6
VIEWING
The control automatically goes back to viewing when the buttons are left alone for 20 seconds
POWER ON
PROGRAMMING
Press and Release the
"Item" button until the
Boiler Supply pointer is
turned on. The Boiler
Supply temperature will
be displayed.
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
F
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
F
Press and Hold the
"Item" button. The
programmed settings will
be displayed
sequencially.
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
Press and Hold the
button. The boiler hours
(xx) of use will be
displayed.
Press and Hold the
button. The hundreds of
boiler hours (xx00) of use
will be displayed.
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
Press and Hold the
and buttons for 3
seconds to clear the
boiler hours of
operation.
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
F
OUTDOOR
H. Dem
Boiler
Press and Release the
"Item" button until the
Outdoor element is
turned on. The Outdoor
temperature will be
displayed.
Once in the PRGM
mode, the programmed
Starting Temp. pointer
will flash. Use the and
buttons to set the
desired starting
temperature
Press and Release the
"Item" button until the
WWSD pointer flashes.
Use the and buttons
to set the desired
temperature.
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
PRGM
Press and Release the
"Item" button until the
Curve pointer flashes.
Use the and buttons
to set the desired ratio.
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
PRGM
Press and Release the
"Item" button until the
Differential pointer
flashes. Use the and
buttons to set the control
into
Ad (auto differential)
or a fixed value.
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
PRGM
F
Press and Release the
"Item" button until the
Minimum Boiler pointer
flashes. Use the and
buttons to set the
desired temperature.
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
PRGM
C
Press and Release the
"Item" button until the
°
F
or
°
C element flashes.
Use the and buttons
to set the scale to
°
F or
°
C.
H. Dem
Boiler
Once in operating mode,
the control will display the
boiler supply temperature
and will turn on the
Boiler
Supply pointer.
WWSD
Boiler Supply
Target Boiler
Starting Temp
.
Minimum Boiler
Differential
Curve
F
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
PRGM
F C
When the control is
powered-up, a version
number followed by all
display elements are
turned on. After
approximately 5 seconds,
the control automatically
goes into operating mode.
OUTDOOR
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
F
Press and Release the
"Item" button. The target
boiler temperature and
the
Target Boiler pointer
will be displayed. A series
of lines are displayed if no
heat is required.
H. Dem
Boiler
Target Boiler Supply Temperature
Outdoor Temperature
Actual Boiler Supply Temperature
Programmed Settings
Boiler Running Hours
Clearing Boiler Running Hours
Starting Temperature
WWSD
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
PRGM
F
H. Dem
Boiler
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
PRGM
F
H. Dem
Boiler
To enter the programming mode Press and Hold simultaneously, the "Item", , and buttons. The PRGM element will turn on.
Heating Curve
Minimum Boiler
Differential
Fahrenheit / Celsius
The control will flash the
WWSD pointer if the
outdoor temperature is
greater than the WWSD
setting. If the control is
operating at minimum,
the
Minimum Boiler
pointer will flash.
WWSD
Boiler Supply
Target Boiler
Starting Temp.
Minimum Boiler
Differential
Curve
F
H. Dem
Boiler
OUTDOOR
All settings will be saved even during power down of the control
Testing the Control
STEP SEVEN
TESTING
If testing is required with the One Stage Boiler Control 253, follow the testing procedure in step four of the installation procedure on page
4 of this brochure.
STEP EIGHT
TROUBLESHOOTING
As in any troubleshooting procedure, it is important to isolate a problem as much as possible before proceeding. The Error Messages
greatly simplify troubleshooting of the 253. When the control displays an error message, identify the fault from the look-up table on page
7 and follow standard testing procedures to confirm the problem. If you suspect a wiring fault, return to steps three, four and five and
carefully check all external wiring and wiring connections.
Sensor and Internal Faults
• If an outdoor sensor fault occurs, the 253 will assume a fixed outdoor temperature of 32
°
F (0
°
C) and will target the appropriate supply
water temperature. An error message is displayed.
• If a supply sensor fault occurs, the 253 turns the boiler off and displays an error message.
• If an internal control fault occurs, the 253 operates as normal but displays an error message.
