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4-20mA/ 0-10Vdc Setpoint Operation (Standalone)
variable setpoint
determined by 4-20mA
incoming signal
• Modulates on boiler
inlet sensor (default)
• Heat demand is
generated when inlet
temperature drops
below setpoint minus
on hysteresis and 4-
20mA or 0-10Vdc signal
is present.
• If set to local enable
constant pumping is
required
• For remote enable
intermittent pumping is
allowed.
1) Place toggle switch to LOCAL
2) Press and
3) Press [CH – Central Heat Configuration]
4) Press the to arrive at Setpoint
5) Select Setpoint Source = S2 (J8-6) 4-20mA
6) Select 4mA water temperature
7) Select 20mA water temperature
8) Place toggle switch to REMOTE for remote operation (if required)
4-20mA/ 0-10Vdc Firing Rate Operation (Standalone)
variable firing rate
determined by 4-20mA
incoming signal
• Modulates on boiler
inlet sensor (default)
• Heat demand is
generated when inlet
temperature drops
below setpoint minus on
hysteresis and 4-20mA
or 0-10Vdc signal is
present.
• If set to local enable
constant pumping is
required
• For remote enable
intermittent pumping is
allowed.
1) Place toggle switch to LOCAL
2) Press and
3) Press [CH – Central Heat Configuration]
4) Press the to arrive at Modulation
5) Select Modulation Rate Source = S2 (J8-6) 4-20mA and burner on/off
6) Place toggle switch to REMOTE for remote operation (if required)
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