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Installation and Operating Instructions
7.4 Anode Rod
The anode rod is a sacrificial metal rod that avoids corrosion and premature failure
(leaks) in the tank. It is a consumable item. The anode rod will need to be replaced
before it is depleted. The water heater comes with a magnesium zinc anode rod.
Inspect the anode rod after the first six months of operation when you drain and
flush the tank. Replace the anode rod if it is partially depleted or substantially worn
out (See Figure 19). Thereafter, inspect the anode rod annually or more frequently
if needed. If you use a water softener, your anode rod will deplete faster than
normal and as such would need more frequent inspection.
Certain water conditions will cause a reaction between this rod and the water
heater, potentially causing smelly water. The parts list includes an aluminum anode
for such cases in which the water has a different odor or discoloration due to this
reaction. A water conditioning company might have to be contacted to supply
filtration equipment if the issue persists.
Part Number
7738007479
Magnesium
7738007480
Magnesium
7738007481
Aluminum
7738007482
Aluminum
Anode rod part numbers
Table 21
NOTICE
Warranty exclusion!
•
Damages or malfunction caused by lack of anode rod maintenance is not
covered by the warranty.
New Anode Rod
Partially Depleted Anode
Completely Depleted Anode
Anode rod examples
Figure 19
To inspect or replace the anode rod:
1.
Shut off water heater
2.
Close cold water line and drain a few gallons of water through the faucet or
hot water line to remove water pressure in the tank.
3.
Remove the head cover of the water heater by unscrewing 6 phillips head
srews
4.
Locate white anode rod cap and remove it
5.
Take 1 1/8" socket head with a 18 inch extension to unscrew anode rod
6.
Check and/or replace anode rod and screw back in
26 |
Material
Model
TR7000T-50
TR7000T-80
TR7000T-50
TR7000T-80
Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 A (03.2024)
7.
Fill water heater by opening the cold water line again
8.
Check for leaks before mounting the head cover and powering the unit
7.5 Air Filter
Clean air filter every three months, or more frequently if installed in an area with
poor air quality, which is located on the top of the water heater (if not ducted).
Simply push the little handle in the front to remove and rinse with water to clean it.
Air
Filter
Push
Handle
Filter cleaning
Figure 20
Metal
Grille
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