Univex 318258-000 ユーザーズマニュアル

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To shelter the glass-lined water tank from corrosion 
through electrolysis, this water heater is equipped with a 
non-sacrificial powered anode which should not need to be 
replaced under normal operating conditions. 
If the powered anode malfunctions it should be replaced by 
a qualified technician. 

 If a faulty powered anode is not repaired or 

has been removed permanently, then all warranties are 
void. 

During the normal operation of the water heater, sounds or 
noises may be heard. These noises are common and may 
result from the following:

Normal expansion and contraction of metal parts    

1. 

during periods of heat-up and cool-down.
Sediment buildup on or around the elements could 

2. 

create varying amounts of noise and may cause  
premature tank failure. Drain and flush the tank as 
directed under the “Draining and Flushing” section.
The heat pump compressor or fan running.

3. 

Stacking occurs when a series of short draws of hot water 
(3 gallons or less) are taken from the water heater tank. 
This causes increased cycling of the heat pump and/
or heater elements and can result in increased water 
temperatures at the hot water outlet. An anti-scald device 
is recommended in the hot water supply line to reduce the 
risk of scald injury.