Vacation And Extended Shutdown; Cleaning The Filter; Clearing The Condensation Drain Tubes - Bosch Compress 3000 Instruction Manual

Maintenance and repair
The decorative front cover must be removed to access
the valve.
In order to drain the water heater completely:
B Turn off the cold water supply.
B Open a hot water faucet or lift the handle on the relief
valve to admit air to the tank.
Fig. 17
B Open the drain valve.
5.5

Vacation and Extended Shutdown

If the water heater is to remain idle for an extended
period of time, the power and water to the appliance
should be turned off to conserve energy and prevent the
buildup of dangerous hydrogen gas.
The water heater and piping should be drained if they
might be subjected to freezing temperatures. After a
long shutdown period, the water heater's operation and
controls should be checked by qualified service person-
nel. Make certain the water heater is completely filled
again before placing it in operation.
Note: refer to the Hydrogen Gas Caution
i
in the Operating Instructions.
5.6

Cleaning the Filter

In the Auto and Economic modes, the heater moves air
through the system and out the back of the unit. The fil-
ter is in place to protect the evaporator from dirt and
dust.
A clean air filter is important to get the highest effi-
ciency. Occasionally this filter will need to be cleaned
(minimum is once a year).
If the filter gets too dirty, the unit will auto-
i
matically switch to Standard Electric
mode and energy savings will be lost.
B Leave the power on.
B Remove the filter from the top of the unit.
It is located in the top of the unit behind the hot and cold
inlet pipes.
B Grasp the plastic handle
B Slide the filter straight up until it clears the shroud.
Once it has beed removed, the filter can be wiped
clean with a damp rag or rinsed with warm water.
24
Fig. 18
Once the filter has been cleaned, it can be replaced by
aligning it into the slot in the top of the unit and sliding
it down into place. When the handle is flush with the top
of the shroud, it is seated.
When the clean filter has been reinstalled:
B Press ENTER and DOWN keys simultaneously for 2
seconds.
IMPORTANT: A dirty filter will make the system work
harder and result in a reduction of efficiency and
possible damage to the system. In order to get the best
energy efficiency available, make sure your filter is
clean.
5.7 Clearing the Condensation Drain
Tubes
There are two drain hoses that are attached to the back
of the heater. If both of these get clogged, water will
spill down the outside of the unit.
The primary drain is intended to carry all condensate
away. If it is clogged or if the hose is kinked, the conden-
sate will exit the secondary drain tube and onto the floor.
This is intended as a notification to the user that the pri-
mary drain is clogged.
B Remove the drain hose.
B Clear any debris and reattach.
Fig. 19
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