100
The system cleaners from NoBurst, Rhomar, and Fernox are not to be used in
the boiler. The boiler must be closed off (valved off) from the rest of the system
or not connected while the cleaners are in the system. The system should then
be drained and then thoroughly flushed with clean water to remove all the
system cleaner.
Approved inhibitors:
- Rhomar Pro-tek 922
- Noble Noburst AL inhibitor
- Connect the expansion tank to the system. See chapter 6.2.
- Connect the pipes so that they are free from strain.
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