Burnham ALPINE - Page 109

109
XII. Operation (continued)
E. Adjusting Parameters (continued)
Factory
Setting
Range /
Choices
Parameter and Description
Local
Local,
4-20mA
Central Heat Modulation Source
This parameter enables the 4-20mA input to control ring rate and the thermostat input to control
boiler on/off demand directly without using internal setpoint. The 4-20mA selection is used to enable a
remote multiple boiler controller to control the Sage2.1 Control:
Local: 4-20mA Input on Terminal 9 & 10 is ignored.
4-20mA 4-20mA Input on Terminal 9 & 10 is used to control ring Rate % directly.
Local
Local,
4-20mA
Central Heat Setpoint Source
Sets the remote (Energy Management System) control mode as follows:
Local: Local setpoint and modulation rate is used. 4-20mA input on T
erminal 9 & 10 is ignored.
4-20mA 4-20mA Input on Terminal 9 & 10 is used as the temperature setpoint. The following two
parameters may be used to adjust the signal range.
130°F
80°F -
Central Heat
Setpoint
Central Heat 4
-20mAdc Setup, 4 mA Water Temperature*
Sets the Central Heat Temperature Setpoint corresponding to 4mA for signal input on terminal 9 & 10.
Voltage below 4mA is considered invalid, (failed or incorrect wired input).
130°F
80°F -
Central Heat
Setpoint
Central Heat 4
-20mAdc Setup, 20 mA Water Temperature*
Sets the Central Heat Temperature Setpoint corresponding to 20mA for signal input on terminal 9 &
10. Voltage above 20mA is considered invalid, (failed or incorrect wired input).
* Only visible when Central Heat Setpoint Source is set to 4-20mA.
“Press”
Remote
4-20mA
button to access the following parameters:
For Sequence Master and Sequence Slave menu explanation refer to Section XII “Modular Installation”, Paragraph G, 4.