MagnaTherm Boilers and Water Heaters
Page 67
9.H.13 Delta T Limits-
This unit is shipped with a factory set Delta T
(temperature rise) limit of 60 degrees F. The installer
has the ability to adjust the Delta T inlet/outlet
degree set point, Delta T delay, Delta T response,
and the Delta T retry limit using the installer level
password. Only the factory may disable this
function.
9.H.14 Frost Protection
Frost protection will assist in keeping the unit from
freezing when the unit is not able to fire, but is still
able to run the pumps. The frost overrun time can be
changed.
9.H.15 Burner Control Ignition
The Pilot test hold function allows the installer to
set the pilot flame to the required pressures listed
in Table 23, without turning on the Main valve. With
a call for heat enabled the unit will start the normal
sequence of operation to light the pilot only. Once
pilot pressure has been properly set, the installer
must disable call for heat and turn this feature
“OFF”. The next time a call for heat is supplied the
unit will light normally.
9.H.16
SystemConfiguration
The installer can set the control to display
temperature in °F or °C, can adjust the anti short
-cycle time, the low fire cutoff time, burner off inhibit
time, and can set the time allowed for an alarm to
sound before being silenced.
9.H.17
SensorConfiguration
The outdoor temperature can be read from the
outdoor sensor that is shipped with the unit, or from
an Envirocom Outdoor Sensor (sold separately). The
Sensor Configuration screen allows the installer to
tell the control which sensor is being used.
