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INSTALLATION
Commissioning
Connect the leads to X0 (see chapter "See 10.3.1, "Connection
with external signal transmitter", pg. 21).
10.4 Assembling the appliance
Note
Refi t the appliance cover after completing your work.
See chapter "See 14.10, "Fitting the appliance cover",
pg. 25).
11. Commissioning
11.1 Commissioning
Material losses
!
Never connect the appliance to the power supply before
the DHW tank is fi lled.
Note
At temperatures below 5°F/-15°C, the high limit safety
cut-out may respond. The appliance may be subjected to
these temperatures during storage or transport.
If required, press the high limit safety cut-out reset
button. See 13.3, "Resetting the high limit safety
cut-out", pg. 23
Note
After an interruption of the power supply, compressor op-
eration remains blocked for at least one minute to allow
the electronic main board to initialize.
If the compressor subsequently fails to start, it may be
disrupted by additional safety devices (Klixon and high
pressure switch). This interruption due to the compressor
motor klixon is terminated automatically.
If the high pressure switch responds, it can be manually
reset after the pressure is less than 246 PSI. This normally
occurs 5 minutes after responding.
11.1.1 Filling the DHW tank
Fill the DHW tank and vent the pipework by following the proce-
dure below:
Close the drain valve.
Open all DHW tap points and the shut-off valve in the cold
water supply.
Close the DHW tap points as soon as water starts to emerge
from them.
11.1.2 Settings / function check
To check the function, select the maximum set temperature.
A higher set temperature allows for more mixed water but lower
effi ciency. A lower set temperature is more effi cient but less
mixed water is available. Never reduce the set temperature below
1 22°F/50°C to reduce problems with legionella.
11.1.3 Appliance handover
Explain the appliance function to users and familiarize them
with its operation.
22
| Accelera® 220-300 E
Make users aware of potential dangers, especially the risk of
scalding.
Make users aware of critical environmental factors and re-
quirements concerning the installation location.
Inform users that water may drip from the safety valve
during the heating operation.
Hand over these operating and installation instructions to
users for safe-keeping.
11.2 Recommissioning
If the appliance is switched off due to an interruption to the power
supply, no specifi c measures for restarting are required once the
power supply has been restored. The appliance has saved the
parameters most recently set and continues operating with these.
If the comfort heating function was active before interruption of
the power supply, this is reactivated with a set temperature of
149°F/65°C once the power supply has been established again.
Remote function is not reactivated after an interruption of the
power supply.
12. Shutting down
Material losses
!
If the appliance is disconnected from the power supply,
it is no longer protected against frost.
Only disconnect the appliance from the power sup-
ply for longer periods if you are also draining the
DHW tank.
If there is no usage of hot water for a long period of time, always
drain the DHW tank. See chapter "See 14.4, "Draining the tank",
pg. 24".
The appliance can only be switched off by interrupting the power
supply.
Pull the plug from the socket or disconnect the circuit breaker
to the appliance.
13. Troubleshooting
WARNING Risk of electrocution
Prior to all work on the appliance, turn off all power to it.
For work inside the appliance, remove the appliance cover
(See 14.1, "Removing the appliance cover", pg. 23).
If necessary, remove the upper section of the casing jacket
(See 14.2, "Removing the casing ring", pg. 24).
Note
Refi t the casing ring after completing the work. See 14.9,
"Fitting the casing ring", pg. 25.
Note
Refi t the appliance cover after completing your work. See
14.10, "Fitting the appliance cover", pg. 25.
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Table of Contents
Troubleshooting
