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BOILER CONTROL pARAMETERS
this manual includes detailed explanations of the adjustable
parameters. See Section iii, "Parameter Explanations," for
more information.
!
Revise boiler control parameters only if you fully
understand the purpose and result of the changes
and the advice of ECR Technical Support. Tamper-
ing without understanding the control settings in
this manual will void the warranty and can result in
unreliable operation, with possible severe personal
injury, death, or substantial property damage.
DEFAULT pARAMETER SETTINGS
1.
the "default Parameter Settings" table on the next page
lists the factory default settings for this boiler at stan-
dard altitudes (up to 2000 feet). When in doubt, always
restore parameters to the default settings listed.
WHEN TO CHANGE pARAMETERS
1.
Factory default settings will work for most applications.
there are situations, however, for which changes are
desirable or even mandatory (ex: multiple boiler applica-
tions using the Honeywell am (Ham) module).
2.
default boiler settings are satisfactory for most high-
mass systems (radiant slab, cast iron radiators, most
finned-tube radiation).
TypICAL pARAMETER CHANGES
Outdoor Reset Applications: Outdoor reset operation
can sometimes be improved by adjusting parameters 4,
5, 6, and 7. Parameters 9, 10, and 11 might also be modi-
fied. See "Parameter Explanations" for more information on
outdoor reset.
High Altitude Installations: to ensure proper operation
parameter 17 must be set to 3,200 RPm in all installations
at or above elevations of 2,000 feet. Failure to do so could
result in potential for severe personal injury, death or sub-
stantial property damage.
Refer to Section iV of this manual for instructions on how to
change parameters.
Fan Coil Systems: Systems using fan coil units respond
to heat input rapidly, and may require larger differential
settings (parameters 22 - 25) for best performance. (See
"Parameter explanations" for more information on control
II - Overview of Control Parameters
WARNING
differential and how to adjust.)
High-mass Systems: High-mass systems, such as in-slab
radiant and cast iron radiator systems, respond slowly to
heat input. the factory default settings will work well for
most of these applications.
DO NOT CHANGE THE FOLLOWING
Failure to comply with the following could cause
equipment performance problems, resulting in
potential severe personal injury, death, or sub-
stantial property damage.
•
Parameter 2: do not set for continuous dHW pump.
•
Parameters 13 and 15: do not set higher than values
in the "default Parameter Settings" table on the next
page.
•
Parameters 17 and 19: do not
values in the "default Parameter Settings" table on the
next page.
•
Parameters 24, 25, 26, and 27: do not change from
default settings.
•
Parameter 32: do not change from value of 0.
•
Parameter 33: Leave setting at 30° F for storage tank
dW applications.
•
Parameter 34 (First digit): do not change from value of
0.
•
Parameter 34 (Second digit): Set only at 0 (2nd CH
circuit off) unless using a Honeywell am module. With
Ham, set second digit to 4 (0 - 10 V analog on Ham
capacity).
•
Parameter 35 (Both digits): do not change either digit
from default setting.
•
Parameters 37, 39, 40, and 41: do not change. For
future use only.
•
Parameter 42 (First digit): do not change from default
value.
4
WARNING
!
set lower than
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