Maintenance; Performance Check - A.O. Smith Innovo 12-160 Installation, Service & Maintenance Manual

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0312266_INNOVO_UKUK_V3.0, 2017-02-10

Maintenance

The water heater needs maintenance at least once a year. The maintenance interval is
determined by the water quality, the average burning time each day and the set water
temperature.
On the operator interface, the maintenance interval can be set as a reminder. The display
shows Src when the pre-set interval has elapsed.
To determine the correct interval, A.O. Smith recommends to do a system check on both
the water and the gas side, three months after installation.
Note
Do maintenance to maintain an effective and efficient transfer of heat to the water. This
significantly increases the service life of the water heater.
Note
When needed, spare parts can be ordered. To be sure that you receive the correct spare
parts, look at the data plate for the full serial number, the water heater model, and the
used gas category. Use this information when you order the spare parts.
Do the following maintenance activities:
• Performance check (see section 11.1)
• Water side maintenance (see section 11.3)
• Gas side maintenance (see section 11.4)
• Finalization (see section 11.5).
Note
For maintenance purposes, a special gasket and mounting set can be ordered at your
supplier. This kit contains the necessary gaskets, bolts and washers. Look at the data
plate for the correct ordering information.

Performance check

Check if the performance of all components is correct:
1. Make sure that the water heater operates the operating cycle correctly.
2. Make sure that the color of the flame is blue.
3. If applicable, make sure that the T&P valve operates correctly.
Open the T&P valve pressure relief and make sure that water spurt out.
Warning
Hot water can come out of the T&P valve.
4. Make sure the pressure relief connection of the inlet security group operates
correctly.
Open this pressure relief and make sure that water spurt out.
5. Remove the cover from the water heater, refer to Installation (see section 8.8.1).
6. Make sure that the condensate drain operates correctly.
If necessary, remove any contamination.
7. Make sure that there are no leaks in the venting system.
8. Make sure the air pressure differential is correct, refer to Air pressure differential
(see section 8.9.2).
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