Install Instructions

56
Outdoor Reset Control
Adjusting Outdoor Reset Curve
The appliance CH set point along with
Parameters 5, 6 & 7 define the settings of the
outdoor reset curve. See Graph 1 and Table 7,
page 57 for an example of modifying the out-
door reset curve.
CH Maximum Boiler Operating
Temperature
If an outdoor temperature sensor is not con-
nected to the appliance, the appliance setpoint
for a heating call will be set to the CH
Maximum Boiler Operating Temperature
Setpoint. If an outdoor temperature sensor is
connected, the CH Maximum Boiler Operating
Temperature Setpoint becomes the appliance
setpoint on the CH Reset Curve Coldest Day.
CH Minimum Boiler Operating Temperature
Setpoint
(Parameter 5)
This parameter is not applicable if an outdoor
sensor is not connected to the appliance. When
an outdoor temperature sensor is connected, the
CH Minimum Boiler Operating Temperature
Setpoint becomes the appliance setpoint on the
CH Reset Curve Warmest Day.
CH Reset Curve Coldest Day
(Parameter 6)
This parameter is not applicable if an outdoor
sensor is not connected to the appliance. When
an outdoor temperature sensor is connected,
the CH Reset Curve Coldest Day is the coldest
design temperature of the heating system.
CH Reset Curve Warmest Day
(Parameter 7)
This parameter is not applicable if an outdoor
sensor is not connected to the appliance. When
an outdoor temperature sensor is connected,
the CH Reset Curve Warmest Day is the
warmest design temperature of the heating sys-
tem.
Changing Outdoor Reset Parameters
1. Press the “”button at the display panel
for approximately 2 to 3 seconds until main
display begins to flash.
2. Press the “”button repeatedly to scroll
through the list of parameters. The operating
display will show the parameter number
and main display will show the parameter
setting.
3. To modifiy a parameter press the or
buttons.
4. Press the button to close the setting
menu and store the changes.
The appliance control module has now been
reprogrammed with the desired parameter values.
Pressing the ON/OFF button will exit
the parameter setting mode without
storing the parameter changes.
NOTICE
Factory Setting
Minimum
Setting
Maximum
Setting
186ºF
[86ºC]
86ºF
[30ºC]
194ºF
[90ºC]
Factory Setting
Minimum
Setting
Maximum
Setting
64ºF
[18ºC]
59ºF
[16ºC]
77ºF
[26ºC]
Factory Setting
Minimum
Setting
Maximum
Setting
00ºF
[- 18ºC]
-22ºF
[-30ºC]
50ºF
[10ºC]
Factory Setting
Minimum
Setting
Maximum
Setting
86ºF
[30ºC]
59ºF
[16ºC]
140ºF
[60ºC]