STIEBEL ELTRON Accelera 300 - 15.3 Sacrificial anode rod; 15.4 Descaling; 15.5 Checking valves; 15.5.1 Safety valve (on-site provision)

ENGLISH
WWW.STIEBEL-ELTRON-USA.COM ACCELERA 300 | 27
INSTALLATION
MAINTENANCE AND CLEANING
15.3 Sacrificial anode rod
A sacrificial anode rod is inserted in the top of the water
heater. The sacrificial anode rod fitted at the factory is
approx. 50" long.
The timing of the anode inspection is subject to the local
water quality and is determined by your local licensed
installer. We recommend that the anode is checked no
later than 12months after initial start-up.
CAUTION :
Risk of electric shock
Use copper conductors only
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1 Sacrificial anode rod
If the anode is used up, you will need to replace it.
Should it prove impossible to install an anode rod
(length approx. 50"), install a segmented anode.
Description Part #
Anode rod 278235
Segmented anode rod 143498
During the anode rod installation ensure a clean metal-
conducting connection between the anode and the tank.
15.4 Descaling
» Close the shut-off valve in the cold water supply to
the tank.
» Draw water from the tank to relieve the pressure
inside the water heater.
CAUTION :
Risk of electric shock
Use copper conductors only
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1 Booster heater flange
» Unscrew the booster heater flange and remove
element.
» Immerse scaled sections of the heater element into
a descaling liquid (for example citric acid), until the
limescale has dissolved.
» Flush the descaling liquid (white vinegar is another
example) off and allow the immersion heater
element to dry.
15.5 Checking valves
15.5.1 Safety valve (on-site provision)
For reasons of safety, it is necessary to check the P&T
valve for proper function from time to time.
» Crack open the safety valve until a full jet of water
is discharged.
» Close the safety valve when the check is complete.
How quickly limescale builds up depends on the local
water quality and the hot water temperature. As your
local licensed installers are familiar with your local
water quality, let them determine the timing of the next
service.
15.5.2 Pressure reducing valve (on-site provision)
» Check the on site pressure relief valve for function.
If required, replace the valve.