A.O. Smith THR-160, Инструкция по установке и руководство по эксплуатации и уходу

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Residen al Gas Tankless Water Heater Use and Care Guide • 55
Unit Draining & Power
Outage
(Freeze Protec on)
1. Close the manual gas shuto ff
valve.
2. Disconnect power to the wa-
ter heater by unplugging it or
by turning o
ff the circuit at the
breaker box.
3. Close the cold inlet water valve.
4. Open all hot water taps in the
house. When the residual water
fl ow has ceased, close all hot
water taps.
5. Drain the X3 ® (or Bypass)
Cartridge: Have a bucket or pan
to catch water from the X3
®
Cartridge. To remove the X3 ®
Cartridge, remove and keep the
3 screws securing the cartridge
in place. Pull down to remove it
from the water heater. Empty the
water out of the cartridge into
the bucket.
6. Wait a few minutes to ensure all
water has completely drained
from the unit.
7. Keep the cold water valve closed.
Keep the gas valve closed. Keep
supply power disconnected.
8. To restore the unit to opera on
reinstall the X3 ® Cartridge with 3
screws removed earlier.
9. Open the cold inlet water valve.
Check all water connec ons for
leaks. If leaks are found, shut-o
ff
the cold water inlet valve and
immediately
fi x any leaks. If no
leaks are present proceed to the
next step.
10. Reconnect power to the water
heater.
11. Open the manual gas shuto ff to
the water heater.
12. If the set temperature is not
displayed, press the ON/OFF
bu on.
13. NOTE: If any errors occur shuto ff
the water immediately.
Condensate Drain
• Inspect the drain lines for any clogs
and clear.
• Check the drain lines for a down-
ward slope. Correct any lines where
water does not drain freely.
• Inspect and clear any debris in the
built-in condensate trap. Remove
the ball trap assembly.
• If a neutralizer is installed, check the
pH. Replace the neutralizer if the pH
of the outlet water is below 6.0.
MAINTENANCE