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C to D:
Once modulation is established, the sensed loop temperature can fluctuate
between
155°F and
145°F
(between St4 and SR).
The firing rate increases or decreases proportionately between 100% and low
fire, depending upon the temperature sensed in the return loop. Temperature rise in the heat exchanger
varies accordingly, 45° to 15° depending upon the firing rate.
D:
The unit will remain in modulation until the sensed temperature rises above
155°F (St4).
The firing rate
returns to low fire. Modulation will only reactivate when return loop temperature drops to 155°F.
E to F:
Low fire is maintained if the return loop temperature ranges between
155° and 165°F
.
F:
This firing pattern will continue until the temperature reaches the “Burner OFF” threshold of
165°F
(St1)
and shuts off
.
10.6
To View The Setpoint
Push and release the
SET
key to see the set point value.
To return to normal display, press
SET + UP
or wait 15 seconds without pressing any key.
10.7
To Change The Setpoint
Push
the
SET
key. The upper display will show the “St1” parameter name, while the lower display will show
its value.
Use
the
UP
or
DOWN
key to cycle through the parameter names.
Push
the
SET
key to modify a parameter value. The value starts flashing in the lower display.
To change it push the
UP
or
DOWN
keys. Push the
SET
key again to confirm the value and pass to the
setting of next set point.
Repeat the operations described at points 3, 4, 5.
To Exit:
press
SET + UP
or wait 15 seconds without pressing any key.
NOTE:
Each point has a time out of 15 seconds. If any key is pushed within 15 seconds the controller exits the
set points programming procedure.
NOTE
: The set value is stored even when the procedure is exited by waiting the time-out to expire.
10.8
To Change Other Parameters
Push
the
SET
and
DOWN
arrow simultaneously for 3 seconds.
Select the required parameter. The name of the parameter is on the upper display; its value is on the lower
display.
Press
the
SET
key: the value of the parameter will start blinking.
Use
UP
or
DOWN
to change the value.
Press
SET
to store the new value and move to the following parameter.
To Exit
: Press
SET + UP
or wait 15s without pressing a key.
Содержание 1000 WBX 125A-IFC
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