Navien NaviCirc Series - Leak Check and Air Purge

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2.2.2 Leak Check & Air Purge
1. Close hot water and cold water faucets.
2. Open hot water and cold water shuto valves.
3. Open hot water and cold water faucets.
4. Check if there are leaks after connecting the hoses to the
NaviCirc.
Note
In case of leaks, close the shuto valves and repair
any leaks.
5. Purge the air from the system by opening the hot water and
cold water faucet.
Note
Perform an air purge so that all residual air can
properly leave the system pipes. If the air purge
is not performed long enough, the recirculation
valve may not operate properly. Also, residual air
can damage the recirculation pump.
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