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9.2.5 Setting the service interval
The service interval is a feature of the controller to help the service and maintenance
engineer set the frequency of maintenance.
The service interval is determined by the number of months that the appliance has been
running. This can be set to 6, 9 and 12 months. The default service interval is 12 months.
When the preset number of months has been reached, an appropriate message will appear
(see section 3.6.3)
.
Set the service interval as follows:
[
]: SERVICE INTERVAL
To erase the message SERVICE REQUIRED, refer to Finalization (see section 10.5).
9.2.6 Service mode
The Installation engineer uses the SERVICE OPERATION menu to adjust the water heater
CO
2
setting during FULL LOAD and PARTIAL LOAD operation.
Use [ ]:SERVICE OPERATION to display the SERVICE OPERATION menu.
[ ]
and [
] can be used to switch between PARTIAL LOAD and FULL LOAD.
If there is a heat demand, the water heater will first run through a startup cycle, then
continue to operate in FULL LOAD or PARTIAL LOAD mode.
If there is no heat demand, the installation engineer must create one. This can be done by
draining the water heater until it is cold or by temporarily raising the set point using [
].
After adjustment, the set point must be set back to the original value using [ ].
if you exit the SERVICE OPERATION menu or if no buttons are pressed for a period of 15
minutes, the water heater will revert to the original operating mode.
Temporarily raising the setpoint during FULL LOAD or PARTIAL
LOAD
[ ]:>:SERVICE OPERATION.
Select FULL LOAD or PARTIAL LOAD.
The example below describes the situation for FULL LOAD, which is identical to that
for PARTIAL LOAD.
Confirm with [ENTER].
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2.
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0311753_SGS_28-120_II_UKUK_V2.0 , 2017-05-03 85
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