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Rev 2.1
Configure → CH – Central Heat Configuration → Modulation → I-Gain Textbox (Default: 50)
Configure → CH – Central Heat Configuration → Modulation → D-Gain Textbox (Default: 0)
• Type in desired number between 0 to 400
P gain applied to the proportional term of the PID equation for the CH loop.
I gain applied to the Integral term of the PID equation for the CH loop.
D gain applied to the Differential term of the PID equation for the CH loop.
5-1.11 To Change CH Loop Setpoint Source
Configure → CH – Central Heat Configuration → Setpoint → Setpoint Source Textbox
(Default: 4-20mA setpoint)
• Select Local to use local setpoint as CH setpoint
• Select 4-20mA to use remote setpoint as CH setpoint
5-1.12 To Change CH 4-20ma Setpoint Range
Configure → CH – Central Heat Configuration → Setpoint → 4 mA Water Temperature Textbox (Default: 40⁰F)
Configure → CH – Central Heat Configuration → Setpoint → 20 mA Water Temperature Textbox (Default: 200⁰F)
With CH 4-20mA remote setpoint enabled, CH setpoint is provided using the linear interpolation of the 4 mA (min
setpoint) and 20 mA (max setpoint) range received from the building automation system.
5-1.13 To Change CH Priority Over Lead Lag
Configure → CH – Central Heat Configuration → Central Heat → CH has priority over LL Textbox (Default:
No/False/Off)
This parameter sets whether a local CH demand has priority over the control asserted by the LL master, when
enabled as a slave.
5-2 Outdoor Reset Related Configuration
5-2.1 To Change Maximum Outdoor Temperature
Configure → Outdoor Reset Configuration → Central Heat → Maximum Outdoor Temperature Textbox (Default:
80⁰F)
• Type in desired temperature between -40⁰F and 240⁰F (-40⁰C and 115⁰C)
This parameter determines the maximum outdoor temperature for the CH outdoor reset graph. At the maximum
outdoor temperature the setpoint will be the minimum water temperature.
5-2.2 To Change Minimum Outdoor Temperature
Configure → Outdoor Reset Configuration → Central Heat → Minimum Outdoor Temperature Textbox (Default:
50⁰F)
• Type in desired temperature between -40⁰F and 240⁰F (-40⁰C and 115⁰C)
This parameter determines the X coordinate of one point on the Outdoor Reset graph. At this outdoor temperature the
setpoint will be the CH setpoint (or the CH TOD setpoint, if TOD is on).
5-2.3 To Change Minimum Water Temperature
Configure → Outdoor Reset Configuration → Central Heat → Minimum Water Temperature Textbox (Default: 40⁰F)
• Type in desired temperature between 32⁰F and 240⁰F (0⁰C and 115⁰C)
This parameter provides the CH setpoint when the outdoor reset temperature is at its defined maximum.
5-2.4 Outdoor Reset Graph
Configure → Outdoor Reset Configuration → Show Line Button
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General