Maintenance; Testing Of The Magnesium Anode Rod - Buderus S120 US Assembly And Maintenance Instructions

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Maintenance

6 Maintenance
Unless specified in writing to the contrary, the S120 tank
should only be used for heating of domestic hot water.
A bi-annual inspection of the tank is recommended and
to be performed by a service technician. This inspection
involves assessing the status of the magnesium anode
rod and the need for cleaning of the tank interior.
In case of unfavorable water conditions (hard water) or
when operating the tank at high tank temperatures
(greater than 140 °F), an annual inspection is
recommended.
6.1

Testing of the Magnesium Anode Rod

DANGER
due to electricity.
DANGER! Prior to inspection, disconnect
electricity.
Close off cold feed (EK), and drain tank. Open a
faucet at a higher location to vent the tank.
Remove plastic plugs (Fig. 10, Item. 1) from the
magnesium anode rod and clean-out opening.
Unscrew the magnesium anode rod (Fig. 10, Item. 2)
from the tank using a pipe wrench.
NOTICE
Keep surface of magnesium anode rod
free from oil or grease.
Clean surface of anode rod with water.
Check surface degradation of anode rod.
Change out the anode rod if its diameter is less than
1/2" to 3/4" or if its surface is severely pitted. No
corrosion protection of tank when anode rod is
severely degraded. Tank warranty is voided in this
case.
We reserve the right to make any changes due to technical modifications!
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Fig. 10
Item. 1: Plastic plugs
Item. 2: Magnesium anode rod
Item. 3: Tank inspection opening
Installation and Maintenance Instructions Logalux S 120 „US"• Issue 07/2001
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Removal of magnesium anode rod
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
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