Condensation - A.O. Smith BTL 100 Installation, User And Service Manual

2. Push on the reset button on the T.R.S.
thermostat to reset the T.R.S.
3. Turn on the water heater (see 4.1), because
the main burner and the pilot burner are OFF.
n
Note
If the T.R.S. switches of the water heater
repeatedly, this indicates something is wrong
with the flue discharge.
Fig. Reset the safety thermostat
1
1 Reset button
0313126_BTL_UKUK_V1.1, 30-11-2018

11.1.3 Condensation

Condensation of flue gases can occur on the cold
surfaces of the combustion chamber and the flue
gas discharge pipe when the water heater is
filled with cold water or when the warm water
usage is very high. Condense water can drop on
the burners which can lead to hissing noise. This
noise will disappear when the water heater has
reached its normal operating temperature again.
c
Caution
Never take the water heater in operation when
the cold water supply is closed.
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