A.O. Smith DSE-5, Руководство по обслуживанию

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Servicing should only be performed by a Qualified Service Agent
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ELECTRONIC CONTROL SYSTEM
TEMPERATURES MENU
Operating Set Point
User adjustable setting 90°F to 190°F range;
factory default is 120°F. When the water
temperature sensed by the control system
from the immersion Temperature Probe
reaches the Operating Set Point the control
system will end the heating cycle. A call for
heat will be activated again when the water
temperature drops below the Operating Set
Point minus the 1st Differential Setting.
Example : Operating Set Point is 120°F, the 1st Differential Setting is 2°F (factory default). A
call for heat will be activated when the sensed water temperature drops to 118°F.
Differential Settings
Adjustable user setting(s) 1°F to 20° range; factory default is 2°F. The water heaters covered
in this manual will have between 1 and 5 heating elements. There is at least one Differential
Setting on all models. There will be additional Differential Settings for each additional
heating element installed.
Operating Sequence: On a water heater equipped with 3 heating elements, with an
Operating Set Point of 120°F and all Differential settings at 2°F the On/Off sequencing of
heating elements would be as follows:
Tank Temperature
Non adjustable information display. Current water temperature as sensed by the control
system from the immersion Temperature Probe.
Tank Probe Offset
User adjustable setting -5°F to +5°F range; factory default is 0°F. If the current Tank
Temperature is sensed (from the immersion Temperature Probe) at 120°F and the offset is
adjusted to -5°F the control system would calibrate or “offset” the Tank Temperature to
115°F. Heating cycles would then start/stop based on the calibrated Tank Temperature.
Used to calibrate for slight differences in control system temperature sensing. This can
improve the precision of temperature control in the storage tank and at points of use. This
feature can also be used to compensate for building recirculation loops (hot water returning
to the storage tank) that may cause the heating cycle to terminate prematurely.
ELEMENT NUMBER DIFFERENTIAL SETTING TURN ON TEMP TURN OFF TEMP
Element 1 2°F 118°F 120°F
Element 2 2°F 116°F 118°F
Element 3 2°F 114°F 116°F